tests: Run 'warnings' tests

These were never added to the list of filtered modules, meaning they
never actually ran. Correct that and fix the failures, which were caused
by DeprecationWarning being disabled by default in Python 3.2 onwards.

Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

2 files changed, 16 insertions, 3 deletions

diff --git a/fixtures/tests/_fixtures/__init__.py b/fixtures/tests/_fixtures/__init__.py
index 1b4c359..b76244a 100644
--- a/fixtures/tests/_fixtures/__init__.py
+++ b/fixtures/tests/_fixtures/__init__.py
@@ -1,12 +1,12 @@
 #  fixtures: Fixtures with cleanups for testing and convenience.
 #
 # Copyright (c) 2010, Robert Collins <robertc@robertcollins.net>
-# 
+#
 # Licensed under either the Apache License, Version 2.0 or the BSD 3-clause
 # license at the users choice. A copy of both licenses are available in the
 # project source as Apache-2.0 and BSD. You may not use this file except in
 # compliance with one of these two licences.
-# 
+#
 # Unless required by applicable law or agreed to in writing, software
 # distributed under these licenses is distributed on an "AS IS" BASIS, WITHOUT
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
@@ -27,7 +27,8 @@ def load_tests(loader, standard_tests, pattern):
         'tempdir',
         'temphomedir',
         'timeout',
-        ]
+        'warnings',
+    ]
     prefix = "fixtures.tests._fixtures.test_"
     test_mod_names = [prefix + test_module for test_module in test_modules]
     standard_tests.addTests(loader.loadTestsFromNames(test_mod_names))
diff --git a/fixtures/tests/_fixtures/test_warnings.py b/fixtures/tests/_fixtures/test_warnings.py
index 4731626..c9e68bf 100644
--- a/fixtures/tests/_fixtures/test_warnings.py
+++ b/fixtures/tests/_fixtures/test_warnings.py
@@ -21,6 +21,10 @@ import fixtures
 class TestWarnings(testtools.TestCase, fixtures.TestWithFixtures):
 
     def test_capture_reuse(self):
+        # DeprecationWarnings are hidden by default in Python 3.2+, enable them
+        # https://docs.python.org/3/library/warnings.html#default-warning-filter
+        warnings.simplefilter("always")
+
         w = fixtures.WarningsCapture()
         with w:
             warnings.warn("test", DeprecationWarning)
@@ -29,12 +33,20 @@ class TestWarnings(testtools.TestCase, fixtures.TestWithFixtures):
             self.assertEqual([], w.captures)
 
     def test_capture_message(self):
+        # DeprecationWarnings are hidden by default in Python 3.2+, enable them
+        # https://docs.python.org/3/library/warnings.html#default-warning-filter
+        warnings.simplefilter("always")
+
         w = self.useFixture(fixtures.WarningsCapture())
         warnings.warn("hi", DeprecationWarning)
         self.assertEqual(1, len(w.captures))
         self.assertEqual("hi", str(w.captures[0].message))
 
     def test_capture_category(self):
+        # DeprecationWarnings are hidden by default in Python 3.2+, enable them
+        # https://docs.python.org/3/library/warnings.html#default-warning-filter
+        warnings.simplefilter("always")
+
         w = self.useFixture(fixtures.WarningsCapture())
         categories = [
             DeprecationWarning, Warning, UserWarning,