From: bcardarella@...
Date: 2014-01-23T18:23:30+00:00
Subject: [ruby-core:60031] [ruby-trunk - Bug #9443] [Open] Pepended methods are skipped if calling alias

Issue #9443 has been reported by Brian Cardarella.

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Bug #9443: Pepended methods are skipped if calling alias
https://bugs.ruby-lang.org/issues/9443

* Author: Brian Cardarella
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
* ruby -v: 2.1.0
* Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN, 2.1: UNKNOWN
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I am unsure if this is related to https://bugs.ruby-lang.org/issues/7842 as that issue specifically mentions the user of "super" which my example code does not use. Anyway, here is the test to recreate:

require 'test/unit'

module A
  def foo
    'foo2'
  end
end

class B
  def foo
    'foo1'
  end
  alias_method :bar, :foo
end

B.send(:prepend, A)

class AliasTest < Test::Unit::TestCase
  def test_no_alias
    assert_equal 'foo2', B.new.foo
  end

  def test_with_alias
    assert_equal 'foo2', B.new.bar
  end
end

test_with_alias fails and will only call the original "foo" method.

I have confirmed this on Ruby 2.0.0-p353 & 2.1.0



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