public async Task Reverse()
{
var originalCount = _actualCount;
await _sut.ExecuteAsync();
Assert.AreNotEqual(originalCount, _actualCount);
await _sut.ReverseAsync();
Assert.AreEqual(originalCount, _actualCount);
}
public async Task CannotExecute()
{
int expectedCount = _actualCount;
var sut = new CommandReversibleAndDisableAbleAsync(
() => false,
_actionToExecute,
_undoAction);
await sut.ExecuteAsync();
Assert.AreEqual(expectedCount, _actualCount);
await sut.ReverseAsync();
Assert.AreEqual(expectedCount, _actualCount);
bool actualResult = await sut.CanExecuteAsync();
Assert.AreEqual(expected: false, actualResult);
}