From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Mon, 13 Aug 2007 20:00:38 +0000 (+0000)
Subject: - generalized a SQLCompileTest out of select.py, installed
X-Git-Tag: rel_0_4beta2~9
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=66142098952f6c1027dbede243a25c003671dee3;p=thirdparty%2Fsqlalchemy%2Fsqlalchemy.git

- generalized a SQLCompileTest out of select.py, installed
into dialect/mssql.py, dialect/oracle.py, sql/generative.py
- fixed oracle issues [ticket:732], [ticket:733], [ticket:734]
---

diff --git a/lib/sqlalchemy/databases/oracle.py b/lib/sqlalchemy/databases/oracle.py
index 78ceddb4ee..2c45c94e8e 100644
--- a/lib/sqlalchemy/databases/oracle.py
+++ b/lib/sqlalchemy/databases/oracle.py
@@ -401,7 +401,7 @@ class OracleDialect(ansisql.ANSIDialect):
     def _normalize_name(self, name):
         if name is None:
             return None
-        elif name.upper() == name and not self.identifier_preparer._requires_quotes(name.lower(), True):
+        elif name.upper() == name and not self.identifier_preparer._requires_quotes(name.lower()):
             return name.lower()
         else:
             return name
@@ -409,7 +409,7 @@ class OracleDialect(ansisql.ANSIDialect):
     def _denormalize_name(self, name):
         if name is None:
             return None
-        elif name.lower() == name and not self.identifier_preparer._requires_quotes(name.lower(), True):
+        elif name.lower() == name and not self.identifier_preparer._requires_quotes(name.lower()):
             return name.upper()
         else:
             return name
@@ -605,7 +605,7 @@ class OracleCompiler(ansisql.ANSICompiler):
         """Oracle doesn't like ``FROM table AS alias``.  Is the AS standard SQL??"""
         
         if asfrom:
-            return self.process(alias.original, asfrom=asfrom, **kwargs) + " " + alias.name
+            return self.process(alias.original, asfrom=asfrom, **kwargs) + " " + self.preparer.format_alias(alias, self._anonymize(alias.name))
         else:
             return self.process(alias.original, **kwargs)
 
@@ -650,7 +650,7 @@ class OracleCompiler(ansisql.ANSICompiler):
                     limitselect.append_whereclause("ora_rn<=%d" % (select._limit + select._offset))
             else:
                 limitselect.append_whereclause("ora_rn<=%d" % select._limit)
-            return self.process(limitselect)
+            return self.process(limitselect, **kwargs)
         else:
             return ansisql.ANSICompiler.visit_select(self, select, **kwargs)
 
diff --git a/test/dialect/mssql.py b/test/dialect/mssql.py
index 309a65bee2..1825141af2 100755
--- a/test/dialect/mssql.py
+++ b/test/dialect/mssql.py
@@ -4,31 +4,22 @@ from sqlalchemy import *
 from sqlalchemy.databases import mssql
 from testlib import *
 
-msdialect = mssql.MSSQLDialect()
-
 # TODO: migrate all MS-SQL tests here
 
-class CompileTest(AssertMixin):
-    def _test(self, statement, expected, **params):
-        if len(params):
-            res = str(statement.compile(dialect=msdialect, parameters=params))
-        else:
-            res = str(statement.compile(dialect=msdialect))
-        res = re.sub(r'\n', '', res)
-
-        assert res == expected, res
+class CompileTest(SQLCompileTest):
+    __dialect__ = mssql.MSSQLDialect()
         
     def test_insert(self):
         t = table('sometable', column('somecolumn'))
-        self._test(t.insert(), "INSERT INTO sometable (somecolumn) VALUES (:somecolumn)")
+        self.assert_compile(t.insert(), "INSERT INTO sometable (somecolumn) VALUES (:somecolumn)")
 
     def test_update(self):
         t = table('sometable', column('somecolumn'))
-        self._test(t.update(t.c.somecolumn==7), "UPDATE sometable SET somecolumn=:somecolumn WHERE sometable.somecolumn = :sometable_somecolumn", somecolumn=10)
+        self.assert_compile(t.update(t.c.somecolumn==7), "UPDATE sometable SET somecolumn=:somecolumn WHERE sometable.somecolumn = :sometable_somecolumn", dict(somecolumn=10))
 
     def test_count(self):
         t = table('sometable', column('somecolumn'))
-        self._test(t.count(), "SELECT count(sometable.somecolumn) AS tbl_row_count FROM sometable")
+        self.assert_compile(t.count(), "SELECT count(sometable.somecolumn) AS tbl_row_count FROM sometable")
     
     def test_union(self):
         t1 = table('t1', 
@@ -48,9 +39,9 @@ class CompileTest(AssertMixin):
             select([t2.c.col3.label('col3'), t2.c.col4.label('col4')], t2.c.col2.in_("t2col2r2", "t2col2r3"))
         )        
         u = union(s1, s2, order_by=['col3', 'col4'])
-        self._test(u, "SELECT t1.col3 AS col3, t1.col4 AS col4 FROM t1 WHERE t1.col2 IN (:t1_col2, :t1_col2_1) UNION SELECT t2.col3 AS col3, t2.col4 AS col4 FROM t2 WHERE t2.col2 IN (:t2_col2, :t2_col2_1) ORDER BY col3, col4")
+        self.assert_compile(u, "SELECT t1.col3 AS col3, t1.col4 AS col4 FROM t1 WHERE t1.col2 IN (:t1_col2, :t1_col2_1) UNION SELECT t2.col3 AS col3, t2.col4 AS col4 FROM t2 WHERE t2.col2 IN (:t2_col2, :t2_col2_1) ORDER BY col3, col4")
 
-        self._test(u.alias('bar').select(), "SELECT bar.col3, bar.col4 FROM (SELECT t1.col3 AS col3, t1.col4 AS col4 FROM t1 WHERE t1.col2 IN (:t1_col2, :t1_col2_1) UNION SELECT t2.col3 AS col3, t2.col4 AS col4 FROM t2 WHERE t2.col2 IN (:t2_col2, :t2_col2_1)) AS bar")
+        self.assert_compile(u.alias('bar').select(), "SELECT bar.col3, bar.col4 FROM (SELECT t1.col3 AS col3, t1.col4 AS col4 FROM t1 WHERE t1.col2 IN (:t1_col2, :t1_col2_1) UNION SELECT t2.col3 AS col3, t2.col4 AS col4 FROM t2 WHERE t2.col2 IN (:t2_col2, :t2_col2_1)) AS bar")
         
 if __name__ == "__main__":
     testbase.main()
diff --git a/test/dialect/oracle.py b/test/dialect/oracle.py
index 14de8960b4..9f194bf070 100644
--- a/test/dialect/oracle.py
+++ b/test/dialect/oracle.py
@@ -1,6 +1,6 @@
 import testbase
 from sqlalchemy import *
-from sqlalchemy.databases import mysql
+from sqlalchemy.databases import oracle
 
 from testlib import *
 
@@ -28,5 +28,96 @@ create or replace procedure foo(x_in IN number, x_out OUT number, y_out OUT numb
     def tearDownAll(self):
          testbase.db.execute("DROP PROCEDURE foo")
 
+
+class CompileTest(SQLCompileTest):
+    __dialect__ = oracle.OracleDialect()
+    
+    def test_subquery(self):
+        t = table('sometable', column('col1'), column('col2'))
+        s = select([t])
+        s = select([s.c.col1, s.c.col2])
+        
+        self.assert_compile(s, "SELECT col1, col2 FROM (SELECT sometable.col1 AS col1, sometable.col2 AS col2 FROM sometable)")
+
+    def test_limit(self):
+        t = table('sometable', column('col1'), column('col2'))
+        
+        s = select([t]).limit(10).offset(20)
+        
+        self.assert_compile(s, "SELECT col1, col2 FROM (SELECT sometable.col1 AS col1, sometable.col2 AS col2, "
+            "ROW_NUMBER() OVER (ORDER BY sometable.rowid) AS ora_rn FROM sometable) WHERE ora_rn>20 AND ora_rn<=30"
+        )
+        
+        s = select([s.c.col1, s.c.col2])
+        
+        self.assert_compile(s, "SELECT col1, col2 FROM (SELECT col1, col2 FROM (SELECT sometable.col1 AS col1, "
+            "sometable.col2 AS col2, ROW_NUMBER() OVER (ORDER BY sometable.rowid) AS ora_rn FROM sometable) WHERE ora_rn>20 AND ora_rn<=30)")
+
+        # testing this twice to ensure oracle doesn't modify the original statement 
+        self.assert_compile(s, "SELECT col1, col2 FROM (SELECT col1, col2 FROM (SELECT sometable.col1 AS col1, "
+            "sometable.col2 AS col2, ROW_NUMBER() OVER (ORDER BY sometable.rowid) AS ora_rn FROM sometable) WHERE ora_rn>20 AND ora_rn<=30)")
+
+    def test_outer_join(self):
+        table1 = table('mytable', 
+            column('myid', Integer),
+            column('name', String),
+            column('description', String),
+        )
+
+        table2 = table(
+            'myothertable', 
+            column('otherid', Integer),
+            column('othername', String),
+        )
+
+        table3 = table(
+            'thirdtable', 
+            column('userid', Integer),
+            column('otherstuff', String),
+        )
+
+        query = select(
+                [table1, table2],
+                or_(
+                    table1.c.name == 'fred',
+                    table1.c.myid == 10,
+                    table2.c.othername != 'jack',
+                    "EXISTS (select yay from foo where boo = lar)"
+                ),
+                from_obj = [ outerjoin(table1, table2, table1.c.myid == table2.c.otherid) ]
+                )
+        self.assert_compile(query, 
+            "SELECT mytable.myid, mytable.name, mytable.description, myothertable.otherid, myothertable.othername \
+FROM mytable, myothertable WHERE mytable.myid = myothertable.otherid(+) AND \
+(mytable.name = :mytable_name OR mytable.myid = :mytable_myid OR \
+myothertable.othername != :myothertable_othername OR EXISTS (select yay from foo where boo = lar))",
+            dialect=oracle.OracleDialect(use_ansi = False))
+
+        query = table1.outerjoin(table2, table1.c.myid==table2.c.otherid).outerjoin(table3, table3.c.userid==table2.c.otherid)
+        self.assert_compile(query.select(), "SELECT mytable.myid, mytable.name, mytable.description, myothertable.otherid, myothertable.othername, thirdtable.userid, thirdtable.otherstuff FROM mytable LEFT OUTER JOIN myothertable ON mytable.myid = myothertable.otherid LEFT OUTER JOIN thirdtable ON thirdtable.userid = myothertable.otherid")
+        self.assert_compile(query.select(), "SELECT mytable.myid, mytable.name, mytable.description, myothertable.otherid, myothertable.othername, thirdtable.userid, thirdtable.otherstuff FROM mytable, myothertable, thirdtable WHERE mytable.myid = myothertable.otherid(+) AND thirdtable.userid(+) = myothertable.otherid", dialect=oracle.dialect(use_ansi=False))    
+    
+    def test_alias_outer_join(self):
+        address_types = table('address_types',
+                    column('id'),
+                    column('name'),
+                    )
+        addresses = table('addresses',
+                column('id'),
+                column('user_id'),
+                column('address_type_id'),
+                column('email_address')
+            )
+        at_alias = address_types.alias()
+        
+        s = select([at_alias, addresses]).\
+            select_from(addresses.outerjoin(at_alias, addresses.c.address_type_id==at_alias.c.id)).\
+            where(addresses.c.user_id==7).\
+            order_by(addresses.oid_column, address_types.oid_column)
+        self.assert_compile(s, "SELECT address_types_1.id, address_types_1.name, addresses.id, addresses.user_id, "
+            "addresses.address_type_id, addresses.email_address FROM addresses LEFT OUTER JOIN address_types address_types_1 "
+            "ON addresses.address_type_id = address_types_1.id WHERE addresses.user_id = :addresses_user_id ORDER BY addresses.rowid, "
+            "address_types.rowid")
+        
 if __name__ == '__main__':
     testbase.main()
diff --git a/test/sql/generative.py b/test/sql/generative.py
index 80a18d4979..d79af577f2 100644
--- a/test/sql/generative.py
+++ b/test/sql/generative.py
@@ -1,5 +1,4 @@
 import testbase
-from sql import select as selecttests
 from sqlalchemy import *
 from testlib import *
 
@@ -132,7 +131,7 @@ class TraversalTest(AssertMixin):
         assert struct != s3
         assert struct3 == s3
 
-class ClauseTest(selecttests.SQLTest):
+class ClauseTest(SQLCompileTest):
     """test copy-in-place behavior of various ClauseElements."""
     
     def setUpAll(self):
@@ -211,7 +210,7 @@ class ClauseTest(selecttests.SQLTest):
             def visit_select(self, select):
                 select.append_whereclause(t1.c.col2==7)
                 
-        self.runtest(Vis().traverse(s, clone=True), "SELECT * FROM table1 WHERE table1.col1 = table2.col1 AND table1.col2 = :table1_col2")
+        self.assert_compile(Vis().traverse(s, clone=True), "SELECT * FROM table1 WHERE table1.col1 = table2.col1 AND table1.col2 = :table1_col2")
 
     def test_clause_adapter(self):
         from sqlalchemy import sql_util
@@ -222,29 +221,29 @@ class ClauseTest(selecttests.SQLTest):
         ff = vis.traverse(func.count(t1.c.col1).label('foo'), clone=True)
         assert ff._get_from_objects() == [t1alias]
         
-        self.runtest(vis.traverse(select(['*'], from_obj=[t1]), clone=True), "SELECT * FROM table1 AS t1alias")
-        self.runtest(vis.traverse(select(['*'], t1.c.col1==t2.c.col2), clone=True), "SELECT * FROM table1 AS t1alias, table2 WHERE t1alias.col1 = table2.col2")
-        self.runtest(vis.traverse(select(['*'], t1.c.col1==t2.c.col2, from_obj=[t1, t2]), clone=True), "SELECT * FROM table1 AS t1alias, table2 WHERE t1alias.col1 = table2.col2")
-        self.runtest(vis.traverse(select(['*'], t1.c.col1==t2.c.col2, from_obj=[t1, t2]).correlate(t1), clone=True), "SELECT * FROM table2 WHERE t1alias.col1 = table2.col2")
-        self.runtest(vis.traverse(select(['*'], t1.c.col1==t2.c.col2, from_obj=[t1, t2]).correlate(t2), clone=True), "SELECT * FROM table1 AS t1alias WHERE t1alias.col1 = table2.col2")
+        self.assert_compile(vis.traverse(select(['*'], from_obj=[t1]), clone=True), "SELECT * FROM table1 AS t1alias")
+        self.assert_compile(vis.traverse(select(['*'], t1.c.col1==t2.c.col2), clone=True), "SELECT * FROM table1 AS t1alias, table2 WHERE t1alias.col1 = table2.col2")
+        self.assert_compile(vis.traverse(select(['*'], t1.c.col1==t2.c.col2, from_obj=[t1, t2]), clone=True), "SELECT * FROM table1 AS t1alias, table2 WHERE t1alias.col1 = table2.col2")
+        self.assert_compile(vis.traverse(select(['*'], t1.c.col1==t2.c.col2, from_obj=[t1, t2]).correlate(t1), clone=True), "SELECT * FROM table2 WHERE t1alias.col1 = table2.col2")
+        self.assert_compile(vis.traverse(select(['*'], t1.c.col1==t2.c.col2, from_obj=[t1, t2]).correlate(t2), clone=True), "SELECT * FROM table1 AS t1alias WHERE t1alias.col1 = table2.col2")
         
         ff = vis.traverse(func.count(t1.c.col1).label('foo'), clone=True)
-        self.runtest(ff, "count(t1alias.col1) AS foo")
+        self.assert_compile(ff, "count(t1alias.col1) AS foo")
         assert ff._get_from_objects() == [t1alias]
         
 # TODO:
-#        self.runtest(vis.traverse(select([func.count(t1.c.col1).label('foo')]), clone=True), "SELECT count(t1alias.col1) AS foo FROM table1 AS t1alias")
+#        self.assert_compile(vis.traverse(select([func.count(t1.c.col1).label('foo')]), clone=True), "SELECT count(t1alias.col1) AS foo FROM table1 AS t1alias")
         
         t2alias = t2.alias('t2alias')
         vis.chain(sql_util.ClauseAdapter(t2alias))
-        self.runtest(vis.traverse(select(['*'], t1.c.col1==t2.c.col2), clone=True), "SELECT * FROM table1 AS t1alias, table2 AS t2alias WHERE t1alias.col1 = t2alias.col2")
-        self.runtest(vis.traverse(select(['*'], t1.c.col1==t2.c.col2, from_obj=[t1, t2]), clone=True), "SELECT * FROM table1 AS t1alias, table2 AS t2alias WHERE t1alias.col1 = t2alias.col2")
-        self.runtest(vis.traverse(select(['*'], t1.c.col1==t2.c.col2, from_obj=[t1, t2]).correlate(t1), clone=True), "SELECT * FROM table2 AS t2alias WHERE t1alias.col1 = t2alias.col2")
-        self.runtest(vis.traverse(select(['*'], t1.c.col1==t2.c.col2, from_obj=[t1, t2]).correlate(t2), clone=True), "SELECT * FROM table1 AS t1alias WHERE t1alias.col1 = t2alias.col2")
+        self.assert_compile(vis.traverse(select(['*'], t1.c.col1==t2.c.col2), clone=True), "SELECT * FROM table1 AS t1alias, table2 AS t2alias WHERE t1alias.col1 = t2alias.col2")
+        self.assert_compile(vis.traverse(select(['*'], t1.c.col1==t2.c.col2, from_obj=[t1, t2]), clone=True), "SELECT * FROM table1 AS t1alias, table2 AS t2alias WHERE t1alias.col1 = t2alias.col2")
+        self.assert_compile(vis.traverse(select(['*'], t1.c.col1==t2.c.col2, from_obj=[t1, t2]).correlate(t1), clone=True), "SELECT * FROM table2 AS t2alias WHERE t1alias.col1 = t2alias.col2")
+        self.assert_compile(vis.traverse(select(['*'], t1.c.col1==t2.c.col2, from_obj=[t1, t2]).correlate(t2), clone=True), "SELECT * FROM table1 AS t1alias WHERE t1alias.col1 = t2alias.col2")
         
         
         
-class SelectTest(selecttests.SQLTest):
+class SelectTest(SQLCompileTest):
     """tests the generative capability of Select"""
 
     def setUpAll(self):
@@ -261,13 +260,13 @@ class SelectTest(selecttests.SQLTest):
             )
     
     def test_select(self):
-        self.runtest(t1.select().where(t1.c.col1==5).order_by(t1.c.col3), "SELECT table1.col1, table1.col2, table1.col3 FROM table1 WHERE table1.col1 = :table1_col1 ORDER BY table1.col3")
+        self.assert_compile(t1.select().where(t1.c.col1==5).order_by(t1.c.col3), "SELECT table1.col1, table1.col2, table1.col3 FROM table1 WHERE table1.col1 = :table1_col1 ORDER BY table1.col3")
     
-        self.runtest(t1.select().select_from(select([t2], t2.c.col1==t1.c.col1)).order_by(t1.c.col3), "SELECT table1.col1, table1.col2, table1.col3 FROM table1, (SELECT table2.col1 AS col1, table2.col2 AS col2, table2.col3 AS col3 FROM table2 WHERE table2.col1 = table1.col1) ORDER BY table1.col3")
+        self.assert_compile(t1.select().select_from(select([t2], t2.c.col1==t1.c.col1)).order_by(t1.c.col3), "SELECT table1.col1, table1.col2, table1.col3 FROM table1, (SELECT table2.col1 AS col1, table2.col2 AS col2, table2.col3 AS col3 FROM table2 WHERE table2.col1 = table1.col1) ORDER BY table1.col3")
         
         s = select([t2], t2.c.col1==t1.c.col1, correlate=False)
         s = s.correlate(t1).order_by(t2.c.col3)
-        self.runtest(t1.select().select_from(s).order_by(t1.c.col3), "SELECT table1.col1, table1.col2, table1.col3 FROM table1, (SELECT table2.col1 AS col1, table2.col2 AS col2, table2.col3 AS col3 FROM table2 WHERE table2.col1 = table1.col1 ORDER BY table2.col3) ORDER BY table1.col3")
+        self.assert_compile(t1.select().select_from(s).order_by(t1.c.col3), "SELECT table1.col1, table1.col2, table1.col3 FROM table1, (SELECT table2.col1 AS col1, table2.col2 AS col2, table2.col3 AS col3 FROM table2 WHERE table2.col1 = table1.col1 ORDER BY table2.col3) ORDER BY table1.col3")
 
 
 if __name__ == '__main__':
diff --git a/test/sql/select.py b/test/sql/select.py
index 32a889b489..f5932d515a 100644
--- a/test/sql/select.py
+++ b/test/sql/select.py
@@ -51,19 +51,7 @@ addresses = table('addresses',
     column('zip')
 )
 
-class SQLTest(PersistTest):
-    def runtest(self, clause, result, dialect = None, params = None, checkparams = None):
-        c = clause.compile(parameters=params, dialect=dialect)
-        print "\nSQL String:\n" + str(c) + repr(c.get_params())
-        cc = re.sub(r'\n', '', str(c))
-        self.assert_(cc == result, "\n'" + cc + "'\n does not match \n'" + result + "'")
-        if checkparams is not None:
-            if isinstance(checkparams, list):
-                self.assert_(c.get_params().get_raw_list() == checkparams, "params dont match ")
-            else:
-                self.assert_(c.get_params().get_original_dict() == checkparams, "params dont match" + repr(c.get_params()))
-            
-class SelectTest(SQLTest):
+class SelectTest(SQLCompileTest):
     
     def test_attribute_sanity(self):
         assert hasattr(table1, 'c')
@@ -79,16 +67,16 @@ class SelectTest(SQLTest):
         assert not hasattr(table1.alias().c.myid, 'c')
         
     def testtableselect(self):
-        self.runtest(table1.select(), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable")
+        self.assert_compile(table1.select(), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable")
 
-        self.runtest(select([table1, table2]), "SELECT mytable.myid, mytable.name, mytable.description, myothertable.otherid, \
+        self.assert_compile(select([table1, table2]), "SELECT mytable.myid, mytable.name, mytable.description, myothertable.otherid, \
 myothertable.othername FROM mytable, myothertable")
 
     def testselectselect(self):
         """tests placing select statements in the column clause of another select, for the
         purposes of selecting from the exported columns of that select."""
         s = select([table1], table1.c.name == 'jack')
-        self.runtest(
+        self.assert_compile(
             select(
                 [s],
                 s.c.myid == 7
@@ -97,7 +85,7 @@ myothertable.othername FROM mytable, myothertable")
         "SELECT myid, name, description FROM (SELECT mytable.myid AS myid, mytable.name AS name, mytable.description AS description FROM mytable WHERE mytable.name = :mytable_name) WHERE myid = :myid")
         
         sq = select([table1])
-        self.runtest(
+        self.assert_compile(
             sq.select(),
             "SELECT myid, name, description FROM (SELECT mytable.myid AS myid, mytable.name AS name, mytable.description AS description FROM mytable)"
         )
@@ -106,7 +94,7 @@ myothertable.othername FROM mytable, myothertable")
             [table1],
         ).alias('sq')
 
-        self.runtest(
+        self.assert_compile(
             sq.select(sq.c.myid == 7), 
             "SELECT sq.myid, sq.name, sq.description FROM \
 (SELECT mytable.myid AS myid, mytable.name AS name, mytable.description AS description FROM mytable) AS sq WHERE sq.myid = :sq_myid"
@@ -123,7 +111,7 @@ mytable.description AS mytable_description, myothertable.otherid AS myothertable
 myothertable.othername AS myothertable_othername FROM mytable, myothertable \
 WHERE mytable.myid = :mytable_myid AND myothertable.otherid = mytable.myid"
 
-        self.runtest(sq.select(), "SELECT sq.mytable_myid, sq.mytable_name, sq.mytable_description, sq.myothertable_otherid, \
+        self.assert_compile(sq.select(), "SELECT sq.mytable_myid, sq.mytable_name, sq.mytable_description, sq.myothertable_otherid, \
 sq.myothertable_othername FROM (" + sqstring + ") AS sq")
 
         sq2 = select(
@@ -131,7 +119,7 @@ sq.myothertable_othername FROM (" + sqstring + ") AS sq")
             use_labels = True
         ).alias('sq2')
 
-        self.runtest(sq2.select(), "SELECT sq2.sq_mytable_myid, sq2.sq_mytable_name, sq2.sq_mytable_description, \
+        self.assert_compile(sq2.select(), "SELECT sq2.sq_mytable_myid, sq2.sq_mytable_name, sq2.sq_mytable_description, \
 sq2.sq_myothertable_otherid, sq2.sq_myothertable_othername FROM \
 (SELECT sq.mytable_myid AS sq_mytable_myid, sq.mytable_name AS sq_mytable_name, \
 sq.mytable_description AS sq_mytable_description, sq.myothertable_otherid AS sq_myothertable_otherid, \
@@ -142,66 +130,66 @@ sq.myothertable_othername AS sq_myothertable_othername FROM (" + sqstring + ") A
         dialect = mssql.dialect()
         q = select([table1.c.myid], order_by=[table1.c.myid]).alias('foo')
         crit = q.c.myid == table1.c.myid
-        self.runtest(select(['*'], crit), """SELECT * FROM (SELECT mytable.myid AS myid FROM mytable ORDER BY mytable.myid) AS foo, mytable WHERE foo.myid = mytable.myid""", dialect=sqlite.dialect())
-        self.runtest(select(['*'], crit), """SELECT * FROM (SELECT mytable.myid AS myid FROM mytable) AS foo, mytable WHERE foo.myid = mytable.myid""", dialect=mssql.dialect())
+        self.assert_compile(select(['*'], crit), """SELECT * FROM (SELECT mytable.myid AS myid FROM mytable ORDER BY mytable.myid) AS foo, mytable WHERE foo.myid = mytable.myid""", dialect=sqlite.dialect())
+        self.assert_compile(select(['*'], crit), """SELECT * FROM (SELECT mytable.myid AS myid FROM mytable) AS foo, mytable WHERE foo.myid = mytable.myid""", dialect=mssql.dialect())
 
     def testmssql_aliases_schemas(self):
-        self.runtest(table4.select(), "SELECT remotetable.rem_id, remotetable.datatype_id, remotetable.value FROM remote_owner.remotetable")
+        self.assert_compile(table4.select(), "SELECT remotetable.rem_id, remotetable.datatype_id, remotetable.value FROM remote_owner.remotetable")
 
         dialect = mssql.dialect()
-        self.runtest(table4.select(), "SELECT remotetable_1.rem_id, remotetable_1.datatype_id, remotetable_1.value FROM remote_owner.remotetable AS remotetable_1", dialect=dialect)
+        self.assert_compile(table4.select(), "SELECT remotetable_1.rem_id, remotetable_1.datatype_id, remotetable_1.value FROM remote_owner.remotetable AS remotetable_1", dialect=dialect)
 
         # TODO: this is probably incorrect; no "AS <foo>" is being applied to the table
-        self.runtest(table1.join(table4, table1.c.myid==table4.c.rem_id).select(), "SELECT mytable.myid, mytable.name, mytable.description, remotetable.rem_id, remotetable.datatype_id, remotetable.value FROM mytable JOIN remote_owner.remotetable ON remotetable.rem_id = mytable.myid")
+        self.assert_compile(table1.join(table4, table1.c.myid==table4.c.rem_id).select(), "SELECT mytable.myid, mytable.name, mytable.description, remotetable.rem_id, remotetable.datatype_id, remotetable.value FROM mytable JOIN remote_owner.remotetable ON remotetable.rem_id = mytable.myid")
         
     def testdontovercorrelate(self):
-        self.runtest(select([table1], from_obj=[table1, table1.select()]), """SELECT mytable.myid, mytable.name, mytable.description FROM mytable, (SELECT mytable.myid AS myid, mytable.name AS name, mytable.description AS description FROM mytable)""")
+        self.assert_compile(select([table1], from_obj=[table1, table1.select()]), """SELECT mytable.myid, mytable.name, mytable.description FROM mytable, (SELECT mytable.myid AS myid, mytable.name AS name, mytable.description AS description FROM mytable)""")
     
     def testexistsascolumnclause(self):
-        self.runtest(exists([table1.c.myid], table1.c.myid==5).select(), "SELECT EXISTS (SELECT mytable.myid FROM mytable WHERE mytable.myid = :mytable_myid)", params={'mytable_myid':5})
+        self.assert_compile(exists([table1.c.myid], table1.c.myid==5).select(), "SELECT EXISTS (SELECT mytable.myid FROM mytable WHERE mytable.myid = :mytable_myid)", params={'mytable_myid':5})
 
-        self.runtest(select([table1, exists([1], from_obj=[table2])]), "SELECT mytable.myid, mytable.name, mytable.description, EXISTS (SELECT 1 FROM myothertable) FROM mytable", params={})
+        self.assert_compile(select([table1, exists([1], from_obj=[table2])]), "SELECT mytable.myid, mytable.name, mytable.description, EXISTS (SELECT 1 FROM myothertable) FROM mytable", params={})
 
-        self.runtest(select([table1, exists([1], from_obj=[table2]).label('foo')]), "SELECT mytable.myid, mytable.name, mytable.description, EXISTS (SELECT 1 FROM myothertable) AS foo FROM mytable", params={})
+        self.assert_compile(select([table1, exists([1], from_obj=[table2]).label('foo')]), "SELECT mytable.myid, mytable.name, mytable.description, EXISTS (SELECT 1 FROM myothertable) AS foo FROM mytable", params={})
     
     def test_generative_exists(self):
-      self.runtest(
+      self.assert_compile(
           table1.select(exists([1], table2.c.otherid == table1.c.myid).correlate(table1)),
           "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE EXISTS (SELECT 1 FROM myothertable WHERE myothertable.otherid = mytable.myid)"
       )
 
-      self.runtest(
+      self.assert_compile(
           table1.select(exists([1]).where(table2.c.otherid == table1.c.myid).correlate(table1)),
           "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE EXISTS (SELECT 1 FROM myothertable WHERE myothertable.otherid = mytable.myid)"
       )
 
-      self.runtest(
+      self.assert_compile(
           table1.select(exists([1]).where(table2.c.otherid == table1.c.myid).correlate(table1)).replace_selectable(table2, table2.alias()),
           "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE EXISTS (SELECT 1 FROM myothertable AS myothertable_1 WHERE myothertable_1.otherid = mytable.myid)"
       )
 
-      self.runtest(
+      self.assert_compile(
           table1.select(exists([1]).where(table2.c.otherid == table1.c.myid).correlate(table1)).select_from(table1.join(table2, table1.c.myid==table2.c.otherid)).replace_selectable(table2, table2.alias()),
           "SELECT mytable.myid, mytable.name, mytable.description FROM mytable JOIN myothertable AS myothertable_1 ON mytable.myid = myothertable_1.otherid WHERE EXISTS (SELECT 1 FROM myothertable AS myothertable_1 WHERE myothertable_1.otherid = mytable.myid)"
       )
         
     def testwheresubquery(self):
         s = select([addresses.c.street], addresses.c.user_id==users.c.user_id, correlate=True).alias('s')
-        self.runtest(
+        self.assert_compile(
             select([users, s.c.street], from_obj=[s]),
             """SELECT users.user_id, users.user_name, users.password, s.street FROM users, (SELECT addresses.street AS street FROM addresses WHERE addresses.user_id = users.user_id) AS s""")
 
-        self.runtest(
+        self.assert_compile(
             table1.select(table1.c.myid == select([table1.c.myid], table1.c.name=='jack')), 
             "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = (SELECT mytable.myid FROM mytable WHERE mytable.name = :mytable_name)"
         )
         
-        self.runtest(
+        self.assert_compile(
             table1.select(table1.c.myid == select([table2.c.otherid], table1.c.name == table2.c.othername)),
             "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = (SELECT myothertable.otherid FROM myothertable WHERE mytable.name = myothertable.othername)"
         )
 
-        self.runtest(
+        self.assert_compile(
             table1.select(exists([1], table2.c.otherid == table1.c.myid)),
             "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE EXISTS (SELECT 1 FROM myothertable WHERE myothertable.otherid = mytable.myid)"
         )
@@ -209,30 +197,30 @@ sq.myothertable_othername AS sq_myothertable_othername FROM (" + sqstring + ") A
 
         talias = table1.alias('ta')
         s = subquery('sq2', [talias], exists([1], table2.c.otherid == talias.c.myid))
-        self.runtest(
+        self.assert_compile(
             select([s, table1])
             ,"SELECT sq2.myid, sq2.name, sq2.description, mytable.myid, mytable.name, mytable.description FROM (SELECT ta.myid AS myid, ta.name AS name, ta.description AS description FROM mytable AS ta WHERE EXISTS (SELECT 1 FROM myothertable WHERE myothertable.otherid = ta.myid)) AS sq2, mytable")
 
         s = select([addresses.c.street], addresses.c.user_id==users.c.user_id, correlate=True).alias('s')
-        self.runtest(
+        self.assert_compile(
             select([users, s.c.street], from_obj=[s]),
             """SELECT users.user_id, users.user_name, users.password, s.street FROM users, (SELECT addresses.street AS street FROM addresses WHERE addresses.user_id = users.user_id) AS s""")
         
         # test constructing the outer query via append_column(), which occurs in the ORM's Query object
         s = select([], exists([1], table2.c.otherid==table1.c.myid), from_obj=[table1])
         s.append_column(table1)
-        self.runtest(
+        self.assert_compile(
             s,
             "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE EXISTS (SELECT 1 FROM myothertable WHERE myothertable.otherid = mytable.myid)"
         )
 
     
     def testorderbysubquery(self):
-        self.runtest(
+        self.assert_compile(
             table1.select(order_by=[select([table2.c.otherid], table1.c.myid==table2.c.otherid)]),
             "SELECT mytable.myid, mytable.name, mytable.description FROM mytable ORDER BY (SELECT myothertable.otherid FROM myothertable WHERE mytable.myid = myothertable.otherid)"
         )
-        self.runtest(
+        self.assert_compile(
             table1.select(order_by=[desc(select([table2.c.otherid], table1.c.myid==table2.c.otherid))]),
             "SELECT mytable.myid, mytable.name, mytable.description FROM mytable ORDER BY (SELECT myothertable.otherid FROM myothertable WHERE mytable.myid = myothertable.otherid) DESC"
         )
@@ -240,23 +228,23 @@ sq.myothertable_othername AS sq_myothertable_othername FROM (" + sqstring + ") A
         
     def test_scalar_select(self):
         s = select([table1.c.myid], scalar=True, correlate=False)
-        self.runtest(select([table1, s]), "SELECT mytable.myid, mytable.name, mytable.description, (SELECT mytable.myid FROM mytable) FROM mytable")
+        self.assert_compile(select([table1, s]), "SELECT mytable.myid, mytable.name, mytable.description, (SELECT mytable.myid FROM mytable) FROM mytable")
 
         s = select([table1.c.myid], scalar=True)
-        self.runtest(select([table2, s]), "SELECT myothertable.otherid, myothertable.othername, (SELECT mytable.myid FROM mytable) FROM myothertable")
+        self.assert_compile(select([table2, s]), "SELECT myothertable.otherid, myothertable.othername, (SELECT mytable.myid FROM mytable) FROM myothertable")
 
         s = select([table1.c.myid]).correlate(None).as_scalar()
-        self.runtest(select([table1, s]), "SELECT mytable.myid, mytable.name, mytable.description, (SELECT mytable.myid FROM mytable) FROM mytable")
+        self.assert_compile(select([table1, s]), "SELECT mytable.myid, mytable.name, mytable.description, (SELECT mytable.myid FROM mytable) FROM mytable")
 
         s = select([table1.c.myid]).as_scalar()
-        self.runtest(select([table2, s]), "SELECT myothertable.otherid, myothertable.othername, (SELECT mytable.myid FROM mytable) FROM myothertable")
+        self.assert_compile(select([table2, s]), "SELECT myothertable.otherid, myothertable.othername, (SELECT mytable.myid FROM mytable) FROM myothertable")
 
         # test expressions against scalar selects
-        self.runtest(select([s - literal(8)]), "SELECT (SELECT mytable.myid FROM mytable) - :literal")
-        self.runtest(select([select([table1.c.name]).as_scalar() + literal('x')]), "SELECT (SELECT mytable.name FROM mytable) || :literal")
-        self.runtest(select([s > literal(8)]), "SELECT (SELECT mytable.myid FROM mytable) > :literal")
+        self.assert_compile(select([s - literal(8)]), "SELECT (SELECT mytable.myid FROM mytable) - :literal")
+        self.assert_compile(select([select([table1.c.name]).as_scalar() + literal('x')]), "SELECT (SELECT mytable.name FROM mytable) || :literal")
+        self.assert_compile(select([s > literal(8)]), "SELECT (SELECT mytable.myid FROM mytable) > :literal")
 
-        self.runtest(select([select([table1.c.name]).label('foo')]), "SELECT (SELECT mytable.name FROM mytable) AS foo")
+        self.assert_compile(select([select([table1.c.name]).label('foo')]), "SELECT (SELECT mytable.name FROM mytable) AS foo")
 
         # scalar selects should not have any attributes on their 'c' or 'columns' attribute
         s = select([table1.c.myid]).as_scalar()
@@ -288,7 +276,7 @@ sq.myothertable_othername AS sq_myothertable_othername FROM (" + sqstring + ") A
                          order_by = ['dist', places.c.nm]
                          )
 
-        self.runtest(q,"SELECT places.id, places.nm, zips.zipcode, latlondist((SELECT zips.latitude FROM zips WHERE "
+        self.assert_compile(q,"SELECT places.id, places.nm, zips.zipcode, latlondist((SELECT zips.latitude FROM zips WHERE "
         "zips.zipcode = :zips_zipcode), (SELECT zips.longitude FROM zips WHERE zips.zipcode = :zips_zipcode_1)) AS dist "
         "FROM places, zips WHERE zips.zipcode = :zips_zipcode_2 ORDER BY dist, places.nm")
         
@@ -298,26 +286,26 @@ sq.myothertable_othername AS sq_myothertable_othername FROM (" + sqstring + ") A
         q = select([places.c.id, places.c.nm, zalias.c.zipcode, func.latlondist(qlat, qlng).label('dist')],
                          order_by = ['dist', places.c.nm]
                          )
-        self.runtest(q, "SELECT places.id, places.nm, main_zip.zipcode, latlondist((SELECT zips.latitude FROM zips WHERE zips.zipcode = main_zip.zipcode), (SELECT zips.longitude FROM zips WHERE zips.zipcode = main_zip.zipcode)) AS dist FROM places, zips AS main_zip ORDER BY dist, places.nm")
+        self.assert_compile(q, "SELECT places.id, places.nm, main_zip.zipcode, latlondist((SELECT zips.latitude FROM zips WHERE zips.zipcode = main_zip.zipcode), (SELECT zips.longitude FROM zips WHERE zips.zipcode = main_zip.zipcode)) AS dist FROM places, zips AS main_zip ORDER BY dist, places.nm")
 
         a1 = table2.alias('t2alias')
         s1 = select([a1.c.otherid], table1.c.myid==a1.c.otherid, scalar=True)
         j1 = table1.join(table2, table1.c.myid==table2.c.otherid)
         s2 = select([table1, s1], from_obj=[j1])
-        self.runtest(s2, "SELECT mytable.myid, mytable.name, mytable.description, (SELECT t2alias.otherid FROM myothertable AS t2alias WHERE mytable.myid = t2alias.otherid) FROM mytable JOIN myothertable ON mytable.myid = myothertable.otherid")
+        self.assert_compile(s2, "SELECT mytable.myid, mytable.name, mytable.description, (SELECT t2alias.otherid FROM myothertable AS t2alias WHERE mytable.myid = t2alias.otherid) FROM mytable JOIN myothertable ON mytable.myid = myothertable.otherid")
     
     def testlabelcomparison(self):
         x = func.lala(table1.c.myid).label('foo')
-        self.runtest(select([x], x==5), "SELECT lala(mytable.myid) AS foo FROM mytable WHERE lala(mytable.myid) = :literal")
+        self.assert_compile(select([x], x==5), "SELECT lala(mytable.myid) AS foo FROM mytable WHERE lala(mytable.myid) = :literal")
         
     def testand(self):
-        self.runtest(
+        self.assert_compile(
             select(['*'], and_(table1.c.myid == 12, table1.c.name=='asdf', table2.c.othername == 'foo', "sysdate() = today()")), 
             "SELECT * FROM mytable, myothertable WHERE mytable.myid = :mytable_myid AND mytable.name = :mytable_name AND myothertable.othername = :myothertable_othername AND sysdate() = today()"
         )
 
     def testor(self):
-        self.runtest(
+        self.assert_compile(
             select([table1], and_(
                 table1.c.myid == 12,
                 or_(table2.c.othername=='asdf', table2.c.othername == 'foo', table2.c.otherid == 9),
@@ -328,23 +316,23 @@ sq.myothertable_othername AS sq_myothertable_othername FROM (" + sqstring + ") A
         )
 
     def testdistinct(self):
-        self.runtest(
+        self.assert_compile(
             select([table1.c.myid.distinct()]), "SELECT DISTINCT mytable.myid FROM mytable"
         )
 
-        self.runtest(
+        self.assert_compile(
             select([distinct(table1.c.myid)]), "SELECT DISTINCT mytable.myid FROM mytable"
         )
 
-        self.runtest(
+        self.assert_compile(
             select([table1.c.myid]).distinct(), "SELECT DISTINCT mytable.myid FROM mytable"
         )
 
-        self.runtest(
+        self.assert_compile(
             select([func.count(table1.c.myid.distinct())]), "SELECT count(DISTINCT mytable.myid) FROM mytable"
         )
 
-        self.runtest(
+        self.assert_compile(
             select([func.count(distinct(table1.c.myid))]), "SELECT count(DISTINCT mytable.myid) FROM mytable"
         )
         
@@ -364,7 +352,7 @@ sq.myothertable_othername AS sq_myothertable_othername FROM (" + sqstring + ") A
                 (literal(6), table1.c.myid, ':literal %s mytable.myid'),
                 (literal(7), literal(5.5), ':literal %s :literal_1'),
                 ):
-                self.runtest(py_op(lhs, rhs), res % sql_op)
+                self.assert_compile(py_op(lhs, rhs), res % sql_op)
 
         # exercise comparison operators
         for (py_op, fwd_op, rev_op) in ((operator.lt, '<', '>'),
@@ -394,101 +382,95 @@ sq.myothertable_othername AS sq_myothertable_othername FROM (" + sqstring + ") A
                              "\n'" + compiled + "'\n does not match\n'" +
                              fwd_sql + "'\n or\n'" + rev_sql + "'")
 
-        self.runtest(
+        self.assert_compile(
          table1.select((table1.c.myid != 12) & ~(table1.c.name=='john')), 
          "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid != :mytable_myid AND mytable.name != :mytable_name"
         )
 
-        self.runtest(
+        self.assert_compile(
          table1.select((table1.c.myid != 12) & ~and_(table1.c.name=='john', table1.c.name=='ed', table1.c.name=='fred')), 
          "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid != :mytable_myid AND NOT (mytable.name = :mytable_name AND mytable.name = :mytable_name_1 AND mytable.name = :mytable_name_2)"
         )
 
-        self.runtest(
+        self.assert_compile(
          table1.select((table1.c.myid != 12) & ~table1.c.name), 
          "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid != :mytable_myid AND NOT mytable.name"
         )
 
-        self.runtest(
+        self.assert_compile(
          literal("a") + literal("b") * literal("c"), ":literal || :literal_1 * :literal_2"
         )
 
         # test the op() function, also that its results are further usable in expressions
-        self.runtest(
+        self.assert_compile(
             table1.select(table1.c.myid.op('hoho')(12)==14),
             "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE (mytable.myid hoho :mytable_myid) = :literal"
         )
 
     def testunicodestartswith(self):
         string = u"hi \xf6 \xf5"
-        self.runtest(
+        self.assert_compile(
             table1.select(table1.c.name.startswith(string)),
             "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.name LIKE :mytable_name",
             checkparams = {'mytable_name': u'hi \xf6 \xf5%'},
         )
 
     def testmultiparam(self):
-        self.runtest(
+        self.assert_compile(
             select(["*"], or_(table1.c.myid == 12, table1.c.myid=='asdf', table1.c.myid == 'foo')), 
             "SELECT * FROM mytable WHERE mytable.myid = :mytable_myid OR mytable.myid = :mytable_myid_1 OR mytable.myid = :mytable_myid_2"
         )
 
     def testorderby(self):
-        self.runtest(
+        self.assert_compile(
             table2.select(order_by = [table2.c.otherid, asc(table2.c.othername)]),
             "SELECT myothertable.otherid, myothertable.othername FROM myothertable ORDER BY myothertable.otherid, myothertable.othername ASC"
         )
 
-        self.runtest(
+        self.assert_compile(
             table2.select(order_by = [table2.c.otherid, table2.c.othername.desc()]),
             "SELECT myothertable.otherid, myothertable.othername FROM myothertable ORDER BY myothertable.otherid, myothertable.othername DESC"
         )
 
     def testgroupby(self):
-        self.runtest(
+        self.assert_compile(
             select([table2.c.othername, func.count(table2.c.otherid)], group_by = [table2.c.othername]),
             "SELECT myothertable.othername, count(myothertable.otherid) FROM myothertable GROUP BY myothertable.othername"
         )
 
-    def testoraclelimit(self):
-        metadata = MetaData()
-        users = Table('users', metadata, Column('name', String(10), key='username'))
-        s = select([users.c.username], limit=5)
-        self.runtest(s, "SELECT name FROM (SELECT users.name AS name, ROW_NUMBER() OVER (ORDER BY users.rowid) AS ora_rn FROM users) WHERE ora_rn<=5", dialect=oracle.dialect())
-        self.runtest(s, "SELECT name FROM (SELECT users.name AS name, ROW_NUMBER() OVER (ORDER BY users.rowid) AS ora_rn FROM users) WHERE ora_rn<=5", dialect=oracle.dialect())
 
     def testgroupby_and_orderby(self):
-        self.runtest(
+        self.assert_compile(
             select([table2.c.othername, func.count(table2.c.otherid)], group_by = [table2.c.othername], order_by = [table2.c.othername]),
             "SELECT myothertable.othername, count(myothertable.otherid) FROM myothertable GROUP BY myothertable.othername ORDER BY myothertable.othername"
         )
     
     def testforupdate(self):
-        self.runtest(table1.select(table1.c.myid==7, for_update=True), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = :mytable_myid FOR UPDATE")
+        self.assert_compile(table1.select(table1.c.myid==7, for_update=True), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = :mytable_myid FOR UPDATE")
     
-        self.runtest(table1.select(table1.c.myid==7, for_update="nowait"), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = :mytable_myid FOR UPDATE")
+        self.assert_compile(table1.select(table1.c.myid==7, for_update="nowait"), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = :mytable_myid FOR UPDATE")
 
-        self.runtest(table1.select(table1.c.myid==7, for_update="nowait"), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = :mytable_myid FOR UPDATE NOWAIT", dialect=oracle.dialect())
+        self.assert_compile(table1.select(table1.c.myid==7, for_update="nowait"), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = :mytable_myid FOR UPDATE NOWAIT", dialect=oracle.dialect())
 
-        self.runtest(table1.select(table1.c.myid==7, for_update="read"), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = %s LOCK IN SHARE MODE", dialect=mysql.dialect())
+        self.assert_compile(table1.select(table1.c.myid==7, for_update="read"), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = %s LOCK IN SHARE MODE", dialect=mysql.dialect())
 
-        self.runtest(table1.select(table1.c.myid==7, for_update=True), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = %s FOR UPDATE", dialect=mysql.dialect())
+        self.assert_compile(table1.select(table1.c.myid==7, for_update=True), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = %s FOR UPDATE", dialect=mysql.dialect())
 
-        self.runtest(table1.select(table1.c.myid==7, for_update=True), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = :mytable_myid FOR UPDATE", dialect=oracle.dialect())
+        self.assert_compile(table1.select(table1.c.myid==7, for_update=True), "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = :mytable_myid FOR UPDATE", dialect=oracle.dialect())
    
     def testalias(self):
         # test the alias for a table1.  column names stay the same, table name "changes" to "foo".
-        self.runtest(
+        self.assert_compile(
             select([table1.alias('foo')])
             ,"SELECT foo.myid, foo.name, foo.description FROM mytable AS foo")
 
         for dialect in (firebird.dialect(), oracle.dialect()):
-            self.runtest(
+            self.assert_compile(
                 select([table1.alias('foo')])
                 ,"SELECT foo.myid, foo.name, foo.description FROM mytable foo"
                 ,dialect=dialect)
 
-        self.runtest(
+        self.assert_compile(
             select([table1.alias()])
             ,"SELECT mytable_1.myid, mytable_1.name, mytable_1.description FROM mytable AS mytable_1")
 
@@ -502,7 +484,7 @@ sq.myothertable_othername AS sq_myothertable_othername FROM (" + sqstring + ") A
 
         # select from that alias, also using labels.  two levels of labels should produce two underscores.
         # also, reference the column "mytable_myid" off of the t2view alias.
-        self.runtest(
+        self.assert_compile(
             a.select(a.c.mytable_myid == 9, use_labels = True),
             "SELECT t2view.mytable_myid AS t2view_mytable_myid, t2view.mytable_name AS t2view_mytable_name, \
 t2view.mytable_description AS t2view_mytable_description, t2view.myothertable_otherid AS t2view_myothertable_otherid FROM \
@@ -513,18 +495,18 @@ WHERE mytable.myid = myothertable.otherid) AS t2view WHERE t2view.mytable_myid =
         
         
     def test_prefixes(self):
-        self.runtest(table1.select().prefix_with("SQL_CALC_FOUND_ROWS").prefix_with("SQL_SOME_WEIRD_MYSQL_THING"),
+        self.assert_compile(table1.select().prefix_with("SQL_CALC_FOUND_ROWS").prefix_with("SQL_SOME_WEIRD_MYSQL_THING"),
             "SELECT SQL_CALC_FOUND_ROWS SQL_SOME_WEIRD_MYSQL_THING mytable.myid, mytable.name, mytable.description FROM mytable"
         )
         
     def testtext(self):
-        self.runtest(
+        self.assert_compile(
             text("select * from foo where lala = bar") ,
             "select * from foo where lala = bar"
         )
 
         # test bytestring
-        self.runtest(select(
+        self.assert_compile(select(
             ["foobar(a)", "pk_foo_bar(syslaal)"],
             "a = 12",
             from_obj = ["foobar left outer join lala on foobar.foo = lala.foo"]
@@ -532,7 +514,7 @@ WHERE mytable.myid = myothertable.otherid) AS t2view WHERE t2view.mytable_myid =
         "SELECT foobar(a), pk_foo_bar(syslaal) FROM foobar left outer join lala on foobar.foo = lala.foo WHERE a = 12")
 
         # test unicode
-        self.runtest(select(
+        self.assert_compile(select(
             [u"foobar(a)", u"pk_foo_bar(syslaal)"],
             u"a = 12",
             from_obj = [u"foobar left outer join lala on foobar.foo = lala.foo"]
@@ -547,22 +529,22 @@ WHERE mytable.myid = myothertable.otherid) AS t2view WHERE t2view.mytable_myid =
         s.append_whereclause("column2=19")
         s = s.order_by("column1")
         s.append_from("table1")
-        self.runtest(s, "SELECT column1, column2 FROM table1 WHERE column1=12 AND column2=19 ORDER BY column1")
+        self.assert_compile(s, "SELECT column1, column2 FROM table1 WHERE column1=12 AND column2=19 ORDER BY column1")
 
     def testtextcolumns(self):
-        self.runtest(
+        self.assert_compile(
             select(["column1", "column2"], from_obj=[table1]).alias('somealias').select(),
             "SELECT somealias.column1, somealias.column2 FROM (SELECT column1, column2 FROM mytable) AS somealias"
         )
         
         # test that use_labels doesnt interfere with literal columns
-        self.runtest(
+        self.assert_compile(
             select(["column1", "column2", table1.c.myid], from_obj=[table1], use_labels=True),
             "SELECT column1, column2, mytable.myid AS mytable_myid FROM mytable"
         )
 
         # test that use_labels doesnt interfere with literal columns that have textual labels
-        self.runtest(
+        self.assert_compile(
             select(["column1 AS foobar", "column2 AS hoho", table1.c.myid], from_obj=[table1], use_labels=True),
             "SELECT column1 AS foobar, column2 AS hoho, mytable.myid AS mytable_myid FROM mytable"
         )
@@ -572,20 +554,20 @@ WHERE mytable.myid = myothertable.otherid) AS t2view WHERE t2view.mytable_myid =
         print "---------------------------------------------"
         # test that "auto-labeling of subquery columns" doesnt interfere with literal columns,
         # exported columns dont get quoted
-        self.runtest(
+        self.assert_compile(
             select(["column1 AS foobar", "column2 AS hoho", table1.c.myid], from_obj=[table1]).select(),
             "SELECT column1 AS foobar, column2 AS hoho, myid FROM (SELECT column1 AS foobar, column2 AS hoho, mytable.myid AS myid FROM mytable)"
         )
 
     def testtextbinds(self):
-        self.runtest(
+        self.assert_compile(
             text("select * from foo where lala=:bar and hoho=:whee"), 
                 "select * from foo where lala=:bar and hoho=:whee", 
                 checkparams={'bar':4, 'whee': 7},
                 params={'bar':4, 'whee': 7, 'hoho':10},
         )
 
-        self.runtest(
+        self.assert_compile(
             text("select * from foo where clock='05:06:07'"), 
                 "select * from foo where clock='05:06:07'", 
                 checkparams={},
@@ -593,14 +575,14 @@ WHERE mytable.myid = myothertable.otherid) AS t2view WHERE t2view.mytable_myid =
         )
 
         dialect = postgres.dialect()
-        self.runtest(
+        self.assert_compile(
             text("select * from foo where lala=:bar and hoho=:whee"), 
                 "select * from foo where lala=%(bar)s and hoho=%(whee)s", 
                 checkparams={'bar':4, 'whee': 7},
                 params={'bar':4, 'whee': 7, 'hoho':10},
                 dialect=dialect
         )
-        self.runtest(
+        self.assert_compile(
             text("select * from foo where clock='05:06:07' and mork='\:mindy'"),
             "select * from foo where clock='05:06:07' and mork=':mindy'",
             checkparams={},
@@ -609,7 +591,7 @@ WHERE mytable.myid = myothertable.otherid) AS t2view WHERE t2view.mytable_myid =
         )
 
         dialect = sqlite.dialect()
-        self.runtest(
+        self.assert_compile(
             text("select * from foo where lala=:bar and hoho=:whee"), 
                 "select * from foo where lala=? and hoho=?", 
                 checkparams=[4, 7],
@@ -618,7 +600,7 @@ WHERE mytable.myid = myothertable.otherid) AS t2view WHERE t2view.mytable_myid =
         )
         
     def testtextmix(self):
-        self.runtest(select(
+        self.assert_compile(select(
             [table1, table2.c.otherid, "sysdate()", "foo, bar, lala"],
             and_(
                 "foo.id = foofoo(lala)",
@@ -630,7 +612,7 @@ WHERE mytable.myid = myothertable.otherid) AS t2view WHERE t2view.mytable_myid =
 FROM mytable, myothertable WHERE foo.id = foofoo(lala) AND datetime(foo) = Today AND mytable.myid = myothertable.otherid")
 
     def testtextualsubquery(self):
-        self.runtest(select(
+        self.assert_compile(select(
             [alias(table1, 't'), "foo.f"],
             "foo.f = t.id",
             from_obj = ["(select f from bar where lala=heyhey) foo"]
@@ -638,7 +620,7 @@ FROM mytable, myothertable WHERE foo.id = foofoo(lala) AND datetime(foo) = Today
         "SELECT t.myid, t.name, t.description, foo.f FROM mytable AS t, (select f from bar where lala=heyhey) foo WHERE foo.f = t.id")
 
     def testliteral(self):
-        self.runtest(select([literal("foo") + literal("bar")], from_obj=[table1]), 
+        self.assert_compile(select([literal("foo") + literal("bar")], from_obj=[table1]), 
             "SELECT :literal || :literal_1 FROM mytable")
 
     def testcalculatedcolumns(self):
@@ -648,19 +630,19 @@ FROM mytable, myothertable WHERE foo.id = foofoo(lala) AND datetime(foo) = Today
              column('val2', Float),
          )
 
-         self.runtest(
+         self.assert_compile(
              select([value_tbl.c.id, (value_tbl.c.val2 -
      value_tbl.c.val1)/value_tbl.c.val1]),
              "SELECT values.id, (values.val2 - values.val1) / values.val1 FROM values"
          )
 
-         self.runtest(
+         self.assert_compile(
              select([value_tbl.c.id], (value_tbl.c.val2 -
      value_tbl.c.val1)/value_tbl.c.val1 > 2.0),
              "SELECT values.id FROM values WHERE (values.val2 - values.val1) / values.val1 > :literal"
          )
 
-         self.runtest(
+         self.assert_compile(
              select([value_tbl.c.id], value_tbl.c.val1 / (value_tbl.c.val2 - value_tbl.c.val1) /value_tbl.c.val1 > 2.0),
              "SELECT values.id FROM values WHERE values.val1 / (values.val2 - values.val1) / values.val1 > :literal"
          )
@@ -668,27 +650,27 @@ FROM mytable, myothertable WHERE foo.id = foofoo(lala) AND datetime(foo) = Today
     def testfunction(self):
         """tests the generation of functions using the func keyword"""
         # test an expression with a function
-        self.runtest(func.lala(3, 4, literal("five"), table1.c.myid) * table2.c.otherid, 
+        self.assert_compile(func.lala(3, 4, literal("five"), table1.c.myid) * table2.c.otherid, 
             "lala(:lala, :lala_1, :literal, mytable.myid) * myothertable.otherid")
 
         # test it in a SELECT
-        self.runtest(select([func.count(table1.c.myid)]), 
+        self.assert_compile(select([func.count(table1.c.myid)]), 
             "SELECT count(mytable.myid) FROM mytable")
 
         # test a "dotted" function name
-        self.runtest(select([func.foo.bar.lala(table1.c.myid)]), 
+        self.assert_compile(select([func.foo.bar.lala(table1.c.myid)]), 
             "SELECT foo.bar.lala(mytable.myid) FROM mytable")
 
         # test the bind parameter name with a "dotted" function name is only the name
         # (limits the length of the bind param name)
-        self.runtest(select([func.foo.bar.lala(12)]), 
+        self.assert_compile(select([func.foo.bar.lala(12)]), 
             "SELECT foo.bar.lala(:lala)")
 
         # test a dotted func off the engine itself
-        self.runtest(func.lala.hoho(7), "lala.hoho(:hoho)")
+        self.assert_compile(func.lala.hoho(7), "lala.hoho(:hoho)")
         
         # test None becomes NULL
-        self.runtest(func.my_func(1,2,None,3), "my_func(:my_func, :my_func_1, NULL, :my_func_2)")
+        self.assert_compile(func.my_func(1,2,None,3), "my_func(:my_func, :my_func_1, NULL, :my_func_2)")
         
         # assert func raises AttributeError for __bases__ attribute, since its not a class
         # fixes pydoc
@@ -700,38 +682,38 @@ FROM mytable, myothertable WHERE foo.id = foofoo(lala) AND datetime(foo) = Today
         
     def testextract(self):
         """test the EXTRACT function"""
-        self.runtest(select([extract("month", table3.c.otherstuff)]), "SELECT extract(month FROM thirdtable.otherstuff) FROM thirdtable")
+        self.assert_compile(select([extract("month", table3.c.otherstuff)]), "SELECT extract(month FROM thirdtable.otherstuff) FROM thirdtable")
         
-        self.runtest(select([extract("day", func.to_date("03/20/2005", "MM/DD/YYYY"))]), "SELECT extract(day FROM to_date(:to_date, :to_date_1))")
+        self.assert_compile(select([extract("day", func.to_date("03/20/2005", "MM/DD/YYYY"))]), "SELECT extract(day FROM to_date(:to_date, :to_date_1))")
         
     def testjoin(self):
-        self.runtest(
+        self.assert_compile(
             join(table2, table1, table1.c.myid == table2.c.otherid).select(),
             "SELECT myothertable.otherid, myothertable.othername, mytable.myid, mytable.name, \
 mytable.description FROM myothertable JOIN mytable ON mytable.myid = myothertable.otherid"
         )
 
-        self.runtest(
+        self.assert_compile(
             select(
              [table1],
                 from_obj = [join(table1, table2, table1.c.myid == table2.c.otherid)]
             ),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable JOIN myothertable ON mytable.myid = myothertable.otherid")
 
-        self.runtest(
+        self.assert_compile(
             select(
                 [join(join(table1, table2, table1.c.myid == table2.c.otherid), table3, table1.c.myid == table3.c.userid)
             ]),
             "SELECT mytable.myid, mytable.name, mytable.description, myothertable.otherid, myothertable.othername, thirdtable.userid, thirdtable.otherstuff FROM mytable JOIN myothertable ON mytable.myid = myothertable.otherid JOIN thirdtable ON mytable.myid = thirdtable.userid"
         )
         
-        self.runtest(
+        self.assert_compile(
             join(users, addresses, users.c.user_id==addresses.c.user_id).select(),
             "SELECT users.user_id, users.user_name, users.password, addresses.address_id, addresses.user_id, addresses.street, addresses.city, addresses.state, addresses.zip FROM users JOIN addresses ON users.user_id = addresses.user_id"
         )
         
     def testmultijoin(self):
-        self.runtest(
+        self.assert_compile(
                 select([table1, table2, table3],
                 
                 from_obj = [join(table1, table2, table1.c.myid == table2.c.otherid).outerjoin(table3, table1.c.myid==table3.c.userid)]
@@ -740,7 +722,7 @@ mytable.description FROM myothertable JOIN mytable ON mytable.myid = myothertabl
                 )
                 ,"SELECT mytable.myid, mytable.name, mytable.description, myothertable.otherid, myothertable.othername, thirdtable.userid, thirdtable.otherstuff FROM mytable JOIN myothertable ON mytable.myid = myothertable.otherid LEFT OUTER JOIN thirdtable ON mytable.myid = thirdtable.userid"
             )
-        self.runtest(
+        self.assert_compile(
                 select([table1, table2, table3],
                 from_obj = [outerjoin(table1, join(table2, table3, table2.c.otherid == table3.c.userid), table1.c.myid==table2.c.otherid)]
                 )
@@ -754,12 +736,12 @@ mytable.description FROM myothertable JOIN mytable ON mytable.myid = myothertabl
                   order_by = [table1.c.myid],
             )
   
-            self.runtest(x, "SELECT mytable.myid, mytable.name, mytable.description \
+            self.assert_compile(x, "SELECT mytable.myid, mytable.name, mytable.description \
 FROM mytable WHERE mytable.myid = :mytable_myid UNION \
 SELECT mytable.myid, mytable.name, mytable.description \
 FROM mytable WHERE mytable.myid = :mytable_myid_1 ORDER BY mytable.myid")
   
-            self.runtest(
+            self.assert_compile(
                     union(
                         select([table1]),
                         select([table2]),
@@ -777,7 +759,7 @@ FROM myothertable UNION SELECT thirdtable.userid, thirdtable.otherstuff FROM thi
             )
             assert u.corresponding_column(table2.c.otherid) is u.c.otherid
             
-            self.runtest(
+            self.assert_compile(
                 union(
                     select([table1]),
                     select([table2]),
@@ -791,7 +773,7 @@ FROM myothertable ORDER BY myid \
  LIMIT 5 OFFSET 10"
             )
             
-            self.runtest(
+            self.assert_compile(
                 union(
                     select([table1.c.myid, table1.c.name, func.max(table1.c.description)], table1.c.name=='name2', group_by=[table1.c.myid, table1.c.name]),
                     table1.select(table1.c.name=='name1')
@@ -803,7 +785,7 @@ FROM mytable WHERE mytable.name = :mytable_name_1"
             )
 
     def test_compound_select_grouping(self):
-            self.runtest(
+            self.assert_compile(
                 union_all(
                     select([table1.c.myid]),
                     union(
@@ -816,7 +798,7 @@ FROM mytable WHERE mytable.name = :mytable_name_1"
 SELECT thirdtable.userid FROM thirdtable)"
             )
             # This doesn't need grouping, so don't group to not give sqlite unnecessarily hard time
-            self.runtest(
+            self.assert_compile(
                 union(
                     except_(
                         select([table2.c.otherid]),
@@ -830,11 +812,6 @@ UNION SELECT mytable.myid FROM mytable"
             )
             
     def testouterjoin(self):
-        # test an outer join.  the oracle module should take the ON clause of the join and
-        # move it up to the WHERE clause of its parent select, and append (+) to all right-hand-side columns
-        # within the original onclause, but leave right-hand-side columns unchanged outside of the onclause
-        # parameters.
-        
         query = select(
                 [table1, table2],
                 or_(
@@ -845,7 +822,7 @@ UNION SELECT mytable.myid FROM mytable"
                 ),
                 from_obj = [ outerjoin(table1, table2, table1.c.myid == table2.c.otherid) ]
                 )
-        self.runtest(query, 
+        self.assert_compile(query, 
             "SELECT mytable.myid, mytable.name, mytable.description, myothertable.otherid, myothertable.othername \
 FROM mytable LEFT OUTER JOIN myothertable ON mytable.myid = myothertable.otherid \
 WHERE mytable.name = %(mytable_name)s OR mytable.myid = %(mytable_myid)s OR \
@@ -854,18 +831,6 @@ EXISTS (select yay from foo where boo = lar)",
             dialect=postgres.dialect()
             )
 
-
-        self.runtest(query, 
-            "SELECT mytable.myid, mytable.name, mytable.description, myothertable.otherid, myothertable.othername \
-FROM mytable, myothertable WHERE mytable.myid = myothertable.otherid(+) AND \
-(mytable.name = :mytable_name OR mytable.myid = :mytable_myid OR \
-myothertable.othername != :myothertable_othername OR EXISTS (select yay from foo where boo = lar))",
-            dialect=oracle.OracleDialect(use_ansi = False))
-
-        query = table1.outerjoin(table2, table1.c.myid==table2.c.otherid).outerjoin(table3, table3.c.userid==table2.c.otherid)
-        self.runtest(query.select(), "SELECT mytable.myid, mytable.name, mytable.description, myothertable.otherid, myothertable.othername, thirdtable.userid, thirdtable.otherstuff FROM mytable LEFT OUTER JOIN myothertable ON mytable.myid = myothertable.otherid LEFT OUTER JOIN thirdtable ON thirdtable.userid = myothertable.otherid")
-        self.runtest(query.select(), "SELECT mytable.myid, mytable.name, mytable.description, myothertable.otherid, myothertable.othername, thirdtable.userid, thirdtable.otherstuff FROM mytable, myothertable, thirdtable WHERE mytable.myid = myothertable.otherid(+) AND thirdtable.userid(+) = myothertable.otherid", dialect=oracle.dialect(use_ansi=False))    
-
     def testbindparam(self):
         for (
              stmt,
@@ -933,8 +898,8 @@ myothertable.othername != :myothertable_othername OR EXISTS (select yay from foo
              ),
              ]:
              
-                self.runtest(stmt, expected_named_stmt, params=expected_default_params_dict)
-                self.runtest(stmt, expected_positional_stmt, dialect=sqlite.dialect())
+                self.assert_compile(stmt, expected_named_stmt, params=expected_default_params_dict)
+                self.assert_compile(stmt, expected_positional_stmt, dialect=sqlite.dialect())
                 nonpositional = stmt.compile()
                 positional = stmt.compile(dialect=sqlite.dialect())
                 assert positional.get_params().get_raw_list() == expected_default_params_list
@@ -975,68 +940,68 @@ myothertable.othername != :myothertable_othername OR EXISTS (select yay from foo
         t = table('foo', column('id'))
 
         s = select([t, literal('lala').label('hoho')])
-        self.runtest(s, "SELECT foo.id, :literal AS hoho FROM foo")
+        self.assert_compile(s, "SELECT foo.id, :literal AS hoho FROM foo")
         assert [str(c) for c in s.c] == ["id", "hoho"]
         
     def testin(self):
-        self.runtest(select([table1], table1.c.myid.in_('a')),
+        self.assert_compile(select([table1], table1.c.myid.in_('a')),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = :mytable_myid")
 
-        self.runtest(select([table1], table1.c.myid.in_('a', 'b')),
+        self.assert_compile(select([table1], table1.c.myid.in_('a', 'b')),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid IN (:mytable_myid, :mytable_myid_1)")
 
-        self.runtest(select([table1], table1.c.myid.in_(literal('a'))),
+        self.assert_compile(select([table1], table1.c.myid.in_(literal('a'))),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = :literal")
 
-        self.runtest(select([table1], table1.c.myid.in_(literal('a'), 'b')),
+        self.assert_compile(select([table1], table1.c.myid.in_(literal('a'), 'b')),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid IN (:literal, :mytable_myid)")
 
-        self.runtest(select([table1], table1.c.myid.in_(literal('a'), literal('b'))),
+        self.assert_compile(select([table1], table1.c.myid.in_(literal('a'), literal('b'))),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid IN (:literal, :literal_1)")
 
-        self.runtest(select([table1], table1.c.myid.in_('a', literal('b'))),
+        self.assert_compile(select([table1], table1.c.myid.in_('a', literal('b'))),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid IN (:mytable_myid, :literal)")
 
-        self.runtest(select([table1], table1.c.myid.in_(literal(1) + 'a')),
+        self.assert_compile(select([table1], table1.c.myid.in_(literal(1) + 'a')),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = :literal + :literal_1")
 
-        self.runtest(select([table1], table1.c.myid.in_(literal('a') +'a', 'b')),
+        self.assert_compile(select([table1], table1.c.myid.in_(literal('a') +'a', 'b')),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid IN (:literal || :literal_1, :mytable_myid)")
 
-        self.runtest(select([table1], table1.c.myid.in_(literal('a') + literal('a'), literal('b'))),
+        self.assert_compile(select([table1], table1.c.myid.in_(literal('a') + literal('a'), literal('b'))),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid IN (:literal || :literal_1, :literal_2)")
 
-        self.runtest(select([table1], table1.c.myid.in_(1, literal(3) + 4)),
+        self.assert_compile(select([table1], table1.c.myid.in_(1, literal(3) + 4)),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid IN (:mytable_myid, :literal + :literal_1)")
 
-        self.runtest(select([table1], table1.c.myid.in_(literal('a') < 'b')),
+        self.assert_compile(select([table1], table1.c.myid.in_(literal('a') < 'b')),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = (:literal < :literal_1)")
 
-        self.runtest(select([table1], table1.c.myid.in_(table1.c.myid)),
+        self.assert_compile(select([table1], table1.c.myid.in_(table1.c.myid)),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = mytable.myid")
 
-        self.runtest(select([table1], table1.c.myid.in_('a', table1.c.myid)),
+        self.assert_compile(select([table1], table1.c.myid.in_('a', table1.c.myid)),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid IN (:mytable_myid, mytable.myid)")
 
-        self.runtest(select([table1], table1.c.myid.in_(literal('a'), table1.c.myid)),
+        self.assert_compile(select([table1], table1.c.myid.in_(literal('a'), table1.c.myid)),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid IN (:literal, mytable.myid)")
 
-        self.runtest(select([table1], table1.c.myid.in_(literal('a'), table1.c.myid +'a')),
+        self.assert_compile(select([table1], table1.c.myid.in_(literal('a'), table1.c.myid +'a')),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid IN (:literal, mytable.myid + :mytable_myid)")
 
-        self.runtest(select([table1], table1.c.myid.in_(literal(1), 'a' + table1.c.myid)),
+        self.assert_compile(select([table1], table1.c.myid.in_(literal(1), 'a' + table1.c.myid)),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid IN (:literal, :mytable_myid + mytable.myid)")
 
-        self.runtest(select([table1], table1.c.myid.in_(1, 2, 3)),
+        self.assert_compile(select([table1], table1.c.myid.in_(1, 2, 3)),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid IN (:mytable_myid, :mytable_myid_1, :mytable_myid_2)")
 
-        self.runtest(select([table1], table1.c.myid.in_(select([table2.c.otherid]))),
+        self.assert_compile(select([table1], table1.c.myid.in_(select([table2.c.otherid]))),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid IN (SELECT myothertable.otherid FROM myothertable)")
 
-        self.runtest(select([table1], ~table1.c.myid.in_(select([table2.c.otherid]))),
+        self.assert_compile(select([table1], ~table1.c.myid.in_(select([table2.c.otherid]))),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid NOT IN (SELECT myothertable.otherid FROM myothertable)")
 
-        self.runtest(select([table1], table1.c.myid.in_(
+        self.assert_compile(select([table1], table1.c.myid.in_(
             union(
                   select([table1], table1.c.myid == 5),
                   select([table1], table1.c.myid == 12),
@@ -1047,7 +1012,7 @@ SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytabl
 UNION SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE mytable.myid = :mytable_myid_1)")
         
         # test that putting a select in an IN clause does not blow away its ORDER BY clause
-        self.runtest(
+        self.assert_compile(
             select([table1, table2], 
                 table2.c.otherid.in_(
                     select([table2.c.otherid], order_by=[table2.c.othername], limit=10, correlate=False)
@@ -1058,7 +1023,7 @@ UNION SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE
         )
         
         # test empty in clause
-        self.runtest(select([table1], table1.c.myid.in_()),
+        self.assert_compile(select([table1], table1.c.myid.in_()),
         "SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE (CASE WHEN (mytable.myid IS NULL) THEN NULL ELSE 0 END = 1)")
         
     
@@ -1096,82 +1061,82 @@ UNION SELECT mytable.myid, mytable.name, mytable.description FROM mytable WHERE
         import datetime
         table = Table('dt', metadata, 
             Column('date', Date))
-        self.runtest(table.select(table.c.date.between(datetime.date(2006,6,1), datetime.date(2006,6,5))), "SELECT dt.date FROM dt WHERE dt.date BETWEEN :dt_date AND :dt_date_1", checkparams={'dt_date':datetime.date(2006,6,1), 'dt_date_1':datetime.date(2006,6,5)})
+        self.assert_compile(table.select(table.c.date.between(datetime.date(2006,6,1), datetime.date(2006,6,5))), "SELECT dt.date FROM dt WHERE dt.date BETWEEN :dt_date AND :dt_date_1", checkparams={'dt_date':datetime.date(2006,6,1), 'dt_date_1':datetime.date(2006,6,5)})
 
-        self.runtest(table.select(sql.between(table.c.date, datetime.date(2006,6,1), datetime.date(2006,6,5))), "SELECT dt.date FROM dt WHERE dt.date BETWEEN :literal AND :literal_1", checkparams={'literal':datetime.date(2006,6,1), 'literal_1':datetime.date(2006,6,5)})
+        self.assert_compile(table.select(sql.between(table.c.date, datetime.date(2006,6,1), datetime.date(2006,6,5))), "SELECT dt.date FROM dt WHERE dt.date BETWEEN :literal AND :literal_1", checkparams={'literal':datetime.date(2006,6,1), 'literal_1':datetime.date(2006,6,5)})
     
     def test_operator_precedence(self):
         table = Table('op', metadata,
             Column('field', Integer))
-        self.runtest(table.select((table.c.field == 5) == None),
+        self.assert_compile(table.select((table.c.field == 5) == None),
             "SELECT op.field FROM op WHERE (op.field = :op_field) IS NULL")
-        self.runtest(table.select((table.c.field + 5) == table.c.field),
+        self.assert_compile(table.select((table.c.field + 5) == table.c.field),
             "SELECT op.field FROM op WHERE op.field + :op_field = op.field")
-        self.runtest(table.select((table.c.field + 5) * 6),
+        self.assert_compile(table.select((table.c.field + 5) * 6),
             "SELECT op.field FROM op WHERE (op.field + :op_field) * :literal")
-        self.runtest(table.select((table.c.field * 5) + 6),
+        self.assert_compile(table.select((table.c.field * 5) + 6),
             "SELECT op.field FROM op WHERE op.field * :op_field + :literal")
-        self.runtest(table.select(5 + table.c.field.in_(5,6)),
+        self.assert_compile(table.select(5 + table.c.field.in_(5,6)),
             "SELECT op.field FROM op WHERE :literal + (op.field IN (:op_field, :op_field_1))")
-        self.runtest(table.select((5 + table.c.field).in_(5,6)),
+        self.assert_compile(table.select((5 + table.c.field).in_(5,6)),
             "SELECT op.field FROM op WHERE :op_field + op.field IN (:literal, :literal_1)")
-        self.runtest(table.select(not_(and_(table.c.field == 5, table.c.field == 7))),
+        self.assert_compile(table.select(not_(and_(table.c.field == 5, table.c.field == 7))),
             "SELECT op.field FROM op WHERE NOT (op.field = :op_field AND op.field = :op_field_1)")
-        self.runtest(table.select(not_(table.c.field) == 5),
+        self.assert_compile(table.select(not_(table.c.field) == 5),
             "SELECT op.field FROM op WHERE (NOT op.field) = :literal")
-        self.runtest(table.select((table.c.field == table.c.field).between(False, True)),
+        self.assert_compile(table.select((table.c.field == table.c.field).between(False, True)),
             "SELECT op.field FROM op WHERE (op.field = op.field) BETWEEN :literal AND :literal_1")
-        self.runtest(table.select(between((table.c.field == table.c.field), False, True)),
+        self.assert_compile(table.select(between((table.c.field == table.c.field), False, True)),
             "SELECT op.field FROM op WHERE (op.field = op.field) BETWEEN :literal AND :literal_1")
 
-class CRUDTest(SQLTest):
+class CRUDTest(SQLCompileTest):
     def testinsert(self):
         # generic insert, will create bind params for all columns
-        self.runtest(insert(table1), "INSERT INTO mytable (myid, name, description) VALUES (:myid, :name, :description)")
+        self.assert_compile(insert(table1), "INSERT INTO mytable (myid, name, description) VALUES (:myid, :name, :description)")
 
         # insert with user-supplied bind params for specific columns,
         # cols provided literally
-        self.runtest(
+        self.assert_compile(
             insert(table1, {table1.c.myid : bindparam('userid'), table1.c.name : bindparam('username')}), 
             "INSERT INTO mytable (myid, name) VALUES (:userid, :username)")
         
         # insert with user-supplied bind params for specific columns, cols
         # provided as strings
-        self.runtest(
+        self.assert_compile(
             insert(table1, dict(myid = 3, name = 'jack')), 
             "INSERT INTO mytable (myid, name) VALUES (:myid, :name)"
         )
 
         # test with a tuple of params instead of named
-        self.runtest(
+        self.assert_compile(
             insert(table1, (3, 'jack', 'mydescription')), 
             "INSERT INTO mytable (myid, name, description) VALUES (:myid, :name, :description)",
             checkparams = {'myid':3, 'name':'jack', 'description':'mydescription'}
         )
         
-        self.runtest(
+        self.assert_compile(
             insert(table1, values={table1.c.myid : bindparam('userid')}).values({table1.c.name : bindparam('username')}),
             "INSERT INTO mytable (myid, name) VALUES (:userid, :username)"
         )
     
         
     def testinsertexpression(self):
-        self.runtest(insert(table1), "INSERT INTO mytable (myid) VALUES (lala())", params=dict(myid=func.lala()))
+        self.assert_compile(insert(table1), "INSERT INTO mytable (myid) VALUES (lala())", params=dict(myid=func.lala()))
         
     def testupdate(self):
-        self.runtest(update(table1, table1.c.myid == 7), "UPDATE mytable SET name=:name WHERE mytable.myid = :mytable_myid", params = {table1.c.name:'fred'})
-        self.runtest(update(table1, table1.c.myid == 7), "UPDATE mytable SET name=:name WHERE mytable.myid = :mytable_myid", params = {'name':'fred'})
-        self.runtest(update(table1, values = {table1.c.name : table1.c.myid}), "UPDATE mytable SET name=mytable.myid")
-        self.runtest(update(table1, whereclause = table1.c.name == bindparam('crit'), values = {table1.c.name : 'hi'}), "UPDATE mytable SET name=:name WHERE mytable.name = :crit", params = {'crit' : 'notthere'})
-        self.runtest(update(table1, table1.c.myid == 12, values = {table1.c.name : table1.c.myid}), "UPDATE mytable SET name=mytable.myid, description=:description WHERE mytable.myid = :mytable_myid", params = {'description':'test'})
-        self.runtest(update(table1, table1.c.myid == 12, values = {table1.c.myid : 9}), "UPDATE mytable SET myid=:myid, description=:description WHERE mytable.myid = :mytable_myid", params = {'mytable_myid': 12, 'myid': 9, 'description': 'test'})
+        self.assert_compile(update(table1, table1.c.myid == 7), "UPDATE mytable SET name=:name WHERE mytable.myid = :mytable_myid", params = {table1.c.name:'fred'})
+        self.assert_compile(update(table1, table1.c.myid == 7), "UPDATE mytable SET name=:name WHERE mytable.myid = :mytable_myid", params = {'name':'fred'})
+        self.assert_compile(update(table1, values = {table1.c.name : table1.c.myid}), "UPDATE mytable SET name=mytable.myid")
+        self.assert_compile(update(table1, whereclause = table1.c.name == bindparam('crit'), values = {table1.c.name : 'hi'}), "UPDATE mytable SET name=:name WHERE mytable.name = :crit", params = {'crit' : 'notthere'})
+        self.assert_compile(update(table1, table1.c.myid == 12, values = {table1.c.name : table1.c.myid}), "UPDATE mytable SET name=mytable.myid, description=:description WHERE mytable.myid = :mytable_myid", params = {'description':'test'})
+        self.assert_compile(update(table1, table1.c.myid == 12, values = {table1.c.myid : 9}), "UPDATE mytable SET myid=:myid, description=:description WHERE mytable.myid = :mytable_myid", params = {'mytable_myid': 12, 'myid': 9, 'description': 'test'})
         s = table1.update(table1.c.myid == 12, values = {table1.c.name : 'lala'})
         c = s.compile(parameters = {'mytable_id':9,'name':'h0h0'})
-        self.runtest(update(table1, table1.c.myid == 12, values = {table1.c.name : table1.c.myid}).values({table1.c.name:table1.c.name + 'foo'}), "UPDATE mytable SET name=(mytable.name || :mytable_name), description=:description WHERE mytable.myid = :mytable_myid", params = {'description':'test'})
+        self.assert_compile(update(table1, table1.c.myid == 12, values = {table1.c.name : table1.c.myid}).values({table1.c.name:table1.c.name + 'foo'}), "UPDATE mytable SET name=(mytable.name || :mytable_name), description=:description WHERE mytable.myid = :mytable_myid", params = {'description':'test'})
         self.assert_(str(s) == str(c))
         
     def testupdateexpression(self):
-        self.runtest(update(table1, 
+        self.assert_compile(update(table1, 
             (table1.c.myid == func.hoho(4)) &
             (table1.c.name == literal('foo') + table1.c.name + literal('lala')),
             values = {
@@ -1183,60 +1148,60 @@ class CRUDTest(SQLTest):
     def testcorrelatedupdate(self):
         # test against a straight text subquery
         u = update(table1, values = {table1.c.name : text("(select name from mytable where id=mytable.id)")})
-        self.runtest(u, "UPDATE mytable SET name=(select name from mytable where id=mytable.id)")
+        self.assert_compile(u, "UPDATE mytable SET name=(select name from mytable where id=mytable.id)")
 
         mt = table1.alias()
         u = update(table1, values = {table1.c.name : select([mt.c.name], mt.c.myid==table1.c.myid)})
-        self.runtest(u, "UPDATE mytable SET name=(SELECT mytable_1.name FROM mytable AS mytable_1 WHERE mytable_1.myid = mytable.myid)")
+        self.assert_compile(u, "UPDATE mytable SET name=(SELECT mytable_1.name FROM mytable AS mytable_1 WHERE mytable_1.myid = mytable.myid)")
         
         # test against a regular constructed subquery
         s = select([table2], table2.c.otherid == table1.c.myid)
         u = update(table1, table1.c.name == 'jack', values = {table1.c.name : s})
-        self.runtest(u, "UPDATE mytable SET name=(SELECT myothertable.otherid, myothertable.othername FROM myothertable WHERE myothertable.otherid = mytable.myid) WHERE mytable.name = :mytable_name")
+        self.assert_compile(u, "UPDATE mytable SET name=(SELECT myothertable.otherid, myothertable.othername FROM myothertable WHERE myothertable.otherid = mytable.myid) WHERE mytable.name = :mytable_name")
 
         # test a non-correlated WHERE clause
         s = select([table2.c.othername], table2.c.otherid == 7)
         u = update(table1, table1.c.name==s)
-        self.runtest(u, "UPDATE mytable SET myid=:myid, name=:name, description=:description WHERE mytable.name = (SELECT myothertable.othername FROM myothertable WHERE myothertable.otherid = :myothertable_otherid)")
+        self.assert_compile(u, "UPDATE mytable SET myid=:myid, name=:name, description=:description WHERE mytable.name = (SELECT myothertable.othername FROM myothertable WHERE myothertable.otherid = :myothertable_otherid)")
 
         # test one that is actually correlated...
         s = select([table2.c.othername], table2.c.otherid == table1.c.myid)
         u = table1.update(table1.c.name==s)
-        self.runtest(u, "UPDATE mytable SET myid=:myid, name=:name, description=:description WHERE mytable.name = (SELECT myothertable.othername FROM myothertable WHERE myothertable.otherid = mytable.myid)")
+        self.assert_compile(u, "UPDATE mytable SET myid=:myid, name=:name, description=:description WHERE mytable.name = (SELECT myothertable.othername FROM myothertable WHERE myothertable.otherid = mytable.myid)")
         
     def testdelete(self):
-        self.runtest(delete(table1, table1.c.myid == 7), "DELETE FROM mytable WHERE mytable.myid = :mytable_myid")
+        self.assert_compile(delete(table1, table1.c.myid == 7), "DELETE FROM mytable WHERE mytable.myid = :mytable_myid")
     
     def testcorrelateddelete(self):
         # test a non-correlated WHERE clause
         s = select([table2.c.othername], table2.c.otherid == 7)
         u = delete(table1, table1.c.name==s)
-        self.runtest(u, "DELETE FROM mytable WHERE mytable.name = (SELECT myothertable.othername FROM myothertable WHERE myothertable.otherid = :myothertable_otherid)")
+        self.assert_compile(u, "DELETE FROM mytable WHERE mytable.name = (SELECT myothertable.othername FROM myothertable WHERE myothertable.otherid = :myothertable_otherid)")
 
         # test one that is actually correlated...
         s = select([table2.c.othername], table2.c.otherid == table1.c.myid)
         u = table1.delete(table1.c.name==s)
-        self.runtest(u, "DELETE FROM mytable WHERE mytable.name = (SELECT myothertable.othername FROM myothertable WHERE myothertable.otherid = mytable.myid)")
+        self.assert_compile(u, "DELETE FROM mytable WHERE mytable.name = (SELECT myothertable.othername FROM myothertable WHERE myothertable.otherid = mytable.myid)")
             
-class SchemaTest(SQLTest):
+class SchemaTest(SQLCompileTest):
     def testselect(self):
         # these tests will fail with the MS-SQL compiler since it will alias schema-qualified tables
-        self.runtest(table4.select(), "SELECT remotetable.rem_id, remotetable.datatype_id, remotetable.value FROM remote_owner.remotetable")
-        self.runtest(table4.select(and_(table4.c.datatype_id==7, table4.c.value=='hi')), "SELECT remotetable.rem_id, remotetable.datatype_id, remotetable.value FROM remote_owner.remotetable WHERE remotetable.datatype_id = :remotetable_datatype_id AND remotetable.value = :remotetable_value")
+        self.assert_compile(table4.select(), "SELECT remotetable.rem_id, remotetable.datatype_id, remotetable.value FROM remote_owner.remotetable")
+        self.assert_compile(table4.select(and_(table4.c.datatype_id==7, table4.c.value=='hi')), "SELECT remotetable.rem_id, remotetable.datatype_id, remotetable.value FROM remote_owner.remotetable WHERE remotetable.datatype_id = :remotetable_datatype_id AND remotetable.value = :remotetable_value")
 
         s = table4.select(and_(table4.c.datatype_id==7, table4.c.value=='hi'))
         s.use_labels = True
-        self.runtest(s, "SELECT remotetable.rem_id AS remotetable_rem_id, remotetable.datatype_id AS remotetable_datatype_id, remotetable.value AS remotetable_value FROM remote_owner.remotetable WHERE remotetable.datatype_id = :remotetable_datatype_id AND remotetable.value = :remotetable_value")
+        self.assert_compile(s, "SELECT remotetable.rem_id AS remotetable_rem_id, remotetable.datatype_id AS remotetable_datatype_id, remotetable.value AS remotetable_value FROM remote_owner.remotetable WHERE remotetable.datatype_id = :remotetable_datatype_id AND remotetable.value = :remotetable_value")
 
     def testalias(self):
         a = alias(table4, 'remtable')
-        self.runtest(a.select(a.c.datatype_id==7), "SELECT remtable.rem_id, remtable.datatype_id, remtable.value FROM remote_owner.remotetable AS remtable WHERE remtable.datatype_id = :remtable_datatype_id")
+        self.assert_compile(a.select(a.c.datatype_id==7), "SELECT remtable.rem_id, remtable.datatype_id, remtable.value FROM remote_owner.remotetable AS remtable WHERE remtable.datatype_id = :remtable_datatype_id")
         
     def testupdate(self):
-        self.runtest(table4.update(table4.c.value=='test', values={table4.c.datatype_id:12}), "UPDATE remote_owner.remotetable SET datatype_id=:datatype_id WHERE remotetable.value = :remotetable_value")
+        self.assert_compile(table4.update(table4.c.value=='test', values={table4.c.datatype_id:12}), "UPDATE remote_owner.remotetable SET datatype_id=:datatype_id WHERE remotetable.value = :remotetable_value")
         
     def testinsert(self):
-        self.runtest(table4.insert(values=(2, 5, 'test')), "INSERT INTO remote_owner.remotetable (rem_id, datatype_id, value) VALUES (:rem_id, :datatype_id, :value)")
+        self.assert_compile(table4.insert(values=(2, 5, 'test')), "INSERT INTO remote_owner.remotetable (rem_id, datatype_id, value) VALUES (:rem_id, :datatype_id, :value)")
         
 if __name__ == "__main__":
     testbase.main()
diff --git a/test/testlib/__init__.py b/test/testlib/__init__.py
index 3967863b84..bfc2ba04b2 100644
--- a/test/testlib/__init__.py
+++ b/test/testlib/__init__.py
@@ -6,11 +6,11 @@ Load after sqlalchemy imports to use instrumented stand-ins like Table.
 import testlib.config
 from testlib.schema import Table, Column
 import testlib.testing as testing
-from testlib.testing import PersistTest, AssertMixin, ORMTest
+from testlib.testing import PersistTest, AssertMixin, ORMTest, SQLCompileTest
 import testlib.profiling
 import testlib.engines
 
 
 __all__ = ('testing',
            'Table', 'Column',
-           'PersistTest', 'AssertMixin', 'ORMTest')
+           'PersistTest', 'AssertMixin', 'ORMTest', 'SQLCompileTest')
diff --git a/test/testlib/testing.py b/test/testlib/testing.py
index 15a9fd768d..6c1d7ad810 100644
--- a/test/testlib/testing.py
+++ b/test/testlib/testing.py
@@ -9,7 +9,7 @@ import testlib.config as config
 sql, MetaData, clear_mappers = None, None, None
 
 
-__all__ = 'PersistTest', 'AssertMixin', 'ORMTest'
+__all__ = ('PersistTest', 'AssertMixin', 'ORMTest', 'SQLCompileTest')
 
 _ops = { '<': operator.lt,
          '>': operator.gt,
@@ -206,6 +206,25 @@ class PersistTest(unittest.TestCase):
         """overridden to not return docstrings"""
         return None
 
+class SQLCompileTest(PersistTest):
+    def assert_compile(self, clause, result, params=None, checkparams=None, dialect=None):
+        if dialect is None:
+            dialect = getattr(self, '__dialect__', None)
+            
+        c = clause.compile(parameters=params, dialect=dialect)
+
+        print "\nSQL String:\n" + str(c) + repr(c.get_params())
+
+        cc = re.sub(r'\n', '', str(c))
+
+        self.assert_(cc == result, "\n'" + cc + "'\n does not match \n'" + result + "'")
+
+        if checkparams is not None:
+            if isinstance(checkparams, list):
+                self.assert_(c.get_params().get_raw_list() == checkparams, "params dont match ")
+            else:
+                self.assert_(c.get_params().get_original_dict() == checkparams, "params dont match" + repr(c.get_params()))
+
 class AssertMixin(PersistTest):
     """given a list-based structure of keys/properties which represent information within an object structure, and
     a list of actual objects, asserts that the list of objects corresponds to the structure."""