public void Calling_ReleaseReadLock_should_release_lock()
{
using var readWriteLock = new TinyReadWriteLock(Guid.NewGuid().ToString(), 1);
readWriteLock.AcquireReadLock();
readWriteLock.IsReaderLockHeld.ShouldBeTrue();
readWriteLock.ReleaseReadLock();
readWriteLock.IsReaderLockHeld.ShouldBeFalse();
}
public void Calling_AcquireReadLock_then_AquireWriteLock_should_wait_for_other_lock()
{
var lockId = Guid.NewGuid().ToString();
using var readWriteLock1 = new TinyReadWriteLock(lockId, 2);
using var readWriteLock2 = new TinyReadWriteLock(lockId, 2);
readWriteLock1.AcquireReadLock();
var writeLockTask = Task.Run(() => readWriteLock2.AcquireWriteLock());
WaitForTaskToStart(writeLockTask);
readWriteLock1.IsReaderLockHeld.ShouldBeTrue();
readWriteLock2.IsWriterLockHeld.ShouldBeFalse();
readWriteLock1.ReleaseReadLock();
writeLockTask.Wait();
readWriteLock1.IsReaderLockHeld.ShouldBeFalse();
readWriteLock2.IsWriterLockHeld.ShouldBeTrue();
}
public void Calling_ReleaseReadLock_without_any_lock_held_should_throw()
{
using var readWriteLock = new TinyReadWriteLock(Guid.NewGuid().ToString(), 1);
Should.Throw <SemaphoreFullException>(() => readWriteLock.ReleaseReadLock());
}