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Ruby

Posted by Damian Sieczkowski
Damian Sieczkowski
9,730 Points

Test that a class method is called is called using Rspec

I have an after_update callback that is meant to call a class method in another model if certain conditions are met. How can I test that it is actually called during an update?

3 Answers

Kyle Daugherty
Kyle Daugherty
16,441 Points

Yeah, respond_to will just test that the method exists. You want something like:

expect(notification).to receive(:twilio_text_invite).with(arg_name)

You can also add additional constraints like specifying how many times you expect the message to be received.

Kyle Daugherty
Kyle Daugherty
16,441 Points
Kyle Daugherty
Kyle Daugherty
16,441 Points

Take a look at the message expectations section here:

RSpec docs

There's also an example on stackoverflow. Keep in mind the top voted answer uses RSpec v2 and it's changed for RSpec v3.

Damian Sieczkowski
Damian Sieczkowski
9,730 Points
Damian Sieczkowski
Damian Sieczkowski
9,730 Points

Thanks, I ended up going with 

expect(Notification).to respond_to(:twilio_text_invite).with(1).argument

But the way I understand it - that only tests the method exists - not that the method I'm testing is calling to it. Correct?