Details
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Bug
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Resolution: Unresolved
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Major - P3
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None
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7.1.4
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Tried in macOS and Ubuntu
Description
When defining belongs_to/has_one associations, the methods in the associated object change visibilty and ruby's `defined?` doesn't detect them.
When doing `parent.child = child`, the associated object is cloned (object_id changes) and while the class, ancestors, and everything looks and feels the same, something happens where the private methods are made public, and public methods are there but not recognized by ruby's `defined?`.
Same happens when doing `child.parent = parent`
Here's a minimal reproduction case:
require 'bundler/inline'
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gemfile do
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source 'https://rubygems.org'
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gem 'mongoid', '~> 7.1.4'
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gem 'minitest', '~> 5.14.1', require: ['minitest', 'minitest/autorun']
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end
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class Parent
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include Mongoid::Document
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belongs_to :child
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def a_public_method
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'parent public'
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end
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private
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def a_private_method
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'parent private'
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end
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end
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class Child
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include Mongoid::Document
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has_one :parent
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def a_public_method
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'child public'
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end
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private
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def a_private_method
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'child private'
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end
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end
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class TestRelationships < Minitest::Test
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def test_child_private_methods_stay_private
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parent = Parent.new
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child = Child.new
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parent.child = child
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assert_raises NoMethodError do
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child.a_private_method
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end
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assert_raises NoMethodError do
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parent.child.a_private_method
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end
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end
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def test_child_methods_are_defined
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parent = Parent.new
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child = Child.new
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parent.child = child
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assert_equal 'method', defined?(child.a_public_method)
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assert_equal 'method', defined?(parent.child.a_public_method)
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end
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def test_parent_private_methods_stay_private
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child = Child.new
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parent = Parent.new
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child.parent = parent
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assert_raises NoMethodError do
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parent.a_private_method
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end
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assert_raises NoMethodError do
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child.parent.a_private_method
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end
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end
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def test_parent_methods_are_defined
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child = Child.new
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parent = Parent.new
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child.parent = parent
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assert_equal 'method', defined?(parent.a_public_method)
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assert_equal 'method', defined?(child.parent.a_public_method)
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end
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end
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