public void GetChannel_Throws_KeyNotFoundException_If_Channel_Is_Not_Registered()
{
const string notRegisteredChannelId = nameof(notRegisteredChannelId);
var mockMessageChannel = new Mock<IMessageChannel>();
IMessageChannel MessageBusFactory(string channelId) => mockMessageChannel.Object;
var messageBus = new MessageBus(MessageBusFactory);
Assert.Throws<KeyNotFoundException>(() => messageBus.GetChannel(null));
Assert.Throws<KeyNotFoundException>(() => messageBus.GetChannel(string.Empty));
Assert.Throws<KeyNotFoundException>(() => messageBus.GetChannel(notRegisteredChannelId));
}
public void GetChannel_Returns_Registerd_Channel()
{
const string registeredChannelId = nameof(registeredChannelId);
var mockMessageChannel = new Mock<IMessageChannel>();
IMessageChannel MessageBusFactory(string channelId) => mockMessageChannel.Object;
var messageBus = new MessageBus(MessageBusFactory);
messageBus.RegisterChannel(registeredChannelId);
Assert.Equal(mockMessageChannel.Object, messageBus.GetChannel(registeredChannelId));
}