public void InfixTestShouldGive14()
{
var RPC = new ReversePolishCalculator();
RPC.InitOperations();
Assert.AreEqual(14d, RPC.InfixCalculation("( 5 + ( ( 1 + 2 ) * 4 ) ) - 3"));
}
public void Calculate_SingleAdd()
{
var target = new ReversePolishCalculator();
var result = target.Calculate("5 6 +");
result.Should().Be(11);
}
public void Calculate_SingleSubtract()
{
var target = new ReversePolishCalculator();
var result = target.Calculate("5 6 -");
result.Should().Be(-1);
}
public void Calculate_NestedAdd()
{
var target = new ReversePolishCalculator();
var result = target.Calculate("1 2 + 3 4 + +");
result.Should().Be(10);
}
public void Calculate_SingleValue()
{
var target = new ReversePolishCalculator();
var result = target.Calculate("5");
result.Should().Be(5);
}
public void Calculate_SingleMultiply()
{
var target = new ReversePolishCalculator();
var result = target.Calculate("5 6 *");
result.Should().Be(30);
}
public void InfixTestPowBeforeX()
{
var RPC = new ReversePolishCalculator();
Assert.AreEqual(1d, RPC.InfixCalculation("1 ^ 2 * 3"));
Assert.AreEqual(8d, RPC.InfixCalculation("1 * 2 ^ 3"));
}
public void InfixTestNothingAndNull()
{
var RPC = new ReversePolishCalculator();
Assert.AreEqual(0d, RPC.InfixCalculation(""));
Assert.AreEqual(0d, RPC.InfixCalculation(null));
}
public void Calculate_SingleDivide()
{
var target = new ReversePolishCalculator();
var result = target.Calculate("20 5 /");
result.Should().Be(4);
}
public void InfixTestComplexExpressions()
{
var RPC = new ReversePolishCalculator();
Assert.AreEqual(2d, RPC.InfixCalculation("( 2 + 2 ) - 2"));
Assert.AreEqual(9d, RPC.InfixCalculation("( ( 3 - 2 ) + 2 ) * 3"));
Assert.AreEqual(6d, RPC.InfixCalculation("( ( 3 * 3 ) + ( 5 - 2 ) ) / 2"));
}
public void InfixTestXBeforePlus()
{
var RPC = new ReversePolishCalculator();
Assert.AreEqual(7d, RPC.InfixCalculation("1 + 2 * 3"));
Assert.AreEqual(5d, RPC.InfixCalculation("1 * 2 + 3"));
Assert.AreEqual(33d, RPC.InfixCalculation("5 + ( 1 + 2 * 3 ) * 4"));
}
public void Calculate_Mixed()
{
// (1 + 2) * (15 / 5) = 9
var target = new ReversePolishCalculator();
var result = target.Calculate("1 2 + 15 5 / *");
result.Should().Be(9);
}
public void InfixTestAllOperaters()
{
var RPC = new ReversePolishCalculator();
Assert.AreEqual(4d, RPC.InfixCalculation("2 + 2"));
Assert.AreEqual(1d, RPC.InfixCalculation("3 - 2"));
Assert.AreEqual(9d, RPC.InfixCalculation("3 * 3"));
Assert.AreEqual(1d, RPC.InfixCalculation("3 / 3"));
Assert.AreEqual(81d, RPC.InfixCalculation("3 ^ 4"));
}
public void TestNothingAndNull()
{
var RPC = new ReversePolishCalculator();
RPC.InitOperations();
Assert.AreEqual(0d, RPC.Calculation(""));
Assert.AreEqual(0d, RPC.Calculation(null));
}
public void TestComplexExpressions()
{
var RPC = new ReversePolishCalculator();
RPC.InitOperations();
Assert.AreEqual(2d, RPC.Calculation("2 2 + 2 -"));
Assert.AreEqual(9d, RPC.Calculation("3 2 - 2 + 3 *"));
Assert.AreEqual(6d, RPC.Calculation("3 3 * 5 2 - + 2 /"));
}
public void Compute_Pow2To8_Return256()
{
ReversePolishCalculator.Compute("2 8 pow").Should().Be(256);
}
public void Compute_InvalidExpression2_ThrowsException()
{
Action act = () => ReversePolishCalculator.Compute("+ 1");
act.Should().Throw <ArgumentException>();
}
public void Compute_WithEmptyString_ReturnZero()
{
ReversePolishCalculator.Compute("").Should().Be(0);
}
public void Compute_Sqrt16_Return4()
{
ReversePolishCalculator.Compute("16 sqrt").Should().Be(4);
}
public void Compute_WithDivisionOfTwoNumbers_ReturnTheQuotient()
{
ReversePolishCalculator.Compute("10 5 /").Should().Be(2);
}
public void TestAllOperaters()
{
var RPC = new ReversePolishCalculator();
Assert.AreEqual(4d, RPC.reversePolishNotation("2 2 +"));
Assert.AreEqual(1d, RPC.reversePolishNotation("3 2 -"));
Assert.AreEqual(9d, RPC.reversePolishNotation("3 3 *"));
Assert.AreEqual(1d, RPC.reversePolishNotation("3 3 /"));
Assert.AreEqual(81d, RPC.reversePolishNotation("3 4 ^"));
}
public void Compute_WithSubstractionOfTwoNumbers_ReturnTheDifference()
{
ReversePolishCalculator.Compute("7 5 -").Should().Be(2);
}
public void Compute_WithMultiplicationOfTwoNumbers_ReturnTheProduct()
{
ReversePolishCalculator.Compute("7 5 *").Should().Be(35);
}
public void TestShouldGive14()
{
var RPC = new ReversePolishCalculator();
RPC.InitOperations();
Assert.AreEqual(14d, RPC.Calculation("5 1 2 + 4 * + 3 -"));
}
public void SetUp()
{
rpCalculator = new ReversePolishCalculator();
}
public void Compute_WithNullString_ReturnZero()
{
ReversePolishCalculator.Compute(null).Should().Be(0);
}
public void TestAllOperaters()
{
var RPC = new ReversePolishCalculator();
RPC.InitOperations();
Assert.AreEqual(4d, RPC.Calculation("2 2 +"));
Assert.AreEqual(1d, RPC.Calculation("3 2 -"));
Assert.AreEqual(9d, RPC.Calculation("3 3 *"));
Assert.AreEqual(1d, RPC.Calculation("3 3 /"));
Assert.AreEqual(81d, RPC.Calculation("3 4 ^"));
Assert.AreEqual(2d, RPC.Calculation("2 4 - abs"));
Assert.AreEqual(3d, RPC.Calculation("9 sqrt"));
}
public void Compute_WithNumberRaisedToExponent_ReturnThePower()
{
ReversePolishCalculator.Compute("10 5 ^").Should().Be(100000);
}
// Helper methods
// to make the tests more readable
private int Calculate(string expression)
{
return(ReversePolishCalculator.Compute(ShuntingYard.Parse(expression)));
}
public void Compute_512Plus4TimesPlus3Minus_Return14()
{
ReversePolishCalculator.Compute("5 1 2 + 4 * + 3 -").Should().Be(14);
}
public void Compute_WithSingleNumber_ReturnTheNumber()
{
ReversePolishCalculator.Compute("7").Should().Be(7);
}
public void Setup()
{
reversePolishCalculator = new ReversePolishCalculator();
}
public void Setup()
{
_calculator = new ReversePolishCalculator();
}
public void Compute_WithAdditionOfTwoNumbers_ReturnTheSum()
{
ReversePolishCalculator.Compute("7 5 +").Should().Be(12);
}