# encoding: utf-8
# -*- mode: ruby; ruby-indent-level: 4; tab-width: 4 -*-
#												vim:sw=4:ts=4
# $Id: test_yaml.rb 16084 2008-04-19 11:45:39Z knu $
#
require 'test/unit'
require 'yaml'

# [ruby-core:01946]
module YAML_Tests
  StructTest = Struct::new(:c)
end

class YAML_Unit_Tests < Test::Unit::TestCase
  #
  # Convert between YAML and the object to verify correct parsing and
  # emitting
  #
  def assert_to_yaml(obj, yaml)
    assert_equal(obj, YAML::load(yaml))
    assert_equal(obj, YAML::parse(yaml).transform)
    assert_equal(obj, YAML::load(obj.to_yaml))
    assert_equal(obj, YAML::parse(obj.to_yaml).transform)
    assert_equal(obj, YAML::load(
        obj.to_yaml(:UseVersion => true, :UseHeader => true, :SortKeys => true)
    ))
  end

  #
  # Test parser only
  #
  def assert_parse_only(obj, yaml)
    assert_equal(obj, YAML::load(yaml))
    assert_equal(obj, YAML::parse(yaml).transform)
  end

  def assert_cycle(obj)
    assert_equal(obj, YAML::load(obj.to_yaml))
  end

  def assert_path_segments(path, segments)
    YAML::YPath.each_path(path) { |choice|
      assert_equal(choice.segments, segments.shift)
    }
    assert_equal(segments.length, 0, "Some segments leftover: #{ segments.inspect }")
  end

  #
  # Make a time with the time zone
  #
  def mktime(year, mon, day, hour, min, sec, usec, zone = "Z")
    usec = usec.to_s.to_f * 1000000
    val = Time::utc(year.to_i, mon.to_i, day.to_i, hour.to_i, min.to_i, sec.to_i, usec)
    if zone != "Z"
      hour = zone[0, 3].to_i * 3600
      min = zone[3, 2].to_i * 60
      ofs = (hour + min)
      val = Time.at(val.to_f - ofs)
    end
    return val
  end

  #
  # Tests modified from 00basic.t in YAML.pm
  #
  def test_basic_map
    # Simple map
    assert_parse_only(
        {'one' => 'foo', 'three' => 'baz', 'two' => 'bar'}, <<EOY
one: foo
two: bar
three: baz
EOY
    )
  end

  def test_basic_strings
    # Common string types
    assert_cycle("x")
    assert_cycle(":x")
    assert_cycle(":")
    assert_parse_only(
        {1 => 'simple string', 2 => 42, 3 => '1 Single Quoted String',
         4 => 'YAML\'s Double "Quoted" String', 5 => "A block\n  with several\n    lines.\n",
         6 => "A \"chomped\" block", 7 => "A folded\n string\n", 8 => ": started string"},
        <<EOY
1: simple string
2: 42
3: '1 Single Quoted String'
4: "YAML's Double \\\"Quoted\\\" String"
5: |
  A block
    with several
      lines.
6: |-
  A "chomped" block
7: >
  A
  folded
   string
8: ": started string"
EOY
    )
  end

  #
  # Test the specification examples
  # - Many examples have been changes because of whitespace problems that
  #   caused the two to be inequivalent, or keys to be sorted wrong
  #

  def test_spec_simple_implicit_sequence
    # Simple implicit sequence
    assert_to_yaml(
        ['Mark McGwire', 'Sammy Sosa', 'Ken Griffey'], <<EOY
- Mark McGwire
- Sammy Sosa
- Ken Griffey
EOY
    )
  end

  def test_spec_simple_implicit_map
    # Simple implicit map
    assert_to_yaml(
        {'hr' => 65, 'avg' => 0.278, 'rbi' => 147}, <<EOY
avg: 0.278
hr: 65
rbi: 147
EOY
    )
  end

  def test_spec_simple_map_with_nested_sequences
    # Simple mapping with nested sequences
    assert_to_yaml(
        {'american' =>
             ['Boston Red Sox', 'Detroit Tigers', 'New York Yankees'],
         'national' =>
             ['New York Mets', 'Chicago Cubs', 'Atlanta Braves']}, <<EOY
american:
  - Boston Red Sox
  - Detroit Tigers
  - New York Yankees
national:
  - New York Mets
  - Chicago Cubs
  - Atlanta Braves
EOY
    )
  end

  def test_spec_simple_sequence_with_nested_map
    # Simple sequence with nested map
    assert_to_yaml(
        [
            {'name' => 'Mark McGwire', 'hr' => 65, 'avg' => 0.278},
            {'name' => 'Sammy Sosa', 'hr' => 63, 'avg' => 0.288}
        ], <<EOY
-
  avg: 0.278
  hr: 65
  name: Mark McGwire
-
  avg: 0.288
  hr: 63
  name: Sammy Sosa
EOY
    )
  end

  def test_spec_sequence_of_sequences
    # Simple sequence with inline sequences
    assert_parse_only(
        [
            ['name', 'hr', 'avg'],
            ['Mark McGwire', 65, 0.278],
            ['Sammy Sosa', 63, 0.288]
        ], <<EOY
- [ name         , hr , avg   ]
- [ Mark McGwire , 65 , 0.278 ]
- [ Sammy Sosa   , 63 , 0.288 ]
EOY
    )
  end

  def test_spec_mapping_of_mappings
    # Simple map with inline maps
    assert_parse_only(
        {'Mark McGwire' =>
             {'hr' => 65, 'avg' => 0.278},
         'Sammy Sosa' =>
             {'hr' => 63, 'avg' => 0.288}
        }, <<EOY
Mark McGwire: {hr: 65, avg: 0.278}
Sammy Sosa:   {hr: 63,
               avg: 0.288}
EOY
    )
  end

  def test_ambiguous_comments
    # [ruby-talk:88012]
    assert_to_yaml("Call the method #dave", <<EOY)
--- "Call the method #dave"
EOY
  end

  def test_spec_nested_comments
    # Map and sequences with comments
    assert_parse_only(
        {'hr' => ['Mark McGwire', 'Sammy Sosa'],
         'rbi' => ['Sammy Sosa', 'Ken Griffey']}, <<EOY
hr: # 1998 hr ranking
  - Mark McGwire
  - Sammy Sosa
rbi:
  # 1998 rbi ranking
  - Sammy Sosa
  - Ken Griffey
EOY
    )
  end

  def test_spec_anchors_and_aliases
    # Anchors and aliases
    assert_parse_only(
        {'hr' =>
             ['Mark McGwire', 'Sammy Sosa'],
         'rbi' =>
             ['Sammy Sosa', 'Ken Griffey']}, <<EOY
hr:
   - Mark McGwire
   # Name "Sammy Sosa" scalar SS
   - &SS Sammy Sosa
rbi:
   # So it can be referenced later.
   - *SS
   - Ken Griffey
EOY
    )

    assert_to_yaml(
        [{"arrival"=>"EDI", "departure"=>"LAX", "fareref"=>"DOGMA", "currency"=>"GBP"}, {"arrival"=>"MEL", "departure"=>"SYD", "fareref"=>"MADF", "currency"=>"AUD"}, {"arrival"=>"MCO", "departure"=>"JFK", "fareref"=>"DFSF", "currency"=>"USD"}], <<EOY
  -   
    &F fareref: DOGMA
    &C currency: GBP
    &D departure: LAX
    &A arrival: EDI 
  - { *F: MADF, *C: AUD, *D: SYD, *A: MEL }
  - { *F: DFSF, *C: USD, *D: JFK, *A: MCO }
EOY
    )

    assert_to_yaml(
        {"ALIASES"=>["fareref", "currency", "departure", "arrival"], "FARES"=>[{"arrival"=>"EDI", "departure"=>"LAX", "fareref"=>"DOGMA", "currency"=>"GBP"}, {"arrival"=>"MEL", "departure"=>"SYD", "fareref"=>"MADF", "currency"=>"AUD"}, {"arrival"=>"MCO", "departure"=>"JFK", "fareref"=>"DFSF", "currency"=>"USD"}]}, <<EOY
---
ALIASES: [&f fareref, &c currency, &d departure, &a arrival]
FARES:
- *f: DOGMA
  *c: GBP
  *d: LAX
  *a: EDI

- *f: MADF
  *c: AUD
  *d: SYD
  *a: MEL

- *f: DFSF
  *c: USD
  *d: JFK
  *a: MCO

EOY
    )

  end

  def test_spec_mapping_between_sequences
    # Complex key #1
    dj = Date.new(2001, 7, 23)
    assert_parse_only(
        {['Detroit Tigers', 'Chicago Cubs'] => [Date.new(2001, 7, 23)],
         ['New York Yankees', 'Atlanta Braves'] => [Date.new(2001, 7, 2), Date.new(2001, 8, 12), Date.new(2001, 8, 14)]}, <<EOY
? # PLAY SCHEDULE
  - Detroit Tigers
  - Chicago Cubs
:  
  - 2001-07-23

? [ New York Yankees,
    Atlanta Braves ]
: [ 2001-07-02, 2001-08-12, 
    2001-08-14 ]
EOY
    )

    # Complex key #2
    assert_parse_only(
        {['New York Yankees', 'Atlanta Braves'] =>
             [Date.new(2001, 7, 2), Date.new(2001, 8, 12),
              Date.new(2001, 8, 14)],
         ['Detroit Tigers', 'Chicago Cubs'] =>
             [Date.new(2001, 7, 23)]
        }, <<EOY
?
    - New York Yankees
    - Atlanta Braves
:
  - 2001-07-02
  - 2001-08-12
  - 2001-08-14
?
    - Detroit Tigers
    - Chicago Cubs
:
  - 2001-07-23
EOY
    )
  end

  def test_spec_sequence_key_shortcut
    # Shortcut sequence map
    assert_parse_only(
        {'invoice' => 34843, 'date' => Date.new(2001, 1, 23),
         'bill-to' => 'Chris Dumars', 'product' =>
            [{'item' => 'Super Hoop', 'quantity' => 1},
             {'item' => 'Basketball', 'quantity' => 4},
             {'item' => 'Big Shoes', 'quantity' => 1}]}, <<EOY
invoice: 34843
date   : 2001-01-23
bill-to: Chris Dumars
product:
  - item    : Super Hoop
    quantity: 1
  - item    : Basketball
    quantity: 4
  - item    : Big Shoes
    quantity: 1
EOY
    )
  end

  def test_spec_sequence_in_sequence_shortcut
    # Seq-in-seq
    assert_parse_only([[['one', 'two', 'three']]], <<EOY)
- - - one
    - two
    - three
EOY
  end

  def test_spec_sequence_shortcuts
    # Sequence shortcuts combined
    assert_parse_only(
        [
            [
                [['one']],
                ['two', 'three'],
                {'four' => nil},
                [{'five' => ['six']}],
                ['seven']
            ],
            ['eight', 'nine']
        ], <<EOY)
- - - - one
  - - two
    - three
  - four:
  - - five:
      - six
  - - seven
- - eight
  - nine
EOY
  end

  def test_spec_single_literal
    # Literal scalar block
    assert_parse_only(["\\/|\\/|\n/ |  |_\n"], <<EOY)
- |
    \\/|\\/|
    / |  |_
EOY
  end

  def test_spec_single_folded
    # Folded scalar block
    assert_parse_only(
        ["Mark McGwire's year was crippled by a knee injury.\n"], <<EOY
- >
    Mark McGwire\'s
    year was crippled
    by a knee injury.
EOY
    )
  end

  def test_spec_preserve_indent
    # Preserve indented spaces
    assert_parse_only(
        "Sammy Sosa completed another fine season with great stats.\n\n  63 Home Runs\n  0.288 Batting Average\n\nWhat a year!\n", <<EOY
--- >
 Sammy Sosa completed another
 fine season with great stats.

   63 Home Runs
   0.288 Batting Average

 What a year!
EOY
    )
  end

  def test_spec_indentation_determines_scope
    assert_parse_only(
        {'name' => 'Mark McGwire', 'accomplishment' => "Mark set a major league home run record in 1998.\n",
         'stats' => "65 Home Runs\n0.278 Batting Average\n"}, <<EOY
name: Mark McGwire
accomplishment: >
   Mark set a major league
   home run record in 1998.
stats: |
   65 Home Runs
   0.278 Batting Average
EOY
    )
  end

  def test_spec_multiline_scalars
    # Multiline flow scalars
    assert_parse_only(
        {'plain' => 'This unquoted scalar spans many lines.',
         'quoted' => "So does this quoted scalar.\n"}, <<EOY
plain: This unquoted
       scalar spans
       many lines.
quoted: "\\
  So does this quoted
  scalar.\\n"
EOY
    )
  end

  def test_spec_type_int
    assert_parse_only(
        {'canonical' => 12345, 'decimal' => 12345, 'octal' => '014'.oct, 'hexadecimal' => '0xC'.hex}, <<EOY
canonical: 12345
decimal: +12,345
octal: 014
hexadecimal: 0xC
EOY
    )
    assert_parse_only(
        {'canonical' => 685230, 'decimal' => 685230, 'octal' => 02472256, 'hexadecimal' => 0x0A74AE, 'sexagesimal' => 685230}, <<EOY)
canonical: 685230
decimal: +685,230
octal: 02472256
hexadecimal: 0x0A,74,AE
sexagesimal: 190:20:30
EOY
  end

  def test_spec_type_float
    assert_parse_only(
        {'canonical' => 1230.15, 'exponential' => 1230.15, 'fixed' => 1230.15,
         'negative infinity' => -1.0/0.0}, <<EOY)
canonical: 1.23015e+3
exponential: 12.3015e+02
fixed: 1,230.15
negative infinity: -.inf
EOY
    nan = YAML::load(<<EOY)
not a number: .NaN
EOY
    assert(nan['not a number'].nan?)
  end

  def test_spec_type_misc
    assert_parse_only(
        {nil => nil, true => true, false => false, 'string' => '12345'}, <<EOY
null: ~
true: yes
false: no
string: '12345'
EOY
    )
  end

  def test_spec_complex_invoice
    # Complex invoice type
    id001 = {'given' => 'Chris', 'family' => 'Dumars', 'address' =>
        {'lines' => "458 Walkman Dr.\nSuite #292\n", 'city' => 'Royal Oak',
         'state' => 'MI', 'postal' => 48046}}
    assert_parse_only(
        {'invoice' => 34843, 'date' => Date.new(2001, 1, 23),
         'bill-to' => id001, 'ship-to' => id001, 'product' =>
            [{'sku' => 'BL394D', 'quantity' => 4,
              'description' => 'Basketball', 'price' => 450.00},
             {'sku' => 'BL4438H', 'quantity' => 1,
              'description' => 'Super Hoop', 'price' => 2392.00}],
         'tax' => 251.42, 'total' => 4443.52,
         'comments' => "Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338.\n"}, <<EOY
invoice: 34843
date   : 2001-01-23
bill-to: &id001
    given  : Chris
    family : !str Dumars
    address:
        lines: |
            458 Walkman Dr.
            Suite #292
        city    : Royal Oak
        state   : MI
        postal  : 48046
ship-to: *id001
product:
    - !map
      sku         : BL394D
      quantity    : 4
      description : Basketball
      price       : 450.00
    - sku         : BL4438H
      quantity    : 1
      description : Super Hoop
      price       : 2392.00
tax  : 251.42
total: 4443.52
comments: >
    Late afternoon is best.
    Backup contact is Nancy
    Billsmer @ 338-4338.
EOY
    )
  end

  def test_spec_log_file
    doc_ct = 0
    YAML::load_documents(<<EOY
---
Time: 2001-11-23 15:01:42 -05:00
User: ed
Warning: >
  This is an error message
  for the log file
---
Time: 2001-11-23 15:02:31 -05:00
User: ed
Warning: >
  A slightly different error
  message.
---
Date: 2001-11-23 15:03:17 -05:00
User: ed
Fatal: >
  Unknown variable "bar"
Stack:
  - file: TopClass.py
    line: 23
    code: |
      x = MoreObject("345\\n")
  - file: MoreClass.py
    line: 58
    code: |-
      foo = bar
EOY
    ) { |doc|
      case doc_ct
        when 0
          assert_equal(doc, {'Time' => mktime(2001, 11, 23, 15, 01, 42, 00, "-05:00"),
                             'User' => 'ed', 'Warning' => "This is an error message for the log file\n"})
        when 1
          assert_equal(doc, {'Time' => mktime(2001, 11, 23, 15, 02, 31, 00, "-05:00"),
                             'User' => 'ed', 'Warning' => "A slightly different error message.\n"})
        when 2
          assert_equal(doc, {'Date' => mktime(2001, 11, 23, 15, 03, 17, 00, "-05:00"),
                             'User' => 'ed', 'Fatal' => "Unknown variable \"bar\"\n",
                             'Stack' => [
                                 {'file' => 'TopClass.py', 'line' => 23, 'code' => "x = MoreObject(\"345\\n\")\n"},
                                 {'file' => 'MoreClass.py', 'line' => 58, 'code' => "foo = bar"}]})
      end
      doc_ct += 1
    }
    assert_equal(doc_ct, 3)
  end

  def test_spec_root_fold
    y = YAML::load(<<EOY
--- >
This YAML stream contains a single text value.
The next stream is a log file - a sequence of
log entries. Adding an entry to the log is a
simple matter of appending it at the end.
EOY
    )
    assert_equal(y, "This YAML stream contains a single text value. The next stream is a log file - a sequence of log entries. Adding an entry to the log is a simple matter of appending it at the end.\n")
  end

  def test_spec_root_mapping
    y = YAML::load(<<EOY
# This stream is an example of a top-level mapping.
invoice : 34843
date    : 2001-01-23
total   : 4443.52
EOY
    )
    assert_equal(y, {'invoice' => 34843, 'date' => Date.new(2001, 1, 23), 'total' => 4443.52})
  end

  def test_spec_oneline_docs
    doc_ct = 0
    YAML::load_documents(<<EOY
# The following is a sequence of three documents.
# The first contains an empty mapping, the second
# an empty sequence, and the last an empty string.
--- {}
--- [ ]
--- ''
EOY
    ) { |doc|
      case doc_ct
        when 0
          assert_equal(doc, {})
        when 1
          assert_equal(doc, [])
        when 2
          assert_equal(doc, '')
      end
      doc_ct += 1
    }
    assert_equal(doc_ct, 3)
  end

  def test_spec_domain_prefix
    customer_proc = proc { |type, val|
      if Hash === val
        scheme, domain, type = type.split(':', 3)
        val['type'] = "domain #{type}"
        val
      else
        raise ArgumentError, "Not a Hash in domain.tld,2002/invoice: " + val.inspect
      end
    }
    YAML.add_domain_type("domain.tld,2002", 'invoice', &customer_proc)
    YAML.add_domain_type("domain.tld,2002", 'customer', &customer_proc)
    assert_parse_only({"invoice"=> {"customers"=> [{"given"=>"Chris", "type"=>"domain customer", "family"=>"Dumars"}], "type"=>"domain invoice"}}, <<EOY
# 'http://domain.tld,2002/invoice' is some type family.
invoice: !domain.tld,2002/^invoice
  # 'seq' is shorthand for 'http://yaml.org/seq'.
  # This does not effect '^customer' below
  # because it is does not specify a prefix.
  customers: !seq
    # '^customer' is shorthand for the full
    # notation 'http://domain.tld,2002/customer'.
    - !^customer
      given : Chris
      family : Dumars
EOY
    )
  end

  def test_spec_throwaway
    assert_parse_only(
        {"this"=>"contains three lines of text.\nThe third one starts with a\n# character. This isn't a comment.\n"}, <<EOY
### These are four throwaway comment  ###

### lines (the second line is empty). ###
this: |   # Comments may trail lines.
    contains three lines of text.
    The third one starts with a
    # character. This isn't a comment.

# These are three throwaway comment
# lines (the first line is empty).
EOY
    )
  end

  def test_spec_force_implicit
    # Force implicit
    assert_parse_only(
        {'integer' => 12, 'also int' => 12, 'string' => '12'}, <<EOY
integer: 12
also int: ! "12"
string: !str 12
EOY
    )
  end

  def test_spec_private_types
    doc_ct = 0
    YAML::parse_documents(<<EOY
# Private types are per-document.
---
pool: !!ball
   number: 8
   color: black
---
bearing: !!ball
   material: steel
EOY
    ) { |doc|
      case doc_ct
        when 0
          assert_equal(doc['pool'].type_id, 'x-private:ball')
          assert_equal(doc['pool'].transform.value, {'number' => 8, 'color' => 'black'})
        when 1
          assert_equal(doc['bearing'].type_id, 'x-private:ball')
          assert_equal(doc['bearing'].transform.value, {'material' => 'steel'})
      end
      doc_ct += 1
    }
    assert_equal(doc_ct, 2)
  end

  def test_spec_url_escaping
    YAML.add_domain_type("domain.tld,2002", "type0") { |type, val|
      "ONE: #{val}"
    }
    YAML.add_domain_type("domain.tld,2002", "type%30") { |type, val|
      "TWO: #{val}"
    }
    assert_parse_only(
        {'same' => ['ONE: value', 'ONE: value'], 'different' => ['TWO: value']}, <<EOY
same:
  - !domain.tld,2002/type\\x30 value
  - !domain.tld,2002/type0 value
different: # As far as the YAML parser is concerned
  - !domain.tld,2002/type%30 value
EOY
    )
  end

  def test_spec_override_anchor
    # Override anchor
    a001 = "The alias node below is a repeated use of this value.\n"
    assert_parse_only(
        {'anchor' => 'This scalar has an anchor.', 'override' => a001, 'alias' => a001}, <<EOY
anchor : &A001 This scalar has an anchor.
override : &A001 >
 The alias node below is a
 repeated use of this value.
alias : *A001
EOY
    )
  end

  def test_spec_explicit_families
    YAML.add_domain_type("somewhere.com,2002", 'type') { |type, val|
      "SOMEWHERE: #{val}"
    }
    assert_parse_only(
        {'not-date' => '2002-04-28', 'picture' => "GIF89a\f\000\f\000\204\000\000\377\377\367\365\365\356\351\351\345fff\000\000\000\347\347\347^^^\363\363\355\216\216\216\340\340\340\237\237\237\223\223\223\247\247\247\236\236\236i^\020' \202\n\001\000;", 'hmm' => "SOMEWHERE: family above is short for\nhttp://somewhere.com/type\n"}, <<EOY
not-date: !str 2002-04-28
picture: !binary |
 R0lGODlhDAAMAIQAAP//9/X
 17unp5WZmZgAAAOfn515eXv
 Pz7Y6OjuDg4J+fn5OTk6enp
 56enmleECcgggoBADs=

hmm: !somewhere.com,2002/type | 
 family above is short for
 http://somewhere.com/type
EOY
    )
  end

  def test_spec_application_family
    # Testing the clarkevans.com graphs
    YAML.add_domain_type("clarkevans.com,2002", 'graph/shape') { |type, val|
      if Array === val
        val << "Shape Container"
        val
      else
        raise ArgumentError, "Invalid graph of type #{val.class}: " + val.inspect
      end
    }
    one_shape_proc = Proc.new { |type, val|
      if Hash === val
        type = type.split(/:/)
        val['TYPE'] = "Shape: #{type[2]}"
        val
      else
        raise ArgumentError, "Invalid graph of type #{val.class}: " + val.inspect
      end
    }
    YAML.add_domain_type("clarkevans.com,2002", 'graph/circle', &one_shape_proc)
    YAML.add_domain_type("clarkevans.com,2002", 'graph/line', &one_shape_proc)
    YAML.add_domain_type("clarkevans.com,2002", 'graph/text', &one_shape_proc)
    assert_parse_only(
        [[{"radius"=>7, "center"=>{"x"=>73, "y"=>129}, "TYPE"=>"Shape: graph/circle"}, {"finish"=>{"x"=>89, "y"=>102}, "TYPE"=>"Shape: graph/line", "start"=>{"x"=>73, "y"=>129}}, {"TYPE"=>"Shape: graph/text", "value"=>"Pretty vector drawing.", "start"=>{"x"=>73, "y"=>129}, "color"=>16772795}, "Shape Container"]], <<EOY
- !clarkevans.com,2002/graph/^shape
  - !^circle
    center: &ORIGIN {x: 73, y: 129}
    radius: 7
  - !^line # !clarkevans.com,2002/graph/line
    start: *ORIGIN
    finish: { x: 89, y: 102 }
  - !^text
    start: *ORIGIN
    color: 0xFFEEBB
    value: Pretty vector drawing.
EOY
    )
  end

  def test_spec_float_explicit
    assert_parse_only(
        [10.0, 10.0, 10.0, 10.0], <<EOY
# All entries in the sequence
# have the same type and value.
- 10.0
- !float 10
- !yaml.org,2002/^float '10'
- !yaml.org,2002/float "\\
  1\\
  0"
EOY
    )
  end

  def test_spec_builtin_seq
    # Assortment of sequences
    assert_parse_only(
        {'empty' => [], 'in-line' => ['one', 'two', 'three', 'four', 'five'],
         'nested' => ['First item in top sequence', ['Subordinate sequence entry'],
                      "A multi-line sequence entry\n", 'Sixth item in top sequence']}, <<EOY
empty: []
in-line: [ one, two, three # May span lines,
         , four,           # indentation is
           five ]          # mostly ignored.
nested:
 - First item in top sequence
 -
  - Subordinate sequence entry
 - >
   A multi-line
   sequence entry
 - Sixth item in top sequence
EOY
    )
  end

  def test_spec_builtin_map
    # Assortment of mappings
    assert_parse_only(
        {'empty' => {}, 'in-line' => {'one' => 1, 'two' => 2},
         'spanning' => {'one' => 1, 'two' => 2},
         'nested' => {'first' => 'First entry', 'second' =>
             {'key' => 'Subordinate mapping'}, 'third' =>
             ['Subordinate sequence', {}, 'Previous mapping is empty.',
              {'A key' => 'value pair in a sequence.', 'A second' => 'key:value pair.'},
              'The previous entry is equal to the following one.',
              {'A key' => 'value pair in a sequence.', 'A second' => 'key:value pair.'}],
                      12.0 => 'This key is a float.', "?\n" => 'This key had to be protected.',
                      "\a" => 'This key had to be escaped.',
                      "This is a multi-line folded key\n" => "Whose value is also multi-line.\n",
                      ['This key', 'is a sequence'] => ['With a sequence value.']}}, <<EOY

empty: {}
in-line: { one: 1, two: 2 }
spanning: { one: 1,
   two: 2 }
nested:
 first : First entry
 second:
  key: Subordinate mapping
 third:
  - Subordinate sequence
  - { }
  - Previous mapping is empty.
  - A key: value pair in a sequence.
    A second: key:value pair.
  - The previous entry is equal to the following one.
  -
    A key: value pair in a sequence.
    A second: key:value pair.
 !float 12 : This key is a float.
 ? >
  ?
 : This key had to be protected.
 "\\a" : This key had to be escaped.
 ? >
   This is a
   multi-line
   folded key
 : >
   Whose value is
   also multi-line.
 ?
  - This key
  - is a sequence
 :
  - With a sequence value.
# The following parses correctly,
# but Ruby 1.6.* fails the comparison!
# ?
#  This: key
#  is a: mapping
# :
#  with a: mapping value.
EOY
    )
  end

  def test_spec_builtin_literal_blocks
    # Assortment of literal scalar blocks
    assert_parse_only(
        {"both are equal to"=>"  This has no newline.", "is equal to"=>"The \\ ' \" characters may be\nfreely used. Leading white\n   space is significant.\n\nLine breaks are significant.\nThus this value contains one\nempty line and ends with a\nsingle line break, but does\nnot start with one.\n", "also written as"=>"  This has no newline.", "indented and chomped"=>"  This has no newline.", "empty"=>"", "literal"=>"The \\ ' \" characters may be\nfreely used. Leading white\n   space is significant.\n\nLine breaks are significant.\nThus this value contains one\nempty line and ends with a\nsingle line break, but does\nnot start with one.\n"}, <<EOY
empty: |

literal: |
 The \\ ' " characters may be
 freely used. Leading white
    space is significant.

 Line breaks are significant.
 Thus this value contains one
 empty line and ends with a
 single line break, but does
 not start with one.

is equal to: "The \\ ' \\" characters may \\
 be\\nfreely used. Leading white\\n   space \\
 is significant.\\n\\nLine breaks are \\
 significant.\\nThus this value contains \\
 one\\nempty line and ends with a\\nsingle \\
 line break, but does\\nnot start with one.\\n"

# Comments may follow a nested
# scalar value. They must be
# less indented.

# Modifiers may be combined in any order.
indented and chomped: |2-
    This has no newline.

also written as: |-2
    This has no newline.

both are equal to: "  This has no newline."
EOY
    )

    str1 = "This has one newline.\n"
    str2 = "This has no newline."
    str3 = "This has two newlines.\n\n"
    assert_parse_only(
        {'clipped' => str1, 'same as "clipped" above' => str1,
         'stripped' => str2, 'same as "stripped" above' => str2,
         'kept' => str3, 'same as "kept" above' => str3}, <<EOY
clipped: |
    This has one newline.

same as "clipped" above: "This has one newline.\\n"

stripped: |-
    This has no newline.

same as "stripped" above: "This has no newline."

kept: |+
    This has two newlines.

same as "kept" above: "This has two newlines.\\n\\n"

EOY
    )
  end

  def test_spec_span_single_quote
    assert_parse_only({"third"=>"a single quote ' must be escaped.", "second"=>"! : \\ etc. can be used freely.", "is same as"=>"this contains six spaces\nand one line break", "empty"=>"", "span"=>"this contains six spaces\nand one line break"}, <<EOY
empty: ''
second: '! : \\ etc. can be used freely.'
third: 'a single quote '' must be escaped.'
span: 'this contains
      six spaces
      
      and one
      line break'
is same as: "this contains six spaces\\nand one line break"
EOY
    )
  end

  def test_spec_span_double_quote
    assert_parse_only({"is equal to"=>"this contains four  spaces", "third"=>"a \" or a \\ must be escaped.", "second"=>"! : etc. can be used freely.", "empty"=>"", "fourth"=>"this value ends with an LF.\n", "span"=>"this contains four  spaces"}, <<EOY
empty: ""
second: "! : etc. can be used freely."
third: "a \\\" or a \\\\ must be escaped."
fourth: "this value ends with an LF.\\n"
span: "this contains
  four  \\
      spaces"
is equal to: "this contains four  spaces"
EOY
    )
  end

  def test_spec_builtin_time
    # Time
    assert_parse_only(
        {"space separated" => mktime(2001, 12, 14, 21, 59, 43, ".10", "-05:00"),
         "canonical" => mktime(2001, 12, 15, 2, 59, 43, ".10"),
         "date (noon UTC)" => Date.new(2002, 12, 14),
         "valid iso8601" => mktime(2001, 12, 14, 21, 59, 43, ".10", "-05:00")}, <<EOY
canonical: 2001-12-15T02:59:43.1Z
valid iso8601: 2001-12-14t21:59:43.10-05:00
space separated: 2001-12-14 21:59:43.10 -05:00
date (noon UTC): 2002-12-14
EOY
    )
  end

  def test_spec_builtin_binary
    arrow_gif = "GIF89a\f\000\f\000\204\000\000\377\377\367\365\365\356\351\351\345fff\000\000\000\347\347\347^^^\363\363\355\216\216\216\340\340\340\237\237\237\223\223\223\247\247\247\236\236\236iiiccc\243\243\243\204\204\204\377\376\371\377\376\371\377\376\371\377\376\371\377\376\371\377\376\371\377\376\371\377\376\371\377\376\371\377\376\371\377\376\371\377\376\371\377\376\371\377\376\371!\376\016Made with GIMP\000,\000\000\000\000\f\000\f\000\000\005,  \216\2010\236\343@\024\350i\020\304\321\212\010\034\317\200M$z\357\3770\205p\270\2601f\r\e\316\001\303\001\036\020' \202\n\001\000;"
    assert_parse_only(
        {'canonical' => arrow_gif, 'base64' => arrow_gif,
         'description' => "The binary value above is a tiny arrow encoded as a gif image.\n"}, <<EOY
canonical: !binary "\\
 R0lGODlhDAAMAIQAAP//9/X17unp5WZmZgAAAOf\\
 n515eXvPz7Y6OjuDg4J+fn5OTk6enp56enmlpaW\\
 NjY6Ojo4SEhP/++f/++f/++f/++f/++f/++f/++\\
 f/++f/++f/++f/++f/++f/++f/++SH+Dk1hZGUg\\
 d2l0aCBHSU1QACwAAAAADAAMAAAFLCAgjoEwnuN\\
 AFOhpEMTRiggcz4BNJHrv/zCFcLiwMWYNG84Bww\\
 EeECcgggoBADs="
base64: !binary |
 R0lGODlhDAAMAIQAAP//9/X17unp5WZmZgAAAOf
 n515eXvPz7Y6OjuDg4J+fn5OTk6enp56enmlpaW
 NjY6Ojo4SEhP/++f/++f/++f/++f/++f/++f/++
 f/++f/++f/++f/++f/++f/++f/++SH+Dk1hZGUg
 d2l0aCBHSU1QACwAAAAADAAMAAAFLCAgjoEwnuN
 AFOhpEMTRiggcz4BNJHrv/zCFcLiwMWYNG84Bww
 EeECcgggoBADs=
description: >
 The binary value above is a tiny arrow
 encoded as a gif image.
EOY
    )
  end

  def test_ruby_regexp
    # Test Ruby regular expressions
    assert_to_yaml(
        {'simple' => /a.b/, 'complex' => %r'\A"((?:[^"]|\")+)"',
         'case-insensitive' => /George McFly/i}, <<EOY
case-insensitive: !ruby/regexp "/George McFly/i"
complex: !ruby/regexp "/\\\\A\\"((?:[^\\"]|\\\\\\")+)\\"/"
simple: !ruby/regexp "/a.b/"
EOY
    )
  end

  #
  # Test of Ranges
  #
  def test_ranges

    # Simple numeric
    assert_to_yaml(1..3, <<EOY)
--- !ruby/range 1..3
EOY

    # Simple alphabetic
    assert_to_yaml('a'..'z', <<EOY)
--- !ruby/range a..z
EOY

    # Float
    assert_to_yaml(10.5...30.3, <<EOY)
--- !ruby/range 10.5...30.3
EOY

  end

  def test_ruby_struct
    # Ruby structures
    book_struct = Struct::new("BookStruct", :author, :title, :year, :isbn)
    assert_to_yaml(
        [book_struct.new("Yukihiro Matsumoto", "Ruby in a Nutshell", 2002, "0-596-00214-9"),
         book_struct.new(['Dave Thomas', 'Andy Hunt'], "The Pickaxe", 2002,
                         book_struct.new("This should be the ISBN", "but I have another struct here", 2002, "None")
         )], <<EOY
- !ruby/struct:BookStruct
  author: Yukihiro Matsumoto
  title: Ruby in a Nutshell
  year: 2002
  isbn: 0-596-00214-9
- !ruby/struct:BookStruct
  author:
    - Dave Thomas
    - Andy Hunt
  title: The Pickaxe
  year: 2002
  isbn: !ruby/struct:BookStruct
    author: This should be the ISBN
    title: but I have another struct here
    year: 2002
    isbn: None
EOY
    )

    assert_to_yaml(YAML_Tests::StructTest.new(123), <<EOY)
--- !ruby/struct:YAML_Tests::StructTest
c: 123
EOY

  end

  def test_emitting_indicators
    assert_to_yaml("Hi, from Object 1. You passed: please, pretty please", <<EOY
--- "Hi, from Object 1. You passed: please, pretty please"
EOY
    )
  end

  #
  # Test the YAML::Stream class -- INACTIVE at the moment
  #
  def test_document
    y = YAML::Stream.new(:Indent => 2, :UseVersion => 0)
    y.add(
        {'hi' => 'hello', 'map' =>
            {'good' => 'two'},
         'time' => Time.now,
         'try' => /^po(.*)$/,
         'bye' => 'goodbye'
        }
    )
    y.add({'po' => 'nil', 'oper' => 90})
    y.add({'hi' => 'wow!', 'bye' => 'wow!'})
    y.add({['Red Socks', 'Boston'] => ['One', 'Two', 'Three']})
    y.add([true, false, false])
  end

  #
  # Test YPath choices parsing
  #
  def test_ypath_parsing
    assert_path_segments("/*/((one|three)/name|place)|//place",
                         [["*", "one", "name"],
                          ["*", "three", "name"],
                          ["*", "place"],
                          ["/", "place"]]
    )
  end

  #
  # Tests from Tanaka Akira on [ruby-core]
  #
  def test_akira

    # Commas in plain scalars [ruby-core:1066]
    assert_to_yaml(
        {"A"=>"A,", "B"=>"B"}, <<EOY
A: "A,"
B: B
EOY
    )

    # Double-quoted keys [ruby-core:1069]
    assert_to_yaml(
        {"1"=>2, "2"=>3}, <<EOY
'1': 2
"2": 3
EOY
    )

    # Anchored mapping [ruby-core:1071]
    assert_to_yaml(
        [{"a"=>"b"}] * 2, <<EOY
- &id001
  a: b
- *id001
EOY
    )

    # Stress test [ruby-core:1071]
    # a = []; 1000.times { a << {"a"=>"b", "c"=>"d"} }
    # YAML::load( a.to_yaml )

  end

  def test_tab_in_scalar
    assert_equal "36L\tDIESEL", YAML.load("--- 36L\tDIESEL\n")
  end

  #
  # Test Time.now cycle
  #
  def test_time_now_cycle
    #
    # From Minero Aoki [ruby-core:2305]
    #
    require 'yaml'
    t = Time.now
    5.times do
      assert_cycle(t)
    end
  end

  #
  # Test Range cycle
  #
  def test_range_cycle
    #
    # From Minero Aoki [ruby-core:02306]
    #
    assert_cycle("a".."z")

    #
    # From Nobu Nakada [ruby-core:02311]
    #
    assert_cycle(0..1)
    assert_cycle(1.0e20 .. 2.0e20)
    assert_cycle("0".."1")
    assert_cycle(".."..."...")
    assert_cycle(".rb"..".pl")
    assert_cycle(".rb"...".pl")
    assert_cycle('"'...".")
    assert_cycle("'"...".")
  end

  #
  # Circular references
  #
  def test_circular_references
    a = []; a[0] = a; a[1] = a
    inspect_str = "[[...], [...]]"
    assert_equal(inspect_str, YAML::load(a.to_yaml).inspect)
  end

  #
  # Test Symbol cycle
  #
  def test_symbol_cycle
    #
    # From Aaron Schrab [ruby-Bugs:2535]
    #
    assert_cycle(:"^foo")
  end

  #
  # Test Numeric cycle
  #
  class NumericTest < Numeric
    def initialize(value)
      @value = value
    end

    def ==(other)
      @value == other.instance_eval { @value }
    end
  end

  def test_numeric_cycle
    assert_cycle(1) # Fixnum
    assert_cycle(111111111111111111111111111111111) # Bignum
    assert_cycle(NumericTest.new(3)) # Subclass of Numeric
  end

  #
  # Test empty map/seq in map cycle
  #
  def test_empty_map_key
    #
    # empty seq as key
    #
    o = YAML.load({[]=>""}.to_yaml)
    assert_equal(Hash, o.class)
    assert_equal([[]], o.keys)

    #
    # empty map as key
    #
    o = YAML.load({{}=>""}.to_yaml)
    assert_equal(Hash, o.class)
    assert_equal([{}], o.keys)
  end

  #
  # contributed by riley lynch [ruby-Bugs-8548]
  #
  def test_object_id_collision
    omap = YAML::Omap.new
    1000.times { |i| omap["key_#{i}"] = {"value" => i} }
    raise "id collision in ordered map" if omap.to_yaml =~ /id\d+/
  end

  def test_JRUBY_718
    assert_equal("--- \"\"\n", ''.to_yaml)
    assert_equal('', YAML.load("---\n!str"))
  end


  def test_JRUBY_719
    assert_equal('---', YAML.load("--- ---\n"))
    assert_equal('---', YAML.load("---"))

    astr = "abcde"
    shared = astr[2..-1]
    assert_equal('cde', YAML.load(shared))
    assert_equal("--- cde\n", shared.to_yaml)
  end

  def test_JRUBY_1026
    a = "one0.1"
    b = a[3..-1]
    assert_equal("--- \"0.1\"\n", YAML.dump(b))
  end

  class HashWithIndifferentAccess < Hash
  end

  def test_JRUBY_1169

    hash = HashWithIndifferentAccess.new
    hash['kind'] = 'human'
    need_to_be_serialized = {:first => 'something', :second_params => hash}
    a = {:x => need_to_be_serialized.to_yaml}
    assert_equal need_to_be_serialized, YAML.load(YAML.load(a.to_yaml)[:x])
  end

  def test_JRUBY_1220 # make sure all three variations work
    bad_text = " A\nR"
    dump = YAML.dump({'text' => bad_text})
    loaded = YAML.load(dump)
    assert_equal bad_text, loaded['text']

    bad_text = %{
 ActiveRecord::StatementInvalid in ProjectsController#confirm_delete
RuntimeError: ERROR	C23503	Mupdate or delete on "projects" violates foreign
    }
    dump = YAML.dump({'text' => bad_text})
    loaded = YAML.load(dump)
    assert_equal bad_text, loaded['text']

    string = <<-YAML
outer
  property1: value1
  additional:
  - property2: value2
    color: green
    data: SELECT 'xxxxxxxxxxxxxxxxxxx', COUNT(*) WHERE xyzabc = 'unk'
    combine: overlay-bottom
    YAML
    assert_equal string, YAML.load(YAML.dump(string))
  end

  def test_yaml_fuzz
## TODO: implement real fuzz testing of YAML round tripping here

    text = " "*80 + "\n" + " "*30
    assert_equal text, YAML.load(YAML.dump(text))

    text = <<-YAML
  - label: New
    color: green
    data: SELECT 'Iteration Scheduled', COUNT(*) WHERE Status = 'New'
    combine: overlay-bottom
  - label: Open
    color: pink
    data: SELECT 'Iteration Scheduled', COUNT(*) WHERE Status = 'Open'
    combine: overlay-bottom
  - label: Ready for Development
    color: yellow
    data: SELECT 'Iteration Scheduled', COUNT(*) WHERE Status = 'Ready for Development'
    combine: overlay-bottom
    color: blue
    data: SELECT 'Iteration Scheduled', COUNT(*) WHERE Status = 'Complete'
    combine: overlay-bottom
  - label: Other statuses
    color: red
    data: SELECT 'Iteration Scheduled', COUNT(*)
                    combine: total
    YAML

    assert_equal text, YAML.load(YAML.dump(text))

    text = <<-YAML
stack-bar-chart
  conditions: 'Release' in (R1) and not 'Iteration Scheduled' = null
  labels: SELECT DISTINCT 'Iteration Scheduled' ORDER BY 'Iteration Scheduled'
  cumulative: true
  series:
  - label: New
    color: green
    data: SELECT 'Iteration Scheduled', COUNT(*) WHERE Status = 'New'
    combine: overlay-bottom
  - label: Open
    color: pink
    data: SELECT 'Iteration Scheduled', COUNT(*) WHERE Status = 'Open'
    combine: overlay-bottom
  - label: Ready for Development
    color: yellow
    data: SELECT 'Iteration Scheduled', COUNT(*) WHERE Status = 'Ready for Development'
    combine: overlay-bottom
  - label: Complete
    color: blue
    data: SELECT 'Iteration Scheduled', COUNT(*) WHERE Status = 'Complete'
    combine: overlay-bottom
  - label: Other statuses
    color: red
    data: SELECT 'Iteration Scheduled', COUNT(*)
    combine: total
    YAML

    assert_equal text, YAML.load(YAML.dump(text))

    text = <<YAML
valid_key:
key1: value
invalid_key
akey: blah
YAML

    assert_raises(ArgumentError) do
      YAML.load(text)
    end

    def roundtrip(text)
      assert_equal text, YAML.load(YAML.dump(text))
    end

    roundtrip("C VW\205\v\321XU\346")
    roundtrip("\n8 xwKmjHG")
    roundtrip("1jq[\205qIB\ns")
    roundtrip("\rj\230fso\304\nEE")
    roundtrip("ks]qkYM\2073Un\317\nL\346Yp\204 CKMfFcRDFZ\vMNk\302fQDR<R\v \314QUa\234P\237s aLJnAu \345\262Wqm_W\241\277J\256ILKpPNsMPuok")

    def fuzz_roundtrip(str)
      str.gsub! /\n +/, "\n"
      out = YAML.load(YAML.dump(str))
      assert_equal str, out
    end

    fuzz_roundtrip("\n  vKH iqB")

    values = (1..255).to_a
    values.delete(13)
    more = ('a'..'z').to_a + ('A'..'Z').to_a
    blanks = [' ', "\t", "\n"]

    types = [more*10 + blanks*2, values + more*10 + blanks*2, values + more*10 + blanks*20]
    sizes = [10, 81, 214]

    errors = []
    types.each do |t|
      sizes.each do |s|
        1000.times do |vv|
          val = ""
          s.times do
            val << t[rand(t.length)]
          end
          fuzz_roundtrip(val)
        end
      end
    end

    assert_nothing_raised do
      YAML.load_file("test/yaml/does_not_work.yml")
    end

    roundtrip :"1"
  end

  class YamlTest
    def initialize
      @test = Hash.new
      @test["hello"] = "foo"
    end
  end

  def test_JRUBY_1471

    list = [YamlTest.new, YamlTest.new, YamlTest.new]
    assert_equal 3, list.map { |ll| ll.object_id }.uniq.length
    list2 = YAML.load(YAML.dump(list))
    assert_equal 3, list2.map { |ll| ll.object_id }.uniq.length
  end

  def test_JRUBY_1659
    YAML.load("{a: 2007-01-01 01:12:34}")
  end

  def test_JRUBY_1766
    assert YAML.load(Time.now.to_yaml).instance_of?(Time)
    assert YAML.load("2007-01-01 01:12:34").instance_of?(String)
    assert YAML.load("2007-01-01 01:12:34.0").instance_of?(String)
    assert YAML.load("2007-01-01 01:12:34 +00:00").instance_of?(Time)
    assert YAML.load("2007-01-01 01:12:34.0 +00:00").instance_of?(Time)
    assert YAML.load("{a: 2007-01-01 01:12:34}")["a"].instance_of?(String)
  end

  def test_JRUBY_1898
    val = YAML.load(<<YAML)
---
- foo
- foo
- [foo]
- [foo]
- {foo: foo}
- {foo: foo}
YAML

    assert val[0].object_id != val[1].object_id
    assert val[2].object_id != val[3].object_id
    assert val[4].object_id != val[5].object_id
  end

  def test_JRUBY_1911
    val = YAML.load(<<YAML)
---
foo: { bar }
YAML

    assert_equal({"foo" => {"bar" => nil}}, val)
  end

  def test_JRUBY_1756
# This is almost certainly invalid YAML. but MRI handles it...
    val = YAML.load(<<YAML)
---
default: –
- a
YAML

    assert_equal({"default" => ['a']}, val)
  end

  class TestYamlFoo
    def to_yaml(*args)
      "foo"
    end
  end

  def test_JRUBY_1978 # scalars can start with , if it's not ambigous
    assert_equal(",a", YAML.load("--- \n,a"))

# Make sure that overriding to_yaml always throws an exception unless it returns the correct thing


    assert_raises(TypeError) do
      {:foo => TestYamlFoo.new}.to_yaml
    end
  end

  def test_JRUBY_2019
    # handle tagged_classes, yaml_as and so on a bit better
    tagged_classes = YAML::tagged_classes.to_a

    {
        "tag:yaml.org,2002:omap"=>YAML::Omap,
        "tag:yaml.org,2002:pairs"=>YAML::Pairs,
        "tag:yaml.org,2002:set"=>YAML::Set,
        "tag:yaml.org,2002:timestamp#ymd"=>Date,
        "tag:yaml.org,2002:bool#yes"=>TrueClass,
        "tag:yaml.org,2002:int"=>Integer,
        "tag:yaml.org,2002:timestamp"=>Time,
        "tag:yaml.org,2002:binary"=>String,
        "tag:yaml.org,2002:str"=>String,
        "tag:yaml.org,2002:map"=>Hash,
        "tag:yaml.org,2002:null"=>NilClass,
        "tag:yaml.org,2002:bool#no"=>FalseClass,
        "tag:yaml.org,2002:seq"=>Array,
        "tag:yaml.org,2002:float"=>Float,
        "tag:ruby.yaml.org,2002:sym"=>Symbol,
        "tag:ruby.yaml.org,2002:object"=>Object,
        "tag:ruby.yaml.org,2002:hash"=>Hash,
        "tag:ruby.yaml.org,2002:time"=>Time,
        "tag:ruby.yaml.org,2002:symbol"=>Symbol,
        "tag:ruby.yaml.org,2002:string"=>String,
        "tag:ruby.yaml.org,2002:regexp"=>Regexp,
        "tag:ruby.yaml.org,2002:range"=>Range,
        "tag:ruby.yaml.org,2002:array"=>Array,
        "tag:ruby.yaml.org,2002:exception"=>Exception,
        "tag:ruby.yaml.org,2002:struct"=>Struct,
    }.to_a.each {|a| assert tagged_classes.include? a}
  end

  def test_JRUBY_2083
    assert_equal({'foobar' => '>= 123'}, YAML.load("foobar: >= 123"))
  end

  def test_JRUBY_2135
    assert_equal({'foo' => 'bar'}, YAML.load("---\nfoo: \tbar"))
  end

  def test_JRUBY_1911
    assert_equal({'foo' => {'bar' => nil, 'qux' => nil}}, YAML.load("---\nfoo: {bar, qux}"))
  end

  class ::YAMLTestException < Exception;
  end
  class ::YAMLTestString < String;
  end

  def test_JRUBY_2323
    assert_equal('--- !str:YAMLTestString', YAMLTestString.new.to_yaml.strip)
    assert_equal(YAMLTestString.new, YAML::load('--- !str:YAMLTestString'))

    assert_equal(<<EXCEPTION_OUT, YAMLTestException.new.to_yaml)
--- !ruby/exception:YAMLTestException 
message: YAMLTestException
EXCEPTION_OUT

    assert_equal(YAMLTestException.new.inspect, YAML::load(YAMLTestException.new.to_yaml).inspect)
  end

  def test_JRUBY_2409
    assert_equal("*.rb", YAML::load("---\n*.rb"))
    assert_equal("&.rb", YAML::load("---\n&.rb"))
  end

  def test_JRUBY_2443
    a_str = "foo"
    a_str.instance_variable_set :@bar, "baz"

    assert(["--- !str \nstr: foo\n\"@bar\": baz\n", "--- !str \n\"@bar\": baz\nstr: foo\n"].include?(a_str.to_yaml))
    assert_equal "baz", YAML.load(a_str.to_yaml).instance_variable_get(:@bar)

    assert_equal :"abc\"flo", YAML.load("---\n:\"abc\\\"flo\"")
  end

  def test_JRUBY_2579
    assert_equal [:year], YAML.load("---\n[:year]")

    assert_equal({
                   'date_select' => {'order' => [:year, :month, :day]},
                   'some' => {
                       'id' => 1,
                       'name' => 'some',
                       'age' => 16}}, YAML.load(<<YAML))
date_select:
  order: [:year, :month, :day]
some:
    id: 1
    name: some
    age: 16
YAML
  end

  def test_JRUBY_2754
    obj = Object.new
    objects1 = [obj, obj]
    assert objects1[0].object_id == objects1[1].object_id

    objects2 = YAML::load objects1.to_yaml
    assert objects2[0].object_id == objects2[1].object_id
  end

  class ::FooYSmith < Array;
  end

  class ::FooXSmith < Hash;
  end

  def test_JRUBY_2192

    obj = YAML.load(<<YAMLSTR)
--- !ruby/array:FooYSmith
- val
- val2
YAMLSTR

    assert_equal FooYSmith, obj.class

    obj = YAML.load(<<YAMLSTR)
--- !ruby/hash:FooXSmith
key: value
otherkey: othervalue
YAMLSTR

    assert_equal FooXSmith, obj.class
  end

  class PersonTestOne
    yaml_as 'tag:data.allman.ms,2008:Person'
  end

  def roundtrip(text)
    assert_equal text, YAML.load(YAML.dump(text))
  end

  def test_JRUBY_2976
    assert_equal "--- !data.allman.ms,2008/Person {}\n\n", PersonTestOne.new.to_yaml
    assert_equal PersonTestOne, YAML.load(PersonTestOne.new.to_yaml).class


    Hash.class_eval do
      def to_yaml(opts = {})
        YAML::quick_emit(self, opts) do |out|
          out.map(taguri, to_yaml_style) do |map|
            each do |k, v|
              map.add(k, v)
            end
          end
        end
      end

    end

    roundtrip({"element" => "value", "array" => [{"nested_element" => "nested_value"}]})

    jruby3639 = <<Y
--- !ruby/object:MySoap::InterfaceOne::DiscountServiceRequestType
orderRequest: !ruby/object:MySoap::InterfaceOne::OrderType
  brand: !str
    str: ""
Y

    assert_nothing_raised { YAML.load(jruby3639) }
  end

  class ::Badger
    attr_accessor :name, :age

    def initialize(name, age)
      @name = name
      @age = age
    end

    def to_s
      "#{name}:#{age}"
    end

    def self.from_s (s)
      ss = s.split(":")
      Badger.new ss[0], ss[1]
    end
  end

#
# opening Badger to add custom YAML serialization
#
  class ::Badger
    yaml_as "tag:ruby.yaml.org,2002:#{self}"

    def to_yaml (opts={})
      YAML::quick_emit(self.object_id, opts) do |out|
        out.map(taguri) do |map|
          map.add("s", to_s)
        end
      end
    end

    def Badger.yaml_new (klass, tag, val)
      s = val["s"]
      begin
        Badger.from_s s
      rescue => e
        raise "failed to decode Badger from '#{s}'"
      end
    end
  end

  def test_JRUBY_3773
    b = Badger.new("Axel", 35)

    assert_equal YAML::dump(b), <<OUT
--- !ruby/Badger 
s: Axel:35
OUT
  end

  class ControlStruct < Struct.new(:arg1)
  end

  class BadStruct < Struct.new(:arg1)
    def initialize(a1)
      self.arg1 = a1
    end
  end

  class ControlObject
    attr_accessor :arg1

    def initialize(a1)
      self.arg1 = a1
    end

    def ==(o)
      self.arg1 == o.arg1
    end
  end

  def test_JRUBY_3751
    class_obj1 = ControlObject.new('class_value')
    struct_obj1 = ControlStruct.new
    struct_obj1.arg1 = 'control_value'
    struct_obj2 = BadStruct.new('struct_value')

    assert_equal YAML.load(class_obj1.to_yaml), class_obj1
    assert_equal YAML.load(struct_obj1.to_yaml), struct_obj1
    assert_equal YAML.load(struct_obj2.to_yaml), struct_obj2
  end

  class Sample
    attr_reader :key

    def yaml_initialize(tag, val)
      @key = 'yaml initialize'
    end
  end

  class SampleHash < Hash
    attr_reader :key

    def yaml_initialize(tag, val)
      @key = 'yaml initialize'
    end
  end

  class SampleArray < Array
    attr_reader :key

    def yaml_initialize(tag, val)
      @key = 'yaml initialize'
    end
  end

  def test_JRUBY_3518
    s = YAML.load(YAML.dump(Sample.new))
    assert_equal 'yaml initialize', s.key

    s = YAML.load(YAML.dump(SampleHash.new))
    assert_equal 'yaml initialize', s.key

    s = YAML.load(YAML.dump(SampleArray.new))
    assert_equal 'yaml initialize', s.key
  end


  def test_JRUBY_3327
    assert_equal YAML.load("- foo\n  bar: bazz"), [{"foo bar" => "bazz"}]
  end

  def test_JRUBY_3263
    y = <<YAML
production:
 ABQIAAAAinq15RDnRyoOaQwM_PoC4RTJQa0g3IQ9GZqIMmInSLzwtGDKaBTPoBdSu0WQaPTIv1sXhVRK0Kolfg
 example.com: ABQIAAAAzMUFFnT9uH0Sfg98Y4kbhGFJQa0g3IQ9GZqIMmInSLrthJKGDmlRT98f4j135zat56yjRKQlWnkmod3TB
YAML

    assert_equal YAML.load(y)['production'], {"ABQIAAAAinq15RDnRyoOaQwM_PoC4RTJQa0g3IQ9GZqIMmInSLzwtGDKaBTPoBdSu0WQaPTIv1sXhVRK0Kolfg example.com" => "ABQIAAAAzMUFFnT9uH0Sfg98Y4kbhGFJQa0g3IQ9GZqIMmInSLrthJKGDmlRT98f4j135zat56yjRKQlWnkmod3TB"}
  end

  def test_JRUBY_3412
    y = "--- 2009-02-16 22::40:26.574754 -05:00\n"
    assert_equal YAML.load(y).to_yaml, y
  end

  class Node4345
    def initialize(parent = nil)
      @parent = parent
    end

    def add_child
      @child = Node4345.new(self)
    end
  end

  def test_JRUBY_4345
    ruby_object = Node4345.new
    ruby_object.add_child
    assert_equal ruby_object.to_yaml, YAML.load(ruby_object.to_yaml).to_yaml
  end

  def test_JRUBY_5581
    assert_equal YAML.load("---\ndate: 2011-03-03 00:00:01.0210000000 Z").to_yaml, "--- \ndate: 2011-03-03 00:03:31 Z\n"
    assert_equal YAML.load("---\ndate: 2011-03-03 00:00:01.0000000012 Z").to_yaml, "--- \ndate: 2011-03-03 00:00:01.000012 Z\n"
  end
end