PlzNavigate: Add first version of NavigationURLLoader.

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
index 9b88291bae08c2946be0d9b880fadfd5dd8167ba..451c35f5ce861c3068cfd8c100294d517722b160 100644
--- a/content/browser/frame_host/navigator_impl_unittest.cc
+++ b/content/browser/frame_host/navigator_impl_unittest.cc
@@ -13,6 +13,8 @@
 #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/loader/navigation_url_loader.h"
+#include "content/browser/loader/navigation_url_loader_factory.h"
 #include "content/browser/site_instance_impl.h"
 #include "content/common/navigation_params.h"
 #include "content/public/browser/stream_handle.h"
@@ -23,6 +25,7 @@
 #include "content/test/test_web_contents.h"
 #include "net/base/load_flags.h"
 #include "net/http/http_response_headers.h"
+#include "net/url_request/redirect_info.h"
 #include "ui/base/page_transition_types.h"
 
 namespace content {
@@ -48,11 +51,88 @@ class TestStreamHandle : public StreamHandle {
   DISALLOW_COPY_AND_ASSIGN(TestStreamHandle);
 };
 
+class TestNavigationURLLoader : public NavigationURLLoader {
+ public:
+  TestNavigationURLLoader(const CommonNavigationParams& common_params,
+                          scoped_ptr<NavigationRequestInfo> request_info,
+                          NavigationURLLoader::Delegate* delegate)
+      : common_params_(common_params),
+        request_info_(request_info.Pass()),
+        delegate_(delegate) {
+  }
+
+  virtual ~TestNavigationURLLoader() {
+    // Record the number of times a loader was canceled before ResponseStarted
+    // or RequestFailed was returned.
+    if (delegate_)
+      cancel_count_++;
+  }
+
+  // NavigationURLLoader implementation.
+  virtual void FollowRedirect() override {
+    redirect_count_++;
+  }
+
+  const CommonNavigationParams& common_params() const { return common_params_; }
+  NavigationRequestInfo* request_info() const { return request_info_.get(); }
+
+  void CallOnRequestRedirected(const net::RedirectInfo& redirect_info,
+                               ResourceResponse* response) {
+    delegate_->OnRequestRedirected(redirect_info, response);
+  }
+
+  void CallOnResponseStarted(ResourceResponse* response,
+                             scoped_ptr<StreamHandle> body) {
+    delegate_->OnResponseStarted(response, body.Pass());
+  }
+
+  static int redirect_count() { return redirect_count_; }
+  static int cancel_count() { return cancel_count_; }
+
+ private:
+  static int redirect_count_;
+  static int cancel_count_;
+
+  CommonNavigationParams common_params_;
+  scoped_ptr<NavigationRequestInfo> request_info_;
+  NavigationURLLoader::Delegate* delegate_;
+};
+
+int TestNavigationURLLoader::redirect_count_ = 0;
+int TestNavigationURLLoader::cancel_count_ = 0;
+
+class TestNavigationURLLoaderFactory : public NavigationURLLoaderFactory {
+ public:
+  // NavigationURLLoaderFactory implementation.
+  virtual scoped_ptr<NavigationURLLoader> CreateLoader(
+      BrowserContext* browser_context,
+      int64 frame_tree_node_id,
+      const CommonNavigationParams& common_params,
+      scoped_ptr<NavigationRequestInfo> request_info,
+      ResourceRequestBody* request_body,
+      NavigationURLLoader::Delegate* delegate) override {
+    return scoped_ptr<NavigationURLLoader>(new TestNavigationURLLoader(
+        common_params, request_info.Pass(), delegate));
+  }
+};
+
 }
 
 class NavigatorTest
     : public RenderViewHostImplTestHarness {
  public:
+  virtual void SetUp() override {
+    RenderViewHostImplTestHarness::SetUp();
+    loader_factory_.reset(new TestNavigationURLLoaderFactory);
+    NavigationURLLoader::SetFactoryForTesting(loader_factory_.get());
+  }
+
+  virtual void TearDown() override {
+    NavigationURLLoader::SetFactoryForTesting(nullptr);
+    loader_factory_.reset();
+    RenderViewHostImplTestHarness::TearDown();
+  }
+
   NavigationRequest* GetNavigationRequestForFrameTreeNode(
       FrameTreeNode* frame_tree_node) const {
     NavigatorImpl* navigator =
@@ -61,6 +141,11 @@ class NavigatorTest
             frame_tree_node->frame_tree_node_id());
   }
 
+  TestNavigationURLLoader* GetLoaderForNavigationRequest(
+      NavigationRequest* request) const {
+    return static_cast<TestNavigationURLLoader*>(request->loader_for_testing());
+  }
+
   void EnableBrowserSideNavigation() {
     CommandLine::ForCurrentProcess()->AppendSwitch(
         switches::kEnableBrowserSideNavigation);
@@ -91,6 +176,9 @@ class NavigatorTest
     static_cast<NavigatorImpl*>(node->navigator())->RequestNavigation(
         node, *entry, reload_type, base::TimeTicks::Now());
   }
+
+ private:
+  scoped_ptr<TestNavigationURLLoaderFactory> loader_factory_;
 };
 
 // PlzNavigate: Test that a proper NavigationRequest is created by
@@ -117,12 +205,15 @@ TEST_F(NavigatorTest, BrowserSideNavigationBeginNavigation) {
   // handled already.
   NavigationRequest* subframe_request =
       GetNavigationRequestForFrameTreeNode(subframe_node);
+  TestNavigationURLLoader* subframe_loader =
+      GetLoaderForNavigationRequest(subframe_request);
   ASSERT_TRUE(subframe_request);
   EXPECT_EQ(kUrl2, subframe_request->common_params().url);
+  EXPECT_EQ(kUrl2, subframe_loader->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(kUrl1, subframe_loader->request_info()->first_party_for_cookies);
+  EXPECT_FALSE(subframe_loader->request_info()->is_main_frame);
+  EXPECT_TRUE(subframe_loader->request_info()->parent_is_main_frame);
 
   FrameTreeNode* main_frame_node =
       contents()->GetMainFrame()->frame_tree_node();
@@ -131,11 +222,14 @@ TEST_F(NavigatorTest, BrowserSideNavigationBeginNavigation) {
   contents()->GetMainFrame()->SendBeginNavigationWithURL(kUrl3);
   NavigationRequest* main_request =
       GetNavigationRequestForFrameTreeNode(main_frame_node);
+  TestNavigationURLLoader* main_loader =
+      GetLoaderForNavigationRequest(main_request);
   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(kUrl3, main_loader->common_params().url);
+  EXPECT_EQ(kUrl3, main_loader->request_info()->first_party_for_cookies);
+  EXPECT_TRUE(main_loader->request_info()->is_main_frame);
+  EXPECT_FALSE(main_loader->request_info()->parent_is_main_frame);
 }
 
 // PlzNavigate: Test that RequestNavigation creates a NavigationRequest and that
@@ -152,10 +246,11 @@ TEST_F(NavigatorTest, BrowserSideNavigationRequestNavigationNoLiveRenderer) {
   EXPECT_TRUE(main_request != NULL);
   RenderFrameHostImpl* rfh = main_test_rfh();
 
-  // Now commit the same url.
+  // Now return the response without any redirects. This will cause the
+  // navigation to commit at the same URL.
   scoped_refptr<ResourceResponse> response(new ResourceResponse);
-  node->navigator()->CommitNavigation(
-      node, response.get(), scoped_ptr<StreamHandle>(new TestStreamHandle));
+  GetLoaderForNavigationRequest(main_request)->CallOnResponseStarted(
+      response.get(), scoped_ptr<StreamHandle>(new TestStreamHandle));
   main_request = GetNavigationRequestForFrameTreeNode(node);
 
   // The main RFH should not have been changed, and the renderer should have
@@ -190,8 +285,8 @@ TEST_F(NavigatorTest, BrowserSideNavigationNoContent) {
   const char kNoContentHeaders[] = "HTTP/1.1 204 No Content\0\0";
   response->head.headers = new net::HttpResponseHeaders(
       std::string(kNoContentHeaders, arraysize(kNoContentHeaders)));
-  node->navigator()->CommitNavigation(
-      node, response.get(), scoped_ptr<StreamHandle>(new TestStreamHandle));
+  GetLoaderForNavigationRequest(main_request)->CallOnResponseStarted(
+      response.get(), scoped_ptr<StreamHandle>(new TestStreamHandle));
 
   // There should be no pending RenderFrameHost; the navigation was aborted.
   EXPECT_FALSE(GetNavigationRequestForFrameTreeNode(node));
@@ -210,8 +305,8 @@ TEST_F(NavigatorTest, BrowserSideNavigationNoContent) {
   const char kResetContentHeaders[] = "HTTP/1.1 205 Reset Content\0\0";
   response->head.headers = new net::HttpResponseHeaders(
       std::string(kResetContentHeaders, arraysize(kResetContentHeaders)));
-  node->navigator()->CommitNavigation(
-      node, response.get(), scoped_ptr<StreamHandle>(new TestStreamHandle));
+  GetLoaderForNavigationRequest(main_request)->CallOnResponseStarted(
+      response.get(), scoped_ptr<StreamHandle>(new TestStreamHandle));
 
   // There should be no pending RenderFrameHost; the navigation was aborted.
   EXPECT_FALSE(GetNavigationRequestForFrameTreeNode(node));
@@ -238,8 +333,51 @@ TEST_F(NavigatorTest, BrowserSideNavigationCrossSiteNavigation) {
   ASSERT_TRUE(main_request);
 
   scoped_refptr<ResourceResponse> response(new ResourceResponse);
-  node->navigator()->CommitNavigation(
-      node, response.get(), scoped_ptr<StreamHandle>(new TestStreamHandle));
+  GetLoaderForNavigationRequest(main_request)->CallOnResponseStarted(
+      response.get(), scoped_ptr<StreamHandle>(new TestStreamHandle));
+  RenderFrameHostImpl* pending_rfh =
+      node->render_manager()->pending_frame_host();
+  ASSERT_TRUE(pending_rfh);
+  EXPECT_NE(pending_rfh, rfh);
+  EXPECT_TRUE(pending_rfh->IsRenderFrameLive());
+  EXPECT_TRUE(pending_rfh->render_view_host()->IsRenderViewLive());
+}
+
+// PlzNavigate: Test that redirects are followed.
+TEST_F(NavigatorTest, BrowserSideNavigationRedirectCrossSite) {
+  const GURL kUrl1("http://www.chromium.org/");
+  const GURL kUrl2("http://www.google.com/");
+
+  contents()->NavigateAndCommit(kUrl1);
+  RenderFrameHostImpl* rfh = main_test_rfh();
+  EXPECT_EQ(RenderFrameHostImpl::STATE_DEFAULT, rfh->rfh_state());
+  FrameTreeNode* node = main_test_rfh()->frame_tree_node();
+
+  EnableBrowserSideNavigation();
+
+  // Navigate to a URL on the same site.
+  SendRequestNavigation(node, kUrl1);
+  main_test_rfh()->SendBeginNavigationWithURL(kUrl1);
+  NavigationRequest* main_request = GetNavigationRequestForFrameTreeNode(node);
+  ASSERT_TRUE(main_request);
+
+  // It then redirects to another site.
+  net::RedirectInfo redirect_info;
+  redirect_info.status_code = 302;
+  redirect_info.new_method = "GET";
+  redirect_info.new_url = kUrl2;
+  redirect_info.new_first_party_for_cookies = kUrl2;
+  scoped_refptr<ResourceResponse> response(new ResourceResponse);
+  GetLoaderForNavigationRequest(main_request)->CallOnRequestRedirected(
+      redirect_info, response.get());
+
+  // The redirect should have been followed.
+  EXPECT_EQ(1, TestNavigationURLLoader::redirect_count());
+
+  // Then it commits.
+  response = new ResourceResponse;
+  GetLoaderForNavigationRequest(main_request)->CallOnResponseStarted(
+      response.get(), scoped_ptr<StreamHandle>(new TestStreamHandle));
   RenderFrameHostImpl* pending_rfh =
       node->render_manager()->pending_frame_host();
   ASSERT_TRUE(pending_rfh);
@@ -280,8 +418,8 @@ TEST_F(NavigatorTest, BrowserSideNavigationReplacePendingNavigation) {
 
   // Confirm that the commit corresonds to the new request.
   scoped_refptr<ResourceResponse> response(new ResourceResponse);
-  node->navigator()->CommitNavigation(
-      node, response.get(), scoped_ptr<StreamHandle>(new TestStreamHandle));
+  GetLoaderForNavigationRequest(request2)->CallOnResponseStarted(
+      response.get(), scoped_ptr<StreamHandle>(new TestStreamHandle));
   RenderFrameHostImpl* pending_rfh =
       node->render_manager()->pending_frame_host();
   ASSERT_TRUE(pending_rfh);