win: GC.collect on all TC.tearDown to fix appveyor hang runs

+ Fixed the hangs at `test_git:TestGit.test_handle_process_output()`.
[travisci skip]

Author: ankostis

git/test/lib/helper.py

@@ -299,6 +299,8 @@ def setUpClass(cls):
         Dynamically add a read-only repository to our actual type. This way
         each test type has its own repository
         """
+        import gc
+        gc.collect()
         cls.rorepo = Repo(GIT_REPO)
 
     @classmethod

git/test/performance/test_commit.py

@@ -17,6 +17,10 @@
 
 class TestPerformance(TestBigRepoRW):
 
+    def tearDown(self):
+        import gc
+        gc.collect()
+
     # ref with about 100 commits in its history
     ref_100 = '0.1.6'
 

git/test/test_base.py

@@ -27,6 +27,10 @@
 
 class TestBase(TestBase):
 
+    def tearDown(self):
+        import gc
+        gc.collect()
+
     type_tuples = (("blob", "8741fc1d09d61f02ffd8cded15ff603eff1ec070", "blob.py"),
                    ("tree", "3a6a5e3eeed3723c09f1ef0399f81ed6b8d82e79", "directory"),
                    ("commit", "4251bd59fb8e11e40c40548cba38180a9536118c", None),

git/test/test_diff.py

@@ -28,6 +28,10 @@
 
 class TestDiff(TestBase):
 
+    def tearDown(self):
+        import gc
+        gc.collect()
+
     def _assert_diff_format(self, diffs):
         # verify that the format of the diff is sane
         for diff in diffs:
@@ -107,12 +111,12 @@ def test_diff_with_rename(self):
     def test_diff_of_modified_files_not_added_to_the_index(self):
         output = StringProcessAdapter(fixture('diff_abbrev-40_full-index_M_raw_no-color'))
         diffs = Diff._index_from_raw_format(self.rorepo, output.stdout)
-        
+
         assert len(diffs) == 1, 'one modification'
         assert len(list(diffs.iter_change_type('M'))) == 1, 'one modification'
         assert diffs[0].change_type == 'M'
         assert diffs[0].b_blob is None
-        
+
     def test_binary_diff(self):
         for method, file_name in ((Diff._index_from_patch_format, 'diff_patch_binary'),
                                   (Diff._index_from_raw_format, 'diff_raw_binary')):

git/test/test_docs.py

@@ -11,6 +11,11 @@
 
 
 class Tutorials(TestBase):
+
+    def tearDown(self):
+        import gc
+        gc.collect()
+
     @with_rw_directory
     def test_init_repo_object(self, rw_dir):
         # [1-test_init_repo_object]
@@ -64,7 +69,7 @@ def test_init_repo_object(self, rw_dir):
         assert repo.head.ref == repo.heads.master                   # head is a symbolic reference pointing to master
         assert repo.tags['0.3.5'] == repo.tag('refs/tags/0.3.5')    # you can access tags in various ways too
         assert repo.refs.master == repo.heads['master']             # .refs provides access to all refs, i.e. heads ...
-        
+
         if 'TRAVIS' not in os.environ:
             assert repo.refs['origin/master'] == repo.remotes.origin.refs.master  # ... remotes ...
         assert repo.refs['0.3.5'] == repo.tags['0.3.5']             # ... and tags

git/test/test_git.py

@@ -40,6 +40,10 @@ def setUpClass(cls):
         super(TestGit, cls).setUpClass()
         cls.git = Git(cls.rorepo.working_dir)
 
+    def tearDown(self):
+        import gc
+        gc.collect()
+
     @patch.object(Git, 'execute')
     def test_call_process_calls_execute(self, git):
         git.return_value = ''

git/test/test_remote.py

@@ -101,6 +101,10 @@ def assert_received_message(self):
 
 class TestRemote(TestBase):
 
+    def tearDown(self):
+        import gc
+        gc.collect()
+
     def _print_fetchhead(self, repo):
         fp = open(os.path.join(repo.git_dir, "FETCH_HEAD"))
         fp.close()

git/test/test_repo.py

@@ -64,6 +64,10 @@ def flatten(lol):
 
 class TestRepo(TestBase):
 
+    def tearDown(self):
+        import gc
+        gc.collect()
+
     @raises(InvalidGitRepositoryError)
     def test_new_should_raise_on_invalid_repo_location(self):
         Repo(tempfile.gettempdir())

git/test/test_submodule.py

@@ -49,6 +49,10 @@ def update(self, op, cur_count, max_count, message=''):
 
 class TestSubmodule(TestBase):
 
+    def tearDown(self):
+        import gc
+        gc.collect()
+
     k_subm_current = "c15a6e1923a14bc760851913858a3942a4193cdb"
     k_subm_changed = "394ed7006ee5dc8bddfd132b64001d5dfc0ffdd3"
     k_no_subm_tag = "0.1.6"