[TestCase(-2, CalcOperatorType.Division, 3, 2, -0.67)] // 1 / 6
public void Precision(double op1, CalcOperatorType calcType, double op2, int precision, double expected)
{
var sut = new CalculatorAPI();
sut.AddNumber(op1);
sut.AddOperator(new CalcOperator(calcType));
sut.AddNumber(op2);
Assert.AreEqual(expected, sut.Value(precision));
}
[TestCase(6, CalcOperatorType.Division, 0.5, 12)] // 6 / 0.5
public void TwoOperandsAPI(double op1, CalcOperatorType calcType, double op2, double expected)
{
var sut = new CalculatorAPI();
sut.AddNumber(op1);
sut.AddOperator(new CalcOperator(calcType));
sut.AddNumber(op2);
Assert.AreEqual(expected, sut.Value());
}
[TestCase(10, CalcOperatorType.Subtraction, 4, CalcOperatorType.Division, 2, 8)] // 10 - 4 / 2
public void ThreeOperandsException(double op1, CalcOperatorType calcType1, double op2, CalcOperatorType calcType2, double op3, double result)
{
var sut = new CalculatorAPI();
sut.AddNumber(op1);
sut.AddOperator(new CalcOperator(calcType1));
sut.AddNumber(op2);
var ex = Assert.Throws <CalculatorException>(() => sut.AddOperator(new CalcOperator(calcType2)));
Assert.AreEqual("API does not support BEDMAS processing.", ex.Message);
}
[TestCase(3, CalcOperatorType.Addition, 2, 1)] // 3 + 2 1
public void TooManyOperandExceptionAPI(double op1, CalcOperatorType calcType, double op2, double op3)
{
var sut = new CalculatorAPI();
sut.AddNumber(op1);
sut.AddOperator(new CalcOperator(calcType));
sut.AddNumber(op2);
sut.AddNumber(op3);
double x;
var ex = Assert.Throws <System.AggregateException>(() => x = sut.Value());
Assert.AreEqual("One or more errors occurred. (Response status code does not indicate success: 400 (Bad Request).)", ex.Message);
}