[TestCase(10, CalcOperatorType.Subtraction, 4, CalcOperatorType.Division, 2, 8)] // 10 - 4 / 2 public void ThreeOperands(double op1, CalcOperatorType calcType1, double op2, CalcOperatorType calcType2, double op3, double expected) { var sut = new CalculatorRPN(); sut.AddNumber(op1); sut.AddOperator(new CalcOperator(calcType1)); sut.AddNumber(op2); sut.AddOperator(new CalcOperator(calcType2)); sut.AddNumber(op3); Assert.AreEqual(expected, sut.Value()); }
[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 CalculatorRPN(); sut.AddNumber(op1); sut.AddOperator(new CalcOperator(calcType)); sut.AddNumber(op2); Assert.AreEqual(expected, sut.Value(precision)); }
[TestCase(3, CalcOperatorType.Addition)] // 3 + public void SingleOperandException(double op1, CalcOperatorType calcType) { var sut = new CalculatorRPN(); sut.AddNumber(op1); sut.AddOperator(new CalcOperator(calcType)); double x; var ex = Assert.Throws <TokenException>(() => x = sut.Value()); Assert.AreEqual("Not enough values to perform operation.", ex.Message); }
[TestCase(3, CalcOperatorType.Addition, 2, 1)] // 3 + 2 1 public void TooManyOperandException(double op1, CalcOperatorType calcType, double op2, double op3) { var sut = new CalculatorRPN(); sut.AddNumber(op1); sut.AddOperator(new CalcOperator(calcType)); sut.AddNumber(op2); sut.AddNumber(op3); double x; var ex = Assert.Throws <TokenException>(() => x = sut.Value()); Assert.AreEqual("Too many remaining operands.", ex.Message); }