content/test/web_contents_observer_sanity_checker.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_TEST_WEB_CONTENTS_OBSERVER_SANITY_CHECKER_H_
   6 #define CONTENT_TEST_WEB_CONTENTS_OBSERVER_SANITY_CHECKER_H_
   7
   8 #include <set>
   9 #include <string>
  10
  11 #include "base/supports_user_data.h"
  12 #include "content/public/browser/web_contents_observer.h"
  13
  14 namespace content {
  15
  16 // If your test framework enables a ContentBrowserSanityChecker, this sanity
  17 // check is automatically installed on all WebContentses during your test.
  18 //
  19 // WebContentsObserverSanityChecker is a WebContentsObserver that sanity-checks
  20 // the sequence of observer calls, and CHECK()s if they are inconsistent. These
  21 // checks are test-only code designed to find bugs in the implementation of the
  22 // content layer by validating the contract between WebContents and its
  23 // observers.
  24 //
  25 // For example, WebContentsObserver::RenderFrameCreated announces the existence
  26 // of a new RenderFrameHost, so that method call must occur before the
  27 // RenderFrameHost is referenced by some other WebContentsObserver method.
  28 class WebContentsObserverSanityChecker : public WebContentsObserver,
  29                                          public base::SupportsUserData::Data {
  30  public:
  31   // Enables these checks on |web_contents|. Usually ContentBrowserSanityChecker
  32   // should call this for you.
  33   static void Enable(WebContents* web_contents);
  34
  35   // WebContentsObserver implementation.
  36   void RenderFrameCreated(RenderFrameHost* render_frame_host) override;
  37   void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
  38   void RenderFrameForInterstitialPageCreated(
  39       RenderFrameHost* render_frame_host) override;
  40   void RenderFrameHostChanged(RenderFrameHost* old_host,
  41                               RenderFrameHost* new_host) override;
  42   void FrameDeleted(RenderFrameHost* render_frame_host) override;
  43   void DidStartProvisionalLoadForFrame(RenderFrameHost* render_frame_host,
  44                                        const GURL& validated_url,
  45                                        bool is_error_page,
  46                                        bool is_iframe_srcdoc) override;
  47   void DidCommitProvisionalLoadForFrame(
  48       RenderFrameHost* render_frame_host,
  49       const GURL& url,
  50       ui::PageTransition transition_type) override;
  51   void DidFailProvisionalLoad(RenderFrameHost* render_frame_host,
  52                               const GURL& validated_url,
  53                               int error_code,
  54                               const base::string16& error_description,
  55                               bool was_ignored_by_handler) override;
  56   void DidNavigateMainFrame(const LoadCommittedDetails& details,
  57                             const FrameNavigateParams& params) override;
  58   void DidNavigateAnyFrame(RenderFrameHost* render_frame_host,
  59                            const LoadCommittedDetails& details,
  60                            const FrameNavigateParams& params) override;
  61   void DocumentAvailableInMainFrame() override;
  62   void DocumentOnLoadCompletedInMainFrame() override;
  63   void DocumentLoadedInFrame(RenderFrameHost* render_frame_host) override;
  64   void DidFinishLoad(RenderFrameHost* render_frame_host,
  65                      const GURL& validated_url) override;
  66   void DidFailLoad(RenderFrameHost* render_frame_host,
  67                    const GURL& validated_url,
  68                    int error_code,
  69                    const base::string16& error_description,
  70                    bool was_ignored_by_handler) override;
  71   void DidGetRedirectForResourceRequest(
  72       RenderFrameHost* render_frame_host,
  73       const ResourceRedirectDetails& details) override;
  74   void DidOpenRequestedURL(WebContents* new_contents,
  75                            RenderFrameHost* source_render_frame_host,
  76                            const GURL& url,
  77                            const Referrer& referrer,
  78                            WindowOpenDisposition disposition,
  79                            ui::PageTransition transition) override;
  80   bool OnMessageReceived(const IPC::Message& message,
  81                          RenderFrameHost* render_frame_host) override;
  82   void WebContentsDestroyed() override;
  83
  84  private:
  85   explicit WebContentsObserverSanityChecker(WebContents* web_contents);
  86   ~WebContentsObserverSanityChecker() override;
  87
  88   std::string Format(RenderFrameHost* render_frame_host);
  89   void AssertRenderFrameExists(RenderFrameHost* render_frame_host);
  90   void AssertMainFrameExists();
  91
  92   std::set<std::pair<int, int>> current_hosts_;
  93   std::set<std::pair<int, int>> live_routes_;
  94   std::set<std::pair<int, int>> deleted_routes_;
  95
  96   bool web_contents_destroyed_;
  97
  98   DISALLOW_COPY_AND_ASSIGN(WebContentsObserverSanityChecker);
  99 };
 100
 101 }  // namespace content
 102
 103 #endif  // CONTENT_TEST_WEB_CONTENTS_OBSERVER_SANITY_CHECKER_H_