public void ObterTodos_DeveRetornarUmaLista() { // Arrange IEnumerable <Tarefa> lista = new List <Tarefa>() { new Tarefa(Guid.NewGuid(), "tarefa", DateTime.Now, Guid.NewGuid()) }; var clientId = Guid.NewGuid(); var data = DateTime.Now; // Act var mock = new Mock <ITarefaRepository>(); mock.Setup(t => t.ObterTodos(clientId, data)).Returns(lista); var service = new TarefaService(mock.Object, _mapper.Object); service.ObterTodos(clientId, data); // Assert mock.VerifyAll(); }