public void AddTwoIntegers()
{
AddExpression expr = new AddExpression(new ConstantExpression(1), new ConstantExpression(2));
Assert.AreEqual(3, expr.Evaluate(null));
Assert.IsFalse(expr.HasVariable());
}
public void AddVariableAndInteger()
{
Context context = new Context();
context.SetValue("One", 1);
AddExpression expr = new AddExpression(new VariableExpression(new Variable("One")), new ConstantExpression(2));
Assert.AreEqual(3, expr.Evaluate(context));
Assert.IsTrue(expr.HasVariable());
}
public void AddIntegerAndVariable()
{
Context context = new Context();
context.SetValue("Two", 2);
AddExpression expr = new AddExpression(new ConstantExpression(1), new VariableExpression(new Variable("Two")));
Assert.AreEqual(3, expr.Evaluate(context));
Assert.IsTrue(expr.HasVariable());
}
