Remove Rails 4.2 support

.github/workflows/ci.yml

@@ -22,7 +22,6 @@ jobs:
         ruby:
           - 2.7.7
         appraisal:
-          - rails_4_2
           - rails_5_0
           - rails_5_1
           - rails_5_2
@@ -32,7 +31,6 @@ jobs:
           - test_unit
         exclude:
           - { ruby: 2.7.7, appraisal: rails_5_0 }
-          - { ruby: 2.7.7, appraisal: rails_4_2 }
     env:
       BUNDLE_GEMFILE: gemfiles/${{ matrix.appraisal }}.gemfile
       TEST_FRAMEWORK: ${{ matrix.test_framework }}

Appraisals

@@ -22,25 +22,6 @@ shared_dependencies = proc do
   instance_eval(&shared_test_dependencies)
 end
 
-appraise "rails_4_2" do
-  instance_eval(&shared_dependencies)
-
-  gem "rails", "~> 4.2.10"
-  gem "sass-rails", "~> 5.0"
-  gem "uglifier", ">= 1.3.0"
-  gem "coffee-rails", "~> 4.1.0"
-  gem "jquery-rails"
-  gem "turbolinks"
-  gem "jbuilder", "~> 2.0"
-  gem "sdoc", "~> 0.4.0", group: :doc
-  gem "bcrypt", "~> 3.1.7"
-
-  # Other dependencies we use
-  gem "activeresource", "4.0.0"
-  gem "json", "~> 1.4"
-  gem "protected_attributes", "~> 1.0.6"
-end
-
 appraise "rails_5_0" do
   instance_eval(&shared_dependencies)
 

README.md

@@ -161,7 +161,7 @@ may be of use:
 
 ## Compatibility
 
-Shoulda Context is [tested][travis] and supported against Ruby 2.7+, Rails 4.2+,
+Shoulda Context is [tested][travis] and supported against Ruby 2.7+, Rails 5.0+,
 Minitest 4.x, and Test::Unit 3.x.
 
 ## Versioning

test/shoulda/test_framework_detection_test.rb

@@ -20,12 +20,6 @@ class TestFrameworkDetectionTest < PARENT_TEST_CASE
     end
   end
 
-  if Tests::CurrentBundle.instance.current_appraisal == "rails_4_2"
-    should "detect ActiveSupport::TestCase and Minitest 4.x w/ Rails 4.2" do
-      assert_integration_with_rails_and "Minitest::Test"
-    end
-  end
-
   if TEST_FRAMEWORK == "minitest"
     should "detect Minitest 5.x when it is loaded standalone" do
       assert_integration_with "Minitest::Test", setup: <<-RUBY