Fix Resource Priorities and Scheduling (Chrome Side)

chrome/browser/chrome_content_browser_client_unittest.cc

 // Copyright 2013 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 "chrome/browser/chrome_content_browser_client.h"
 
 #include <map>
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
@@ skipping 134 matching lines @@
   MaybeCopyDisableWebRtcEncryptionSwitch(version_info::Channel::STABLE);
   EXPECT_FALSE(to_command_line_.HasSwitch(switches::kDisableWebRtcEncryption));
 }
 
 #endif  // ENABLE_WEBRTC
 
 class BlinkSettingsFieldTrialTest : public testing::Test {
  public:
   static const char kParserFieldTrialName[];
   static const char kIFrameFieldTrialName[];
+  static const char kResourcePrioritiesFieldTrialName[];
+  static const char kFakeGroupName[];
+  static const char kDefaultGroupName[];
 
   BlinkSettingsFieldTrialTest()
       : trial_list_(NULL),
         command_line_(base::CommandLine::NO_PROGRAM) {}
 
   void SetUp() override {
     command_line_.AppendSwitchASCII(
         switches::kProcessType, switches::kRendererProcess);
   }
 
   void TearDown() override {
     variations::testing::ClearAllVariationParams();
   }
 
-  void CreateFieldTrial(const char* trial_name) {
-    base::FieldTrialList::CreateFieldTrial(trial_name, kGroupName);
+  void CreateFieldTrial(const char* trial_name, const char* group_name) {
+    base::FieldTrialList::CreateFieldTrial(trial_name, group_name);
   }
 
   void CreateFieldTrialWithParams(
       const char* trial_name,
+      const char* group_name,
       const char* key1, const char* value1,
       const char* key2, const char* value2) {
     std::map<std::string, std::string> params;
     params.insert(std::make_pair(key1, value1));
     params.insert(std::make_pair(key2, value2));
-    CreateFieldTrial(trial_name);
-    variations::AssociateVariationParams(trial_name, kGroupName, params);
+    CreateFieldTrial(trial_name, kFakeGroupName);
+    variations::AssociateVariationParams(trial_name, kFakeGroupName, params);
   }
 
   void AppendContentBrowserClientSwitches() {
     client_.AppendExtraCommandLineSwitches(&command_line_, kFakeChildProcessId);
   }
 
   const base::CommandLine& command_line() const {
     return command_line_;
   }
 
   void AppendBlinkSettingsSwitch(const char* value) {
     command_line_.AppendSwitchASCII(switches::kBlinkSettings, value);
   }
 
  private:
   static const int kFakeChildProcessId = 1;
-  static const char kGroupName[];
 
   ChromeContentBrowserClient client_;
   base::FieldTrialList trial_list_;
   base::CommandLine command_line_;
 
   content::TestBrowserThreadBundle thread_bundle_;
 };
 
 const char BlinkSettingsFieldTrialTest::kParserFieldTrialName[] =
     "BackgroundHtmlParserTokenLimits";
 const char BlinkSettingsFieldTrialTest::kIFrameFieldTrialName[] =
     "LowPriorityIFrames";
-const char BlinkSettingsFieldTrialTest::kGroupName[] = "FakeGroup";
+const char BlinkSettingsFieldTrialTest::kResourcePrioritiesFieldTrialName[] =
+    "ResourcePriorities";
+const char BlinkSettingsFieldTrialTest::kFakeGroupName[] = "FakeGroup";
+const char BlinkSettingsFieldTrialTest::kDefaultGroupName[] = "Default";
 
 TEST_F(BlinkSettingsFieldTrialTest, NoFieldTrial) {
   AppendContentBrowserClientSwitches();
   EXPECT_FALSE(command_line().HasSwitch(switches::kBlinkSettings));
 }
 
 TEST_F(BlinkSettingsFieldTrialTest, FieldTrialWithoutParams) {
-  CreateFieldTrial(kParserFieldTrialName);
+  CreateFieldTrial(kParserFieldTrialName, kFakeGroupName);
   AppendContentBrowserClientSwitches();
   EXPECT_FALSE(command_line().HasSwitch(switches::kBlinkSettings));
 }
 
 TEST_F(BlinkSettingsFieldTrialTest, BlinkSettingsSwitchAlreadySpecified) {
   AppendBlinkSettingsSwitch("foo");
-  CreateFieldTrialWithParams(kParserFieldTrialName,
+  CreateFieldTrialWithParams(kParserFieldTrialName, kFakeGroupName,
                              "key1", "value1", "key2", "value2");
   AppendContentBrowserClientSwitches();
   EXPECT_TRUE(command_line().HasSwitch(switches::kBlinkSettings));
   EXPECT_EQ("foo",
             command_line().GetSwitchValueASCII(switches::kBlinkSettings));
 }
 
 TEST_F(BlinkSettingsFieldTrialTest, FieldTrialEnabled) {
-  CreateFieldTrialWithParams(kParserFieldTrialName,
+  CreateFieldTrialWithParams(kParserFieldTrialName, kFakeGroupName,
                              "key1", "value1", "key2", "value2");
   AppendContentBrowserClientSwitches();
   EXPECT_TRUE(command_line().HasSwitch(switches::kBlinkSettings));
   EXPECT_EQ("key1=value1,key2=value2",
             command_line().GetSwitchValueASCII(switches::kBlinkSettings));
 }
 
 TEST_F(BlinkSettingsFieldTrialTest, MultipleFieldTrialsEnabled) {
-  CreateFieldTrialWithParams(kParserFieldTrialName,
+  CreateFieldTrialWithParams(kParserFieldTrialName, kFakeGroupName,
                              "key1", "value1", "key2", "value2");
-  CreateFieldTrialWithParams(kIFrameFieldTrialName,
+  CreateFieldTrialWithParams(kIFrameFieldTrialName, kFakeGroupName,
                              "keyA", "valueA", "keyB", "valueB");
   AppendContentBrowserClientSwitches();
   EXPECT_TRUE(command_line().HasSwitch(switches::kBlinkSettings));
   EXPECT_EQ("key1=value1,key2=value2,keyA=valueA,keyB=valueB",
             command_line().GetSwitchValueASCII(switches::kBlinkSettings));
 }
 
 TEST_F(BlinkSettingsFieldTrialTest, MultipleFieldTrialsDuplicateKeys) {
-  CreateFieldTrialWithParams(kParserFieldTrialName,
+  CreateFieldTrialWithParams(kParserFieldTrialName, kFakeGroupName,
                              "key1", "value1", "key2", "value2");
-  CreateFieldTrialWithParams(kIFrameFieldTrialName,
+  CreateFieldTrialWithParams(kIFrameFieldTrialName, kFakeGroupName,
                              "key2", "duplicate", "key3", "value3");
   AppendContentBrowserClientSwitches();
   EXPECT_TRUE(command_line().HasSwitch(switches::kBlinkSettings));
   EXPECT_EQ("key1=value1,key2=value2,key2=duplicate,key3=value3",
             command_line().GetSwitchValueASCII(switches::kBlinkSettings));
 }
 
+TEST_F(BlinkSettingsFieldTrialTest, ResourcePrioritiesDefault) {
+  CreateFieldTrial(kResourcePrioritiesFieldTrialName, kDefaultGroupName);
+  AppendContentBrowserClientSwitches();
+  EXPECT_FALSE(command_line().HasSwitch(switches::kBlinkSettings));
+}
+
+TEST_F(BlinkSettingsFieldTrialTest, ResourcePrioritiesEverythingEnabled) {
+  CreateFieldTrial(kResourcePrioritiesFieldTrialName,
+                   "Everything_11111_1_1_10");
+  AppendContentBrowserClientSwitches();
+  EXPECT_TRUE(command_line().HasSwitch(switches::kBlinkSettings));
+  EXPECT_EQ("fetchDeferLateScripts=true,"
+            "fetchIncreaseFontPriority=true,"
+            "fetchIncreaseAsyncScriptPriority=true,"
+            "fetchIncreasePriorities=true",
+            command_line().GetSwitchValueASCII(switches::kBlinkSettings));
+}
+
+TEST_F(BlinkSettingsFieldTrialTest, ResourcePrioritiesDeferLateScripts) {
+  CreateFieldTrial(kResourcePrioritiesFieldTrialName,
+                   "LateScripts_10000_0_1_10");
+  AppendContentBrowserClientSwitches();
+  EXPECT_TRUE(command_line().HasSwitch(switches::kBlinkSettings));
+  EXPECT_EQ("fetchDeferLateScripts=true",
+            command_line().GetSwitchValueASCII(switches::kBlinkSettings));
+}
+
+TEST_F(BlinkSettingsFieldTrialTest, ResourcePrioritiesFontsEnabled) {
+  CreateFieldTrial(kResourcePrioritiesFieldTrialName, "FontOnly_01000_0_1_10");
+  AppendContentBrowserClientSwitches();
+  EXPECT_TRUE(command_line().HasSwitch(switches::kBlinkSettings));
+  EXPECT_EQ("fetchIncreaseFontPriority=true",
+            command_line().GetSwitchValueASCII(switches::kBlinkSettings));
+}
+
+TEST_F(BlinkSettingsFieldTrialTest, ResourcePrioritiesIncreaseAsyncScript) {
+  CreateFieldTrial(kResourcePrioritiesFieldTrialName,
+                   "AsyncScript_00100_0_1_10");
+  AppendContentBrowserClientSwitches();
+  EXPECT_TRUE(command_line().HasSwitch(switches::kBlinkSettings));
+  EXPECT_EQ("fetchIncreaseAsyncScriptPriority=true",
+            command_line().GetSwitchValueASCII(switches::kBlinkSettings));
+}
+
+TEST_F(BlinkSettingsFieldTrialTest, ResourcePrioritiesIncreasePriorities) {
+  CreateFieldTrial(kResourcePrioritiesFieldTrialName,
+                   "IncreasePriorities_00010_0_1_10");
+  AppendContentBrowserClientSwitches();
+  EXPECT_TRUE(command_line().HasSwitch(switches::kBlinkSettings));
+  EXPECT_EQ("fetchIncreasePriorities=true",
+            command_line().GetSwitchValueASCII(switches::kBlinkSettings));
+}
+
 }  // namespace chrome
 
 #if !defined(OS_IOS) && !defined(OS_ANDROID)
 namespace content {
 
 class InstantNTPURLRewriteTest : public BrowserWithTestWindowTest {
  protected:
   void SetUp() override {
     BrowserWithTestWindowTest::SetUp();
     field_trial_list_.reset(new base::FieldTrialList(
@@ skipping 32 matching lines @@
 
   NavigationEntry* entry = browser()->tab_strip_model()->
       GetActiveWebContents()->GetController().GetLastCommittedEntry();
   ASSERT_TRUE(entry != NULL);
   EXPECT_EQ(url_rewritten, entry->GetURL());
   EXPECT_EQ(url_original, entry->GetVirtualURL());
 }
 
 }  // namespace content
 #endif  // !defined(OS_IOS) && !defined(OS_ANDROID)