public async void TryToAcquireLockAfterItIsReleased(int lockMilliseconds)
{
var timeout = TimeSpan.FromMilliseconds(lockMilliseconds * 10);
var file = new FileInfo(FileLockTestPath.GetTempFileName());
var firstAcquireTask = await Helpers.AcquireLockAndReleaseAfterDelay(file, 0);
using (var secondLock = new FileLockWithTimeout(file))
{
var secondFileLock = await secondLock.TryAcquireOrTimeout(TimeSpan.FromMilliseconds(lockMilliseconds), timeout);
Assert.True(secondFileLock);
}
Assert.True(firstAcquireTask);
}
public static async Task <bool> AcquireLockAndReleaseAfterDelay(FileInfo file, int lockMilliseconds)
{
ILockWithTimeout fileLock = new FileLockWithTimeout(file);
if (!await fileLock.TryAcquire(TimeSpan.FromMilliseconds(lockMilliseconds)))
{
return(false);
}
using (fileLock)
{
await Task.Delay(lockMilliseconds);
}
return(true);
}
public async void LockShouldNotWaitTillTimeoutToBeAcquiredIfNotLocked(int lockSeconds)
{
var file = new FileInfo(FileLockTestPath.GetTempFileName());
var fileLock = new FileLockWithTimeout(file);
using (fileLock)
{
var stopWatch = new Stopwatch();
stopWatch.Start();
await fileLock.TryAcquireOrTimeout(TimeSpan.FromSeconds(lockSeconds),
TimeSpan.FromSeconds(lockSeconds));
stopWatch.Stop();
Assert.True(stopWatch.ElapsedMilliseconds < lockSeconds * 1000 / 2);
}
}
public async void TryToAcquireLockBeforeOfficialRelease(int lockMilliseconds)
{
var timeToRelease = lockMilliseconds / 4;
var maximumTimeToWait = lockMilliseconds - FileLockWithTimeout.MinimumMilliseconds;
var file = new FileInfo(FileLockTestPath.GetTempFileName());
var firstAcquireTask = Helpers.AcquireLockAndReleaseAfterDelay(file, timeToRelease);
using (var secondLock = new FileLockWithTimeout(file))
{
var secondLockTimeout = TimeSpan.FromMilliseconds(lockMilliseconds);
var secondLockRetryMs = TimeSpan.FromMilliseconds(FileLockWithTimeout.MinimumMilliseconds);
var timeoutMs = TimeSpan.FromMilliseconds(lockMilliseconds);
var secondFileLock = secondLock.TryAcquireOrTimeout(secondLockTimeout, timeoutMs, secondLockRetryMs);
Assert.True(await Task.WhenAny(secondFileLock, Task.Delay(maximumTimeToWait)) == secondFileLock);
}
Assert.True(await firstAcquireTask);
}
