public static async Task Test_Retrieve_Characters_By_Account_Id_Works(params string[] names)
{
//arrange
ICharacterRepository repository = BuildEmptyRepository();
//act: Add all to the same account key
foreach(string n in names)
await repository.TryCreateAsync(new CharacterEntryModel(1, n));
//Add another not associated with the first id
await repository.TryCreateAsync(new CharacterEntryModel(2, Guid.NewGuid().ToString()));
int[] result = await repository.CharacterIdsForAccountId(1);
//assert
Assert.AreEqual(names.Length, result.Length, $"Expected character id collection length to be the same count as names.");
foreach(int key in result)
Assert.True(names.Contains((await repository.RetrieveAsync(key)).CharacterName));
}