From 888be9611b60bc7739d797e6defaf903b260b62d Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Thu, 24 Jun 2021 13:11:36 +0900
Subject: class.c: call hook methods on method definitions; close #2339

- `Module#method_added`
- `BasicObject#singleton_method_added`
---
 test/t/methods.rb | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

(limited to 'test')

diff --git a/test/t/methods.rb b/test/t/methods.rb
index f9c25dc33..9005d7976 100644
--- a/test/t/methods.rb
+++ b/test/t/methods.rb
@@ -107,3 +107,32 @@ assert('The undef statement (method undefined)', '13.3.7 a) 5)') do
     undef :non_existing_method
   end
 end
+
+assert('method_added hook') do
+  c = Class.new do
+    # method to retrieve @name
+    def self.name; @name; end
+    # hook method on method definition
+    def self.method_added(name) @name = name; end
+    # method definition
+    def foo; end
+  end
+  assert_equal(:foo, c.name)
+  c.define_method(:bar){}
+  assert_equal(:bar, c.name)
+end
+
+assert('singleton_method_added hook') do
+  a = Object.new
+  # method to retrieve @name
+  def a.name; @name; end
+  # hook method on singleton method definition
+  def a.singleton_method_added(name) @name = name; end
+  # singleton method definition
+  def a.foo; end
+  assert_equal(:foo, a.name)
+  class <<a
+    def bar; end
+  end
+  assert_equal(:bar, a.name)
+end
-- 
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