public GroceryItemRule GetPricingRule(string ruleText)
{
GroceryItemRule rule;
if (ruleText.Contains("get")) //covers get one for
rule = new BuyOneGetOneRule(ruleText);
else if (ruleText.Contains("for")) //covers for $2.00
rule = new GroupRule(ruleText);
else
rule = new PercentOffRule(ruleText);
return rule;
}
public void TestingPercentDiscount()
{
const string rule = "50% off";
const int expected = 100;
var gRule = new PercentOffRule(rule);
var saved = gRule.ProcessAmountSaved(40, 5);
Assert.AreEqual(expected, saved);
}