public void Scan_Checks_Item_Code()
{
var wrapper = new CheckoutTestWrapper();
wrapper.SetupServices();
var target = wrapper.GetTarget();
target.Scan("A");
wrapper.MockUnitService.Verify(x => x.ValidateUnit("A"));
}
public void Scan_If_Item_Not_Valid_ThrowsException()
{
var wrapper = new CheckoutTestWrapper();
wrapper.SetupServices();
wrapper.MockUnitService.Setup(x => x.ValidateUnit(It.IsAny <string>())).Returns(false);
var target = wrapper.GetTarget();
var ex = Assert.Throws <ArgumentOutOfRangeException>(() => target.Scan("A"));
Assert.IsTrue(ex.Message.Contains("Invalid Stock Keeping Unit"));
}
public void Scan_Adds_Item_To_Basket_GetTotalPrice_Returns_Price()
{
var wrapper = new CheckoutTestWrapper();
wrapper.SetupServices();
var target = wrapper.GetTarget();
Assert.Zero(target.GetTotalPrice());
target.Scan("A");
var result = target.GetTotalPrice();
Assert.NotZero(result);
Assert.AreEqual(50, result);
}
public void GetTotalPrice_If_Offer_Valid_Returns_Offer_Price()
{
var wrapper = new CheckoutTestWrapper();
wrapper.SetupServices();
var target = wrapper.GetTarget();
Assert.Zero(target.GetTotalPrice());
target.Scan("A");
target.Scan("A");
target.Scan("A");
var result = target.GetTotalPrice();
Assert.NotZero(result);
Assert.AreEqual(130, result);
}
public void GetTotalPrice_Returns_Total_Price_Of_Items_In_Basket()
{
var wrapper = new CheckoutTestWrapper();
wrapper.SetupServices();
var target = wrapper.GetTarget();
Assert.Zero(target.GetTotalPrice());
target.Scan("A");
target.Scan("B");
target.Scan("C");
target.Scan("D");
var result = target.GetTotalPrice();
Assert.NotZero(result);
Assert.AreEqual(115, result);
}
public void GetTotalPrice_If_Offer_Valid_And_Items_Outside_Offer_Calculates_Correctly()
{
var wrapper = new CheckoutTestWrapper();
wrapper.SetupServices();
var target = wrapper.GetTarget();
Assert.Zero(target.GetTotalPrice());
target.Scan("B");
target.Scan("C");
target.Scan("B");
target.Scan("D");
target.Scan("B");
var result = target.GetTotalPrice();
Assert.NotZero(result);
Assert.AreEqual(110, result);
}
public void GetTotalPrice_If_Offer_Valid_With_Non_Sequential_Items_Calculates_Correctly()
{
var wrapper = new CheckoutTestWrapper();
wrapper.SetupServices();
var target = wrapper.GetTarget();
Assert.Zero(target.GetTotalPrice());
target.Scan("A");
target.Scan("C");
target.Scan("A");
target.Scan("D");
target.Scan("A");
var result = target.GetTotalPrice();
Assert.NotZero(result);
Assert.AreEqual(165, result);
}
