public void ParseOnlyAllowsSimpleExpressions()
{
Parse twoPlusThree = new Parse("2 - 5 + 3");
twoPlusThree.setOperatorIndex();
twoPlusThree.firstNum();
twoPlusThree.secondNum();
}
public void ParseOnlyAllowsNumbersSecond()
{
Parse twoPlusThree = new Parse("2 + b");
twoPlusThree.setOperatorIndex();
twoPlusThree.firstNum();
twoPlusThree.secondNum();
}
public void ParseCanFindSecondNum()
{
Parse twoPlusThree = new Parse("2 + 3");
twoPlusThree.setOperatorIndex();
twoPlusThree.firstNum();
Assert.AreEqual(3, twoPlusThree.secondNum());
}
public void ParseAllowsConstantsFirst()
{
Constant newConstant = new Constant();
Parse aplus3 = new Parse("a + 3", newConstant);
aplus3.addConst("a", 5);
aplus3.setOperatorIndex();
Assert.AreEqual(5, aplus3.firstNum());
}
public void ParseOnlyAllowsNumbersFirst()
{
Parse twoPlusThree = new Parse("a + 3");
twoPlusThree.firstNum();
}
