PlzNavigate: Move the navigation logic to NavigatorImpl

content/browser/frame_host/navigator_impl_unittest.cc

Index: content/browser/frame_host/navigator_impl_unittest.cc
diff --git a/content/browser/frame_host/navigator_impl_unittest.cc b/content/browser/frame_host/navigator_impl_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b304ba177af50b2d108ac6c548040bb738d9c5ad
--- /dev/null
+++ b/content/browser/frame_host/navigator_impl_unittest.cc
@@ -0,0 +1,288 @@
+// Copyright 2014 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/histogram_tester.h"
+#include "base/time/time.h"
+#include "content/browser/frame_host/navigation_before_commit_info.h"
+#include "content/browser/frame_host/navigation_controller_impl.h"
+#include "content/browser/frame_host/navigation_entry_impl.h"
+#include "content/browser/frame_host/navigation_request.h"
+#include "content/browser/frame_host/navigation_request_info.h"
+#include "content/browser/frame_host/navigator.h"
+#include "content/browser/frame_host/navigator_impl.h"
+#include "content/browser/frame_host/render_frame_host_manager.h"
+#include "content/browser/site_instance_impl.h"
+#include "content/common/navigation_params.h"
+#include "content/public/common/content_switches.h"
+#include "content/public/common/url_constants.h"
+#include "content/public/common/url_utils.h"
+#include "content/test/test_render_frame_host.h"
+#include "content/test/test_web_contents.h"
+#include "net/base/load_flags.h"
+#include "ui/base/page_transition_types.h"
+
+namespace content {
+
+class NavigatorTest
+    : public RenderViewHostImplTestHarness {
+ public:
+  NavigationRequest* GetNavigationRequestForFrameTreeNode(
+      FrameTreeNode* frame_tree_node) const {
+    NavigatorImpl* navigator =
+        static_cast<NavigatorImpl*>(frame_tree_node->navigator());
+    return navigator->navigation_request_map_.get(
+            frame_tree_node->frame_tree_node_id());
+  }
+
+  void EnableBrowserSideNavigation() {
+    CommandLine::ForCurrentProcess()->AppendSwitch(
+        switches::kEnableBrowserSideNavigation);
+  }
+
+  void SendRequestNavigation(FrameTreeNode* node,
+                             const GURL& url) {
+    SendRequestNavigationWithParameters(
+        node, url, Referrer(), ui::PAGE_TRANSITION_LINK,
+        NavigationController::NO_RELOAD);
+  }
+
+  void SendRequestNavigationWithParameters(
+      FrameTreeNode* node,
+      const GURL& url,
+      const Referrer& referrer,
+      ui::PageTransition transition_type,
+      NavigationController::ReloadType reload_type) {
+    scoped_ptr<NavigationEntryImpl> entry(
+        NavigationEntryImpl::FromNavigationEntry(
+            NavigationController::CreateNavigationEntry(
+                url,
+                referrer,
+                transition_type,
+                false,
+                std::string(),
+                controller().GetBrowserContext())));
+    static_cast<NavigatorImpl*>(node->navigator())->RequestNavigation(
+        node, *entry, reload_type, base::TimeTicks::Now());
+  }
+};
+
+// PlzNavigate: Test that a proper NavigationRequest is created by
+// BeginNavigation.
+// Note that all PlzNavigate methods on the browser side require the use of the
+// flag kEnableBrowserSideNavigation.
+TEST_F(NavigatorTest, BrowserSideNavigationBeginNavigation) {
+  const GURL kUrl1("http://www.google.com/");
+  const GURL kUrl2("http://www.chromium.org/");
+  const GURL kUrl3("http://www.gmail.com/");
+  const int64 kFirstNavRequestID = 1;
+
+  EnableBrowserSideNavigation();
+  contents()->NavigateAndCommit(kUrl1);
+
+  // Add a subframe.
+  TestRenderFrameHost* subframe_rfh = static_cast<TestRenderFrameHost*>(
+      contents()->GetFrameTree()->AddFrame(
+          contents()->GetFrameTree()->root(), 14, "Child"));
+
+  FrameTreeNode* subframe_node = subframe_rfh->frame_tree_node();
+  SendRequestNavigation(subframe_rfh->frame_tree_node(), kUrl2);
+  // Simulate a BeginNavigation IPC on the subframe.
+  subframe_rfh->SendBeginNavigationWithURL(kUrl2);
+  NavigationRequest* subframe_request =
+      GetNavigationRequestForFrameTreeNode(subframe_node);
+  ASSERT_TRUE(subframe_request);
+  EXPECT_EQ(kUrl2, subframe_request->common_params().url);
+  // First party for cookies url should be that of the main frame.
+  EXPECT_EQ(kUrl1, subframe_request->info_for_test()->first_party_for_cookies);
+  EXPECT_FALSE(subframe_request->info_for_test()->is_main_frame);
+  EXPECT_TRUE(subframe_request->info_for_test()->parent_is_main_frame);
+  EXPECT_EQ(kFirstNavRequestID + 1, subframe_request->navigation_request_id());
+
+  FrameTreeNode* main_frame_node =
+      contents()->GetMainFrame()->frame_tree_node();
+  SendRequestNavigation(main_frame_node, kUrl3);
+  // Simulate a BeginNavigation IPC on the main frame.
+  contents()->GetMainFrame()->SendBeginNavigationWithURL(kUrl3);
+  NavigationRequest* main_request =
+      GetNavigationRequestForFrameTreeNode(main_frame_node);
+  ASSERT_TRUE(main_request);
+  EXPECT_EQ(kUrl3, main_request->common_params().url);
+  EXPECT_EQ(kUrl3, main_request->info_for_test()->first_party_for_cookies);
+  EXPECT_TRUE(main_request->info_for_test()->is_main_frame);
+  EXPECT_FALSE(main_request->info_for_test()->parent_is_main_frame);
+  EXPECT_EQ(kFirstNavRequestID + 2, main_request->navigation_request_id());
+}
+
+// PlzNavigate: Test that RequestNavigation creates a NavigationRequest and that
+// RenderFrameHost is not modified when the navigation commits.
+TEST_F(NavigatorTest,
+       BrowserSideNavigationRequestNavigationNoLiveRenderer) {
+  const GURL kUrl("http://www.google.com/");
+
+  EnableBrowserSideNavigation();
+  EXPECT_FALSE(main_test_rfh()->render_view_host()->IsRenderViewLive());
+  FrameTreeNode* node = main_test_rfh()->frame_tree_node();
+  SendRequestNavigation(node, kUrl);
+  NavigationRequest* main_request = GetNavigationRequestForFrameTreeNode(node);
+  // A NavigationRequest should have been generated.
+  EXPECT_TRUE(main_request != NULL);
+  RenderFrameHostImpl* rfh = main_test_rfh();
+
+  // Now commit the same url.
+  NavigationBeforeCommitInfo commit_info;
+  commit_info.navigation_url = kUrl;
+  commit_info.navigation_request_id = main_request->navigation_request_id();
+  node->navigator()->CommitNavigation(node, commit_info);
+  main_request = GetNavigationRequestForFrameTreeNode(node);
+
+  // The main RFH should not have been changed, and the renderer should have
+  // been initialized.
+  EXPECT_EQ(rfh, main_test_rfh());
+  EXPECT_TRUE(main_test_rfh()->IsRenderFrameLive());
+  EXPECT_TRUE(main_test_rfh()->render_view_host()->IsRenderViewLive());
+}
+
+// PlzNavigate: Test that a new RenderFrameHost is created when doing a cross
+// site navigation.
+TEST_F(NavigatorTest,
+       BrowserSideNavigationCrossSiteNavigation) {
+  const GURL kUrl1("http://www.chromium.org/");
+  const GURL kUrl2("http://www.google.com/");
+
+  EnableBrowserSideNavigation();
+  contents()->NavigateAndCommit(kUrl1);
+  RenderFrameHostImpl* rfh = main_test_rfh();
+  EXPECT_EQ(RenderFrameHostImpl::STATE_DEFAULT, rfh->rfh_state());
+  FrameTreeNode* node = main_test_rfh()->frame_tree_node();
+
+  // Navigate to a different site.
+  SendRequestNavigation(node, kUrl2);
+  main_test_rfh()->SendBeginNavigationWithURL(kUrl2);
+  NavigationRequest* main_request = GetNavigationRequestForFrameTreeNode(node);
+  ASSERT_TRUE(main_request);
+
+  NavigationBeforeCommitInfo commit_info;
+  commit_info.navigation_url = kUrl2;
+  commit_info.navigation_request_id = main_request->navigation_request_id();
+  node->navigator()->CommitNavigation(node, commit_info);
+  EXPECT_NE(main_test_rfh(), rfh);
+  EXPECT_TRUE(main_test_rfh()->IsRenderFrameLive());
+  EXPECT_TRUE(main_test_rfh()->render_view_host()->IsRenderViewLive());
+}
+
+// PlzNavigate: Test that a navigation commit is ignored if another request has
+// been issued in the meantime.
+// TODO(carlosk): add checks to assert that the cancel call was sent to
+// ResourceDispatcherHost in the IO thread by extending
+// ResourceDispatcherHostDelegate (like in cross_site_transfer_browsertest.cc
+// and plugin_browsertest.cc).
+TEST_F(NavigatorTest,
+       BrowserSideNavigationIgnoreStaleNavigationCommit) {
+  const GURL kUrl0("http://www.wikipedia.org/");
+  const GURL kUrl0_site = SiteInstance::GetSiteForURL(browser_context(), kUrl0);
+  const GURL kUrl1("http://www.chromium.org/");
+  const GURL kUrl2("http://www.google.com/");
+  const GURL kUrl2_site = SiteInstance::GetSiteForURL(browser_context(), kUrl2);
+
+  // Initialization.
+  contents()->NavigateAndCommit(kUrl0);
+  FrameTreeNode* node = main_test_rfh()->frame_tree_node();
+  EnableBrowserSideNavigation();
+  EXPECT_EQ(kUrl0_site, main_test_rfh()->GetSiteInstance()->GetSiteURL());
+
+  // Request navigation to the 1st URL and gather data.
+  SendRequestNavigation(node, kUrl1);
+  main_test_rfh()->SendBeginNavigationWithURL(kUrl1);
+  NavigationRequest* request1 = GetNavigationRequestForFrameTreeNode(node);
+  ASSERT_TRUE(request1);
+  int64 request_id1 = request1->navigation_request_id();
+
+  // Request navigation to the 2nd URL and gather more data.
+  SendRequestNavigation(node, kUrl2);
+  main_test_rfh()->SendBeginNavigationWithURL(kUrl2);
+  NavigationRequest* request2 = GetNavigationRequestForFrameTreeNode(node);
+  ASSERT_TRUE(request2);
+  int64 request_id2 = request2->navigation_request_id();
+  EXPECT_NE(request_id1, request_id2);
+
+  // Confirms that a stale commit is ignored by the Navigator.
+  NavigationBeforeCommitInfo nbc_info;
+  nbc_info.navigation_url = kUrl1;
+  nbc_info.navigation_request_id = request_id1;
+  node->navigator()->CommitNavigation(node, nbc_info);
+  EXPECT_FALSE(node->render_manager()->pending_frame_host());
+  EXPECT_EQ(kUrl0_site, main_test_rfh()->GetSiteInstance()->GetSiteURL());
+
+  // Confirms that a valid, request-matching commit is correctly processed.
+  nbc_info.navigation_url = kUrl2;
+  nbc_info.navigation_request_id = request_id2;
+  node->navigator()->CommitNavigation(node, nbc_info);
+  RenderFrameHostImpl* pending_rfh =
+      node->render_manager()->pending_frame_host();
+  ASSERT_TRUE(pending_rfh);
+  EXPECT_EQ(kUrl2_site, pending_rfh->GetSiteInstance()->GetSiteURL());
+}
+
+// PlzNavigate: Tests that the navigation histograms are correctly tracked both
+// when PlzNavigate is enabled and disabled, and also ignores in-tab renderer
+// initiated navigation for the non-enabled case.
+// Note: the related histogram, Navigation.TimeToURLJobStart, cannot be tracked
+// by this test as the IO thread is not running.
+TEST_F(NavigatorTest, BrowserSideNavigationHistogramTest) {
+  const GURL kUrl0("http://www.google.com/");
+  const GURL kUrl1("http://www.chromium.org/");
+  base::HistogramTester histo_tester;
+
+  // Performs a "normal" non-PlzNavigate navigation
+  contents()->NavigateAndCommit(kUrl0);
+  histo_tester.ExpectTotalCount("Navigation.TimeToCommit", 1);
+
+  // Performs an in-tab renderer initiated navigation
+  int32 new_page_id = 1 + contents()->GetMaxPageIDForSiteInstance(
+      main_test_rfh()->GetSiteInstance());
+  main_test_rfh()->SendNavigate(new_page_id, kUrl0);
+  histo_tester.ExpectTotalCount("Navigation.TimeToCommit", 1);
+
+  // Performs a PlzNavigate navigation
+  EnableBrowserSideNavigation();
+  contents()->NavigateAndCommit(kUrl1);
+  histo_tester.ExpectTotalCount("Navigation.TimeToCommit", 2);
+}
+
+// PlzNavigate: Test that a reload navigation is properly signaled to the
+// renderer when the navigation can commit.
+TEST_F(NavigatorTest, BrowserSideNavigationReload) {
+  const GURL kUrl("http://www.google.com/");
+  contents()->NavigateAndCommit(kUrl);
+
+  EnableBrowserSideNavigation();
+  FrameTreeNode* node = main_test_rfh()->frame_tree_node();
+  SendRequestNavigationWithParameters(
+      node, kUrl, Referrer(), ui::PAGE_TRANSITION_LINK,
+      NavigationController::RELOAD);
+  contents()->GetMainFrame()->SendBeginNavigationWithURL(kUrl);
+  // A NavigationRequest should have been generated.
+  NavigationRequest* main_request =
+      GetNavigationRequestForFrameTreeNode(node);
+  ASSERT_TRUE(main_request != NULL);
+  EXPECT_EQ(FrameMsg_Navigate_Type::RELOAD,
+            main_request->common_params().navigation_type);
+  int page_id = contents()->GetMaxPageIDForSiteInstance(
+                    main_test_rfh()->GetSiteInstance()) + 1;
+  main_test_rfh()->SendNavigate(page_id, kUrl);
+
+  // Now do a shift+reload.
+  SendRequestNavigationWithParameters(
+      node, kUrl, Referrer(), ui::PAGE_TRANSITION_LINK,
+      NavigationController::RELOAD_IGNORING_CACHE);
+  contents()->GetMainFrame()->SendBeginNavigationWithURL(kUrl);
+  // A NavigationRequest should have been generated.
+  main_request = GetNavigationRequestForFrameTreeNode(node);
+  ASSERT_TRUE(main_request != NULL);
+  EXPECT_EQ(FrameMsg_Navigate_Type::RELOAD_IGNORING_CACHE,
+            main_request->common_params().navigation_type);
+}
+
+}  // namespace content