[HBD] Intercept navigation to Flash download page

chrome/browser/plugins/flash_download_interception_unittest.cc

+// Copyright 2016 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/plugins/flash_download_interception.h"
+
+#include "base/test/scoped_feature_list.h"
+#include "chrome/common/chrome_features.h"
+#include "chrome/test/base/chrome_render_view_host_test_harness.h"
+#include "content/public/browser/navigation_handle.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
+
+using content::NavigationHandle;
+using content::NavigationThrottle;
+
+class FlashDownloadInterceptionTest : public ChromeRenderViewHostTestHarness {
+ public:
+  FlashDownloadInterceptionTest() {}
+
+  void SetUp() override {
+    ChromeRenderViewHostTestHarness::SetUp();
+    flash_navigation_handle_ =
+        NavigationHandle::CreateNavigationHandleForTesting(
+            GURL("https://get.adobe.com/flashplayer"), main_rfh());
+    flash_slash_navigation_handle_ =
+        NavigationHandle::CreateNavigationHandleForTesting(
+            GURL("https://get.adobe.com/flashplayer/"), main_rfh());

[Lei Zhang, 2016/09/01 21:08:11]

Maybe also try:

http://get.adobe.com/flashplayer
http://example.com/get.adobe.com/flashplayer

[trizzofo, 2016/09/01 21:30:28]

Done.

+    example_navigation_handle_ =
+        NavigationHandle::CreateNavigationHandleForTesting(
+            GURL("https://www.example.com"), main_rfh());
+  }
+
+  void TearDown() override {
+    flash_navigation_handle_.reset();
+    flash_slash_navigation_handle_.reset();
+    example_navigation_handle_.reset();
+    ChromeRenderViewHostTestHarness::TearDown();
+  }
+
+ protected:
+  std::unique_ptr<NavigationHandle> flash_navigation_handle_;
+  std::unique_ptr<NavigationHandle> flash_slash_navigation_handle_;

[Lei Zhang, 2016/09/01 21:08:11]

Can the two that are only used in a single test be local variables instead?

[trizzofo, 2016/09/01 21:30:28]

Done.

+  std::unique_ptr<NavigationHandle> example_navigation_handle_;
+};
+
+TEST_F(FlashDownloadInterceptionTest, PreferHtmlOverPluginsOff) {
+  base::test::ScopedFeatureList feature_list;
+  feature_list.InitAndDisableFeature(features::kPreferHtmlOverPlugins);
+
+  flash_navigation_handle_->CallWillStartRequestForTesting(
+      true, content::Referrer(), true, ui::PAGE_TRANSITION_LINK, false);
+  std::unique_ptr<NavigationThrottle> throttle =
+      FlashDownloadInterception::MaybeCreateThrottleFor(
+          flash_navigation_handle_.get());
+  EXPECT_EQ(nullptr, throttle);
+}
+
+TEST_F(FlashDownloadInterceptionTest, PreferHtmlOverPluginsOn) {
+  std::unique_ptr<NavigationThrottle> throttle;
+  base::test::ScopedFeatureList feature_list;
+  feature_list.InitAndEnableFeature(features::kPreferHtmlOverPlugins);
+
+  flash_navigation_handle_->CallWillStartRequestForTesting(
+      true, content::Referrer(), false, ui::PAGE_TRANSITION_LINK, false);
+  throttle = FlashDownloadInterception::MaybeCreateThrottleFor(
+      flash_navigation_handle_.get());
+  EXPECT_EQ(nullptr, throttle);
+
+  flash_navigation_handle_->CallWillStartRequestForTesting(
+      true, content::Referrer(), true, ui::PAGE_TRANSITION_LINK, false);
+  throttle = FlashDownloadInterception::MaybeCreateThrottleFor(
+      flash_navigation_handle_.get());
+  EXPECT_NE(nullptr, throttle);
+  ASSERT_EQ(NavigationThrottle::CANCEL_AND_IGNORE,
+            throttle->WillStartRequest());
+
+  flash_slash_navigation_handle_->CallWillStartRequestForTesting(
+      true, content::Referrer(), true, ui::PAGE_TRANSITION_LINK, false);
+  throttle = FlashDownloadInterception::MaybeCreateThrottleFor(
+      flash_navigation_handle_.get());
+  EXPECT_NE(nullptr, throttle);
+  ASSERT_EQ(NavigationThrottle::CANCEL_AND_IGNORE,
+            throttle->WillStartRequest());
+
+  example_navigation_handle_->CallWillStartRequestForTesting(
+      true, content::Referrer(), true, ui::PAGE_TRANSITION_LINK, false);
+  throttle = FlashDownloadInterception::MaybeCreateThrottleFor(
+      example_navigation_handle_.get());
+  EXPECT_EQ(nullptr, throttle);
+}