public void TestLockOnClosedTransaction()
{
using (var connection = new SqlConnection(SqlDistributedLockTest.ConnectionString))
{
connection.Open();
IDisposable handle;
using (var transaction = connection.BeginTransaction())
{
handle = new SqlDistributedReaderWriterLock("b", transaction).AcquireWriteLock();
SqlTransactionScopedDistributedLockTest.IsHeld("b").ShouldEqual(true);
}
TestHelper.AssertDoesNotThrow(handle.Dispose);
SqlTransactionScopedDistributedLockTest.IsHeld("b").ShouldEqual(false);
}
}
public void TestIsNotScopedToTransaction()
{
using (var connection = new SqlConnection(SqlDistributedLockTest.ConnectionString))
{
connection.Open();
using (var handle = new SqlDistributedLock("a", connection).Acquire())
{
using (var transaction = connection.BeginTransaction())
{
transaction.Rollback();
}
SqlTransactionScopedDistributedLockTest.IsHeld("a").ShouldEqual(true);
}
}
}
public void TestCloseLockOnClosedConnection()
{
using (var connection = new SqlConnection(SqlDistributedLockTest.ConnectionString))
{
TestHelper.AssertThrows <InvalidOperationException>(() => new SqlDistributedLock("a", connection).Acquire());
connection.Open();
var @lock = new SqlDistributedLock("a", connection);
var handle = @lock.Acquire();
SqlTransactionScopedDistributedLockTest.IsHeld("a").ShouldEqual(true);
connection.Dispose();
TestHelper.AssertDoesNotThrow(handle.Dispose);
// lock can be re-acquired
SqlTransactionScopedDistributedLockTest.IsHeld("a").ShouldEqual(false);
}
}
public void TestLockOnCommittedBackTransaction()
{
using (var connection = new SqlConnection(SqlDistributedLockTest.ConnectionString))
{
connection.Open();
using (var transaction = connection.BeginTransaction())
{
var handle = new SqlDistributedReaderWriterLock("d", transaction).AcquireWriteLock();
SqlTransactionScopedDistributedLockTest.IsHeld("d").ShouldEqual(true);
transaction.Commit();
TestHelper.AssertDoesNotThrow(handle.Dispose);
SqlTransactionScopedDistributedLockTest.IsHeld("d").ShouldEqual(false);
TestHelper.AssertThrows <InvalidOperationException>(() => new SqlDistributedReaderWriterLock("d", transaction).AcquireWriteLock());
}
}
}