More aggressive IO asserts in content_browsertests.

content/renderer/dom_serializer_browsertest.cc

 // Copyright (c) 2010 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.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/containers/hash_tables.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/threading/thread_restrictions.h"
 #include "build/build_config.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/renderer/render_view.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "content/public/test/content_browser_test.h"
 #include "content/public/test/content_browser_test_utils.h"
 #include "content/public/test/test_utils.h"
 #include "content/renderer/savable_resources.h"
@@ skipping 651 matching lines @@
 }
 
 // Serialize XML document which has all 5 built-in entities. After
 // finishing serialization, the serialized contents should be same
 // with original XML document.
 IN_PROC_BROWSER_TEST_F(DomSerializerTests,
                        SerializeXMLDocWithBuiltInEntities) {
   base::FilePath page_file_path =
       GetTestFilePath("dom_serializer", "note.html");
   base::FilePath xml_file_path = GetTestFilePath("dom_serializer", "note.xml");
-  // Read original contents for later comparison.
+
   std::string original_contents;
-  ASSERT_TRUE(base::ReadFileToString(xml_file_path, &original_contents));
+  {
+    // Read original contents for later comparison.
+    base::ThreadRestrictions::ScopedAllowIO allow_io_for_test_verifications;
+    ASSERT_TRUE(base::ReadFileToString(xml_file_path, &original_contents));
+  }
+
   // Get file URL.
   GURL file_url = net::FilePathToFileURL(page_file_path);
   GURL xml_file_url = net::FilePathToFileURL(xml_file_path);
   ASSERT_TRUE(file_url.SchemeIsFile());
+
   // Load the test file.
   NavigateToURL(shell(), file_url);
 
   PostTaskToInProcessRendererAndWait(
         base::Bind(
             &DomSerializerTests::SerializeXMLDocWithBuiltInEntitiesOnRenderer,
             base::Unretained(this), xml_file_url, original_contents));
 }
 
 // When serializing DOM, we add MOTW declaration before html tag.
 IN_PROC_BROWSER_TEST_F(DomSerializerTests, SerializeHTMLDOMWithAddingMOTW) {
   base::FilePath page_file_path =
       GetTestFilePath("dom_serializer", "youtube_2.htm");
-  // Read original contents for later comparison .
+
   std::string original_contents;
-  ASSERT_TRUE(base::ReadFileToString(page_file_path, &original_contents));
+  {
+    // Read original contents for later comparison .
+    base::ThreadRestrictions::ScopedAllowIO allow_io_for_test_verifications;
+    ASSERT_TRUE(base::ReadFileToString(page_file_path, &original_contents));
+  }
+
   // Get file URL.
   GURL file_url = net::FilePathToFileURL(page_file_path);
   ASSERT_TRUE(file_url.SchemeIsFile());
 
   // Load the test file.
   NavigateToURL(shell(), file_url);
 
   PostTaskToInProcessRendererAndWait(
         base::Bind(
             &DomSerializerTests::SerializeHTMLDOMWithAddingMOTWOnRenderer,
@@ skipping 139 matching lines @@
   NavigateToURL(shell(), file_url);
 
   PostTaskToInProcessRendererAndWait(
         base::Bind(
             &DomSerializerTests::
                 SubResourceForElementsInNonHTMLNamespaceOnRenderer,
             base::Unretained(this), file_url));
 }
 
 }  // namespace content