Fix Rails 7.1 compatibility issues - Phase 2

- Update mocha from 2.0.2 to 2.8.0 for Rails 7.1 Minitest compatibility
- Fix Rails 7.1 deprecation warnings in test environment:
  - Update static file server config to use public_file_server
  - Change show_exceptions from boolean to symbol (:none)
  - Set secret_key_base directly to avoid secrets.yml deprecation
- Fix require_relative paths for rails_generator_runtime in test files

Tests now run successfully with most passing. Ready for Phase 3.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: lizkenyon

Gemfile.lock

@@ -144,7 +144,7 @@ GEM
     method_source (1.0.0)
     mini_mime (1.1.5)
     minitest (5.26.1)
-    mocha (2.0.2)
+    mocha (2.8.0)
       ruby2_keywords (>= 0.0.5)
     multi_xml (0.6.0)
     mutex_m (0.3.0)
@@ -321,7 +321,7 @@ DEPENDENCIES
   csv
   jwt (>= 2.2.3)
   minitest
-  mocha
+  mocha (>= 2.1.0)
   mutex_m
   pry
   pry-nav

shopify_app.gemspec

@@ -23,7 +23,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency("csv")
   s.add_development_dependency("jwt", ">= 2.2.3")
   s.add_development_dependency("minitest")
-  s.add_development_dependency("mocha")
+  s.add_development_dependency("mocha", ">= 2.1.0")
   s.add_development_dependency("mutex_m")
   s.add_development_dependency("pry")
   s.add_development_dependency("pry-nav")

test/dummy/config/environments/test.rb

@@ -15,15 +15,17 @@
   config.eager_load = false
 
   # Configure static file server for tests with Cache-Control for performance.
-  config.serve_static_files   = true
-  config.static_cache_control = "public, max-age=3600"
+  config.public_file_server.enabled = true
+  config.public_file_server.headers = {
+    "Cache-Control" => "public, max-age=3600"
+  }
 
   # Show full error reports and disable caching.
   config.consider_all_requests_local       = true
   config.action_controller.perform_caching = false
 
   # Raise exceptions instead of rendering exception templates.
-  config.action_dispatch.show_exceptions = false
+  config.action_dispatch.show_exceptions = :none
 
   # Disable request forgery protection in test environment.
   config.action_controller.allow_forgery_protection = false
@@ -41,4 +43,8 @@
 
   # Raises error for missing translations
   # config.action_view.raise_on_missing_translations = true
+
+  # Set secret_key_base directly to avoid deprecation warning
+  # This is acceptable for a test dummy app in a gem
+  config.secret_key_base = "test-secret-key-base-for-dummy-app-testing-only"
 end

test/generators/home_controller_generator_with_execution_test.rb

@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
-require "test_helper"
-require "utils/rails_generator_runtime"
-require "generators/shopify_app/home_controller/home_controller_generator"
-require "generators/shopify_app/authenticated_controller/authenticated_controller_generator"
-require "dummy/app/controllers/application_controller"
+require_relative "../test_helper"
+require_relative "../utils/rails_generator_runtime"
+require_relative "../../lib/generators/shopify_app/home_controller/home_controller_generator"
+require_relative "../../lib/generators/shopify_app/authenticated_controller/authenticated_controller_generator"
+require_relative "../dummy/app/controllers/application_controller"
 
 class HomeControllerGeneratorWithExecutionTest < ActiveSupport::TestCase
   test "generates authenticated HomeController class if not embedded" do

test/generators/products_controller_generator_with_execution_test.rb

@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
-require "test_helper"
-require "utils/rails_generator_runtime"
-require "generators/shopify_app/products_controller/products_controller_generator"
-require "generators/shopify_app/authenticated_controller/authenticated_controller_generator"
-require "dummy/app/controllers/application_controller"
+require_relative "../test_helper"
+require_relative "../utils/rails_generator_runtime"
+require_relative "../../lib/generators/shopify_app/products_controller/products_controller_generator"
+require_relative "../../lib/generators/shopify_app/authenticated_controller/authenticated_controller_generator"
+require_relative "../dummy/app/controllers/application_controller"
 
 class ProductsControllerGeneratorWithExecutionTest < ActiveSupport::TestCase
   test "generates valid ProductController class" do