Copied files from depot_tools.

testing_support/tests/trial_dir_test.py

Index: testing_support/tests/trial_dir_test.py
diff --git a/testing_support/tests/trial_dir_test.py b/testing_support/tests/trial_dir_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..5b05c3b8b99622418533812514a7791890065b5d
--- /dev/null
+++ b/testing_support/tests/trial_dir_test.py
@@ -0,0 +1,67 @@
+# Copyright 2015 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 os
+import unittest
+
+from testing_support import trial_dir
+
+
+class TestTrialDir(unittest.TestCase):
+  def test_simple_workflow(self):
+    self.assertEqual(trial_dir.TrialDir.TRIAL_ROOT, None)
+
+    trial_dir1 = trial_dir.TrialDir('subdir1')
+    trial_dir1.set_up()
+    self.assertIsInstance(trial_dir1.TRIAL_ROOT, basestring)
+    orig_trial_root = trial_dir1.TRIAL_ROOT
+    self.assertTrue(
+      os.path.isdir(os.path.join(trial_dir1.TRIAL_ROOT, 'subdir1')))
+
+    trial_dir2 = trial_dir.TrialDir('subdir2')
+    trial_dir2.set_up()
+    self.assertEqual(trial_dir2.TRIAL_ROOT, orig_trial_root)
+    self.assertTrue(os.path.isdir(trial_dir2.root_dir))
+
+    trial_dir2.tear_down()
+    self.assertTrue(os.path.isdir(trial_dir1.root_dir))
+    self.assertFalse(
+      os.path.isdir(os.path.join(trial_dir2.TRIAL_ROOT, 'subdir2')))
+
+    trial_dir1.tear_down()
+    self.assertFalse(
+      os.path.isdir(os.path.join(trial_dir1.TRIAL_ROOT, 'subdir1')))
+
+    # Not supposed to be called directly, but we're testing.
+    trial_dir1._clean()
+    self.assertFalse(os.path.isdir(orig_trial_root))
+
+
+class TestTrialDirMixIn(unittest.TestCase, trial_dir.TrialDirMixIn):
+  def setUp(self):
+    trial_dir.TrialDirMixIn.setUp(self)
+    self.mixin_root_dir = self.root_dir
+
+  def test_mixin(self):
+    self.assertTrue(os.path.isdir(self.root_dir))
+
+  def tearDown(self):
+    trial_dir.TrialDirMixIn.tearDown(self)
+    self.assertIsNone(self.root_dir)
+    self.assertFalse(os.path.isdir(self.mixin_root_dir))
+
+
+class TestTrialDirTestCase(trial_dir.TestCase):
+  def setUp(self):
+    trial_dir.TestCase.setUp(self)
+    self.mixin_root_dir = self.root_dir
+
+  def test_root_dir(self):
+    self.assertTrue(os.path.isdir(self.root_dir))
+    # Only testing TrialDir here, auto_stub is tested elsewhere.
+
+  def tearDown(self):
+    trial_dir.TestCase.tearDown(self)
+    self.assertIsNone(self.root_dir)
+    self.assertFalse(os.path.isdir(self.mixin_root_dir))