From 26e88e1e4a1849d65f19b9714fa802d76ceae9f7 Mon Sep 17 00:00:00 2001
From: Sampo Kuokkanen <sampo.kuokkanen@gmail.com>
Date: Mon, 4 May 2026 20:28:49 +0900
Subject: [PATCH] Add specs for Method#/UnboundMethod#original_name through a
 three-alias chain

Extend MethodSpecs::Methods and UnboundMethodSpecs::Methods with a third
alias hop (alias qux baz), and add examples verifying that
Method#original_name and UnboundMethod#original_name still return :foo
when reached through three levels of aliasing.

The existing "aliased twice" examples only exercise two-hop chains, which
doesn't catch implementations that resolve a fixed depth rather than walking
the full chain.
---
 core/method/fixtures/classes.rb          | 1 +
 core/method/original_name_spec.rb        | 6 ++++++
 core/unboundmethod/fixtures/classes.rb   | 1 +
 core/unboundmethod/original_name_spec.rb | 6 ++++++
 4 files changed, 14 insertions(+)

diff --git a/core/method/fixtures/classes.rb b/core/method/fixtures/classes.rb
index 464a519aea..41904df1d1 100644
--- a/core/method/fixtures/classes.rb
+++ b/core/method/fixtures/classes.rb
@@ -27,6 +27,7 @@ def foo
 
     alias bar foo
     alias baz bar
+    alias qux baz
 
     def same_as_foo
       true
diff --git a/core/method/original_name_spec.rb b/core/method/original_name_spec.rb
index 71cfb65656..8fec0e7c33 100644
--- a/core/method/original_name_spec.rb
+++ b/core/method/original_name_spec.rb
@@ -20,6 +20,12 @@
     obj.method(:baz).unbind.bind(obj).original_name.should == :foo
   end
 
+  it "returns the original name even when aliased thrice" do
+    obj = MethodSpecs::Methods.new
+    obj.method(:qux).original_name.should == :foo
+    obj.method(:qux).unbind.bind(obj).original_name.should == :foo
+  end
+
   it "returns the source UnboundMethod's name (not the name given to define_method)" do
     klass = Class.new { define_method(:my_inspect, ::Kernel.instance_method(:inspect)) }
     klass.new.method(:my_inspect).original_name.should == :inspect
diff --git a/core/unboundmethod/fixtures/classes.rb b/core/unboundmethod/fixtures/classes.rb
index bb3f7e0849..58120c2f88 100644
--- a/core/unboundmethod/fixtures/classes.rb
+++ b/core/unboundmethod/fixtures/classes.rb
@@ -36,6 +36,7 @@ def with_block(&block); end
 
     alias bar foo
     alias baz bar
+    alias qux baz
     alias alias_1 foo
     alias alias_2 foo
 
diff --git a/core/unboundmethod/original_name_spec.rb b/core/unboundmethod/original_name_spec.rb
index e50ce28dd7..fa9a6fcc63 100644
--- a/core/unboundmethod/original_name_spec.rb
+++ b/core/unboundmethod/original_name_spec.rb
@@ -20,6 +20,12 @@
     UnboundMethodSpecs::Methods.instance_method(:baz).original_name.should == :foo
   end
 
+  it "returns the original name even when aliased thrice" do
+    obj = UnboundMethodSpecs::Methods.new
+    obj.method(:qux).unbind.original_name.should == :foo
+    UnboundMethodSpecs::Methods.instance_method(:qux).original_name.should == :foo
+  end
+
   it "returns the source UnboundMethod's name (not the name given to define_method)" do
     klass = Class.new { define_method(:my_inspect, ::Kernel.instance_method(:inspect)) }
     klass.instance_method(:my_inspect).original_name.should == :inspect