PyAuto test for renderer crash reporting

- Add a helper class (ExistingPathReplacer) to temporarily back up a path while pyauto uses it, and then reinstate it. Used by crash reporter test

- Increase PyAuto's default logging level to INFO

Review URL: http://codereview.chromium.org/3083028

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@56906 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 87 insertions, 0 deletions

diff --git a/chrome/test/pyautolib/pyauto_utils_test.py b/chrome/test/pyautolib/pyauto_utils_test.py
new file mode 100644
index 0000000..f612ba7
--- /dev/null
+++ b/chrome/test/pyautolib/pyauto_utils_test.py
@@ -0,0 +1,87 @@
+#!/usr/bin/python
+
+# Copyright (c) 2010 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.
+
+"""Tests for pyauto_utils."""
+
+import glob
+import os
+import shutil
+import tempfile
+import unittest
+
+import pyauto_utils
+
+
+class ExistingPathReplacerTest(unittest.TestCase):
+  """Tests for ExistingPathReplacer."""
+
+  def setUp(self):
+    self._workdir = tempfile.mkdtemp()
+    self.assertEqual(0, len(os.listdir(self._workdir)))
+
+  def tearDown(self):
+    shutil.rmtree(self._workdir, ignore_errors=True)
+
+  def _CreateFile(self, path):
+    fp = open(path, 'w')
+    fp.write('magic')
+    fp.close()
+
+  def _IsOrigFile(self, path):
+    if not os.path.isfile(path):
+      return False
+    return open(path).read() == 'magic'
+
+  def testNonExistingFile(self):
+    """Test when the requested file does not exist."""
+    myfile = os.path.join(self._workdir, 'myfile.txt')
+    self.assertFalse(os.path.isfile(myfile))
+    r = pyauto_utils.ExistingPathReplacer(myfile, path_type='file')
+    self.assertTrue(os.path.isfile(myfile))
+    del r
+    self.assertEqual(0, len(os.listdir(self._workdir)))
+
+  def testExistingFile(self):
+    """Test when the requested file exists."""
+    myfile = os.path.join(self._workdir, 'myfile.txt')
+    self._CreateFile(myfile)
+    self.assertTrue(self._IsOrigFile(myfile))
+    r = pyauto_utils.ExistingPathReplacer(myfile, path_type='file')
+    self.assertFalse(self._IsOrigFile(myfile))
+    self.assertEqual(2, len(os.listdir(self._workdir)))
+    del r
+    self.assertEqual(1, len(os.listdir(self._workdir)))
+    self.assertTrue(self._IsOrigFile(myfile))
+
+  def testNonExistingDir(self):
+    """Test when the requested dir does not exist."""
+    mydir = os.path.join(self._workdir, 'mydir')
+    self.assertFalse(os.path.isdir(mydir))
+    r = pyauto_utils.ExistingPathReplacer(mydir, path_type='dir')
+    self.assertTrue(os.path.isdir(mydir))
+    self.assertEqual(0, len(os.listdir(mydir)))
+    del r
+    self.assertFalse(os.path.isdir(mydir))
+
+  def testExistingDir(self):
+    """Test when the requested dir exists."""
+    # Create a dir with one file
+    mydir = os.path.join(self._workdir, 'mydir')
+    os.makedirs(mydir)
+    self.assertEqual(1, len(os.listdir(self._workdir)))
+    myfile = os.path.join(mydir, 'myfile.txt')
+    open(myfile, 'w').close()
+    self.assertTrue(os.path.isfile(myfile))
+    r = pyauto_utils.ExistingPathReplacer(mydir)
+    self.assertEqual(2, len(os.listdir(self._workdir)))
+    self.assertFalse(os.path.isfile(myfile))
+    del r
+    self.assertEqual(1, len(os.listdir(self._workdir)))
+    self.assertTrue(os.path.isfile(myfile))
+
+
+if __name__ == '__main__':
+  unittest.main()