Add more tests to arc_navigation_throttle.cc

chrome/browser/chromeos/arc/arc_navigation_throttle.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_ARC_ARC_NAVIGATION_THROTTLE_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_ARC_NAVIGATION_THROTTLE_H_
 
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "components/arc/intent_helper/activity_icon_loader.h"
 #include "content/public/browser/navigation_throttle.h"
+#include "mojo/public/cpp/bindings/array.h"
 #include "ui/gfx/image/image.h"
 
 class GURL;
 
 namespace content {
 class NavigationHandle;
 class WebContents;
 }  // namespace content
 
 namespace arc {
@@ skipping 31 matching lines @@
       content::WebContents* web_contents,
       const std::vector<AppInfo>& app_info,
       const base::Callback<void(std::string, CloseReason)>& cb)>;
   ArcNavigationThrottle(content::NavigationHandle* navigation_handle,
                         const ShowIntentPickerCallback& show_intent_picker_cb);
   ~ArcNavigationThrottle() override;
 
   static bool ShouldOverrideUrlLoadingForTesting(const GURL& previous_url,
                                                  const GURL& current_url);
 
+  // Finds |selected_app_package| from the |handlers| array and returns the
+  // index. If the app is not found, returns |handlers.size()|.
+  static size_t GetAppIndex(
+      const mojo::Array<mojom::IntentHandlerInfoPtr>& handlers,
+      const std::string& selected_app_package);
+
+  static bool IsAppAvailableForTesting(
+      const mojo::Array<mojom::IntentHandlerInfoPtr>& handlers);
+  static size_t FindPreferredAppForTesting(
+      const mojo::Array<mojom::IntentHandlerInfoPtr>& handlers);
+  static bool IsSwapElementsNeededForTesting(
+      const mojo::Array<mojom::IntentHandlerInfoPtr>& handlers,
+      std::pair<size_t, size_t>* out_indices);
+
  private:
   // content::Navigation implementation:
   NavigationThrottle::ThrottleCheckResult WillStartRequest() override;
   NavigationThrottle::ThrottleCheckResult WillRedirectRequest() override;
 
   NavigationThrottle::ThrottleCheckResult HandleRequest();
   void OnAppCandidatesReceived(
       mojo::Array<mojom::IntentHandlerInfoPtr> handlers);
   void OnAppIconsReceived(
       mojo::Array<mojom::IntentHandlerInfoPtr> handlers,
@@ skipping 14 matching lines @@
 
   // This has to be the last member of the class.
   base::WeakPtrFactory<ArcNavigationThrottle> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcNavigationThrottle);
 };
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_NAVIGATION_THROTTLE_H_