public void ExecuteTest()
        {
            int        counter = 0;
            OwnCommand command = new OwnCommand(() => counter++);

            command.Execute(null);
            Assert.AreEqual(1, counter);
            command.Execute(null);
            Assert.AreEqual(2, counter);
        }
        public void CanExecuteTest()
        {
            OwnCommand command = new OwnCommand(doNothing);

            command.Execute(null);
            Assert.IsTrue(command.CanExecute(null));
            command = new OwnCommand(doNothing, () => false);
        }