public void Test_Checkout_Invalid_Input()
{
checkout a = new checkout();
result result1 = a.bill("Apole,Apple,Apple,Avocado,Apple");
Assert.AreEqual("Please check the input", result1.errormessage);
}
public void Test_Checkout()
{
checkout a = new checkout();
decimal result = (decimal)0.85;
result result1 = a.bill("Apple,Apple,Apple,Avocado,Apple");
Assert.AreEqual(result, result1.opresult);
}