public async Task Command_can_register_to_receive_a_cancellation_signal_from_the_console()
{
// Arrange
var commandType = DynamicCommandBuilder.Compile(
// language=cs
@"
[Command]
public class Command : ICommand
{
public async ValueTask ExecuteAsync(IConsole console)
{
try
{
await Task.Delay(
TimeSpan.FromSeconds(3),
console.RegisterCancellationHandler()
);
console.Output.WriteLine(""Completed successfully"");
}
catch (OperationCanceledException)
{
console.Output.WriteLine(""Cancelled"");
throw;
}
}
}");
var application = new CliApplicationBuilder()
.AddCommand(commandType)
.UseConsole(FakeConsole)
.Build();
// Act
FakeConsole.RequestCancellation(TimeSpan.FromSeconds(0.2));
var exitCode = await application.RunAsync(
Array.Empty <string>(),
new Dictionary <string, string>()
);
var stdOut = FakeConsole.ReadOutputString();
// Assert
exitCode.Should().NotBe(0);
stdOut.Trim().Should().Be("Cancelled");
}