Refactor and added some tests
Refactor and create tests (#5) * Refactor and create tests * Rename test names for better readability * Rename testShowCards to testShowCard This is to show that only one card is being retrieved by the show() method.
Refactor and create tests (#5) * Refactor and create tests * Rename test names for better readability * Rename testShowCards to testShowCard This is to show that only one card is being retrieved by the show() method.