Add DriverBugWorkaroundsInGpuProcessPage to gpu_process_test.py

content/test/gpu/gpu_tests/driver_bug_workarounds.py

+# Copyright 2015 The Chromium Authors. All rights reserved.

[Ken Russell (switch to Gerrit), 2015/11/21 01:06:30]

Does this new test fail, as it should, when the fix in this CL is removed?

What about if the fix from http://crbug.com/553524 is removed (leaving the fix
in this CL present)?

We need to make sure this test actually has value before moving forward with it.

Also, have you checked to see whether this could be folded into either the
gpu_process.py or hardware_accelerated_feature.py tests? It's painful to add a
new top-level test right now, unfortunately. See context_lost.py or pixel.py for
examples of tests which do very different things in different tests (different
command lines, different validation, etc.).

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+from gpu_tests import gpu_test_base
+import gpu_tests.driver_bug_workarounds_expectations as hw_expectations
+
+from telemetry.page import page_test
+from telemetry.story import story_set as story_set_module
+
+test_harness_script = r"""
+  function VerifyDriverBugWorkarounds(workaround) {
+    var list = document.querySelector('.workarounds-list');
+    for (var i=0; i < list.childElementCount; i++) {
+      var workaround_str = list.children[i].textContent;
+      if (workaround_str == workaround) {
+        return true;
+      }
+    }
+    return false;
+  };
+"""
+
+class DriverBugWorkaroundsValidator(gpu_test_base.ValidatorBase):
+  def __init__(self):
+    super(DriverBugWorkaroundsValidator, self).__init__()
+    self.workaround = "use_fake_gpu_driver_workaround"
+
+  def ValidateAndMeasurePage(self, page, tab, results):
+    if not tab.EvaluateJavaScript('VerifyDriverBugWorkarounds("%s")'
+        % self.workaround):
+      print 'Test failed. Printing page contents:'
+      print tab.EvaluateJavaScript('document.body.innerHTML')
+      raise page_test.Failure('fake driver workaround not enabled')
+
+  def CustomizeBrowserOptions(self, options):
+    options.AppendExtraBrowserArgs(['--' + self.workaround])
+
+class ChromeGpuPage(gpu_test_base.PageBase):
+  def __init__(self, story_set, expectations):
+    super(ChromeGpuPage, self).__init__(
+      url='chrome://gpu', page_set=story_set, base_dir=story_set.base_dir,
+      name=('DriverBugWorkarounds'),
+      expectations=expectations)
+    self.script_to_evaluate_on_commit = test_harness_script
+
+class DriverBugWorkarounds(gpu_test_base.TestBase):
+  """Test fake driver workaround is enabled"""
+  test = DriverBugWorkaroundsValidator
+
+  @classmethod
+  def Name(cls):
+    return 'driver_bug_workarounds'
+
+  def _CreateExpectations(self):
+    return hw_expectations.DriverBugWorkaroundsExpectations()
+
+  def CreateStorySet(self, options):
+    ps = story_set_module.StorySet()
+    ps.AddStory(ChromeGpuPage(story_set=ps,
+                expectations=self.GetExpectations()))
+
+    return ps