public async Task CreateAsyncShouldCreateReceiptAndSaveItToDb()
{
var db = DbInfrastructure.GetDatabase();
var receiptService = new ReceiptService(db);
const decimal Fee = 5.23M;
const string UserId = "UserId";
await receiptService.CreateAsync(5.23M, 1, UserId);
var receipt = await db.Receipts.FindAsync(1);
receipt
.Should()
.NotBeNull();
receipt
.As<Receipt>()
.RecipientId.Should().Be(UserId);
receipt
.As<Receipt>()
.Fee.Should().Be(Fee);
}