public void CanIHandleMoreThanTwoOperators()
{
//Arrange
Evaluate calcEval = new Evaluate();
//Act
object [] badInput = { 1, '+', '/', 4 };
calcEval.EvalMath(badInput);
}
public void CanIModuloNumbers()
{
//Arrange
Evaluate Modulo = new Evaluate();
//Act
var expected = 2;
object[] userInput = { 11, "%", 3 };
double actual = Modulo.EvalMath(userInput);
//Assert
Assert.AreEqual(expected, actual);
}
public void CanIDivideTwoNumbers()
{
//Arrange
Evaluate Division = new Evaluate();
//Act
var expected = .25;
object[] userInput = { 1, "/", 4 };
double actual = Division.EvalMath(userInput);
//Assert
Assert.AreEqual(expected, actual);
}
public void CanIMultiplyTwoNumbers()
{
//Arrange
Evaluate Multiply = new Evaluate();
//Act
var expected = 10;
object[] userInput = { 2, "*", 5 };
double actual = Multiply.EvalMath(userInput);
//Assert
Assert.AreEqual(expected, actual);
}
public void CanISubtractTwoNumbers()
{
//Arrange
Evaluate Subtract = new Evaluate();
//Act
var expected = 1;
object[] userInput = { 3, "-", 2 };
double actual = Subtract.EvalMath(userInput);
//Assert
Assert.AreEqual(expected, actual);
}
public void CanIHandleSetLastAnswerOnMultipleCalculations()
{
//Arrange
Evaluate calcEval = new Evaluate();
object[] expression1 = { 4, "-", 2 };
object[] expression2 = { 2, "+", 3 };
object[] expression3 = { 3, "*", 5 };
object[] lastExpression = expression3;
double lastAnswer = 15;
//Act
calcEval.EvalMath(expression1);
calcEval.EvalMath(expression2);
calcEval.EvalMath(expression3);
var actualAnswer = calcEval.Stack.LastAns;
var actualExpression = calcEval.Stack.LastExp;
//Assert
CollectionAssert.AreEqual(actualExpression, lastExpression);
Assert.AreEqual(actualAnswer, lastAnswer);
}
public void CanIHandleSetLastExpression()
{
//Arrange
Evaluate calcEval = new Evaluate();
object[] expression = { 4, "-", 2 };
//Act
calcEval.EvalMath(expression);
var actual = calcEval.Stack.LastExp;
//Assert
CollectionAssert.AreEqual(actual, expression);
}
public void CanIAddTwoNumbers()
{
//Arrange
Evaluate evaluate = new Evaluate();
//Act
int expected = 5;
object[] userInput = { 2, "+", 3 };
double actual = evaluate.EvalMath(userInput);
//Assert
Assert.AreEqual(expected, actual);
}
public void CanIHandleSetLastAnswer()
{
//Arrange
Evaluate calcEval = new Evaluate();
object[] expression = { 4, "-", 2 };
double expected = 2;
//Act
calcEval.EvalMath(expression);
var actual = calcEval.Stack.LastAns;
//Assert
Assert.AreEqual(actual, expected);
}