test: fix dbapi test connection resource warnings

DBAPI2 compliance tests are not implemented here but inherited from
external module [1]. Two tests from this module open a connection and
forget to close it. The fix [2] has been merged but there is no new tag
yet [2].

1. https://pypi.org/project/dbapi-compliance/
2. baztian/dbapi-compliance#5

Follows #250

Author: DifferentialOrange

requirements-test.txt

@@ -1,3 +1,3 @@
-dbapi-compliance==1.15.0
+git+https://github.com/baztian/dbapi-compliance.git@ea7cb1b4#egg=dbapi-compliance
 pyyaml==6.0
 importlib-metadata >= 1.0 ; python_version < '3.8'

test/suites/test_dbapi.py

@@ -127,43 +127,3 @@ def test_setoutputsize(self):  # Do nothing
     @unittest.skip('Not implemented')
     def test_description(self):
         pass
-
-    def test_ExceptionsAsConnectionAttributes(self):
-        # Workaround for https://github.com/baztian/dbapi-compliance/issues/5
-
-        # OPTIONAL EXTENSION 
-        # Test for the optional DB API 2.0 extension, where the exceptions 
-        # are exposed as attributes on the Connection object 
-        # I figure this optional extension will be implemented by any 
-        # driver author who is using this test suite, so it is enabled 
-        # by default. 
-        drv = self.driver
-        con = self._connect()
-        try:
-            dbapi20._failUnless(self,con.Warning is drv.Warning)
-            dbapi20._failUnless(self,con.Error is drv.Error)
-            dbapi20._failUnless(self,con.InterfaceError is drv.InterfaceError)
-            dbapi20._failUnless(self,con.DatabaseError is drv.DatabaseError)
-            dbapi20._failUnless(self,con.OperationalError is drv.OperationalError)
-            dbapi20._failUnless(self,con.IntegrityError is drv.IntegrityError)
-            dbapi20._failUnless(self,con.InternalError is drv.InternalError)
-            dbapi20._failUnless(self,con.ProgrammingError is drv.ProgrammingError)
-            dbapi20. _failUnless(self,con.NotSupportedError is drv.NotSupportedError)
-        finally:
-            con.close()
-
-
-    def test_rollback(self):
-        # Workaround for https://github.com/baztian/dbapi-compliance/issues/5
-
-        con = self._connect()
-        try:
-            # If rollback is defined, it should either work or throw
-            # the documented exception
-            if hasattr(con,'rollback'):
-                try:
-                    con.rollback()
-                except self.driver.NotSupportedError:
-                    pass
-        finally:
-            con.close()