public void NegativeInteger_Integer_CorrectNegativeValue(int input, int expected)
{
IntegerLiteralExpression intLitExpr = new IntegerLiteralExpression(input, 0, 0);
NegativeExpression negExpr = new NegativeExpression(new List <ExpressionNode>()
{
intLitExpr
}, 0, 0);
IInterpreterInteger parent = Substitute.For <IInterpreterInteger>();
parent.DispatchInt(intLitExpr, Arg.Any <List <object> >()).Returns(input);
IntegerHelper integerHelper = SetUpHelper(parent);
double res = integerHelper.NegativeInteger(negExpr, new List <object>());
Assert.AreEqual(expected, res);
}
