public async Task Acquire_lock_multiple_times_work()
{
const string lockName = "my-lock";
var locker = new SqlServerDistributedAppLockProvider(_connectionFactory,
new SqlServerDistributedAppLockConfig
{
DisposeDbConnection = false
});
using (await locker.AcquireAsync(lockName))
{
// mutual exclusion scope here
}
using (await locker.AcquireAsync(lockName))
{
// mutual exclusion scope here
}
using (await locker.AcquireAsync(lockName))
{
// mutual exclusion scope here
}
}
public async Task Acquire_with_auto_expiry_throws()
{
var ex = await Assert.ThrowsAsync <DistributedAppLockException>(async() =>
{
var locker = new SqlServerDistributedAppLockProvider(_connectionFactory);
await locker.AcquireAsync("theLock", TimeSpan.Zero, TimeSpan.MaxValue);
});
Assert.IsAssignableFrom <NotSupportedException>(ex.InnerException);
}
public async Task Default_behavior_disposes_connection()
{
var hasBeenDisposed = false;
_connection.Disposed += (sender, args) => { hasBeenDisposed = true; };
var provider = new SqlServerDistributedAppLockProvider(_connectionFactory);
var handle = await provider.AcquireAsync("some-lock");
handle.Dispose();
await Task.Delay(50);
Assert.True(hasBeenDisposed);
Assert.Equal(ConnectionState.Closed, _connection.State);
}
public async Task Configured_behavior_leaves_connection_intact()
{
var hasBeenDisposed = false;
_connection.Disposed += (sender, args) => { hasBeenDisposed = true; };
var provider = new SqlServerDistributedAppLockProvider(_connectionFactory,
new SqlServerDistributedAppLockConfig
{
DisposeDbConnection = false
});
var handle = await provider.AcquireAsync("some-lock");
handle.Dispose();
await Task.Delay(50);
Assert.False(hasBeenDisposed);
Assert.Equal(ConnectionState.Open, _connection.State);
}
public async Task Throws_if_given_connection_is_not_open()
{
var locker = new SqlServerDistributedAppLockProvider(() => new SqlConnection(_connectionString));
var ex = await Assert.ThrowsAsync <DistributedAppLockException>(async() => { await locker.AcquireAsync("TheLock"); });
var arEx = Assert.IsAssignableFrom <ArgumentException>(ex.InnerException);
Assert.Equal("dbConnection", arEx.ParamName);
}
