public void ShouldReturnStatementsInDescendingDateOrderWhenPrintingBalance()
{
DateTime today = DateTime.Now;
ITransactions transactions = Substitute.For <ITransactions>();
List <AccountStatement> statements = new List <AccountStatement>
{
new AccountStatement(today.AddDays(2), 100, 200),
new AccountStatement(today.AddDays(1), -100, 100),
new AccountStatement(today, 200, 200)
};
IBalanceRetriever balanceRetriever = Substitute.For <IBalanceRetriever>();
balanceRetriever.GetStatements().Returns(statements);
var bankingService = new BankingService(transactions, balanceRetriever);
var balance = bankingService.PrintBalance();
var expectedStatements = new List <AccountStatement>
{
new AccountStatement(today.AddDays(2), 100, 200),
new AccountStatement(today.AddDays(1), -100, 100),
new AccountStatement(today, 200, 200)
};
Check.That(balance.GetAccountStatements()).IsEqualTo(expectedStatements);
}
public void ShouldAddWithdrawIntoTransactions()
{
DateTime today = DateTime.Now;
ITransactions transactions = Substitute.For <ITransactions>();
IBalanceRetriever balanceRetriever = Substitute.For <IBalanceRetriever>();
var bankingService = new BankingService(transactions, balanceRetriever);
uint withdrawAmount = 200;
bankingService.Withdraw(withdrawAmount, today);
transactions.Received().Add(Arg.Is <ITransaction>(t => t.GetType() == typeof(Withdraw)));
}
public void ShouldReturnNoStatementWhenHavingNoTransaction()
{
DateTime today = DateTime.Now;
ITransactions transactions = Substitute.For <ITransactions>();
List <AccountStatement> noStatements = new List <AccountStatement>();
IBalanceRetriever balanceRetriever = Substitute.For <IBalanceRetriever>();
balanceRetriever.GetStatements().Returns(noStatements);
var bankingService = new BankingService(transactions, balanceRetriever);
var balance = bankingService.PrintBalance();
Check.That(balance.GetAccountStatements()).IsEmpty();
}
public void ShouldReturnOneStatementWhenHavingOneWithdrawTransaction()
{
DateTime today = DateTime.Now;
ITransactions transactions = Substitute.For <ITransactions>();
List <AccountStatement> statements = new List <AccountStatement>
{
new AccountStatement(today, -100, -100)
};
IBalanceRetriever balanceRetriever = Substitute.For <IBalanceRetriever>();
balanceRetriever.GetStatements().Returns(statements);
var bankingService = new BankingService(transactions, balanceRetriever);
var balance = bankingService.PrintBalance();
Check.That(balance.GetAccountStatements())
.ContainsExactly(new AccountStatement(today, -100, -100));
}
public BankingService(ITransactions transactions, IBalanceRetriever balanceRetriever)
{
this.transactions = transactions;
this.balanceRetriever = balanceRetriever;
}
