public void DivideStrategy_Compute_HandlesDivideByZero()
{
DivideStrategy strategy = new DivideStrategy();
List <double> inputs = new List <double> {
1, 0, 2, 3
};
Assert.ThrowsAsync <CalculatorException>(() => strategy.Compute(inputs));
}
public async Task DivideStrategy_Compute_HandlesAllPositiveValues()
{
DivideStrategy strategy = new DivideStrategy();
List <double> inputs = new List <double> {
1, 2, 3, 4, 5
};
var result = await strategy.Compute(inputs);
Assert.AreEqual(0.008, result, 0.001); // The tolerance delta used here is due to the fact that double is used instead of decimal for speed
}
public async Task DivideStrategy_Compute_ReturnsCorrectResult()
{
DivideStrategy strategy = new DivideStrategy();
List <double> inputs = new List <double> {
3, 4.2, 6
};
var result = await strategy.Compute(inputs);
Assert.AreEqual(0.12, result, 0.01); // The tolerance delta used here is due to the fact that double is used instead of decimal for speed
}
public async Task DivideStrategy_Compute_HandlesNegativeValues()
{
DivideStrategy strategy = new DivideStrategy();
List <double> inputs = new List <double> {
-1, 2, -4, 1, 7, 8, 12, 5730203
};
var result = await strategy.Compute(inputs);
// This is a real edgecase with precision going up to E11
Assert.AreEqual(3.2461660566284434E-11, result, 0.1); // The tolerance delta used here is due to the fact that double is used instead of decimal for speed
}
public void DivideStrategy_Compute_HandlesNullInput()
{
DivideStrategy strategy = new DivideStrategy();
Assert.ThrowsAsync <CalculatorException>(() => strategy.Compute(MockInputs.NullList));
}