public void Conta_Controller_Get_BuscarTodas_Sucesso()
{
Conta conta = ObjectMother.ObterContaValida();
conta.Id = 1;
IQueryable <Conta> response = new List <Conta>()
{
conta
}.AsQueryable();
_contaServicoMock.Setup(s => s.BuscarTodos()).Returns(response);
IHttpActionResult callback = _contasController.BuscarTodos();
_contaServicoMock.Verify(s => s.BuscarTodos(), Times.Once);
var httpResponse = callback.Should().BeOfType <OkNegotiatedContentResult <List <Conta> > >().Subject;
httpResponse.Content.Should().NotBeNullOrEmpty();
httpResponse.Content.First().Id.Should().Be(conta.Id);
}