Implement AS::Dependencies.verbose= compatibility for :zeitwerk mode

1 files changed, 36 insertions, 0 deletions

diff --git a/railties/test/application/zeitwerk_integration_test.rb b/railties/test/application/zeitwerk_integration_test.rb
index 16ffbe56bb..c536c2f7f4 100644
--- a/railties/test/application/zeitwerk_integration_test.rb
+++ b/railties/test/application/zeitwerk_integration_test.rb
@@ -163,4 +163,40 @@ class ZeitwerkIntegrationTest < ActiveSupport::TestCase
 
     assert_equal %i(main_autoloader), $zeitwerk_integration_reload_test
   end
+
+  test "verbose = true sets the debug method of the dependencies logger if present" do
+    boot
+
+    logger = Logger.new(File::NULL)
+    ActiveSupport::Dependencies.logger = logger
+    ActiveSupport::Dependencies.verbose = true
+
+    Rails.autoloaders.each do |autoloader|
+      assert_equal logger.method(:debug), autoloader.logger
+    end
+  end
+
+  test "verbose = true sets the debug method of the Rails logger as fallback" do
+    boot
+
+    ActiveSupport::Dependencies.verbose = true
+
+    Rails.autoloaders.each do |autoloader|
+      assert_equal Rails.logger.method(:debug), autoloader.logger
+    end
+  end
+
+  test "verbose = false sets loggers to nil" do
+    boot
+
+    ActiveSupport::Dependencies.verbose = true
+    Rails.autoloaders.each do |autoloader|
+      assert autoloader.logger
+    end
+
+    ActiveSupport::Dependencies.verbose = false
+    Rails.autoloaders.each do |autoloader|
+      assert_nil autoloader.logger
+    end
+  end
 end