Rails 5 Test Prescriptions

Adapter Tests

The adapter tests work between the adapter and the server, using VCR as a medium:

external/02/spec/models/avatar_adapter_spec.rb

require "rails_helper"

describe AvatarAdapter do

  it "accurately receives image url", :vcr do
    user = instance_double(User, twitter_handle: "noelrap")
    adapter = AvatarAdapter.new(user)
    url = "http://pbs.twimg.com/profile_images/40008602/head_shot_bigger.jpg"
    expect(adapter.image_url).to eq(url)
  end

end

This test has no dependency on the client, which is shown passing in a double rather than an actual User instance. Using a VCR cassette, you create a new adapter and assert that the adapter provides the expected URL when queried. The test also doesn’t have a particular ...