Inheritance: ICommand
コード例 #1
0
        public void RegisterACommandShouldRaiseCanExecuteEvent()
        {
            TestableCompositeCommand multiCommand = new TestableCompositeCommand();
            TestCommand testCommand = new TestCommand();

            multiCommand.RegisterCommand(new TestCommand());
            Assert.IsTrue(multiCommand.CanExecuteChangedRaised);
        }
コード例 #2
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        public void ShouldDelegateCanExecuteToSingleRegistrant()
        {
            TestableCompositeCommand multiCommand = new TestableCompositeCommand();
            TestCommand testCommand = new TestCommand();

            multiCommand.RegisterCommand(testCommand);

            Assert.IsFalse(testCommand.CanExecuteCalled);
            multiCommand.CanExecute(null);
            Assert.IsTrue(testCommand.CanExecuteCalled);
        }
コード例 #3
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        public void ShouldDelegateCanExecuteToMultipleRegistrants()
        {
            TestableCompositeCommand multiCommand = new TestableCompositeCommand();
            TestCommand testCommandOne = new TestCommand();
            TestCommand testCommandTwo = new TestCommand();

            multiCommand.RegisterCommand(testCommandOne);
            multiCommand.RegisterCommand(testCommandTwo);

            Assert.IsFalse(testCommandOne.CanExecuteCalled);
            Assert.IsFalse(testCommandTwo.CanExecuteCalled);
            multiCommand.CanExecute(null);
            Assert.IsTrue(testCommandOne.CanExecuteCalled);
            Assert.IsTrue(testCommandTwo.CanExecuteCalled);
        }
コード例 #4
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        public void CanExecuteShouldReturnTrueIfAllRegistrantsTrue()
        {
            TestableCompositeCommand multiCommand = new TestableCompositeCommand();
            TestCommand testCommandOne = new TestCommand() { CanExecuteValue = true };
            TestCommand testCommandTwo = new TestCommand() { CanExecuteValue = true };

            multiCommand.RegisterCommand(testCommandOne);
            multiCommand.RegisterCommand(testCommandTwo);

            Assert.IsTrue(multiCommand.CanExecute(null));
        }
コード例 #5
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        public void RegisteringCommandTwiceThrows()
        {
            var compositeCommand = new CompositeCommand();
            var duplicateCommand = new TestCommand();
            compositeCommand.RegisterCommand(duplicateCommand);

            compositeCommand.RegisterCommand(duplicateCommand);
        }
コード例 #6
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        public void UnregisterCommandDisconnectsCanExecuteChangedDelegate()
        {
            TestableCompositeCommand multiCommand = new TestableCompositeCommand();
            TestCommand testCommandOne = new TestCommand() { CanExecuteValue = true };

            multiCommand.RegisterCommand(testCommandOne);
            multiCommand.UnregisterCommand(testCommandOne);
            multiCommand.CanExecuteChangedRaised = false;
            testCommandOne.FireCanExecuteChanged();
            Assert.IsFalse(multiCommand.CanExecuteChangedRaised);
        }
コード例 #7
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        public void UnregisterCommandShouldRaiseCanExecuteEvent()
        {
            TestableCompositeCommand multiCommand = new TestableCompositeCommand();
            TestCommand testCommandOne = new TestCommand();

            multiCommand.RegisterCommand(testCommandOne);
            multiCommand.CanExecuteChangedRaised = false;
            multiCommand.UnregisterCommand(testCommandOne);

            Assert.IsTrue(multiCommand.CanExecuteChangedRaised);
        }
コード例 #8
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        public void UnregisterCommandRemovesFromExecuteDelegation()
        {
            TestableCompositeCommand multiCommand = new TestableCompositeCommand();
            TestCommand testCommandOne = new TestCommand() { CanExecuteValue = true };

            multiCommand.RegisterCommand(testCommandOne);
            multiCommand.UnregisterCommand(testCommandOne);

            Assert.IsFalse(testCommandOne.ExecuteCalled);
            multiCommand.Execute(null);
            Assert.IsFalse(testCommandOne.ExecuteCalled);
        }
コード例 #9
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        public void ShouldReraiseCanExecuteChangedEventAfterCollect()
        {
            TestableCompositeCommand multiCommand = new TestableCompositeCommand();
            TestCommand testCommandOne = new TestCommand() { CanExecuteValue = true };

            Assert.IsFalse(multiCommand.CanExecuteChangedRaised);
            multiCommand.RegisterCommand(testCommandOne);
            multiCommand.CanExecuteChangedRaised = false;

            GC.Collect();

            testCommandOne.FireCanExecuteChanged();
            Assert.IsTrue(multiCommand.CanExecuteChangedRaised);
        }
コード例 #10
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        public void RegisteringCommandTwiceThrows()
        {
            var compositeCommand = new CompositeCommand();
            var duplicateCommand = new TestCommand();
            compositeCommand.RegisterCommand(duplicateCommand);

            Assert.ThrowsException<InvalidOperationException>(() => compositeCommand.RegisterCommand(duplicateCommand));
        }