Make PyPIRCCommandTestCase derive from a base class

Several test cases in distutils use PyPIRCCommandTestCase as
their base class and as a result of that the following tests
were ran more than once:

* test_server_registration
* test_server_empty_registration
* test_config_interpolation

This commit moves the infrastructure used by other tests
into a new BasePyPIRCCommandTestCase class.

1 files changed, 6 insertions, 3 deletions

diff --git a/Lib/distutils/tests/test_config.py b/Lib/distutils/tests/test_config.py
index 0b91d19a54..3dd92d6166 100644
--- a/Lib/distutils/tests/test_config.py
+++ b/Lib/distutils/tests/test_config.py
@@ -52,14 +52,14 @@ password:xxx
 """
 
 
-class PyPIRCCommandTestCase(support.TempdirManager,
+class BasePyPIRCCommandTestCase(support.TempdirManager,
                             support.LoggingSilencer,
                             support.EnvironGuard,
                             unittest.TestCase):
 
     def setUp(self):
         """Patches the environment."""
-        super(PyPIRCCommandTestCase, self).setUp()
+        super(BasePyPIRCCommandTestCase, self).setUp()
         self.tmp_dir = self.mkdtemp()
         os.environ['HOME'] = self.tmp_dir
         self.rc = os.path.join(self.tmp_dir, '.pypirc')
@@ -78,7 +78,10 @@ class PyPIRCCommandTestCase(support.TempdirManager,
     def tearDown(self):
         """Removes the patch."""
         set_threshold(self.old_threshold)
-        super(PyPIRCCommandTestCase, self).tearDown()
+        super(BasePyPIRCCommandTestCase, self).tearDown()
+
+
+class PyPIRCCommandTestCase(BasePyPIRCCommandTestCase):
 
     def test_server_registration(self):
         # This test makes sure PyPIRCCommand knows how to: