public static void TestCanExecute()
{
int result = 0;
DelegateAction <int> action = new DelegateAction <int>((i) => result = i + i, (i) => i == result);
Assert.That(action.CanExecute(0), Is.True);
Assert.That(action.CanExecute(1), Is.False);
}
public static void TestExecuteWithNoConditionForCanExecute()
{
int result = 0;
DelegateAction <int> action = new DelegateAction <int>((i) => result = i + i);
Assert.That(action.CanExecute(0), Is.True);
Assert.That(action.CanExecute(1), Is.True);
result = 5;
action.Execute(5);
Assert.That(result, Is.EqualTo(10));
}
public static void TestExecuteWhenNotCanExecute()
{
int result = 0;
DelegateAction <int> action = new DelegateAction <int>((i) => result = i + i, (i) => i == result);
Assert.That(action.CanExecute(0), Is.True);
Assert.Throws <InvalidOperationException>(() => action.Execute(5));
}