Mocking ConnectionFactory

[Ben Joyce]

Hello.

I'm working with RabbitMQ in the .NET environment, using the classic RabbitMQ Client, and have run in to some trouble related to unit testing/mocking the ConnectionFactory.

ConnectionFactory doesn't derive from any interface which makes it a bit hard to mock as there doesn't seem to be a way to call CreateConnection without it actually trying to create an actual connection to the host.

Anyone been here and found a solution?  All I can do at the moment is to provide a mock of IConnection instead, meaning I have to new-up the connection outside of my class, injecting it via the constructor... I'd rather just have to provide a mock of ConnectionManager instead and let that provide the child objects (Connection, and then Model).

Hope that makes sense.  Any thoughts appreciated.

Ben

[Michael Klishin]

Ben,

Yes, currently that's the optimal way. We can introduce an interface for connection factory in 3.4.0.

MK

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[Ben Joyce]

Hi Michael.

Ok, thanks for getting back so quick and confirming the functionality/best practice.

Looking forward to 3.4.0 :)

Cheers,

Ben

[Michael Klishin]

 On 7 August 2014 at 14:27:25, Ben Joyce (ben....@gmail.com) wrote:
> > Looking forward to 3.4.0 :)

Ben,

I've started putting together an interface and so far it has just
1 method:

IConnection CreateConnection();

I'll change some ConnectionFactory public fields to be properties (an appropriate
change for 3.4.0) and then what else may be required by the few library parts
that accept ConnectionFactory.

Anything else you'd like to see in the API?
--
MK

Staff Software Engineer, Pivotal/RabbitMQ

[Michael Klishin]

On 7 August 2014 at 16:25:59, Michael Klishin (mic...@rabbitmq.com) wrote:
> > I've started putting together an interface

and here's what I ended up with:

http://hg.rabbitmq.com/rabbitmq-dotnet-client/rev/f240e2ddaa26 

[Ben Joyce]

Hi Michael.  Again thanks for the speedy reply.

What you suggest sounds fine, at least for what I want to do in my unit testing.

Can't think of anything else at the mo.

Ben

[Ben Joyce]

Great!

If you want me to test the interface let me know.

Ben

[Michael Klishin]

On 9 August 2014 at 00:30:43, Ben Joyce (ben....@gmail.com) wrote:
> > If you want me to test the interface let me know.

That'd be helpful. Should be in the nightly builds already:
https://www.rabbitmq.com/nightly-builds.html