public async Task Dispose()
{
// Create a mutex, acquire it, and then create another task that will
// attempt to acquire it as well (and will fail because the mutex has
// already been acquired). Then dispose the mutex and verify that the
// waiting task saw the [ObjectDisposedException].
var mutex = new AsyncMutex();
var inTask = false;
var acquired = false;
var disposed = false;
await mutex.AcquireAsync();
var task = Task.Run(
async() =>
{
try
{
var acquireTask = mutex.AcquireAsync();
inTask = true;
await acquireTask;
acquired = true;
}
catch (ObjectDisposedException)
{
disposed = true;
}
});
// Wait for the task to have called [AcquireAsync()].
NeonHelper.WaitFor(() => inTask, defaultTimeout);
// Dispose the mutex, wait for the task to exit and then verify
// that it caught the [ObjectDisposedException].
mutex.Dispose();
task.Wait(defaultTimeout);
Assert.False(acquired);
Assert.True(disposed);
}