public void BasicService_Max_ReturnsNullWhenInputIsEmpty()
{
// Arrange
var svc = new BasicService();
var stockPrices = new StockPrice[0];
// Act
var result = svc.Max(stockPrices);
// Assert
Assert.IsFalse(result.HasValue);
}
public void BasicService_Max_ReturnsFirstOfTwoEqualMaxValues()
{
// Arrange
var svc = new BasicService();
var stockPrices = new[]
{
sp(1, 1),
sp(2, 3), // Should return this one because it is earlier.
sp(3, 3) // This one is the same as the previous.
};
// Act
var result = svc.Max(stockPrices);
// Assert
Assert.IsTrue(result.HasValue);
Assert.AreEqual(sp(2, 3), result.Value);
}
public void BasicService_Max_ReturnsGreatestOfStockPrices()
{
// Arrange
var svc = new BasicService();
var stockPrices = new[]
{
sp(1, 1),
sp(2, 2),
sp(3, 3) // This one is the greatest.
};
// Act
var result = svc.Max(stockPrices);
// Assert
Assert.IsTrue(result.HasValue);
Assert.AreEqual(sp(3, 3), result.Value);
}