(Reland) Port WebGL extension availability tests to the integration test harness.

content/test/gpu/gpu_tests/webgl_conformance_integration_test.py

Index: content/test/gpu/gpu_tests/webgl_conformance_integration_test.py
diff --git a/content/test/gpu/gpu_tests/webgl_conformance_integration_test.py b/content/test/gpu/gpu_tests/webgl_conformance_integration_test.py
index 500e000f4c27859b230dfd2f56f393b331f56dc4..303ea2a16682a91a5ee0a0083bf93d420eb916a2 100644
--- a/content/test/gpu/gpu_tests/webgl_conformance_integration_test.py
+++ b/content/test/gpu/gpu_tests/webgl_conformance_integration_test.py
@@ -2,11 +2,34 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import os
+
 from gpu_tests import gpu_integration_test
+from gpu_tests import path_util
 from gpu_tests import webgl_conformance
 from gpu_tests import webgl_conformance_expectations
 from gpu_tests import webgl2_conformance_expectations
 
+conformance_relcomps = (
+  'third_party', 'webgl', 'src', 'sdk', 'tests')
+
+extensions_relcomps = (
+    'content', 'test', 'data', 'gpu')
+
+conformance_relpath = os.path.join(*conformance_relcomps)
+extensions_relpath = os.path.join(*extensions_relcomps)
+
+# These URL prefixes are needed because having more than one static
+# server dir is causing the base server directory to be moved up the
+# directory hierarchy.
+url_prefixes_to_trim = [
+  '/'.join(conformance_relcomps) + '/',
+  '/'.join(extensions_relcomps) + '/'
+]
+
+extension_harness_additional_script = r"""
+  window.onload = function() { window._loaded = true; }
+"""
 
 class WebGLConformanceIntegrationTest(gpu_integration_test.GpuIntegrationTest):
 
@@ -27,6 +50,9 @@ class WebGLConformanceIntegrationTest(gpu_integration_test.GpuIntegrationTest):
 
   @classmethod
   def GenerateGpuTests(cls, options):
+    #
+    # Conformance tests
+    #
     test_paths = webgl_conformance.WebglConformance._ParseTests(
         '00_test_list.txt',
         options.webgl_conformance_version,
@@ -38,17 +64,128 @@ class WebGLConformanceIntegrationTest(gpu_integration_test.GpuIntegrationTest):
       # generated test name cannot contain '.'
       name = webgl_conformance.GenerateTestNameFromTestPath(test_path).replace(
           '.', '_')
-      yield (name, test_path, ())
+      yield (name,
+             os.path.join(conformance_relpath, test_path),
+             ('_RunConformanceTest'))
+
+    #
+    # Extension tests
+    #
+    extension_tests = cls._GetExtensionList()
+    # Coverage test.
+    yield('WebglExtension_TestCoverage',
+          os.path.join(extensions_relpath, 'webgl_extension_test.html'),
+          ('_RunExtensionCoverageTest',
+           extension_tests,
+           cls._webgl_version))
+    # Individual extension tests.
+    for extension in extension_tests:
+      yield('WebglExtension_%s' % extension,
+            os.path.join(extensions_relpath, 'webgl_extension_test.html'),
+            ('_RunExtensionTest',
+             extension,
+             cls._webgl_version))
+
+  @classmethod
+  def _GetExtensionList(cls):
+    if cls._webgl_version == 1:
+      return [
+        'ANGLE_instanced_arrays',
+        'EXT_blend_minmax',
+        'EXT_disjoint_timer_query',
+        'EXT_frag_depth',
+        'EXT_shader_texture_lod',
+        'EXT_sRGB',
+        'EXT_texture_filter_anisotropic',
+        'OES_element_index_uint',
+        'OES_standard_derivatives',
+        'OES_texture_float',
+        'OES_texture_float_linear',
+        'OES_texture_half_float',
+        'OES_texture_half_float_linear',
+        'OES_vertex_array_object',
+        'WEBGL_compressed_texture_astc',
+        'WEBGL_compressed_texture_atc',
+        'WEBGL_compressed_texture_etc1',
+        'WEBGL_compressed_texture_pvrtc',
+        'WEBGL_compressed_texture_s3tc',
+        'WEBGL_compressed_texture_s3tc_srgb',
+        'WEBGL_debug_renderer_info',
+        'WEBGL_debug_shaders',
+        'WEBGL_depth_texture',
+        'WEBGL_draw_buffers',
+        'WEBGL_lose_context',
+      ]
+    else:
+      return [
+        'EXT_color_buffer_float',
+        'EXT_disjoint_timer_query',
+        'EXT_texture_filter_anisotropic',
+        'OES_texture_float_linear',
+        'WEBGL_compressed_texture_astc',
+        'WEBGL_compressed_texture_atc',
+        'WEBGL_compressed_texture_es3_0',
+        'WEBGL_compressed_texture_etc1',
+        'WEBGL_compressed_texture_pvrtc',
+        'WEBGL_compressed_texture_s3tc',
+        'WEBGL_compressed_texture_s3tc_srgb',
+        'WEBGL_debug_renderer_info',
+        'WEBGL_debug_shaders',
+        'WEBGL_lose_context',
+      ]
 
   def RunActualGpuTest(self, test_path, *args):
+    # This indirection allows these tests to trampoline through
+    # _RunGpuTest.
+    test_name = args[0]
+    getattr(self, test_name)(test_path, *args[1:])
+
+  def _NavigateTo(self, test_path, harness_script):
     url = self.UrlOfStaticFilePath(test_path)
-    harness_script = webgl_conformance.conformance_harness_script
     self.tab.Navigate(url, script_to_evaluate_on_commit=harness_script)
+
+  def _CheckTestCompletion(self):
     self.tab.action_runner.WaitForJavaScriptCondition(
         'webglTestHarness._finished', timeout_in_seconds=300)
     if not webgl_conformance._DidWebGLTestSucceed(self.tab):
       self.fail(webgl_conformance._WebGLTestMessages(self.tab))
 
+  def _RunConformanceTest(self, test_path, *args):
+    self._NavigateTo(test_path, webgl_conformance.conformance_harness_script)
+    self._CheckTestCompletion()
+
+
+  def _GetExtensionHarnessScript(self):
+    return (webgl_conformance.conformance_harness_script +
+            extension_harness_additional_script)
+
+  def _RunExtensionCoverageTest(self, test_path, *args):
+    self._NavigateTo(test_path, self._GetExtensionHarnessScript())
+    self.tab.action_runner.WaitForJavaScriptCondition(
+        'window._loaded', timeout_in_seconds=300)
+    extension_list = args[0]
+    webgl_version = args[1]
+    context_type = "webgl2" if webgl_version == 2 else "webgl"
+    extension_list_string = "["
+    for extension in extension_list:
+      extension_list_string = extension_list_string + extension + ", "
+    extension_list_string = extension_list_string + "]"
+    self.tab.action_runner.EvaluateJavaScript(
+      'checkSupportedExtensions("%s", "%s")' % (
+        extension_list_string, context_type))
+    self._CheckTestCompletion()
+
+  def _RunExtensionTest(self, test_path, *args):
+    self._NavigateTo(test_path, self._GetExtensionHarnessScript())
+    self.tab.action_runner.WaitForJavaScriptCondition(
+        'window._loaded', timeout_in_seconds=300)
+    extension = args[0]
+    webgl_version = args[1]
+    context_type = "webgl2" if webgl_version == 2 else "webgl"
+    self.tab.action_runner.EvaluateJavaScript(
+      'checkExtension("%s", "%s")' % (extension, context_type))
+    self._CheckTestCompletion()
+
   @classmethod
   def CustomizeOptions(cls):
     assert cls._webgl_version == 1 or cls._webgl_version == 2
@@ -64,10 +201,10 @@ class WebGLConformanceIntegrationTest(gpu_integration_test.GpuIntegrationTest):
     assert cls._webgl_version == 1 or cls._webgl_version == 2
     if cls._webgl_version == 1:
       return webgl_conformance_expectations.WebGLConformanceExpectations(
-          webgl_conformance.conformance_path)
+          webgl_conformance.conformance_path, url_prefixes=url_prefixes_to_trim)
     else:
       return webgl2_conformance_expectations.WebGL2ConformanceExpectations(
-          webgl_conformance.conformance_path)
+          webgl_conformance.conformance_path, url_prefixes=url_prefixes_to_trim)
 
   @classmethod
   def setUpClass(cls):
@@ -75,4 +212,9 @@ class WebGLConformanceIntegrationTest(gpu_integration_test.GpuIntegrationTest):
     cls.CustomizeOptions()
     cls.SetBrowserOptions(cls._finder_options)
     cls.StartBrowser()
-    cls.SetStaticServerDirs([webgl_conformance.conformance_path])
+    # By setting multiple server directories, the root of the server
+    # implicitly becomes the common base directory, i.e., the Chromium
+    # src dir, and all URLs have to be specified relative to that.
+    cls.SetStaticServerDirs([
+      os.path.join(path_util.GetChromiumSrcDir(), conformance_relpath),
+      os.path.join(path_util.GetChromiumSrcDir(), extensions_relpath)])