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// Copyright (c) 2011 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.
#import <Cocoa/Cocoa.h>
#include "base/memory/scoped_nsobject.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/command_updater.h"
#import "chrome/browser/ui/cocoa/command_observer_bridge.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/platform_test.h"
// Implements the callback interface. Records the last command id and
// enabled state it has received so it can be queried by the tests to see
// if we got a notification or not.
@interface CommandTestObserver : NSObject<CommandObserverProtocol> {
@private
int lastCommand_; // id of last received state change
bool lastState_; // state of last received state change
}
- (int)lastCommand;
- (bool)lastState;
@end
@implementation CommandTestObserver
- (void)enabledStateChangedForCommand:(NSInteger)command enabled:(BOOL)enabled {
lastCommand_ = command;
lastState_ = enabled;
}
- (int)lastCommand {
return lastCommand_;
}
- (bool)lastState {
return lastState_;
}
@end
namespace {
class CommandObserverBridgeTest : public PlatformTest {
public:
CommandObserverBridgeTest()
: updater_(new CommandUpdater(NULL)),
observer_([[CommandTestObserver alloc] init]) {
}
scoped_ptr<CommandUpdater> updater_;
scoped_nsobject<CommandTestObserver> observer_;
};
// Tests creation and deletion. NULL arguments aren't allowed.
TEST_F(CommandObserverBridgeTest, Create) {
CommandObserverBridge bridge(observer_.get(), updater_.get());
}
// Observes state changes on command ids 1 and 2. Ensure we don't get
// a notification of a state change on a command we're not observing (3).
// Commands start off enabled in CommandUpdater.
TEST_F(CommandObserverBridgeTest, Observe) {
CommandObserverBridge bridge(observer_.get(), updater_.get());
bridge.ObserveCommand(1);
bridge.ObserveCommand(2);
// Validate initial state assumptions.
EXPECT_EQ([observer_ lastCommand], 0);
EXPECT_EQ([observer_ lastState], false);
EXPECT_EQ(updater_->IsCommandEnabled(1), true);
EXPECT_EQ(updater_->IsCommandEnabled(2), true);
updater_->UpdateCommandEnabled(1, false);
EXPECT_EQ([observer_ lastCommand], 1);
EXPECT_EQ([observer_ lastState], false);
updater_->UpdateCommandEnabled(2, false);
EXPECT_EQ([observer_ lastCommand], 2);
EXPECT_EQ([observer_ lastState], false);
updater_->UpdateCommandEnabled(1, true);
EXPECT_EQ([observer_ lastCommand], 1);
EXPECT_EQ([observer_ lastState], true);
// Change something we're not watching and make sure the last state hasn't
// changed.
updater_->UpdateCommandEnabled(3, false);
EXPECT_EQ([observer_ lastCommand], 1);
EXPECT_NE([observer_ lastCommand], 3);
EXPECT_EQ([observer_ lastState], true);
}
} // namespace
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