public void OrdensChances_Compras()
{
Assert.AreEqual(100, OrdensChances.Compra(10, 10.02M));
Assert.AreEqual(100, OrdensChances.Compra(10, 10.01M));
Assert.AreEqual(100, OrdensChances.Compra(10, 10));
Assert.AreEqual(99, OrdensChances.Compra(10, 9.99M));
Assert.AreEqual(97, OrdensChances.Compra(10, 9.98M));
Assert.AreEqual(94, OrdensChances.Compra(10, 9.97M));
Assert.AreEqual(90, OrdensChances.Compra(10, 9.96M));
Assert.AreEqual(85, OrdensChances.Compra(10, 9.95M));
Assert.AreEqual(79, OrdensChances.Compra(10, 9.94M));
Assert.AreEqual(72, OrdensChances.Compra(10, 9.93M));
Assert.AreEqual(64, OrdensChances.Compra(10, 9.92M));
Assert.AreEqual(55, OrdensChances.Compra(10, 9.91M));
Assert.AreEqual(45, OrdensChances.Compra(10, 9.90M));
Assert.AreEqual(34, OrdensChances.Compra(10, 9.89M));
Assert.AreEqual(22, OrdensChances.Compra(10, 9.88M));
Assert.AreEqual(9, OrdensChances.Compra(10, 9.87M));
var random = OrdensChances.Compra(10, 9.86M);
Assert.IsTrue(random > 0 && random < 1);
Assert.IsTrue(random > 0 && random < 1);
random = OrdensChances.Compra(10, 9.80M);
Assert.IsTrue(random > 0 && random < 1);
Assert.AreEqual(0, OrdensChances.Compra(10, 9.79M));
Assert.AreEqual(0, OrdensChances.Compra(10, 9.78M));
Assert.AreEqual(0, OrdensChances.Compra(10, 9.77M));
}
public async Task <ActionResult> Compra([Bind(Include = "OrdemId,Tipo,Preco,Quantidade,AcaoId")] Ordem ordem)
{
if (ModelState.IsValid)
{
var rd = new Random((int)DateTime.Now.Ticks);
var acao = await db.Acoes.FindAsync(ordem.AcaoId);
ordem.OrdemId = Guid.NewGuid();
ordem.UsuarioId = Guid.Parse(User.Identity.GetUserId());
ordem.DataHora = DateTime.Now;
ordem.Chance = OrdensChances.Compra(acao.Preco, ordem.Preco);
var percentual = (decimal)rd.NextDouble() * 100;
if (ordem.Chance >= percentual)
{
db.UsuariosAcoes.Add(new UsuarioAcao()
{
UsuarioAcaoId = Guid.NewGuid(),
AcaoId = ordem.AcaoId,
Ativo = true,
Compra = DateTime.Now,
Preco = ordem.Preco,
UsuarioId = ordem.UsuarioId,
Quantidade = ordem.Quantidade,
Total = ordem.Preco * ordem.Quantidade,
OrdensUsuariosAcoes = new List <OrdemUsuarioAcao>()
{
new OrdemUsuarioAcao
{
OrdemUsuarioAcaoId = Guid.NewGuid(),
OrdemId = ordem.OrdemId
}
}
});
}
db.Ordens.Add(ordem);
await db.SaveChangesAsync();
return(RedirectToAction("Index"));
}
await AcoesViewBag();
return(View(ordem));
}