Add tests for str() handling in DNSException.

diff --git a/tests/test_exceptions.py b/tests/test_exceptions.py
new file mode 100644 (file)
index 0000000..3fd7331
--- /dev/null
+++ b/tests/test_exceptions.py
@@ -0,0 +1,38 @@
+# Copyright (C) 2006, 2007, 2009-2011 Nominum, Inc.
+#
+# Permission to use, copy, modify, and distribute this software and its
+# documentation for any purpose with or without fee is hereby granted,
+# provided that the above copyright notice and this permission notice
+# appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+import binascii
+import unittest
+
+from dns.exception import DNSException
+
+class ExceptionTestCase(unittest.TestCase):
+
+    def test_custom_message(self):
+        msg = "this is a custom message"
+        try:
+            raise DNSException(msg)
+        except DNSException as ex:
+            self.assertEqual(str(ex), msg)
+
+    def test_implicit_message(self):
+        try:
+            raise DNSException()
+        except DNSException as ex:
+            self.assertEqual(ex.__class__.__doc__, str(ex))
+
+
+if __name__ == '__main__':
+    unittest.main()