--- title: Job specs for rspec with Ruby on Rails slug: job-specs-for-rspec-with-ruby-on-rails published_at: 2021-07-14 13:00:14 +0000 updated_at: 2026-03-04 20:14:04 +0000 summary: description: #rails #rubyonrails tags: [job specs, rspec specs for jobs, rails tutorial] views: 3767 author: CJ Avilla url: https://www.cjav.dev/videos/job-specs-for-rspec-with-ruby-on-rails youtube_url: https://www.youtube.com/watch?v=cllR3jpQ0pc youtube_id: cllR3jpQ0pc embed_url: https://www.youtube.com/embed/cllR3jpQ0pc thumbnail_url: https://i.ytimg.com/vi/cllR3jpQ0pc/hqdefault.jpg type: video --- # Job specs for rspec with Ruby on Rails *Published: July 14, 2021* *Views: 3767* ## Watch [Watch on YouTube](https://www.youtube.com/watch?v=cllR3jpQ0pc) [![Job specs for rspec with Ruby on Rails](https://i.ytimg.com/vi/cllR3jpQ0pc/hqdefault.jpg)](https://www.youtube.com/watch?v=cllR3jpQ0pc) ## Description #rails #rubyonrails ## Transcript hey what's up welcome back in previous episodes we're talking about testing again in this episode we're going to do some more testing and this time we're going to talk about testing our jobs so we have uh we started with model and sort of just this very isolated test from simple methods and models we're going to step up one level now and do some testing for some of our jobs so if we jump into our app models directory here we have this user model that is a device user model and you'll notice that one of the things that we added was that after this user is saved so after commit we want to call this create stripe customer callback and that is going to kick off a job to create a stripe customer later that is related to this user and so one of the methods that we might want to test as part of testing our user but even more specifically testing this job is that when this user is saved the job is actually like in queued and we could make other assertions about where the job is actually like set up is it enqueued as default or whatever we could probably test this in isolation so just testing like oh does perform later actually enqueue the job and set it up where we want um so let's let's actually do that so in the user model let's say um it enqueues uh a or the create stripe customer job do and and i think we can say something like this we want to expect that create user to have enqueued the job uh create stripe customer job okay so i believe we want to this is kind of like the rough place that we want to start is that when this user is created that active record callback is executed and accused that job and so the very first error that we get is saying that the active job matchers need to be set up so in the same way that we set up a cue adapter in development and in production mode specifying that we wanted to use like rescue for our queue adapter backend we need to do the same thing in test mode and we're going to set the queue adapter to test so in the environments test rb uh like environment configuration at the very bottom i'm gonna say config dot active job dot cue adapter cue adapter is equal to this symbol test now what this will do is it'll say that when we're running tests use the test queue adapter and i believe that should work so let's run this again and okay factory is not registered user so we haven't actually like created a user factory so let's say rails g r spec model for the user model and this will create the i guess we already had a user spec but let's just override it because we were just kind of messing around in there we'll also create a factory for our users factory and that's the piece that was missing was it it didn't have a user factory so let's open up the user factory here and look at the user model and the user model is going to have some required fields so the password and i believe the email address are not null so we need to have some way to set those so let's say we're going to say email and this is going to be let's say sequence email and we're going to say we're going to return hello plus a number at cjav.dev and that will be our email and then our password can just be like secure random.hex or something like that so that we have a test password all right let's go back to our our user test here i thought that we had written a oh you know what yeah our spec is now borked because we we blew it away so it um enqueues the stripe customer create job um on commit do and okay then we're gonna go back to the user model here and this is again the method that we're testing here at the bottom and we're gonna say expect that create for user dot to have enqueued job this create stripe customer job we'll run this so just creating the user model as soon as it's committed to the database it shouldn't cue that job so that looks like it's passing again let's comment out the code since this is legacy code we want to comment it out and we'll comment it back in as we go and it says it expected it to enqueue it it did not enqueue so that's the failure and then we can comment back in and watch it pass and now we are successfully passing that uh that first test all right so one thing that okay so this is this is kind of handy whatever like but in practice we probably want a a spec specific to the job so let's do that so rails g r spec job for the um i think it's stripe customer create is the name of the job so this should create a job spec for us for this job now if we come over here we can we can say something like let's actually look at the let's look at the job itself stripe customer oh create stripe customer job so i did it wrong so create stripe customer job and we'll want to change the name of this to the create stripe customer job and okay create stripe customer job spec um oh i spelled customer wrong customer uh okay so now i can tell that it's named correctly because i'm able to use the colon a command that's part of our the rspec rails vim plugin and that jumps me between the job and its test and so here we can see that like in the test itself when we perform this test it's expecting the user id for the user that was just saved we're going to look the user up and then we're going to perform this action on the user so we want to say like it like creates a stripe customer and saves its id to the user now in practice we don't actually want to hit the stripe api so there's a couple different options for solving this number one we could use a combination of a couple different tools vcr and webmock that is one alternative another way is to use sort of stubbing or we can stub out this class so that instead of actually making the api call we can sort of put fake methods onto this class so that we we rather than actually like using the underlying stripe ruby client library we're just going to make our own return value for create and that's what we're going to do today so i'm going to say in in order for this method to run we want us we want to allow stripe customer to receive the create method and then we're going to return our own thing so i'm going to say um allow stripe customer to receive create and return and then we're going to give it an object to return and in some cases you could put like a mock in here or a dummy object in this case i know that i can just initialize an instance of the stripe customer and pass in a specific id that i want to use down below so in this case i'm going to say cuss test that will be the id of the striped customer that's returned and we want to set we want to set up this like allow block at the very beginning and this is going to stub out this class meaning like it's going to kind of replace the create method on the stripe customer class of like the strat like the of the the class that's returned by the underlying stripe ruby client library so that we're like replacing that create method with our own method that is going to be defined as like something that returns this so that we don't actually hit the api but instead we're going to return a new instance of a stripe customer that'll be stored in this variable and then used over here when we are updating with this customer's id all right so now that we have stubbed out the stripe customer method let's also make our exercise so we've kind of done the setup piece here that is doing the like the setup for our test then we need to do exercise and then finally we want to make some assertions so our exercise is going to be something like this we're going to expect we can pass a block to expect that will run and then we can make assertions about what happened inside that block so we're going to say um let's do create stripe customer job.perform dot perform later we're going to pass in a user's id so we need to create that user so user equals create user and we want to say that this we expect this to uh have enqueued the job create stripe customers job and now that is actually like the stuff that's inside of the block that's our exercise and then the expectation around it is is also our assertion um all right so this is ensuring that that the job is actually being enqueued let's also make another test here that we will use to actually run the job and we want to make assertions about that um so it this this doesn't actually create the stripe customer and save its id this is like this uh enqueues the job as expected and then this one will actually create the stripe customer we want to remove the wrapper around that that expectation and then switch this to perform now and now what we need to do is we actually need to refetch the user from the database after this change happens to the user object so we can say expect that the user.stripe customer id to equal test however this should fail because the customer is not actually uh or this user object here is the same user the same variable reference to the object that we created above and it has not been updated to represent the changes that happen inside of the job so before we run this expectation or the assertion down here we need to also reload the user so when you say user.reload and that should refetch all the data out of the database that was modified as part of the job and so now we have a passing test we want to actually go back over to our to our implementation comment all of this out and then execute this again and watch it fail and then we can comment it back in and we will notice that this still fails because it is expecting that the user is refreshed from the database and this is i'm sorry that the user is actually updated so now we're updating the user with that last line in our job and now we have pretty good coverage for this specific job so in this episode we learned about stubbing out this striped customer object we also learned about enqueuing those jobs and saying that it has an enqueue job in the next episode we'll make some more assertions about different things in some more isolated tests for some plain old ruby objects that we have for interacting with an api so stick around for that one if you're curious 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