```ruby
require 'rails_helper'
require "#{Rails.root}/lib/wiki_edits"

describe WikiEdits do
  describe '.notify_untrained' do
    pending 'should post messages to Wikipedia talk pages'
  end

  describe '.tokens' do
    it 'should get edit tokens using OAuth credentials' do
      user = create(:user,
                    wiki_token: 'foo',
                    wiki_secret: 'bar')

      # rubocop:disable Metrics/LineLength
      fake_tokens = "{\"query\":{\"tokens\":{\"csrftoken\":\"myfaketoken+\\\\\"}}}"
      # rubocop:enable Metrics/LineLength
      stub_request(:get, /.*/)
        .to_return(status: 200, body: fake_tokens, headers: {})
      response = WikiEdits.tokens(user)
      expect(response).to be
    end
  end

  describe '.api_get' do
    pending 'should send data and tokens to Wikipedia'
  end
end
```

Extend WikiEdits test to superficially cover the entire class.
user
```ruby
require 'rails_helper'
require "#{Rails.root}/lib/wiki_edits"

describe WikiEdits do
  # We're not testing any of the network stuff, nor whether the requests are
  # well-formatted, but at least this verifies that the flow is parsing tokens
  # in the expected way.
  describe '.notify_untrained' do
    it 'should post talk page messages on Wikipedia' do
      create(:course,
             id: 1)
      create(:user,
             id: 1,
             wiki_token: 'foo',
             wiki_secret: 'bar')
      create(:user,
             id: 2,
             wiki_token: 'foo',
             wiki_secret: 'bar')
      create(:courses_user,
             course_id: 1,
             user_id: 1)
      create(:courses_user,
             course_id: 1,
             user_id: 2)
      # rubocop:disable Metrics/LineLength
      fake_tokens = "{\"query\":{\"tokens\":{\"csrftoken\":\"myfaketoken+\\\\\"}}}"
      # rubocop:enable Metrics/LineLength
      stub_request(:get, /.*wikipedia.*/)
        .to_return(status: 200, body: fake_tokens, headers: {})
      stub_request(:post, /.*wikipedia.*/)
        .to_return(status: 200, body: 'success', headers: {})
      WikiEdits.notify_untrained(1, User.first)
    end
  end
end
```
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