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Testing Devise Delegator Authentication Handling in heartcombo/devise

This test suite evaluates the Devise Delegator functionality, specifically focusing on failure app handling and scope management. It ensures proper delegation behavior across different authentication scenarios and environment configurations.

Test Coverage Overview

The test suite provides comprehensive coverage of the Devise::Delegator class functionality, particularly its failure_app behavior.

Key areas tested include:

Default failure app handling with empty environment
Failure app behavior with empty warden options
Scope-based failure app delegation

Implementation Analysis

The testing approach employs ActiveSupport::TestCase for unit testing the Delegator class. It uses a methodical pattern of testing increasingly complex scenarios, from basic empty environment cases to specific scope handling.

The implementation leverages Ruby’s object-oriented features and Devise’s authentication framework specifics.

Technical Details

Testing tools and configuration:

MiniTest framework integration
ActiveSupport::TestCase as the base test class
Devise::Delegator test helper method
Warden environment simulation through hash structures

Best Practices Demonstrated

The test suite exemplifies several testing best practices including isolated test cases, clear test naming conventions, and proper assertion usage.

Notable practices include:

Single responsibility principle in test methods
Progressive complexity in test scenarios
Explicit environment state management
Type-specific assertions (assert_equal, assert_kind_of)

heartcombo/devise

test/delegator_test.rb

            
# frozen_string_literal: true

require 'test_helper'

class DelegatorTest < ActiveSupport::TestCase
  def delegator
    Devise::Delegator.new
  end

  test 'failure_app returns default failure app if no warden options in env' do
    assert_equal Devise::FailureApp, delegator.failure_app({})
  end

  test 'failure_app returns default failure app if no scope in warden options' do
    assert_equal Devise::FailureApp, delegator.failure_app({"warden.options" => {}})
  end

  test 'failure_app returns associated failure app by scope in the given environment' do
    assert_kind_of Proc, delegator.failure_app({"warden.options" => {scope: "manager"}})
  end
end