Including the test cards with factory constructors for a quick testing for the developer

[anasfik]

Hi,
The Dart programming language offers a great and convenient feature for the case of testing YouCan pay and test cardsn which is the factory constructors.

After exploring the SDK's code, I can see many ways to improve it, for the sake of the Flutter developer that will improve his experience, one of them is offering the test cards as factory constructors, taking as an example:

it would be helpful to use a CardInformation.testCard1() :

factory CardInformation.testCard1() {
    return CardInformation(
      cardHolderName: "SOME TEST NAME HERE",
      cardNumber: "4242424242424242",
      expireDateYear: "24",
      expireDateMonth: "10",
      cvv: "112",
    );
  }

The same thing of other test cards!

and now when using the payWithCard() you can simply call that factory constructor directly in the cardInformation field, without the need of leaving the editor or hardcoding the card values every time.