components/mus/server_view_drawn_tracker_unittest.cc

   1 // Copyright 2015 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 #include "components/mus/server_view_drawn_tracker.h"
   6
   7 #include "components/mus/server_view.h"
   8 #include "components/mus/server_view_drawn_tracker_observer.h"
   9 #include "components/mus/test_server_view_delegate.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 namespace view_manager {
  13 namespace {
  14
  15 class TestServerViewDrawnTrackerObserver
  16     : public ServerViewDrawnTrackerObserver {
  17  public:
  18   TestServerViewDrawnTrackerObserver()
  19       : change_count_(0u),
  20         ancestor_(nullptr),
  21         view_(nullptr),
  22         is_drawn_(false) {}
  23
  24   void clear_change_count() { change_count_ = 0u; }
  25   size_t change_count() const { return change_count_; }
  26   const ServerView* ancestor() const { return ancestor_; }
  27   const ServerView* view() const { return view_; }
  28   bool is_drawn() const { return is_drawn_; }
  29
  30  private:
  31   // ServerViewDrawnTrackerObserver:
  32   void OnDrawnStateChanged(ServerView* ancestor,
  33                            ServerView* view,
  34                            bool is_drawn) override {
  35     change_count_++;
  36     ancestor_ = ancestor;
  37     view_ = view;
  38     is_drawn_ = is_drawn;
  39   }
  40
  41   size_t change_count_;
  42   const ServerView* ancestor_;
  43   const ServerView* view_;
  44   bool is_drawn_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(TestServerViewDrawnTrackerObserver);
  47 };
  48
  49 }  // namespace
  50
  51 TEST(ServerViewDrawnTrackerTest, ChangeBecauseOfDeletionAndVisibility) {
  52   TestServerViewDelegate server_view_delegate;
  53   scoped_ptr<ServerView> view(new ServerView(&server_view_delegate, ViewId()));
  54   server_view_delegate.set_root_view(view.get());
  55   TestServerViewDrawnTrackerObserver drawn_observer;
  56   ServerViewDrawnTracker tracker(view.get(), &drawn_observer);
  57   view->SetVisible(true);
  58   EXPECT_EQ(1u, drawn_observer.change_count());
  59   EXPECT_EQ(view.get(), drawn_observer.view());
  60   EXPECT_EQ(nullptr, drawn_observer.ancestor());
  61   EXPECT_TRUE(drawn_observer.is_drawn());
  62   drawn_observer.clear_change_count();
  63
  64   view->SetVisible(false);
  65   EXPECT_EQ(1u, drawn_observer.change_count());
  66   EXPECT_EQ(view.get(), drawn_observer.view());
  67   EXPECT_EQ(nullptr, drawn_observer.ancestor());
  68   EXPECT_FALSE(drawn_observer.is_drawn());
  69   drawn_observer.clear_change_count();
  70
  71   view->SetVisible(true);
  72   EXPECT_EQ(1u, drawn_observer.change_count());
  73   EXPECT_EQ(view.get(), drawn_observer.view());
  74   EXPECT_EQ(nullptr, drawn_observer.ancestor());
  75   EXPECT_TRUE(drawn_observer.is_drawn());
  76   drawn_observer.clear_change_count();
  77
  78   view.reset();
  79   EXPECT_EQ(1u, drawn_observer.change_count());
  80   EXPECT_EQ(view.get(), drawn_observer.view());
  81   EXPECT_EQ(nullptr, drawn_observer.ancestor());
  82   EXPECT_FALSE(drawn_observer.is_drawn());
  83 }
  84
  85 TEST(ServerViewDrawnTrackerTest, ChangeBecauseOfRemovingFromRoot) {
  86   TestServerViewDelegate server_view_delegate;
  87   ServerView root(&server_view_delegate, ViewId());
  88   server_view_delegate.set_root_view(&root);
  89   root.SetVisible(true);
  90   ServerView child(&server_view_delegate, ViewId());
  91   child.SetVisible(true);
  92   root.Add(&child);
  93
  94   TestServerViewDrawnTrackerObserver drawn_observer;
  95   ServerViewDrawnTracker tracker(&child, &drawn_observer);
  96   root.Remove(&child);
  97   EXPECT_EQ(1u, drawn_observer.change_count());
  98   EXPECT_EQ(&child, drawn_observer.view());
  99   EXPECT_EQ(&root, drawn_observer.ancestor());
 100   EXPECT_FALSE(drawn_observer.is_drawn());
 101   drawn_observer.clear_change_count();
 102
 103   root.Add(&child);
 104   EXPECT_EQ(1u, drawn_observer.change_count());
 105   EXPECT_EQ(&child, drawn_observer.view());
 106   EXPECT_EQ(nullptr, drawn_observer.ancestor());
 107   EXPECT_TRUE(drawn_observer.is_drawn());
 108 }
 109
 110 TEST(ServerViewDrawnTrackerTest, ChangeBecauseOfRemovingAncestorFromRoot) {
 111   TestServerViewDelegate server_view_delegate;
 112   ServerView root(&server_view_delegate, ViewId());
 113   server_view_delegate.set_root_view(&root);
 114   root.SetVisible(true);
 115   ServerView child(&server_view_delegate, ViewId());
 116   child.SetVisible(true);
 117   root.Add(&child);
 118
 119   ServerView child_child(&server_view_delegate, ViewId());
 120   child_child.SetVisible(true);
 121   child.Add(&child_child);
 122
 123   TestServerViewDrawnTrackerObserver drawn_observer;
 124   ServerViewDrawnTracker tracker(&child_child, &drawn_observer);
 125   root.Remove(&child);
 126   EXPECT_EQ(1u, drawn_observer.change_count());
 127   EXPECT_EQ(&child_child, drawn_observer.view());
 128   EXPECT_EQ(&root, drawn_observer.ancestor());
 129   EXPECT_FALSE(drawn_observer.is_drawn());
 130   drawn_observer.clear_change_count();
 131
 132   root.Add(&child_child);
 133   EXPECT_EQ(1u, drawn_observer.change_count());
 134   EXPECT_EQ(&child_child, drawn_observer.view());
 135   EXPECT_EQ(nullptr, drawn_observer.ancestor());
 136   EXPECT_TRUE(drawn_observer.is_drawn());
 137 }
 138
 139 }  // namespace view_manager