mojo: Add isolate test for python bindings test

R=yzshen@chromium.org

Review URL: https://codereview.chromium.org/571373002

Cr-Commit-Position: refs/heads/master@{#295093}

mojo/mojo.gyp

@@ -624,5 +624,24 @@
         },
       ],
     }],
+    ['component!="shared_library" and OS=="linux" and test_isolation_mode!="noop"', {
+      'targets': [
+        {
+          'target_name': 'mojo_python_unittests_run',
+          'type': 'none',
+          'dependencies': [
+            'mojo_python',
+            'mojo_base.gyp:mojo_public_test_interfaces',
+          ],
+          'includes': [
+            '../build/isolate.gypi',
+            'mojo_python_unittests.isolate',
+          ],
+          'sources': [
+            'mojo_python_unittests.isolate',
+          ],
+        },
+      ],
+    }],
   ],
 }

mojo/mojo_python_unittests.isolate

+# Copyright 2014 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.
+{
+  'conditions': [
+    ['OS=="linux"', {
+      'variables': {
+        'command': [
+          'tools/run_mojo_python_bindings_tests.py',
+          '--build-dir=<(PRODUCT_DIR)',
+        ],
+        'isolate_dependency_tracked': [
+          'tools/pylib/mojo_python_tests_runner.py',
+          'tools/run_mojo_python_bindings_tests.py',
+        ],
+        'isolate_dependency_untracked': [
+          'python/tests/',
+          '<(PRODUCT_DIR)/gen/mojo/public/interfaces/bindings/tests/',
+          '<(PRODUCT_DIR)/python/',
+        ],
+      },
+    }],
+  ],
+}

mojo/tools/pylib/mojo_python_tests_runner.py

@@ -51,7 +51,7 @@ class MojoPythonTestRunner(object):
     loader = unittest.loader.TestLoader()
     print "Running Python unit tests under %s..." % self._test_dir
 
-    pylib_dir = os.path.join(chromium_src_dir, self._test_dir)
+    pylib_dir = os.path.abspath(os.path.join(chromium_src_dir, self._test_dir))
     if args.tests:
       if pylib_dir not in sys.path:
         sys.path.append(pylib_dir)