public async Task ConnectAsync_CalledFromMultipleSenders_ClientConnectedOnce()
{
var sender1 = new object();
var sender2 = new object();
var mqttClientConfig = new MqttClientConfig();
var mqttClient = Substitute.For <IMqttClient>();
mqttClient.ConnectAsync(Arg.Any <IMqttClientOptions>(), Arg.Any <CancellationToken>())
.ReturnsForAnyArgs(_ => Task.FromResult(new MqttClientAuthenticateResult()));
var clientWrapper = new MqttClientWrapper(
mqttClient,
mqttClientConfig,
Substitute.For <IBrokerCallbacksInvoker>(),
Substitute.For <ISilverbackLogger>());
var task1 = clientWrapper.ConnectAsync(sender1);
var task2 = clientWrapper.ConnectAsync(sender2);
task2.Should().BeSameAs(task1);
await task1;
await mqttClient.Received(1).ConnectAsync(
Arg.Any <IMqttClientOptions>(),
Arg.Any <CancellationToken>());
await mqttClient.Received(1).ConnectAsync(
mqttClientConfig.GetMqttClientOptions(),
Arg.Any <CancellationToken>());
}
