public void AbstractFactoryTest()
{
// The client code can work with any concrete factory class.
const int firstExpectedResult = 2;
ClientMethod(new ConcreteFactory1());
_productA.AddingFunction(1).Should().Be(firstExpectedResult);
_productB.UsefulFunctionB().Should().Be(Text.ResultB1);
_productB.AnotherUsefulFunctionB(_productA).Should()
.Be(Text.WithTheResultFromTheFirstFunction(firstExpectedResult));
const int secondExpectedResult = 3;
ClientMethod(new ConcreteFactory2());
_productA.AddingFunction(1).Should().Be(secondExpectedResult);
_productB.UsefulFunctionB().Should().Be(Text.ResultB2);
_productB.AnotherUsefulFunctionB(_productA).Should()
.Be(Text.WithTheResultFromTheSecondFunction(secondExpectedResult));
}
// The variant, Product B1, is only able to work correctly with the
// variant, Product A1. Nevertheless, it accepts any instance of
// AbstractProductA as an argument.
public string AnotherUsefulFunctionB(IAbstractProductA collaborator)
{
var result = collaborator.AddingFunction(1);
return(Text.WithTheResultFromTheFirstFunction(result));
}