Remove duplicate git setup in tests.

Less duplication for more reuse. If the intent was clarity before, I'm
happy to skip this and just have duplicate code...

Change-Id: I09fd14ecd9751e79a3a475dedf320c36ba0ba71c

2 files changed, 31 insertions, 8 deletions

diff --git a/pbr/tests/base.py b/pbr/tests/base.py
index f18dadc..6c31bc9 100644
--- a/pbr/tests/base.py
+++ b/pbr/tests/base.py
@@ -92,6 +92,10 @@ class BaseTestCase(testtools.TestCase, testresources.ResourcedTestCase):
         self.log_fixture = self.useFixture(
             fixtures.FakeLogger('pbr'))
 
+        # Older git does not have config --local, so create a temporary home
+        # directory to permit using git config --global without stepping on
+        # developer configuration.
+        self.useFixture(fixtures.TempHomeDir())
         self.useFixture(fixtures.NestedTempfile())
         self.useFixture(fixtures.FakeLogger())
         self.useFixture(fixtures.EnvironmentVariable('PBR_VERSION', '0.0'))
diff --git a/pbr/tests/test_packaging.py b/pbr/tests/test_packaging.py
index 029f378..d01c4fb 100644
--- a/pbr/tests/test_packaging.py
+++ b/pbr/tests/test_packaging.py
@@ -47,16 +47,36 @@ from pbr import packaging
 from pbr.tests import base
 
 
+class TestRepo(fixtures.Fixture):
+    """A git repo for testing with.
+
+    Use of TempHomeDir with this fixture is strongly recommended as due to the
+    lack of config --local in older gits, it will write to the users global
+    configuration without TempHomeDir.
+    """
+
+    def __init__(self, basedir):
+        super(TestRepo, self).__init__()
+        self._basedir = basedir
+
+    def setUp(self):
+        super(TestRepo, self).setUp()
+        base._run_cmd(['git', 'init', '.'], self._basedir)
+        base._run_cmd(
+            ['git', 'config', '--global', 'user.email', 'example@example.com'],
+            self._basedir)
+        base._run_cmd(['git', 'add', '.'], self._basedir)
+
+    def commit(self):
+        base._run_cmd(['git', 'commit', '-m', 'test commit'], self._basedir)
+
+
 class TestPackagingInGitRepoWithCommit(base.BaseTestCase):
 
     def setUp(self):
         super(TestPackagingInGitRepoWithCommit, self).setUp()
-        self.useFixture(fixtures.TempHomeDir())
-        self._run_cmd(
-            'git', ['config', '--global', 'user.email', 'nobody@example.com'])
-        self._run_cmd('git', ['init', '.'])
-        self._run_cmd('git', ['add', '.'])
-        self._run_cmd('git', ['commit', '-m', 'test commit'])
+        repo = self.useFixture(TestRepo(self.package_dir))
+        repo.commit()
         self.run_setup('sdist')
         return
 
@@ -77,8 +97,7 @@ class TestPackagingInGitRepoWithoutCommit(base.BaseTestCase):
 
     def setUp(self):
         super(TestPackagingInGitRepoWithoutCommit, self).setUp()
-        self._run_cmd('git', ['init', '.'])
-        self._run_cmd('git', ['add', '.'])
+        self.useFixture(TestRepo(self.package_dir))
         self.run_setup('sdist')
         return