Ceylon: creating testdata is a breeze

	/**
	In java it's really difficult to create complex objects for unit testing. There have been some attempts to
	workaround this difficulty like using
	- Object mothers --> factories to create objects (this becomes messy very quickly as well)
	- Test Data builders --> http://java.dzone.com/articles/creating-objects-java-unit-tes
	In Ceylon it becomes really easy to create testdata in an easy fashion as we will see.
	We just make use of named arguments to construct our objects.
	**/
	shared class Car(engine, radio, tires) {
	shared Engine engine;
	shared Radio radio;
	shared {Tire*} tires;
	shared actual String string =>
	"Car {
	engine=``engine``
	radio=``radio``
	tires=``tires``
	}";
	}
	shared class Engine(shared Float horsepower) {
	shared actual String string => "Engine(``horsepower``)";
	}
	shared class Radio(shared String type) {
	shared actual String string => "Radio(``type``)";
	}
	shared class Tire(shared String brand) {
	shared actual String string => "Tire(``brand``)";
	}
	/**
	Using the multiline string representation of Car we get a really nicely
	formatted output :)
	Car {
	engine=Engine(150.0)
	radio=Radio(FM)
	tires=[Tire(Pirelli), Tire(Pirelli), Tire(Pirelli), Tire(Pirelli)]
	}
	**/
	void demoCreatingTestData() {
	Car car = Car {
	engine = Engine(150.0);
	radio = Radio("FM");
	tires = {Tire("Pirelli"),Tire("Pirelli"),Tire("Pirelli"),Tire("Pirelli")};
	};
	print(car);
	}

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