content/test/gpu/gpu_tests/webgl_robustness.py

   1 # Copyright 2013 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4 from telemetry import test
   5 from telemetry.page import page
   6 from telemetry.page import page_set
   7 from telemetry.page import page_test
   8 # pylint: disable=W0401,W0614
   9 from telemetry.page.actions.all_page_actions import *
  10
  11 from webgl_conformance import WebglConformanceValidator
  12 from webgl_conformance import conformance_harness_script
  13 from webgl_conformance import conformance_path
  14
  15
  16 robustness_harness_script = conformance_harness_script + r"""
  17   var robustnessTestHarness = {};
  18   robustnessTestHarness._contextLost = false;
  19   robustnessTestHarness.initialize = function() {
  20     var canvas = document.getElementById('example');
  21     canvas.addEventListener('webglcontextlost', function() {
  22       robustnessTestHarness._contextLost = true;
  23     });
  24   }
  25   robustnessTestHarness.runTestLoop = function() {
  26     // Run the test in a loop until the context is lost.
  27     main();
  28     if (!robustnessTestHarness._contextLost)
  29       window.requestAnimationFrame(robustnessTestHarness.runTestLoop);
  30     else
  31       robustnessTestHarness.notifyFinished();
  32   }
  33   robustnessTestHarness.notifyFinished = function() {
  34     // The test may fail in unpredictable ways depending on when the context is
  35     // lost. We ignore such errors and only require that the browser doesn't
  36     // crash.
  37     webglTestHarness._allTestSucceeded = true;
  38     // Notify test completion after a delay to make sure the browser is able to
  39     // recover from the lost context.
  40     setTimeout(webglTestHarness.notifyFinished, 3000);
  41   }
  42
  43   window.confirm = function() {
  44     robustnessTestHarness.initialize();
  45     robustnessTestHarness.runTestLoop();
  46     return false;
  47   }
  48   window.webglRobustnessTestHarness = robustnessTestHarness;
  49 """
  50
  51 class WebglRobustnessPage(page.Page):
  52   def __init__(self, page_set, base_dir):
  53     super(WebglRobustnessPage, self).__init__(
  54       url='file://extra/lots-of-polys-example.html',
  55       page_set=page_set,
  56       base_dir=base_dir)
  57     self.script_to_evaluate_on_commit = robustness_harness_script
  58
  59   def RunNavigateSteps(self, action_runner):
  60     action_runner.NavigateToPage(self)
  61     action_runner.RunAction(
  62       WaitAction({'javascript': 'webglTestHarness._finished'}))
  63
  64 class WebglRobustness(test.Test):
  65   test = WebglConformanceValidator
  66
  67   def CreatePageSet(self, options):
  68     ps = page_set.PageSet(
  69       file_path=conformance_path,
  70       user_agent_type='desktop',
  71       serving_dirs=[''])
  72     ps.AddPage(WebglRobustnessPage(ps, ps.base_dir))
  73     return ps