public async Task ConsumerTriggersMessageReceiver()
{
var channelMock = new Mock <IModel>();
var properties = new Mock <IBasicProperties>();
var simulatedPayload = new ReadOnlyMemory <byte>(new byte[] { 1, 1, 1 });
AsyncEventingBasicConsumer?basicConsumer = null; // Once the channelMock registers a consumer, we'll fill it in here.
using var hosted = new HostedRabbitMqService(_options.Object, _logger.Object, _connectionService.Object, _messageReceiver.Object);
using var cancellation = new CancellationTokenSource();
_connectionService.Setup(c => c.GetChannel()).Returns(channelMock.Object);
// in reality an extension method with a simpler signature is called, but Moq won't allow us to simulate that directly. So we expand the called extension method here.
channelMock.Setup(c => c.BasicConsume(QueueName, It.IsAny <bool>(), It.IsAny <string>(), It.IsAny <bool>(), It.IsAny <bool>(), It.IsAny <IDictionary <string, object> >(), It.IsAny <AsyncEventingBasicConsumer>()))
.Callback <string, bool, string, bool, bool, IDictionary <string, object>, IBasicConsumer>((name, autoAck, consumerTag, noLocal, exclusive, arguments, consumer) =>
{
// Consumer here is an actual RabbitMQ consumer waiting for our model to fire stuff.
basicConsumer = consumer as AsyncEventingBasicConsumer;
});
_messageReceiver.Setup(m => m.HandleIncoming(typeof(DummyEvent), simulatedPayload)).Returns(Task.CompletedTask).Verifiable("Message receiver was not called!");
await hosted.StartAsync(cancellation.Token);
basicConsumer?.HandleBasicDeliver(string.Empty, 420, false, string.Empty, QueueName, properties.Object, simulatedPayload);
channelMock.Verify();
_messageReceiver.Verify();
await hosted.StopAsync(cancellation.Token);
}
public async Task DeclaresQueuesOnStartup()
{
var channelMock = new Mock <IModel>();
using var hosted = new HostedRabbitMqService(_options.Object, _logger.Object, _connectionService.Object, _messageReceiver.Object);
using var cancellation = new CancellationTokenSource();
_connectionService.Setup(c => c.GetChannel()).Returns(channelMock.Object);
channelMock.Setup(channel => channel.QueueDeclare(QueueName, It.IsAny <bool>(), It.IsAny <bool>(), It.IsAny <bool>(), It.IsAny <Dictionary <string, object> >()))
.Verifiable($"Queue {QueueName} did not get declared!");
await hosted.StartAsync(cancellation.Token);
channelMock.Verify();
await hosted.StopAsync(cancellation.Token);
}