1 // Copyright (c) 2012 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 "chrome/browser/command_updater.h"
6
7 #include "base/compiler_specific.h"
8 #include "chrome/browser/command_observer.h"
9 #include "chrome/browser/command_updater_delegate.h"
10 #include "testing/gtest/include/gtest/gtest.h"
11
12 class FakeCommandUpdaterDelegate : public CommandUpdaterDelegate {
13 public:
ExecuteCommandWithDisposition(int id,WindowOpenDisposition)14 virtual void ExecuteCommandWithDisposition(int id,
15 WindowOpenDisposition) OVERRIDE {
16 EXPECT_EQ(1, id);
17 }
18 };
19
20 class FakeCommandObserver : public CommandObserver {
21 public:
FakeCommandObserver()22 FakeCommandObserver() : enabled_(true) {}
23
EnabledStateChangedForCommand(int id,bool enabled)24 virtual void EnabledStateChangedForCommand(int id, bool enabled) OVERRIDE {
25 enabled_ = enabled;
26 }
27
enabled() const28 bool enabled() const { return enabled_; }
29
30 private:
31 bool enabled_;
32 };
33
TEST(CommandUpdaterTest,TestBasicAPI)34 TEST(CommandUpdaterTest, TestBasicAPI) {
35 FakeCommandUpdaterDelegate delegate;
36 CommandUpdater command_updater(&delegate);
37
38 // Unsupported command
39 EXPECT_FALSE(command_updater.SupportsCommand(0));
40 EXPECT_FALSE(command_updater.IsCommandEnabled(0));
41 // FakeCommandUpdaterDelegate::ExecuteCommand should not be called, since
42 // the command is not supported.
43 command_updater.ExecuteCommand(0);
44
45 // Supported, enabled command
46 command_updater.UpdateCommandEnabled(1, true);
47 EXPECT_TRUE(command_updater.SupportsCommand(1));
48 EXPECT_TRUE(command_updater.IsCommandEnabled(1));
49 command_updater.ExecuteCommand(1);
50
51 // Supported, disabled command
52 command_updater.UpdateCommandEnabled(2, false);
53 EXPECT_TRUE(command_updater.SupportsCommand(2));
54 EXPECT_FALSE(command_updater.IsCommandEnabled(2));
55 // FakeCommandUpdaterDelegate::ExecuteCommmand should not be called, since
56 // the command_updater is disabled
57 command_updater.ExecuteCommand(2);
58 }
59
TEST(CommandUpdaterTest,TestObservers)60 TEST(CommandUpdaterTest, TestObservers) {
61 FakeCommandUpdaterDelegate delegate;
62 CommandUpdater command_updater(&delegate);
63
64 // Create an observer for the command 2 and add it to the controller, then
65 // update the command.
66 FakeCommandObserver observer;
67 command_updater.AddCommandObserver(2, &observer);
68 command_updater.UpdateCommandEnabled(2, true);
69 EXPECT_TRUE(observer.enabled());
70 command_updater.UpdateCommandEnabled(2, false);
71 EXPECT_FALSE(observer.enabled());
72
73 // Remove the observer and update the command.
74 command_updater.RemoveCommandObserver(2, &observer);
75 command_updater.UpdateCommandEnabled(2, true);
76 EXPECT_FALSE(observer.enabled());
77 }
78
TEST(CommandUpdaterTest,TestObserverRemovingAllCommands)79 TEST(CommandUpdaterTest, TestObserverRemovingAllCommands) {
80 FakeCommandUpdaterDelegate delegate;
81 CommandUpdater command_updater(&delegate);
82
83 // Create two observers for the commands 1-3 as true, remove one using the
84 // single remove command, then set the command to false. Ensure that the
85 // removed observer still thinks all commands are true and the one left
86 // observing picked up the change.
87
88 FakeCommandObserver observer_remove, observer_keep;
89 command_updater.AddCommandObserver(1, &observer_remove);
90 command_updater.AddCommandObserver(2, &observer_remove);
91 command_updater.AddCommandObserver(3, &observer_remove);
92 command_updater.AddCommandObserver(1, &observer_keep);
93 command_updater.AddCommandObserver(2, &observer_keep);
94 command_updater.AddCommandObserver(3, &observer_keep);
95 command_updater.UpdateCommandEnabled(1, true);
96 command_updater.UpdateCommandEnabled(2, true);
97 command_updater.UpdateCommandEnabled(3, true);
98 EXPECT_TRUE(observer_remove.enabled());
99
100 // Remove one observer and update the command. Check the states, which
101 // should be different.
102 command_updater.RemoveCommandObserver(&observer_remove);
103 command_updater.UpdateCommandEnabled(1, false);
104 command_updater.UpdateCommandEnabled(2, false);
105 command_updater.UpdateCommandEnabled(3, false);
106 EXPECT_TRUE(observer_remove.enabled());
107 EXPECT_FALSE(observer_keep.enabled());
108 }
109