public void BasicFx_Calculate_CallsBasicServiceMax()
{
// Arrange
var svc = Substitute.ForPartsOf <BasicService>();
var sb = new StringBuilder();
var count = 0;
svc.When(x => x.Max(Arg.Any <IEnumerable <StockPrice> >()))
.Do(info => {
sb.Append(ToString(info.ArgAt <IEnumerable <StockPrice> >(0)));
count++;
});
var fx = new BasicFx(svc);
var stockPrices = new[]
{
sp(1, 1),
sp(2, 2),
sp(3, 3)
};
// Act
fx.Calculate(stockPrices);
// Assert
Assert.AreEqual(3, count); // Gets called for each StockPrice.
Assert.AreEqual(
"(2, 2)(3, 3);(3, 3);empty;",
sb.ToString());
}
public void BasicFx_Calculate_CallsChooseBestOrder()
{
// Arrange
var svc = Substitute.ForPartsOf <BasicService>();
var sb = new StringBuilder();
var count = 0;
svc.When(x => x.ChooseBestOrder(Arg.Any <Order>(), Arg.Any <Order>()))
.Do(info => {
sb.Append(ToString(info.ArgAt <Order>(0)));
sb.Append(ToString(info.ArgAt <Order>(1)));
sb.Append(';');
count++;
});
var fx = new BasicFx(svc);
var stockPrices = new[]
{
sp(1, 1),
sp(2, 2),
sp(3, 3)
};
// Act
fx.Calculate(stockPrices);
// Assert
Assert.AreEqual(2, count); // Doesn't get called for the last StockPrice.
Assert.AreEqual(
"(null)(1,1,3,3);(1,1,3,3)(2,2,3,3);",
sb.ToString());
}
public void BasicFx_Calculate_Decending()
{
// Arrange
var fx = new BasicFx();
var stockPrices = new[]
{
sp(1, 94.35m),
sp(2, 94.06m),
sp(3, 93.51m),
sp(4, 93.50m), // Buy
sp(5, 93.50m), // Sell -- The maximum possible profit is zero.
sp(6, 93.23m),
sp(7, 93.06m),
sp(8, 92.85m),
sp(9, 92.31m),
sp(10, 91.99m)
};
// Act
var order = fx.Calculate(stockPrices);
// Assert
Assert.IsNotNull(order);
Assert.AreEqual(sp(4, 93.50m), order.Buy);
Assert.AreEqual(sp(5, 93.50m), order.Sell);
}
public void BasicFx_Calculate_ThrowsOnNullStockPrices()
{
// Arrange
var fx = new BasicFx();
// Act
fx.Calculate(null);
}
public void BasicFx_Calculate_ThrowsWhenStockPricesCountLessThanTwo()
{
// Arrange
var fx = new BasicFx();
var stockPrices = new[]
{
sp(1, 1)
};
// Act
fx.Calculate(stockPrices);
}
public void BasicFx_Calculate_TwoPotentialBuyDates()
{
// Arrange
var fx = new BasicFx();
var stockPrices = new[]
{
sp(1, 91.00m),
sp(2, 90.00m), // Don't buy. Too early.
sp(3, 90.00m), // Buy
sp(4, 92.00m),
sp(5, 95.00m) // Sell
};
// Act
var order = fx.Calculate(stockPrices);
// Assert
Assert.IsNotNull(order);
Assert.AreEqual(sp(3, 90.00m), order.Buy);
Assert.AreEqual(sp(5, 95.00m), order.Sell);
}
public void BasicFx_Calculate_Returns()
{
// Arrange
var fx = new BasicFx();
var stockPrices = new[]
{
sp(1, 1),
sp(2, 2),
sp(3, 3)
};
// Act
var result = fx.Calculate(stockPrices);
// Assert
Assert.IsNotNull(result);
Assert.AreEqual(
sp(1, 1),
result.Buy);
Assert.AreEqual(
sp(3, 3),
result.Sell);
}
public void BasicFx_CtorSvc_ThrowsOnNullSvc()
{
// Act
var fx = new BasicFx(null);
}
