CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-4rspecshouldarspec3
Javid Jamae
Javid Jamae

Reputation: 9009

Testing has_many with shoulda-matchers using rspec3

I'm trying to use rspec3 for the first time with a new app. I've defined two simple models:

class Match < ActiveRecord::Base
end

class Article < ActiveRecord::Base
  has_many :matches
end

When I access these models from the console, I can create the associations and store them in the DB as expected. But, when I try to run a spec to test this, it doesn't seem to work:

require 'spec_helper'

describe Article do
   it { is_expected.to have_many(:matches) }
   # it { should have_many(:matches) }
end

I tried running both the isexpected version and the should version of the test, but in both cases, I get the following error:

> ./bin/rspec spec/models/article_spec.rb
Warning: Running `gem pristine --all` to regenerate your installed gemspecs (and deleting then reinstalling your bundle if you use bundle --path) will improve the startup performance of Spring.
F

Failures:

  1) Article should have many :matches
     Failure/Error: it { is_expected.to have_many :matches }
       expected #<Article:0x007fa14c276f38> to respond to `has_many?`
     # ./spec/models/article_spec.rb:4:in `block (2 levels) in <top (required)>'
     # -e:1:in `<main>'

Finished in 0.09484 seconds (files took 0.63853 seconds to load)
1 example, 1 failure

Failed examples:

rspec ./spec/models/article_spec.rb:4 # Article should have many :matches

Randomized with seed 24636

Here are the relevant dependencies in Gemfile.lock:

rspec-core (3.0.4)
  rspec-support (~> 3.0.0)
rspec-expectations (3.0.4)
  rspec-support (~> 3.0.0)
rspec-mocks (3.0.4)
  rspec-support (~> 3.0.0)
rspec-rails (3.0.2)
  rspec-core (~> 3.0.0)
  rspec-expectations (~> 3.0.0)
  rspec-mocks (~> 3.0.0)
  rspec-support (~> 3.0.0)
rspec-support (3.0.4)
spring-commands-rspec (1.0.2)
rspec-rails (~> 3.0.0)
spring-commands-rspec
...
  shoulda-matchers (2.7.0)
shoulda-matchers

It seems like it should be pretty straight forward. Am I doing something wrong that's causing me to get this error?

Upvotes: 3

Views: 2216

Answers (2)

Peter
Peter

Reputation: 447

I'm not sure what the root cause is but I just got the same problem - with both bin/rspec and rspec. I managed to get it working for rspec, but not bin/rspec.

I had to add require 'shoulda/matchers' to the spec file as well as rails_helper.rb to get the test to pass. This passed once, after which I could remove it from the spec file and the test passed. Strange and un-satisfactory fix.

Upvotes: 0

zetetic
zetetic

Reputation: 47548

This is due to running the binstub created when installing Spring:

./bin/rspec spec/models/article_spec.rb

Apparently this does not work quite the same way as running the executable installed by RSpec, which is simply:

rspec spec/models/article_spec.rb

Upvotes: 2

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