public async Task ProcessRemoveDesiredPropertiesUpdateSubscription()
{
// Arrange
var edgeHub = new Mock <IEdgeHub>();
edgeHub.Setup(e => e.RemoveSubscription("d1", DeviceSubscription.DesiredPropertyUpdates))
.Returns(Task.CompletedTask);
var connMgr = Mock.Of <IConnectionManager>();
var identity = Mock.Of <IDeviceIdentity>(i => i.Id == "d1");
var deviceProxy = new Mock <IDeviceProxy>();
IMessage sentMessage = null;
deviceProxy.Setup(d => d.SendTwinUpdate(It.IsAny <IMessage>()))
.Callback <IMessage>(m => sentMessage = m)
.Returns(Task.CompletedTask);
var listener = new DeviceMessageHandler(identity, edgeHub.Object, connMgr, DefaultMessageAckTimeout, Option.None <string>());
listener.BindDeviceProxy(deviceProxy.Object);
string correlationId = Guid.NewGuid().ToString();
// Act
await listener.RemoveDesiredPropertyUpdatesSubscription(correlationId);
// Assert
Assert.NotNull(sentMessage);
Assert.Equal(correlationId, sentMessage.SystemProperties[SystemProperties.CorrelationId]);
Assert.Equal("200", sentMessage.SystemProperties[SystemProperties.StatusCode]);
edgeHub.VerifyAll();
}
