public void Conta_Controller_Post_DeveFuncionar()
{
int id = 1;
_contaServicoMock.Setup(c => c.Inserir(_conta.Object)).Returns(id);
IHttpActionResult callback = _contasController.Inserir(_conta.Object);
var httpResponse = callback.Should().BeOfType <OkNegotiatedContentResult <int> >().Subject;
httpResponse.Content.Should().Be(id);
_contaServicoMock.Verify(c => c.Inserir(_conta.Object), Times.Once);
}