adds --skip-listen to the application generator [closes #23590]

1 files changed, 27 insertions, 6 deletions

diff --git a/railties/test/generators/app_generator_test.rb b/railties/test/generators/app_generator_test.rb
index be05e779ea..921a5b36b5 100644
--- a/railties/test/generators/app_generator_test.rb
+++ b/railties/test/generators/app_generator_test.rb
@@ -479,18 +479,20 @@ class AppGeneratorTest < Rails::Generators::TestCase
     end
   end
 
-  def test_inclusion_of_listen_related_gems
+  def test_inclusion_of_listen_related_configuration_by_default
     run_generator
     if RbConfig::CONFIG['host_os'] =~ /darwin|linux/
-      assert_gem 'listen'
-      assert_gem 'spring-watcher-listen'
+      assert_listen_related_configuration
     else
-      assert_file 'Gemfile' do |content|
-        assert_no_match(/listen/, content)
-      end
+      assert_no_listen_related_configuration
     end
   end
 
+  def test_non_inclusion_of_listen_related_configuration_if_skip_listen
+    run_generator [destination_root, '--skip-listen']
+    assert_no_listen_related_configuration
+  end
+
   def test_evented_file_update_checker_config
     run_generator
     assert_file 'config/environments/development.rb' do |content|
@@ -759,4 +761,23 @@ class AppGeneratorTest < Rails::Generators::TestCase
       assert_file "Gemfile", /^\s*gem\s+["']#{gem}["']$*/
     end
   end
+
+  def assert_listen_related_configuration
+    assert_gem 'listen'
+    assert_gem 'spring-watcher-listen'
+
+    assert_file 'config/environments/development.rb' do |content|
+      assert_match(/^\s*config.file_watcher = ActiveSupport::EventedFileUpdateChecker/, content)
+    end
+  end
+
+  def assert_no_listen_related_configuration
+    assert_file 'Gemfile' do |content|
+      assert_no_match(/listen/, content)
+    end
+
+    assert_file 'config/environments/development.rb' do |content|
+      assert_match(/^\s*# config.file_watcher = ActiveSupport::EventedFileUpdateChecker/, content)
+    end
+  end
 end