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Testing Devise Helper Methods Integration in heartcombo/devise

This test suite validates the integration of Devise helper methods within API controllers, specifically focusing on controller helpers and authentication functionality. It ensures proper inclusion of helper methods while maintaining API controller simplicity.

Test Coverage Overview

The test suite provides comprehensive coverage of Devise helper methods integration in API controllers.

Key areas tested include:

Proper inclusion of Devise::Controllers::Helpers module
Absence of unnecessary helper methods in API context
Availability of essential authentication helpers like current_user

Implementation Analysis

The testing approach utilizes Minitest framework with Devise’s custom ControllerTestCase class for controller testing. The implementation focuses on verifying module inclusion and method availability through assertion-based testing, specifically targeting the Metal controller context for API implementations.

Technical Details

Testing tools and configuration:

Minitest as the testing framework
Devise::ControllerTestCase for controller testing
ActionController::Metal as base controller
Custom ApiController implementation

Best Practices Demonstrated

The test suite demonstrates several testing best practices including isolation of API controller concerns, explicit verification of module inclusion, and targeted testing of helper method availability. The code organization follows a clear pattern of setup, inclusion testing, and functionality verification.

heartcombo/devise

test/controllers/helper_methods_test.rb

            
# frozen_string_literal: true

require 'test_helper'

class ApiController < ActionController::Metal
  include Devise::Controllers::Helpers
end

class HelperMethodsTest < Devise::ControllerTestCase
  tests ApiController

  test 'includes Devise::Controllers::Helpers' do
    assert_includes @controller.class.ancestors, Devise::Controllers::Helpers
  end

  test 'does not respond_to helper or helper_method' do
    assert_not_respond_to @controller.class, :helper
    assert_not_respond_to @controller.class, :helper_method
  end

  test 'defines methods like current_user' do
    assert_respond_to @controller, :current_user
  end
end