public void StartingTheHostASecondTimeThrowsException()
{
// Arrange
var contextMock = new Mock <IBusContext <IConnection> >();
var receiverMock = new Mock <IMessageReceiver>();
var logger = new Mock <ILogger <MicroserviceHost> >();
const string queue = "testQueue";
string[] topics = { "Topic1", "Topic2" };
contextMock.Setup(e => e.CreateMessageReceiver("testQueue", topics))
.Returns(receiverMock.Object);
var listeners = new[] { new MicroserviceListener {
TopicExpressions = topics
} };
var host = new MicroserviceHost(contextMock.Object, listeners, new List <MicroserviceCommandListener>(), queue, logger.Object);
host.Start();
// Act
void Act() => host.Start();
// Assert
BusConfigurationException exception = Assert.ThrowsException <BusConfigurationException>(Act);
Assert.AreEqual("Attempted to start the MicroserviceHost, but it has already started.", exception.Message);
}
public void StartListeningIsCalledOnReceiver()
{
// Arrange
var contextMock = new Mock <IBusContext <IConnection> >();
var receiverMock = new Mock <IMessageReceiver>();
var logger = new Mock <ILogger <MicroserviceHost> >();
const string queue = "testQueue";
string[] topics = { "Topic1", "Topic2" };
contextMock.Setup(e => e.CreateMessageReceiver(queue, topics))
.Returns(receiverMock.Object);
var listeners = new[] { new MicroserviceListener {
TopicExpressions = topics
} };
var host = new MicroserviceHost(contextMock.Object, listeners, new List <MicroserviceCommandListener>(), queue, logger.Object);
// Act
host.Start();
// Assert
receiverMock.Verify(e => e.StartReceivingMessages());
}
public void ResumingHostSetsIsPausedToFalse()
{
// Arrange
var contextMock = new Mock <IBusContext <IConnection> >();
var receiverMock = new Mock <IMessageReceiver>();
var logger = new Mock <ILogger <MicroserviceHost> >();
const string queue = "testQueue";
string[] topics = { "Topic1", "Topic2" };
contextMock.Setup(e => e.CreateMessageReceiver(queue, topics))
.Returns(receiverMock.Object);
var listeners = new[] { new MicroserviceListener {
TopicExpressions = topics
} };
var host = new MicroserviceHost(contextMock.Object, listeners, new List <MicroserviceCommandListener>(), queue, logger.Object);
host.Start();
host.Pause();
// Act
host.Resume();
// Assert
Assert.AreEqual(false, host.IsPaused);
}
public void CreateListenerIsCalledOnce(int listenerAmount)
{
// Arrange
var contextMock = new Mock <IBusContext <IConnection> >();
var receiverMock = new Mock <IMessageReceiver>();
var logger = new Mock <ILogger <MicroserviceHost> >();
contextMock.Setup(e => e.CreateMessageReceiver(It.IsAny <string>(), It.IsAny <IEnumerable <string> >()))
.Returns(receiverMock.Object);
var listeners = Enumerable.Range(0, listenerAmount).Select(e => new MicroserviceListener());
var host = new MicroserviceHost(contextMock.Object, listeners, new List <MicroserviceCommandListener>(), "test.queue", logger.Object);
// Act
host.Start();
// Assert
contextMock.Verify(e => e.CreateMessageReceiver(It.IsAny <string>(), It.IsAny <IEnumerable <string> >()), Times.Once);
}
public void ResumingTriggersHostResumedEventWithProperValues()
{
// Arrange
var contextMock = new Mock <IBusContext <IConnection> >();
var receiverMock = new Mock <IMessageReceiver>();
var logger = new Mock <ILogger <MicroserviceHost> >();
const string queue = "testQueue";
string[] topics = { "Topic1", "Topic2" };
contextMock.Setup(e => e.CreateMessageReceiver(queue, topics))
.Returns(receiverMock.Object);
var listeners = new[] { new MicroserviceListener {
TopicExpressions = topics
} };
var host = new MicroserviceHost(contextMock.Object, listeners, new List <MicroserviceCommandListener>(), queue, logger.Object);
host.Start();
host.Pause();
IMicroserviceHost resultHost = null;
HostResumedEventArgs eventArgs = null;
host.HostResumed += (microserviceHost, args) =>
{
resultHost = microserviceHost;
eventArgs = args;
};
// Act
host.Resume();
// Assert
Assert.AreEqual(host, resultHost);
Assert.IsNotNull(eventArgs);
}
public void CreateListenerIsCalledWithProperParameters(string queueName, string topics)
{
// Arrange
var contextMock = new Mock <IBusContext <IConnection> >();
var receiverMock = new Mock <IMessageReceiver>();
var logger = new Mock <ILogger <MicroserviceHost> >();
string[] topicNames = topics.Split(',');
contextMock.Setup(e => e.CreateMessageReceiver(queueName, topicNames))
.Returns(receiverMock.Object);
var listeners = new[] { new MicroserviceListener {
TopicExpressions = topicNames
} };
var host = new MicroserviceHost(contextMock.Object, listeners, new List <MicroserviceCommandListener>(), queueName, logger.Object);
// Act
host.Start();
// Assert
contextMock.Verify(e => e.CreateMessageReceiver(queueName, topicNames));
}
