public void Execute_ShouldCompleteAction()
{
var result = 0;
var expected = 10;
var command = new Command(() => result += expected / 2, () => result -= expected / 2);
CommandChain.StartWith(command).Then(command).Execute();
Assert.That(result, Is.EqualTo(expected));
}
internal WalletTransferTransaction(Decimal amount, AbstractWallet sourceWallet, AbstractWallet destinationWallet)
: base
(
amount,
CommandChain
.StartWith(new ReduceBalanceCommand(sourceWallet, amount))
.Then(new IncreaseBalanceCommand(destinationWallet, amount))
)
{
}
public void Execute_ShouldThrowExceptionAndRevertAction()
{
var result = 0;
var expected = result;
var command = new Command(() => result += 2, () => result -= 2);
var badCommand = new Command(() => throw new InvalidOperationException(), () => throw new InvalidOperationException());
var chain = CommandChain.StartWith(command).Then(badCommand);
Assert.Throws <CommandExecutionException>(chain.Execute);
Assert.That(result, Is.EqualTo(expected));
}
public void Revert_ShouldCompleteRevertAction()
{
var result = 0;
var expected = result;
var command = new Command(() => result += 2, () => result -= 2);
var chain = CommandChain.StartWith(command).Then(command);
chain.Execute();
chain.Revert();
Assert.That(result, Is.EqualTo(expected));
}
public void ExecuteWithRevertExceptions_ShouldThrowExceptionWithCorrectRevertExceptionsAndRevertAction()
{
var result = 0;
var expected = 4;
var command = new Command(() => result += 2, () => result -= 2);
var badRevertCommand = new Command(() => result += 2, () => throw new InvalidOperationException());
var badCommand = new Command(() => throw new InvalidOperationException(), () => throw new InvalidOperationException());
var chain = CommandChain.StartWith(command).Then(badRevertCommand).Then(badRevertCommand).Then(badCommand);
try
{
chain.Execute();
}
catch (CommandChainExecutionException exception)
{
Assert.That(exception.RevertException.InnerExceptions.Count, Is.EqualTo(2));
}
Assert.That(result, Is.EqualTo(expected));
}
