In rebaseline-cl: add option to only rebaseline tests changed in the CL.

third_party/WebKit/Tools/Scripts/webkitpy/common/webkit_finder_unittest.py

+# Copyright 2016 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
+
+from webkitpy.common.webkit_finder import WebKitFinder
+from webkitpy.common.system.filesystem_mock import MockFileSystem
+
+
+class TestWebKitFinder(unittest.TestCase):
+
+    # TODO(qyearsley): Add tests for other methods in WebKitFinder.
+    # Including tests for cases when the separator character is backslash.
+
+    def test_layout_test_name(self):
+        finder = WebKitFinder(MockFileSystem())
+        self.assertEqual(
+            finder.layout_test_name('third_party/WebKit/LayoutTests/test/name.html'),
+            'test/name.html')
+
+    def test_layout_test_name_not_in_layout_tests_dir(self):
+        finder = WebKitFinder(MockFileSystem())
+        self.assertIsNone(finder.layout_test_name('some/other/path/file.html'))
+
+    def test_webkit_base(self):
+        finder = WebKitFinder(MockFileSystem())
+        self.assertEqual(finder.webkit_base(), '/mock-checkout/third_party/WebKit')
+
+    def test_chromium_base(self):
+        finder = WebKitFinder(MockFileSystem())
+        self.assertEqual(finder.chromium_base(), '/mock-checkout')
+
+    def test_path_from_chromium_base(self):
+        finder = WebKitFinder(MockFileSystem())
+        self.assertEqual(
+            finder.path_from_chromium_base('foo', 'bar.baz'),
+            '/mock-checkout/foo/bar.baz')