public void NaoDeveDobrarCasoNaoHajaLanceAnterior()
{
Leilao leilao = new CriadorDeLeilao().Para("Macbook Pro 15").Constroi();
leilao.DobraLance(steveJobs);
Assert.AreEqual(0, leilao.Lances.Count);
}
public void DeveDobrarUltimoLance()
{
Leilao leilao = new CriadorDeLeilao().Para("Macbook Pro 15")
.Lance(steveJobs, 2000)
.Lance(billGates, 3000)
.Constroi();
leilao.DobraLance(steveJobs);
Assert.AreEqual(4000, leilao.Lances[2].Valor, 0.00001);
}