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Testing Polymorphic Issue Controller Implementation in maybe-finance

This test suite validates the Issues Controller functionality in a Ruby on Rails application, focusing on polymorphic issue display and user authentication. The tests ensure proper rendering of issue details and verify access control mechanisms for family administrators.

Test Coverage Overview

The test suite provides coverage for the Issues Controller’s show action with polymorphic relationships.

Key areas tested include:

User authentication via family admin role
Polymorphic issue display functionality
Response status verification
DOM element presence and content validation

Implementation Analysis

The testing approach utilizes ActionDispatch::IntegrationTest for comprehensive controller testing, incorporating authentication setup and DOM assertions. The implementation leverages Rails’ built-in testing patterns with fixture data and polymorphic associations to validate multiple issue types.

Technical patterns include:

Setup blocks for authentication context
Iteration over issue collections
DOM-based assertions for UI elements

Technical Details

Testing tools and configuration:

Minitest framework
ActionDispatch integration testing
Rails fixture system
DOM assertion helpers
Authentication helpers (sign_in)

Best Practices Demonstrated

The test suite demonstrates several testing best practices in Rails applications. It properly isolates the authentication context, uses appropriate assertion methods for response validation, and implements thorough UI element checking.

Notable practices include:

Proper test setup and authentication handling
Comprehensive DOM element verification
Efficient iteration over test cases
Clear test organization and structure

maybe-finance/maybe

test/controllers/issues_controller_test.rb

            
require "test_helper"

class IssuesControllerTest < ActionDispatch::IntegrationTest
  setup do
    sign_in users(:family_admin)
  end

  test "should get show polymorphically" do
    issues.each do |issue|
      get issue_url(issue)
      assert_response :success
      assert_dom "h2", text: issue.title
      assert_dom "h3", text: "Issue Description"
      assert_dom "h3", text: "How to fix this issue"
    end
  end
end