test/psych/test_alias_and_anchor.rb

   1 # frozen_string_literal: true
   2 require_relative 'helper'
   3
   4 class ObjectWithInstanceVariables
   5   attr_accessor :var1, :var2
   6 end
   7
   8 class SubStringWithInstanceVariables < String
   9   attr_accessor :var1
  10 end
  11
  12 module Psych
  13  class TestAliasAndAnchor < TestCase
  14    def test_mri_compatibility
  15      yaml = <<EOYAML
  16 ---
  17 - &id001 !ruby/object {}
  18
  19 - *id001
  20 - *id001
  21 EOYAML
  22      result = Psych.unsafe_load yaml
  23      result.each {|el| assert_same(result[0], el) }
  24    end
  25
  26    def test_mri_compatibility_object_with_ivars
  27   yaml = <<EOYAML
  28 ---
  29 - &id001 !ruby/object:ObjectWithInstanceVariables
  30   var1: test1
  31   var2: test2
  32 - *id001
  33 - *id001
  34 EOYAML
  35
  36      result = Psych.unsafe_load yaml
  37      result.each do |el|
  38       assert_same(result[0], el)
  39       assert_equal('test1', el.var1)
  40       assert_equal('test2', el.var2)
  41     end
  42    end
  43
  44    def test_mri_compatibility_substring_with_ivars
  45     yaml = <<EOYAML
  46 ---
  47 - &id001 !str:SubStringWithInstanceVariables
  48   str: test
  49   "@var1": test
  50 - *id001
  51 - *id001
  52 EOYAML
  53      result = Psych.unsafe_load yaml
  54      result.each do |el|
  55       assert_same(result[0], el)
  56       assert_equal('test', el.var1)
  57     end
  58    end
  59
  60    def test_anchor_alias_round_trip
  61      o = Object.new
  62      original = [o,o,o]
  63
  64      yaml = Psych.dump original
  65      result = Psych.unsafe_load yaml
  66      result.each {|el| assert_same(result[0], el) }
  67    end
  68
  69    def test_anchor_alias_round_trip_object_with_ivars
  70      o = ObjectWithInstanceVariables.new
  71      o.var1 = 'test1'
  72      o.var2 = 'test2'
  73      original = [o,o,o]
  74
  75      yaml = Psych.dump original
  76      result = Psych.unsafe_load yaml
  77      result.each do |el|
  78       assert_same(result[0], el)
  79       assert_equal('test1', el.var1)
  80       assert_equal('test2', el.var2)
  81     end
  82    end
  83
  84    def test_anchor_alias_round_trip_substring_with_ivars
  85      o = SubStringWithInstanceVariables.new
  86      o.var1 = 'test'
  87      original = [o,o,o]
  88
  89      yaml = Psych.dump original
  90      result = Psych.unsafe_load yaml
  91      result.each do |el|
  92       assert_same(result[0], el)
  93       assert_equal('test', el.var1)
  94     end
  95    end
  96  end
  97 end