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Posted June 23, 2013 7:14am by

Errors in "Testing Friendships"

I'm getting errors when I shouldn't. Getting the following errors: 1) Error: test: UserFriendship should belong to friend. (UserFriendshipTest): ArgumentError: assertion message must be String or Proc, but NilClass was given.

This is after adding "belongs_to :friend" in the user_friendship model.

Any ideas or help?

2 Answers

June 25, 2013 3:58pm

@Brandon Barrette it looks like it's a problem with the updated version of the shoulda gem. Open up your Gemfile and change the following line:

gem 'shoulda'

To:

gem 'shoulda', '3.3.2'

Then run bundle and your tests should pass. Except for the user_test which has a typo on line 4 (should have_many(:user_friendships) :)

June 25, 2013 5:28pm

Thank you Jason Seifer! My test passed now! And thanks for catching my typo! These happen all too often!

June 24, 2013 2:45pm

Hey @Brandon Barrette can you paste your error message, userfriendship class, and the test that is failing here?

June 25, 2013 5:41am

Here's the errors:

Finished tests in 0.430257s, 6.9726 tests/s, 2.3242 assertions/s.

1) Error: test: UserFriendship should belong to friend. (UserFriendshipTest): ArgumentError: assertion message must be String or Proc, but NilClass was given. /usr/local/rvm/gems/ruby-1.9.3-p392/gems/shoulda-context-1.1.3/lib/shoulda/context/assertions.rb:89:in safe_assert_block' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/shoulda-context-1.1.3/lib/shoulda/context/assertions.rb:55:inassert_accepts' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/shoulda-context-1.1.3/lib/shoulda/context/context.rb:339:in block in should' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/shoulda-context-1.1.3/lib/shoulda/context/context.rb:400:incall' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/shoulda-context-1.1.3/lib/shoulda/context/context.rb:400:in block in create_test_from_should_hash' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.12/lib/active_support/testing/setup_and_teardown.rb:36:inblock in run' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.12/lib/active_support/callbacks.rb:425:in _run__1916967253025563626__setup__4395528327017246691__callbacks' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.12/lib/active_support/callbacks.rb:405:in__run_callback' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.12/lib/active_support/callbacks.rb:385:in _run_setup_callbacks' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.12/lib/active_support/callbacks.rb:81:inrun_callbacks' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.12/lib/active_support/testing/setup_and_teardown.rb:35:in `run'

2) Error: test: UserFriendship should belong to user. (UserFriendshipTest): ArgumentError: assertion message must be String or Proc, but NilClass was given. /usr/local/rvm/gems/ruby-1.9.3-p392/gems/shoulda-context-1.1.3/lib/shoulda/context/assertions.rb:89:in safe_assert_block' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/shoulda-context-1.1.3/lib/shoulda/context/assertions.rb:55:inassert_accepts' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/shoulda-context-1.1.3/lib/shoulda/context/context.rb:339:in block in should' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/shoulda-context-1.1.3/lib/shoulda/context/context.rb:400:incall' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/shoulda-context-1.1.3/lib/shoulda/context/context.rb:400:in block in create_test_from_should_hash' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.12/lib/active_support/testing/setup_and_teardown.rb:36:inblock in run' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.12/lib/active_support/callbacks.rb:425:in _run__1916967253025563626__setup__4395528327017246691__callbacks' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.12/lib/active_support/callbacks.rb:405:in__run_callback' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.12/lib/active_support/callbacks.rb:385:in _run_setup_callbacks' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.12/lib/active_support/callbacks.rb:81:inrun_callbacks' /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.12/lib/active_support/testing/setup_and_teardown.rb:35:in `run'

3 tests, 1 assertions, 0 failures, 2 errors, 0 skips

and here's the user_friendship class

class UserFriendship < ActiveRecord::Base
  belongs_to :user
  belongs_to :friend, class_name: 'User', foreign_key: 'friend_id'

  attr_accessible :user, :friend
end

and user_friendship_test.rb

require 'test_helper'

class UserFriendshipTest < ActiveSupport::TestCase
  should belong_to(:user)
  should belong_to(:friend)


  test "that creating a friendship works without raising an exception" do 
    assert_nothing_raised do
        UserFriendship.create user: users(:brandon), friend: users(:mike)
   end
  end
end

Thanks for any help!

June 25, 2013 3:33pm

Thanks for pasting this. I'm afraid I can't determine the problem from this output, though. Can you zip up your project and email it to help@teamtreehouse.com or paste a link to your project on GitHub here?

June 25, 2013 3:44pm

Here's the link, just committed with these errors so it's the most up to date. Thanks for your help!

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