public void Process_Complex_Test()
{
RPNCalculatorEngine r = new RPNCalculatorEngine();
Assert.AreEqual("8", r.Process("1 3 + 2 X"));
Assert.AreEqual("5", r.Process("1 3 2 + X"));
Assert.AreEqual("-5", r.Process("1 2 3 4 + - X"));
}
public void Process_Basic_Test()
{
RPNCalculatorEngine r = new RPNCalculatorEngine();
Assert.AreEqual("2", r.Process("1 1 +"));
Assert.AreEqual("1", r.Process("3 2 -"));
Assert.AreEqual("6", r.Process("3 2 X"));
Assert.AreEqual("2", r.Process("4 2 ÷"));
Assert.AreEqual("0", r.Process("1 -1 +"));
Assert.AreEqual("5", r.Process("3 -2 -"));
Assert.AreEqual("-1", r.Process("2 3 -"));
Assert.AreEqual("-6", r.Process("3 -2 X"));
Assert.AreEqual("-2", r.Process("-4 2 ÷"));
}
public void Process_Error_Test()
{
RPNCalculatorEngine r = new RPNCalculatorEngine();
Assert.AreEqual("E", r.Process("1"));
Assert.AreEqual("E", r.Process("1 +"));
Assert.AreEqual("E", r.Process("1 + 1"));
Assert.AreEqual("E", r.Process("1 1 1 +"));
Assert.AreEqual("E", r.Process("+"));
Assert.AreEqual("E", r.Process("+ 1"));
Assert.AreEqual("E", r.Process("+ 1 1"));
Assert.AreEqual("E", r.Process("1 1 1 + + +"));
}
public void EmptyArgumentTest()
{
Assert.AreEqual("E", engine.Process(null));
Assert.AreEqual("E", engine.Process(""));
}
