public void Print_ShouldPrintAddExpression()
{
var a = new Lit(7);
var b = new Lit(8);
var add = new AddInt(a, b);
Assert.That(add.Print(), Is.EqualTo("7+8"));
}
public void Eval_ShouldAddTwoInteger()
{
var a = new Lit(7);
var b = new Lit(8);
var add = new AddInt(a, b);
Assert.That(add.Eval(), Is.EqualTo(15));
}
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));
}
public SubInt(Lit left, Lit right)
{
_left = left;
_right = right;
}
public AddInt(Lit left, Lit right)
{
_left = left;
_right = right;
}