[ruby-core:67611] [ruby-trunk - Bug #10745] [Rejected] Special combinations of parameters in assert_equal (test/unit) may cause exceptions

Issue #10745 has been updated by Nobuyoshi Nakada.

Description updated
Status changed from Open to Rejected

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Bug #10745: Special combinations of parameters in assert_equal (test/unit) may cause exceptions
https://bugs.ruby-lang.org/issues/10745#change-51030

* Author: Herwin .
* Status: Rejected
* Priority: Low
* Assignee: 
* ruby -v: 2.1.2p95
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
----------------------------------------
~~~ruby
require 'test/unit'
require 'ipaddr'

class TestX < Test::Unit::TestCase
  def test_x
    assert_equal([IPAddr.new('1.2.3.4')], [[1,2,3]])
  end
end
~~~

This results in the following trace:

~~~
NoMethodError: undefined method `to_i' for [1, 2, 3]:Array
    /usr/lib/ruby/2.1.0/ipaddr.rb:471:in `initialize'
    /usr/lib/ruby/2.1.0/ipaddr.rb:516:in `new'
    /usr/lib/ruby/2.1.0/ipaddr.rb:516:in `coerce_other'
    /usr/lib/ruby/2.1.0/ipaddr.rb:150:in `=='
    /usr/lib/ruby/2.1.0/test/unit/assertions.rb:250:in `=='
    /usr/lib/ruby/2.1.0/test/unit/assertions.rb:250:in `assert_equal'
~~~

I don't think the `assert_equal` is supposed to throw these kind of errors



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