public async Task DepositFundsAsync_ValidDepositAmount_ReturnsExpectedBalance()
{
//// Arrange
decimal lastTransactionBalanceBefore = 10;
decimal lastTransactionAmount = 5;
decimal depositAmount = 5;
decimal depositBalanceBefore = 15;
// Setup Mocks
Mock <IWalletRepository> walletRepositoryMock = new Mock <IWalletRepository>();
WalletEntry lastTransaction = new WalletEntry {
Amount = lastTransactionAmount, BalanceBefore = lastTransactionBalanceBefore
};
walletRepositoryMock
.Setup(walletRepository => walletRepository.GetLastWalletEntryAsync())
.Returns(Task.FromResult(lastTransaction));
walletRepositoryMock
.Setup(walletRepositoryMock => walletRepositoryMock.InsertWalletEntryAsync(It.Is <WalletEntry>(
walletEntry => _compareWalletEntry(walletEntry, depositAmount, depositBalanceBefore)
))
)
.Returns(Task.CompletedTask);
IWalletRepository walletRepository = walletRepositoryMock.Object;
// Initialize SUT
IWalletService walletService = new WalletService(walletRepository);
Deposit deposit = new Deposit {
Amount = depositAmount
};
// Set expectations
decimal expectedBalanceAmount = 20;
Balance expectedBalance = new Balance {
Amount = expectedBalanceAmount
};
//// Act
Balance actualBalance = await walletService.DepositFundsAsync(deposit);
//// Assert
actualBalance.ShouldCompare(expectedBalance);
walletRepositoryMock.Verify(walletRepository => walletRepository.GetLastWalletEntryAsync(), Times.Once);
walletRepositoryMock.Verify(walletRepository => walletRepository.InsertWalletEntryAsync(It.Is <WalletEntry>(
walletEntry => _compareWalletEntry(walletEntry, depositAmount, depositBalanceBefore))
), Times.Once);
walletRepositoryMock.VerifyNoOtherCalls();
}