From 8dbcfe8cafdcf36d0b000b2ccaf5059fd2210c1e Mon Sep 17 00:00:00 2001
From: Chad Wilson <29788154+chadlwilson@users.noreply.github.com>
Date: Fri, 19 Sep 2025 11:31:32 +0800
Subject: [PATCH] [fix] Add missing 'debug' zero-argument logging signature

-Fixes #329
---
 History.md                                   |  4 ++++
 src/main/java/org/jruby/rack/ext/Logger.java |  5 +++++
 src/spec/ruby/jruby/rack/logger_spec.rb      | 20 ++++++++++++++++++++
 3 files changed, 29 insertions(+)

diff --git a/History.md b/History.md
index 33e64ae42..c42fcc855 100644
--- a/History.md
+++ b/History.md
@@ -1,3 +1,7 @@
+## 1.2.6 (UNRELEASED)
+
+- Add missing block-only signature for debug logging
+
 ## 1.2.5
 
 - Fix use of jruby-rack under Java 8 (#324)
diff --git a/src/main/java/org/jruby/rack/ext/Logger.java b/src/main/java/org/jruby/rack/ext/Logger.java
index 5f723187f..36d5659e4 100644
--- a/src/main/java/org/jruby/rack/ext/Logger.java
+++ b/src/main/java/org/jruby/rack/ext/Logger.java
@@ -246,6 +246,11 @@ public IRubyObject debug(final ThreadContext context,
         return context.runtime.newBoolean( add(DEBUG, context, msg, block) );
     }
 
+    @JRubyMethod(name = "debug")
+    public IRubyObject debug(final ThreadContext context, final Block block) {
+        return debug(context, context.nil, block);
+    }
+
     //
     // :call-seq:
     // info(message)
diff --git a/src/spec/ruby/jruby/rack/logger_spec.rb b/src/spec/ruby/jruby/rack/logger_spec.rb
index 0b9bf298d..b98b64f2b 100644
--- a/src/spec/ruby/jruby/rack/logger_spec.rb
+++ b/src/spec/ruby/jruby/rack/logger_spec.rb
@@ -86,6 +86,26 @@
     expect(logger.warn?).to be true
   end
 
+  [:debug, :info, :warn, :error, :fatal].each do |level|
+    it "logs at #{level} level" do
+      logger.public_send(level, 'message')
+      expect(real_logger.logged_content).to eql "#{level.to_s.upcase}: message\n"
+
+      real_logger.reset
+      logger.public_send(level, 'message') { 'ignored' }
+      expect(real_logger.logged_content).to eql "#{level.to_s.upcase}: message\n"
+
+      real_logger.reset
+      logger.public_send(level, nil) { 'message' }
+      expect(real_logger.logged_content).to eql "#{level.to_s.upcase}: message\n"
+
+
+      real_logger.reset
+      logger.public_send(level) { 'message' }
+      expect(real_logger.logged_content).to eql "#{level.to_s.upcase}: message\n"
+    end
+  end
+
   it "disables real logger's formatting when formatter is set" do
     real_logger.formatting = true
     expect(real_logger.formatting?).to be true