Fix test

diff --git a/test/dialect/postgresql/test_dialect.py b/test/dialect/postgresql/test_dialect.py
index 0567e5728a6fd50e01446af5fbb920a0c622c6d4..1f97895ba3f3dac7ce9e1065e399ba987ba8d256 100644 (file)
--- a/test/dialect/postgresql/test_dialect.py
+++ b/test/dialect/postgresql/test_dialect.py
@@ -788,37 +788,26 @@ class MultiHostConnectTest(fixtures.TestBase):
         ):
             dialect.create_connect_args(u)
 
+
 class NullQueryTest(fixtures.TestBase):
     __backend__ = True
 
-    @testing.only_on(["+psycopg", "+asyncpg"])
-    @testing.combinations(
-        ("postgresql+D://U:PS@/DB?host=H:P&host=H:P&host=H:P"),
-        argnames="pattern",
-    )
-    def test_multiple_host_real_connect(
-        self, testing_engine, pattern
-    ):
-        tdb_url = testing.db.url
+    @testing.only_on(["+psycopg2"])
+    def test_nonfunctional(self, connection):
+        with expect_raises_message(
+            Exception, "can't execute an empty query"
+        ):
+            result = connection.exec_driver_sql("")
 
-        host = tdb_url.host
-        if host == "127.0.0.1":
-            host = "localhost"
-        port = str(tdb_url.port) if tdb_url.port else "5432"
 
-        url_string = (
-            pattern.replace("DB", tdb_url.database)
-            .replace("postgresql+D", tdb_url.drivername)
-            .replace("U", tdb_url.username)
-            .replace("PS", tdb_url.password)
-            .replace("H", host)
-            .replace("P", port)
-        )
-
-        e = testing_engine(url_string)
-        with e.connect() as conn:
-            conn.exec_driver_sql("")
+    @testing.only_on(["+psycopg", "+asyncpg", "+pg8000"])
+    def test_functional(self, connection):
 
+        result = connection.exec_driver_sql("")
+        with expect_raises_message(
+            exc.ResourceClosedError, ""
+        ):
+            result.all()
 
 class BackendDialectTest(fixtures.TestBase):
     __backend__ = True