public void SubtractStrategy_Compute_HandlesDoubleMaxValuesWithZero()
{
SubtractStrategy strategy = new SubtractStrategy();
List <double> inputs = new List <double> {
0, double.MaxValue
};
Assert.DoesNotThrowAsync(() => strategy.Compute(inputs), Resources.ListOutOfRange);
}
public void SubtractStrategy_Compute_HandlesDoubleMaxValues()
{
SubtractStrategy strategy = new SubtractStrategy();
List <double> inputs = new List <double> {
-double.MaxValue, double.MaxValue
};
Assert.ThrowsAsync <CalculatorException>(() => strategy.Compute(inputs));
}
public async Task SubtractStrategy_Compute_HandlesPositiveValues()
{
SubtractStrategy strategy = new SubtractStrategy();
List <double> inputs = new List <double> {
-1, 2, -4, 1, 7, 0, 8, 0, 12, 57302
};
var result = await strategy.Compute(inputs);
Assert.AreEqual(-57329, result, 0.0001); // The tolerance delta used here is due to the fact that double is used instead of decimal for speed
}
public async Task SubtractStrategy_Compute_ReturnsCorrectResult()
{
SubtractStrategy strategy = new SubtractStrategy();
List <double> inputs = new List <double> {
3, 4.2, 6
};
var result = await strategy.Compute(inputs);
Assert.AreEqual(-7.2, result, 0.00000001); // The tolerance delta used here is due to the fact that double is used instead of decimal for speed
}
public void SubtractStrategy_Compute_HandlesNullInput()
{
SubtractStrategy strategy = new SubtractStrategy();
Assert.ThrowsAsync <CalculatorException>(() => strategy.Compute(MockInputs.NullList));
}
