utils: ipc: import mojo

Import mojo from the Chromium repository, so that we can use it for
generating code for the IPC mechanism. The commit from which this was
taken is:
a079161ec8c6907b883f9cb84fc8c4e7896cb1d0 "Add PPAPI constructs for
sending focus object to PdfAccessibilityTree"

This tree has been pruned to remove directories that didn't have any
necessary code:
- mojo/* except for mojo/public
  - mojo core, docs, and misc files
- mojo/public/* except for mojo/public/{tools,LICENSE}
  - language bindings for IPC, tests, and some mojo internals
- mojo/public/tools/{fuzzers,chrome_ipc}
- mojo/public/tools/bindings/generators
  - code generation for other languages

No files were modified.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/utils/ipc/mojo/public/tools/mojom/mojom/fileutil_unittest.py b/utils/ipc/mojo/public/tools/mojom/mojom/fileutil_unittest.py
new file mode 100644
index 00000000..ff5753a2
--- /dev/null
+++ b/utils/ipc/mojo/public/tools/mojom/mojom/fileutil_unittest.py
@@ -0,0 +1,40 @@
+# 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 imp
+import os.path
+import shutil
+import sys
+import tempfile
+import unittest
+
+from mojom import fileutil
+
+
+class FileUtilTest(unittest.TestCase):
+  def testEnsureDirectoryExists(self):
+    """Test that EnsureDirectoryExists fuctions correctly."""
+
+    temp_dir = tempfile.mkdtemp()
+    try:
+      self.assertTrue(os.path.exists(temp_dir))
+
+      # Directory does not exist, yet.
+      full = os.path.join(temp_dir, "foo", "bar")
+      self.assertFalse(os.path.exists(full))
+
+      # Create the directory.
+      fileutil.EnsureDirectoryExists(full)
+      self.assertTrue(os.path.exists(full))
+
+      # Trying to create it again does not cause an error.
+      fileutil.EnsureDirectoryExists(full)
+      self.assertTrue(os.path.exists(full))
+
+      # Bypass check for directory existence to tickle error handling that
+      # occurs in response to a race.
+      fileutil.EnsureDirectoryExists(full, always_try_to_create=True)
+      self.assertTrue(os.path.exists(full))
+    finally:
+      shutil.rmtree(temp_dir)