public void Check_That_Right_Method_Was_Called_Inside_IsGameKeyAvailable_Action()
{
// Arrange
var mockGameService = new Mock <IGameService>();
mockGameService.Setup(m => m.GameExists(It.IsAny <string>(), It.IsAny <int>()))
.Returns(false);
ValidationController validationController = GetValidationController(mockGameService);
const string key = "key";
const int currentGameId = 1;
// Act
validationController.IsGameKeyAvailable(key, currentGameId);
// Assert
mockGameService.Verify(m => m.GameExists(key, currentGameId));
}