public void LockForReadingWithWriteLocks()
{
using (var datasetLock = new DatasetLock())
{
Assert.IsFalse(datasetLock.IsLockedForReading);
Assert.IsFalse(datasetLock.IsLockedForWriting);
var writeLockEventRaised = false;
var writeUnlockEventRaised = false;
var readLockEventRaised = false;
datasetLock.OnLockForWriting += (s, e) => { writeLockEventRaised = true; };
datasetLock.OnUnlockFromWriting += (s, e) => { writeUnlockEventRaised = true; };
datasetLock.OnLockForReading += (s, e) => { readLockEventRaised = true; };
var key1 = datasetLock.LockForWriting();
var task = Task <DatasetLockKey> .Factory.StartNew(datasetLock.LockForReading);
Assert.IsTrue(writeLockEventRaised);
Assert.IsFalse(writeUnlockEventRaised);
Assert.IsFalse(readLockEventRaised);
var key2 = datasetLock.LockForWriting();
Assert.IsNotNull(key2);
Assert.IsTrue(writeLockEventRaised);
Assert.IsFalse(writeUnlockEventRaised);
Assert.IsFalse(readLockEventRaised);
datasetLock.RemoveWriteLock(key1);
Assert.IsTrue(writeLockEventRaised);
Assert.IsFalse(writeUnlockEventRaised);
Assert.IsFalse(readLockEventRaised);
datasetLock.RemoveWriteLock(key2);
var key3 = task.Result;
Assert.IsNotNull(key3);
Assert.IsTrue(writeLockEventRaised);
Assert.IsTrue(writeUnlockEventRaised);
Assert.IsTrue(readLockEventRaised);
}
}
public void LockForReadingWithWriteLocks()
{
using (var datasetLock = new DatasetLock())
{
Assert.IsFalse(datasetLock.IsLockedForReading);
Assert.IsFalse(datasetLock.IsLockedForWriting);
var writeLockEventRaised = false;
var writeUnlockEventRaised = false;
var readLockEventRaised = false;
datasetLock.OnLockForWriting += (s, e) => { writeLockEventRaised = true; };
datasetLock.OnUnlockFromWriting += (s, e) => { writeUnlockEventRaised = true; };
datasetLock.OnLockForReading += (s, e) => { readLockEventRaised = true; };
var key1 = datasetLock.LockForWriting();
var task = Task<DatasetLockKey>.Factory.StartNew(datasetLock.LockForReading);
Assert.IsTrue(writeLockEventRaised);
Assert.IsFalse(writeUnlockEventRaised);
Assert.IsFalse(readLockEventRaised);
var key2 = datasetLock.LockForWriting();
Assert.IsNotNull(key2);
Assert.IsTrue(writeLockEventRaised);
Assert.IsFalse(writeUnlockEventRaised);
Assert.IsFalse(readLockEventRaised);
datasetLock.RemoveWriteLock(key1);
Assert.IsTrue(writeLockEventRaised);
Assert.IsFalse(writeUnlockEventRaised);
Assert.IsFalse(readLockEventRaised);
datasetLock.RemoveWriteLock(key2);
var key3 = task.Result;
Assert.IsNotNull(key3);
Assert.IsTrue(writeLockEventRaised);
Assert.IsTrue(writeUnlockEventRaised);
Assert.IsTrue(readLockEventRaised);
}
}
public void LockForWritingWithNoLocks()
{
using (var datasetLock = new DatasetLock())
{
Assert.IsFalse(datasetLock.IsLockedForReading);
Assert.IsFalse(datasetLock.IsLockedForWriting);
var eventWasRaised = false;
datasetLock.OnLockForWriting += (s, e) => { eventWasRaised = true; };
var key = datasetLock.LockForWriting();
Assert.IsNotNull(key);
Assert.IsTrue(eventWasRaised);
Assert.IsTrue(datasetLock.IsLockedForWriting);
Assert.IsFalse(datasetLock.IsLockedForReading);
}
}
public void LockForWritingWithNoLocks()
{
using (var datasetLock = new DatasetLock())
{
Assert.IsFalse(datasetLock.IsLockedForReading);
Assert.IsFalse(datasetLock.IsLockedForWriting);
var eventWasRaised = false;
datasetLock.OnLockForWriting += (s, e) => { eventWasRaised = true; };
var key = datasetLock.LockForWriting();
Assert.IsNotNull(key);
Assert.IsTrue(eventWasRaised);
Assert.IsTrue(datasetLock.IsLockedForWriting);
Assert.IsFalse(datasetLock.IsLockedForReading);
}
}
