public async Task NotSaveUserWhenUserIsAlreadyExist()
{
// Arrange
var command = new CreateUserCommand(UserId, Name, _notes);
var user = Substitute.ForPartsOf <User>(UserId, Name, _notes);
_repository.GetByIdAsync <User>(UserId).ReturnsForAnyArgs(user);
// Act
var result = await _sut.Handle(command, CancellationToken.None);
// Assert
Assert.True(result.IsSuccess);
_userFactory.DidNotReceive().Create(Arg.Is(UserId), Arg.Is(Name), Arg.Is(_notes));
user.DidNotReceive().Init();
await _repository.DidNotReceive().SaveAsync(Arg.Is <User>(p => p.id == UserId && p.Name == Name && p.Notes.SequenceEqual(_notes)));
}
