Reland of Wake Lock API implementation (Chromium part)

content/browser/wake_lock/wake_lock_browsertest.cc

Index: content/browser/wake_lock/wake_lock_browsertest.cc
diff --git a/content/browser/wake_lock/wake_lock_browsertest.cc b/content/browser/wake_lock/wake_lock_browsertest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6e7d2d9dee8d4373dec9e0956ccca667c090dadf
--- /dev/null
+++ b/content/browser/wake_lock/wake_lock_browsertest.cc
@@ -0,0 +1,376 @@
+// Copyright 2015 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 "base/command_line.h"
+#include "base/test/test_timeouts.h"
+#include "content/browser/wake_lock/wake_lock_service_context.h"
+#include "content/browser/web_contents/web_contents_impl.h"
+#include "content/public/common/content_switches.h"
+#include "content/public/test/browser_test_utils.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/shell/browser/shell.h"
+#include "content/test/content_browser_test_utils_internal.h"
+#include "net/dns/mock_host_resolver.h"
+#include "net/test/embedded_test_server/embedded_test_server.h"
+
+namespace content {
+
+namespace {
+
+const char kBlinkWakeLockFeature[] = "WakeLock";
+
+}  // namespace
+
+class WakeLockTest : public ContentBrowserTest {
+ public:
+  void SetUpCommandLine(base::CommandLine* command_line) override {
+    command_line->AppendSwitchASCII(switches::kEnableBlinkFeatures,
+                                    kBlinkWakeLockFeature);
+    command_line->AppendSwitch(switches::kSitePerProcess);
+  }
+
+  void SetUpOnMainThread() override {
+    host_resolver()->AddRule("*", "127.0.0.1");
+    EXPECT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
+    // To prevent occlusion events from changing page visibility.
+    GetWebContents()->IncrementCapturerCount(gfx::Size());
+  }
+
+  void TearDownOnMainThread() override {
+    GetWebContents()->DecrementCapturerCount();
+  }
+
+ protected:
+  WebContents* GetWebContents() { return shell()->web_contents(); }
+
+  WebContentsImpl* GetWebContentsImpl() {
+    return static_cast<WebContentsImpl*>(GetWebContents());
+  }
+
+  RenderFrameHost* GetMainFrame() { return GetWebContents()->GetMainFrame(); }
+
+  FrameTreeNode* GetNestedFrameNode() {
+    FrameTreeNode* root = GetWebContentsImpl()->GetFrameTree()->root();
+    CHECK_EQ(1U, root->child_count());
+    return root->child_at(0);
+  }
+
+  RenderFrameHost* GetNestedFrame() {
+    return GetNestedFrameNode()->current_frame_host();
+  }
+
+  WakeLockServiceContext* GetWakeLockServiceContext() {
+    return GetWebContentsImpl()->GetWakeLockServiceContext();
+  }
+
+  bool HasWakeLock() {
+    return GetWakeLockServiceContext()->HasWakeLockForTests();
+  }
+
+  void WaitForPossibleUpdate() {
+    // As Mojo channels have no common FIFO order in respect to each other and
+    // to the Chromium IPC, we cannot assume that when screen.keepAwake state
+    // is changed from within a script, WakeLockService will receive an update
+    // request before ExecuteScript() returns. Therefore, some time slack is
+    // needed to make sure that WakeLockService has received any possible update
+    // requests before checking the resulting wake lock state.
+    base::PlatformThread::Sleep(TestTimeouts::tiny_timeout());
+    RunAllPendingInMessageLoop();
+  }
+
+  void ScreenWakeLockInMainFrame() {
+    EXPECT_TRUE(ExecuteScript(GetMainFrame(), "screen.keepAwake = true;"));
+    WaitForPossibleUpdate();
+    EXPECT_TRUE(HasWakeLock());
+  }
+
+  bool EvaluateAsBool(const ToRenderFrameHost& adapter,
+                      const std::string& expr) {
+    bool result;
+    CHECK(ExecuteScriptAndExtractBool(
+        adapter, "window.domAutomationController.send(" + expr + ");",
+        &result));
+    return result;
+  }
+};
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, WakeLockApiIsPresent) {
+  NavigateToURL(shell(), embedded_test_server()->GetURL("/simple_page.html"));
+  EXPECT_TRUE(
+      EvaluateAsBool(GetMainFrame(), "typeof screen.keepAwake !== undefined"));
+}
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, LockAndUnlockScreenInMainFrame) {
+  NavigateToURL(shell(), embedded_test_server()->GetURL("/simple_page.html"));
+
+  // Should not have screen wake lock initially.
+  EXPECT_FALSE(HasWakeLock());
+
+  // Check attribute 'screen.keepAwake' in main frame.
+  EXPECT_FALSE(EvaluateAsBool(GetMainFrame(), "screen.keepAwake"));
+
+  // Set keep awake flag in main frame.
+  EXPECT_TRUE(ExecuteScript(GetMainFrame(), "screen.keepAwake = true;"));
+  WaitForPossibleUpdate();
+
+  // Keep awake flag should be set in main frame.
+  EXPECT_TRUE(EvaluateAsBool(GetMainFrame(), "screen.keepAwake"));
+
+  // Should create screen wake lock.
+  EXPECT_TRUE(HasWakeLock());
+
+  // Reset keep awake flag in main frame.
+  EXPECT_TRUE(ExecuteScript(GetMainFrame(), "screen.keepAwake = false;"));
+  WaitForPossibleUpdate();
+
+  // Keep awake flag should not be set in main frame.
+  EXPECT_FALSE(EvaluateAsBool(GetMainFrame(), "screen.keepAwake"));
+
+  // Should release screen wake lock.
+  EXPECT_FALSE(HasWakeLock());
+}
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, MultipleLockThenUnlock) {
+  NavigateToURL(shell(), embedded_test_server()->GetURL("/simple_page.html"));
+
+  // Set keep awake flag.
+  EXPECT_TRUE(ExecuteScript(GetMainFrame(), "screen.keepAwake = true;"));
+  WaitForPossibleUpdate();
+
+  // Set keep awake flag again.
+  EXPECT_TRUE(ExecuteScript(GetMainFrame(), "screen.keepAwake = true;"));
+  WaitForPossibleUpdate();
+
+  // Screen should still be locked.
+  EXPECT_TRUE(HasWakeLock());
+
+  // Reset keep awake flag.
+  EXPECT_TRUE(ExecuteScript(GetMainFrame(), "screen.keepAwake = false;"));
+  WaitForPossibleUpdate();
+
+  // Should release screen wake lock.
+  EXPECT_FALSE(HasWakeLock());
+}
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, LockInMainFrameAndNestedFrame) {
+  NavigateToURL(shell(),
+                embedded_test_server()->GetURL("/frame_tree/2-4.html"));
+  EXPECT_FALSE(HasWakeLock());
+
+  // Lock screen in nested frame.
+  EXPECT_TRUE(ExecuteScript(GetNestedFrame(), "screen.keepAwake = true;"));
+  WaitForPossibleUpdate();
+
+  // Should create screen wake lock.
+  EXPECT_TRUE(HasWakeLock());
+
+  // screen.keepAwake should be false in the main frame.
+  EXPECT_FALSE(EvaluateAsBool(GetMainFrame(), "screen.keepAwake"));
+
+  // Lock screen in main frame.
+  EXPECT_TRUE(ExecuteScript(GetMainFrame(), "screen.keepAwake = true;"));
+  WaitForPossibleUpdate();
+
+  // screen.keepAwake should be true in the main frame.
+  EXPECT_TRUE(EvaluateAsBool(GetMainFrame(), "screen.keepAwake"));
+
+  // Screen wake lock should not change.
+  EXPECT_TRUE(HasWakeLock());
+
+  // Unlock screen in nested frame.
+  EXPECT_TRUE(ExecuteScript(GetNestedFrame(), "screen.keepAwake = false;"));
+  WaitForPossibleUpdate();
+
+  // Screen wake lock should be present, as the main frame is still requesting
+  // it.
+  EXPECT_TRUE(HasWakeLock());
+
+  // Unlock screen in main frame.
+  EXPECT_TRUE(ExecuteScript(GetMainFrame(), "screen.keepAwake = false;"));
+  WaitForPossibleUpdate();
+
+  // Screen wake lock should be released, as no frames are requesting it.
+  EXPECT_FALSE(HasWakeLock());
+}
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, FrameRemoved) {
+  NavigateToURL(shell(),
+                embedded_test_server()->GetURL("/frame_tree/2-4.html"));
+  EXPECT_FALSE(HasWakeLock());
+
+  // Lock screen in nested frame.
+  EXPECT_TRUE(ExecuteScript(GetNestedFrame(), "screen.keepAwake = true;"));
+  WaitForPossibleUpdate();
+
+  EXPECT_TRUE(HasWakeLock());
+
+  // Remove nested frame.
+  EXPECT_TRUE(ExecuteScript(GetMainFrame(),
+                            "var iframe = document.getElementById('3-1-id');"
+                            "iframe.parentNode.removeChild(iframe);"));
+
+  // Screen wake lock should be released.
+  EXPECT_FALSE(HasWakeLock());
+}
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, UnlockAfterTabCrashed) {
+  NavigateToURL(shell(), embedded_test_server()->GetURL("/simple_page.html"));
+  ScreenWakeLockInMainFrame();
+
+  // Crash the tab.
+  CrashTab(GetWebContents());
+
+  // Screen wake lock should be released.
+  EXPECT_FALSE(HasWakeLock());
+}
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, UnlockAfterNavigation) {
+  NavigateToURL(shell(), embedded_test_server()->GetURL("/simple_page.html"));
+  ScreenWakeLockInMainFrame();
+
+  // Navigate to a different document.
+  NavigateToURL(shell(), embedded_test_server()->GetURL("/title1.html"));
+
+  // Screen wake lock should be released after navigation.
+  EXPECT_FALSE(HasWakeLock());
+}
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, UnlockAfterNavigationToSelf) {
+  NavigateToURL(shell(), embedded_test_server()->GetURL("/simple_page.html"));
+  ScreenWakeLockInMainFrame();
+
+  // Navigate to the same document.
+  NavigateToURL(shell(), embedded_test_server()->GetURL("/simple_page.html"));
+
+  // Screen wake lock should be released after navigation to the same URL.
+  EXPECT_FALSE(HasWakeLock());
+}
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, KeepLockAfterInPageNavigation) {
+  GURL test_url(
+      embedded_test_server()->GetURL("/session_history/fragment.html"));
+  GURL test_in_page_url(test_url.spec() + "#a");
+
+  NavigateToURL(shell(), test_url);
+  ScreenWakeLockInMainFrame();
+
+  NavigateToURL(shell(), test_in_page_url);
+  EXPECT_TRUE(HasWakeLock());
+}
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, UnlockAfterReload) {
+  NavigateToURL(shell(), embedded_test_server()->GetURL("/simple_page.html"));
+  ScreenWakeLockInMainFrame();
+
+  shell()->Reload();
+  WaitForLoadStop(GetWebContents());
+
+  // Screen wake lock should be released after reload.
+  EXPECT_FALSE(HasWakeLock());
+}
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, BrowserInitiatedFrameNavigation) {
+  NavigateToURL(shell(),
+                embedded_test_server()->GetURL("/frame_tree/2-4.html"));
+
+  EXPECT_FALSE(HasWakeLock());
+
+  // Lock screen in nested frame.
+  EXPECT_TRUE(ExecuteScript(GetNestedFrame(), "screen.keepAwake = true;"));
+  WaitForPossibleUpdate();
+
+  // Screen wake lock should be present.
+  EXPECT_TRUE(HasWakeLock());
+
+  // Navigate the nested frame (browser-initiated).
+  NavigateFrameToURL(GetNestedFrameNode(),
+                     embedded_test_server()->GetURL("/simple_page.html"));
+  WaitForPossibleUpdate();
+
+  // Screen wake lock should be released.
+  EXPECT_FALSE(HasWakeLock());
+}
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, RendererInitiatedFrameNavigation) {
+  NavigateToURL(shell(),
+                embedded_test_server()->GetURL("/frame_tree/2-4.html"));
+
+  EXPECT_FALSE(HasWakeLock());
+
+  // Lock screen in nested frame.
+  EXPECT_TRUE(ExecuteScript(GetNestedFrame(), "screen.keepAwake = true;"));
+  WaitForPossibleUpdate();
+
+  // Screen wake lock should be present.
+  EXPECT_TRUE(HasWakeLock());
+
+  // Navigate the nested frame (renderer-initiated).
+  NavigateIframeToURL(GetWebContents(), "3-1-id",
+                      embedded_test_server()->GetURL("/simple_page.html"));
+  WaitForPossibleUpdate();
+
+  // Screen wake lock should be released.
+  EXPECT_FALSE(HasWakeLock());
+}
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, OutOfProcessFrame) {
+  NavigateToURL(shell(), embedded_test_server()->GetURL(
+                             "a.com", "/cross_site_iframe_factory.html?a(a)"));
+  EXPECT_FALSE(HasWakeLock());
+
+  // Ensure that the nested frame is same-process.
+  EXPECT_FALSE(GetNestedFrame()->IsCrossProcessSubframe());
+
+  // Lock screen in same-site nested frame.
+  EXPECT_TRUE(ExecuteScript(GetNestedFrame(), "screen.keepAwake = true;"));
+  WaitForPossibleUpdate();
+  EXPECT_TRUE(HasWakeLock());
+
+  // Navigate nested frame to a cross-site document.
+  NavigateFrameToURL(GetNestedFrameNode(), embedded_test_server()->GetURL(
+                                               "b.com", "/simple_page.html"));
+  WaitForPossibleUpdate();
+
+  // Ensure that a new process has been created for the nested frame.
+  EXPECT_TRUE(GetNestedFrame()->IsCrossProcessSubframe());
+
+  // Screen wake lock should be released.
+  EXPECT_FALSE(HasWakeLock());
+
+  // Lock screen in the cross-site nested frame.
+  EXPECT_TRUE(ExecuteScript(GetNestedFrame(), "screen.keepAwake = true;"));
+  WaitForPossibleUpdate();
+
+  // Screen wake lock should be created.
+  EXPECT_TRUE(HasWakeLock());
+}
+
+IN_PROC_BROWSER_TEST_F(WakeLockTest, UnlockAfterCrashOutOfProcessFrame) {
+  // Load a page with cross-site iframe.
+  NavigateToURL(shell(), embedded_test_server()->GetURL(
+                             "a.com", "/cross_site_iframe_factory.html?a(b)"));
+  EXPECT_FALSE(HasWakeLock());
+
+  // Ensure that a new process has been created for the nested frame.
+  EXPECT_TRUE(GetNestedFrame()->IsCrossProcessSubframe());
+
+  // Lock screen in cross-site nested frame.
+  EXPECT_TRUE(ExecuteScript(GetNestedFrame(), "screen.keepAwake = true;"));
+  WaitForPossibleUpdate();
+  EXPECT_TRUE(HasWakeLock());
+
+  // Crash process that owns the out-of-process frame.
+  RenderProcessHostWatcher watcher(
+      GetNestedFrame()->GetProcess(),
+      RenderProcessHostWatcher::WATCH_FOR_PROCESS_EXIT);
+  GetNestedFrame()->GetProcess()->Shutdown(0, false);
+  watcher.Wait();
+
+  // Screen wake lock should be released.
+  EXPECT_FALSE(HasWakeLock());
+}
+
+}  // namespace content