Add target base_unittests_run and tools/isolate/isolate.py.

tools/isolate/isolate_test.py

Index: tools/isolate/isolate_test.py
diff --git a/tools/isolate/isolate_test.py b/tools/isolate/isolate_test.py
new file mode 100755
index 0000000000000000000000000000000000000000..eb44d5341fdd1748899e36d15868aae437fade5c
--- /dev/null
+++ b/tools/isolate/isolate_test.py
@@ -0,0 +1,91 @@
+#!/usr/bin/env python
+# Copyright (c) 2012 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 shutil
+import subprocess
+import sys
+import tempfile
+import unittest
+
+ROOT_DIR = os.path.dirname(os.path.abspath(__file__))
+
+
+class Isolate(unittest.TestCase):
+  def setUp(self):
+    self.tempdir = tempfile.mkdtemp()
+    self.result = os.path.join(self.tempdir, 'result')
+
+  def tearDown(self):
+    shutil.rmtree(self.tempdir)
+
+  def _execute(self, args):
+    cmd = [
+        sys.executable, os.path.join(ROOT_DIR, 'isolate.py'),
+        '--root', ROOT_DIR,
+        '--result', self.result,
+    ]
+    subprocess.check_call(
+        cmd + args,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.STDOUT)
+
+  def test_check(self):
+    cmd = [
+        '--mode', 'check',
+        'isolate_test.py',
+    ]
+    self._execute(cmd)
+    self.assertTrue(os.path.isfile(self.result))
+
+  def test_check_non_existant(self):
+    cmd = [
+        '--mode', 'check',
+        'NonExistentFile',
+    ]
+    try:
+      self._execute(cmd)
+      self.fail()
+    except subprocess.CalledProcessError:
+      pass
+    self.assertFalse(os.path.isfile(self.result))
+
+  def test_run(self):
+    cmd = [
+        '--mode', 'run',
+        'isolate_test.py',
+        '--',
+        sys.executable, 'isolate_test.py', '--ok',
+    ]
+    self._execute(cmd)
+    self.assertTrue(os.path.isfile(self.result))
+
+  def test_run_fail(self):
+    cmd = [
+        '--mode', 'run',
+        'isolate_test.py',
+        '--',
+        sys.executable, 'isolate_test.py', '--fail',
+    ]
+    try:
+      self._execute(cmd)
+      self.fail()
+    except subprocess.CalledProcessError:
+      pass
+    self.assertFalse(os.path.isfile(self.result))
+
+
+def main():
+  if len(sys.argv) == 1:
+    unittest.main()
+  if sys.argv[1] == '--ok':
+    return 0
+  if sys.argv[1] == '--fail':
+    return 1
+  unittest.main()
+
+
+if __name__ == '__main__':
+  sys.exit(main())