private static void RegisterDatasetLock(ContainerBuilder builder)
{
builder.Register(c => new DatasetLock())
.OnActivated(
a =>
{
DatasetLock obj = a.Instance;
var notifications = a.Context.Resolve <IDatasetApplicationNotificationInvoker>();
obj.OnLockForReading += (s, e) => notifications.RaiseOnSwitchToEditingMode();
obj.OnUnlockFromReading += (s, e) => notifications.RaiseOnSwitchToExecutingMode();
})
.As <ITrackDatasetLocks>()
.SingleInstance();
}
public void LockForReadingWithNoLocks()
{
using (var datasetLock = new DatasetLock())
{
Assert.IsFalse(datasetLock.IsLockedForReading);
Assert.IsFalse(datasetLock.IsLockedForWriting);
var eventWasRaised = false;
datasetLock.OnLockForReading += (s, e) => { eventWasRaised = true; };
var key = datasetLock.LockForReading();
Assert.IsNotNull(key);
Assert.IsTrue(eventWasRaised);
Assert.IsTrue(datasetLock.IsLockedForReading);
Assert.IsFalse(datasetLock.IsLockedForWriting);
}
}
public void LockForReadingWithNoLocks()
{
using (var datasetLock = new DatasetLock())
{
Assert.IsFalse(datasetLock.IsLockedForReading);
Assert.IsFalse(datasetLock.IsLockedForWriting);
var eventWasRaised = false;
datasetLock.OnLockForReading += (s, e) => { eventWasRaised = true; };
var key = datasetLock.LockForReading();
Assert.IsNotNull(key);
Assert.IsTrue(eventWasRaised);
Assert.IsTrue(datasetLock.IsLockedForReading);
Assert.IsFalse(datasetLock.IsLockedForWriting);
}
}
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);
}
}
