public void Print_ShouldPrintExpression() { var a = new Lit(7); var b = new Lit(8); var sub = new SubInt(a, b); Assert.That(sub.Print(), Is.EqualTo("7-8")); }
public void Eval_ShouldAddTwoInteger() { var a = new Lit(7); var b = new Lit(8); var sub = new SubInt(a, b); Assert.That(sub.Eval(), Is.EqualTo(-1)); }