Refactor infra git libs and testing.

infra/libs/git2/test/util_test.py

Index: infra/libs/git2/test/util_test.py
diff --git a/infra/libs/git2/test/util_test.py b/infra/libs/git2/test/util_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..471d2ff76de4d0472a480242bec223c81475b7ea
--- /dev/null
+++ b/infra/libs/git2/test/util_test.py
@@ -0,0 +1,63 @@
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import unittest
+import textwrap
+
+from infra.libs.git2 import util
+
+
+class TestInvalid(unittest.TestCase):
+  def testBasic(self):
+    self.assertIs(util.INVALID, util.INVALID)
+    self.assertIs(util.INVALID.bob, util.INVALID)
+    self.assertIs(util.INVALID('cat', dog='food'), util.INVALID)
+    self.assertTrue(not (util.INVALID == util.INVALID))
+    self.assertNotEqual(util.INVALID, util.INVALID)
+
+
+class TestCalledProcessError(unittest.TestCase):
+  def testBasic(self):
+    cpe = util.CalledProcessError(100, ('cat', 'dog'), None, None)
+    self.assertEqual(
+        str(cpe), "Command ('cat', 'dog') returned non-zero exit status 100.\n")
+
+  def testErr(self):
+    cpe = util.CalledProcessError(
+        100, ('cat', 'dog'), None,
+        'Cat says the dog smells funny.\nCat is not amused.')
+
+    self.assertEqual(str(cpe), textwrap.dedent('''\
+    Command ('cat', 'dog') returned non-zero exit status 100:
+    STDERR ========================================
+      Cat says the dog smells funny.
+      Cat is not amused.
+    '''))
+
+  def testOut(self):
+    cpe = util.CalledProcessError(
+        100, ('cat', 'dog'),
+        'This totally worked! Squirrels are awesome!',
+        '')
+
+    self.assertEqual(str(cpe), textwrap.dedent('''\
+    Command ('cat', 'dog') returned non-zero exit status 100:
+    STDOUT ========================================
+      This totally worked! Squirrels are awesome!
+    '''))
+
+  def testBoth(self):
+    cpe = util.CalledProcessError(
+        100, ('cat', 'dog'),
+        'This totally worked! Squirrels are awesome!',
+        'Cat says the dog smells funny.\nCat is not amused.')
+
+    self.assertEqual(str(cpe), textwrap.dedent('''\
+    Command ('cat', 'dog') returned non-zero exit status 100:
+    STDOUT ========================================
+      This totally worked! Squirrels are awesome!
+    STDERR ========================================
+      Cat says the dog smells funny.
+      Cat is not amused.
+    '''))