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