public void Evaluate_Substract_Negative_Test()
{
Expression left = CreateIntLiteral(1);
Expression right = CreateIntLiteral(2);
Expression substract = new Subtract(left, right, pos);
Values.Int value = ((Values.Int)substract.Accept(evaluator));
Assert.IsTrue(value.GetValue() == -1);
}
public void Evaluate_Substract_Positive_Test()
{
Expression left = CreateIntLiteral(2);
Expression right = CreateIntLiteral(1);
Expression substract = new Subtract(left, right, pos);
Values.Int value = ((Values.Int)substract.Accept(evaluator));
Assert.IsTrue(value.GetValue() == 1);
}