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Testing ActionCable Connection Authentication in Maybe Finance

This test suite focuses on validating the WebSocket connection handling in the Maybe Finance application using ActionCable. It provides a foundation for testing user authentication and connection management through cookies in a Rails WebSocket implementation.

Test Coverage Overview

The test coverage examines WebSocket connection authentication using signed cookies in ActionCable. Key functionality includes:

User authentication verification through signed cookies
Connection establishment validation
User ID propagation testing

Implementation Analysis

The testing approach utilizes ActionCable’s TestCase framework to simulate WebSocket connections. It implements a structured pattern for testing connection authentication by:

Mocking signed cookie data
Validating connection establishment
Asserting correct user identification

Technical Details

Testing infrastructure includes:

ActionCable::Connection::TestCase framework
Minitest assertions
Rails cookie signing mechanism
WebSocket connection simulation tools

Best Practices Demonstrated

The test suite exemplifies several testing best practices:

Isolation of connection authentication logic
Clear test case structure
Proper use of ActionCable test helpers
Focused test scope for connection handling

maybe-finance/maybe

test/channels/application_cable/connection_test.rb

            
require "test_helper"

module ApplicationCable
  class ConnectionTest < ActionCable::Connection::TestCase
    # test "connects with cookies" do
    #   cookies.signed[:user_id] = 42
    #
    #   connect
    #
    #   assert_equal connection.user_id, "42"
    # end
  end
end