public void ConstructorThrowsExceptionIfActionParameterIsNull()
{
Assert.Throws<ArgumentNullException>(() =>
{
RelayCommand command = new RelayCommand(null);
});
}
public void ExecuteInvokesAction()
{
bool invoked = false;
Action<object> action = x => invoked = true;
RelayCommand command = new RelayCommand(action);
command.Execute(null);
Assert.IsTrue(invoked);
}
public void ExecuteOverloadInvokesActionWithParameter()
{
bool invoked = false;
Action<object> action = x =>
{
Assert.IsNotNull(x);
invoked = true;
};
RelayCommand command = new RelayCommand(action);
command.Execute(new object());
Assert.IsTrue(invoked);
}
public void CanExecuteOverloadExecutesTruePredicate()
{
RelayCommand command = new RelayCommand(x => { }, y => (int)y == 1);
Assert.IsTrue(command.CanExecute(1));
}
public void CanExecuteIsTrueByDefault()
{
RelayCommand command = new RelayCommand(x => { });
Assert.IsTrue(command.CanExecute(null));
}