# frozen_string_literal: true

require 'minitest/autorun'
require 'phocus'
require 'jsonpath'
require 'json'

class TestJsonpath < MiniTest::Unit::TestCase
  def setup
    @object = example_object
    @object2 = example_object
  end

  def test_bracket_matching
    assert_raises(ArgumentError) { JsonPath.new('$.store.book[0') }
    assert_raises(ArgumentError) { JsonPath.new('$.store.book[0]]') }
    assert_equal [9], JsonPath.new('$.store.book[0].price').on(@object)
  end

  def test_lookup_direct_path
    assert_equal 7, JsonPath.new('$.store.*').on(@object).first['book'].size
  end

  def test_lookup_missing_element
    assert_equal [], JsonPath.new('$.store.book[99].price').on(@object)
  end

  def test_retrieve_all_authors
    assert_equal [
      @object['store']['book'][0]['author'],
      @object['store']['book'][1]['author'],
      @object['store']['book'][2]['author'],
      @object['store']['book'][3]['author'],
      @object['store']['book'][4]['author'],
      @object['store']['book'][5]['author'],
      @object['store']['book'][6]['author']
    ], JsonPath.new('$..author').on(@object)
  end

  def test_retrieve_all_prices
    assert_equal [
      @object['store']['bicycle']['price'],
      @object['store']['book'][0]['price'],
      @object['store']['book'][1]['price'],
      @object['store']['book'][2]['price'],
      @object['store']['book'][3]['price']
    ].sort, JsonPath.new('$..price').on(@object).sort
  end

  def test_recognize_array_splices
    assert_equal [@object['store']['book'][0]], JsonPath.new('$..book[0:1:1]').on(@object)
    assert_equal [@object['store']['book'][0], @object['store']['book'][1]], JsonPath.new('$..book[0:2:1]').on(@object)
    assert_equal [@object['store']['book'][1], @object['store']['book'][3], @object['store']['book'][5]], JsonPath.new('$..book[1::2]').on(@object)
    assert_equal [@object['store']['book'][0], @object['store']['book'][2], @object['store']['book'][4], @object['store']['book'][6]], JsonPath.new('$..book[::2]').on(@object)
    assert_equal [@object['store']['book'][0], @object['store']['book'][2]], JsonPath.new('$..book[:-5:2]').on(@object)
    assert_equal [@object['store']['book'][5], @object['store']['book'][6]], JsonPath.new('$..book[5::]').on(@object)
  end

  def test_slice_array_with_exclusive_end_correctly
    assert_equal [@object['store']['book'][0], @object['store']['book'][1]], JsonPath.new('$..book[:2]').on(@object)
  end

  def test_recognize_array_comma
    assert_equal [@object['store']['book'][0], @object['store']['book'][1]], JsonPath.new('$..book[0,1]').on(@object)
    assert_equal [@object['store']['book'][2], @object['store']['book'][6]], JsonPath.new('$..book[2,-1::]').on(@object)
  end

  def test_recognize_filters
    assert_equal [@object['store']['book'][2], @object['store']['book'][3]], JsonPath.new("$..book[?(@['isbn'])]").on(@object)
    assert_equal [@object['store']['book'][0], @object['store']['book'][2]], JsonPath.new("$..book[?(@['price'] < 10)]").on(@object)
    assert_equal [@object['store']['book'][0], @object['store']['book'][2]], JsonPath.new("$..book[?(@['price'] == 9)]").on(@object)
    assert_equal [@object['store']['book'][3]], JsonPath.new("$..book[?(@['price'] > 20)]").on(@object)
  end

  def test_or_operator
    assert_equal [@object['store']['book'][1], @object['store']['book'][3]], JsonPath.new("$..book[?(@['price'] == 13 || @['price'] == 23)]").on(@object)
  end

  def test_and_operator
    assert_equal [], JsonPath.new("$..book[?(@['price'] == 13 && @['price'] == 23)]").on(@object)
  end

  def test_and_operator_with_more_results
    assert_equal [@object['store']['book'][1]], JsonPath.new("$..book[?(@['price'] < 23 && @['price'] > 9)]").on(@object)
  end

  def test_nested_grouping
    path = "$..book[?((@['price'] == 19 && @['author'] == 'Herman Melville') || @['price'] == 23)]"
    assert_equal [@object['store']['book'][3]], JsonPath.new(path).on(@object)
  end

  def test_eval_with_floating_point_and_and
    assert_equal [@object['store']['book'][1]], JsonPath.new("$..book[?(@['price'] < 23.0 && @['price'] > 9.0)]").on(@object)
  end

  def test_eval_with_floating_point
    assert_equal [@object['store']['book'][1]], JsonPath.new("$..book[?(@['price'] == 13.0)]").on(@object)
  end

  def test_paths_with_underscores
    assert_equal [@object['store']['bicycle']['catalogue_number']], JsonPath.new('$.store.bicycle.catalogue_number').on(@object)
  end

  def test_path_with_hyphens
    assert_equal [@object['store']['bicycle']['single-speed']], JsonPath.new('$.store.bicycle.single-speed').on(@object)
  end

  def test_path_with_colon
    assert_equal [@object['store']['bicycle']['make:model']], JsonPath.new('$.store.bicycle.make:model').on(@object)
  end

  def test_paths_with_numbers
    assert_equal [@object['store']['bicycle']['2seater']], JsonPath.new('$.store.bicycle.2seater').on(@object)
  end

  def test_recognize_array_with_evald_index
    assert_equal [@object['store']['book'][2]], JsonPath.new('$..book[(@.length-5)]').on(@object)
  end

  def test_use_first
    assert_equal @object['store']['book'][2], JsonPath.new('$..book[(@.length-5)]').first(@object)
  end

  def test_counting
    assert_equal 57, JsonPath.new('$..*').on(@object).to_a.size
  end

  def test_space_in_path
    assert_equal ['e'], JsonPath.new("$.'c d'").on('a' => 'a', 'b' => 'b', 'c d' => 'e')
  end

  def test_class_method
    assert_equal JsonPath.new('$..author').on(@object), JsonPath.on(@object, '$..author')
  end

  def test_join
    assert_equal JsonPath.new('$.store.book..author').on(@object), JsonPath.new('$.store').join('book..author').on(@object)
  end

  def test_gsub
    @object2['store']['bicycle']['price'] += 10
    @object2['store']['book'][0]['price'] += 10
    @object2['store']['book'][1]['price'] += 10
    @object2['store']['book'][2]['price'] += 10
    @object2['store']['book'][3]['price'] += 10
    assert_equal @object2, JsonPath.for(@object).gsub('$..price') { |p| p + 10 }.to_hash
  end

  def test_gsub!
    JsonPath.for(@object).gsub!('$..price') { |p| p + 10 }
    assert_equal 30, @object['store']['bicycle']['price']
    assert_equal 19, @object['store']['book'][0]['price']
    assert_equal 23, @object['store']['book'][1]['price']
    assert_equal 19, @object['store']['book'][2]['price']
    assert_equal 33, @object['store']['book'][3]['price']
  end

  def test_weird_gsub!
    h = { 'hi' => 'there' }
    JsonPath.for(@object).gsub!('$.*') { |_| h }
    assert_equal h, @object
  end

  def test_gsub_to_false!
    h = { 'hi' => 'there' }
    h2 = { 'hi' => false }
    assert_equal h2, JsonPath.for(h).gsub!('$.hi') { |_| false }.to_hash
  end

  def test_where_selector
    JsonPath.for(@object).gsub!('$..book.price[?(@ > 20)]') { |p| p + 10 }
  end

  def test_compact
    h = { 'hi' => 'there', 'you' => nil }
    JsonPath.for(h).compact!
    assert_equal({ 'hi' => 'there' }, h)
  end

  def test_delete
    h = { 'hi' => 'there', 'you' => nil }
    JsonPath.for(h).delete!('*.hi')
    assert_equal({ 'you' => nil }, h)
  end

  def test_delete_2
    json = { 'store' => {
      'book' => [
        { 'category' => 'reference',
          'author' => 'Nigel Rees',
          'title' => 'Sayings of the Century',
          'price' => 9,
          'tags' => %w[asdf asdf2] },
        { 'category' => 'fiction',
          'author' => 'Evelyn Waugh',
          'title' => 'Sword of Honour',
          'price' => 13 },
        { 'category' => 'fiction',
          'author' => 'Aasdf',
          'title' => 'Aaasdf2',
          'price' => 1 }
      ]
    } }
    json_deleted = { 'store' => {
      'book' => [
        { 'category' => 'fiction',
          'author' => 'Evelyn Waugh',
          'title' => 'Sword of Honour',
          'price' => 13 },
        { 'category' => 'fiction',
          'author' => 'Aasdf',
          'title' => 'Aaasdf2',
          'price' => 1 }
      ]
    } }
    assert_equal(json_deleted, JsonPath.for(json).delete("$..store.book[?(@.category == 'reference')]").obj)
  end

  def test_delete_3
    json = { 'store' => {
      'book' => [
        { 'category' => 'reference',
          'author' => 'Nigel Rees',
          'title' => 'Sayings of the Century',
          'price' => 9,
          'tags' => %w[asdf asdf2],
          'this' => {
            'delete_me' => [
              'no' => 'do not'
            ]
          } },
        { 'category' => 'fiction',
          'author' => 'Evelyn Waugh',
          'title' => 'Sword of Honour',
          'price' => 13 },
        { 'category' => 'fiction',
          'author' => 'Aasdf',
          'title' => 'Aaasdf2',
          'price' => 1 }
      ]
    } }
    json_deleted = { 'store' => {
      'book' => [
        { 'category' => 'reference',
          'author' => 'Nigel Rees',
          'title' => 'Sayings of the Century',
          'price' => 9,
          'tags' => %w[asdf asdf2],
          'this' => {} },
        { 'category' => 'fiction',
          'author' => 'Evelyn Waugh',
          'title' => 'Sword of Honour',
          'price' => 13 },
        { 'category' => 'fiction',
          'author' => 'Aasdf',
          'title' => 'Aaasdf2',
          'price' => 1 }
      ]
    } }
    assert_equal(json_deleted, JsonPath.for(json).delete('$..store.book..delete_me').obj)
  end

  def test_delete_for_array
    before = JsonPath.on(@object, '$..store.book[1]')
    JsonPath.for(@object).delete!('$..store.book[0]')
    after = JsonPath.on(@object, '$..store.book[0]')
    assert_equal(after, before, 'Before is the second element. After should have been equal to the next element after delete.')
  end

  def test_at_sign_in_json_element
    data =
      { '@colors' =>
      [{ '@r' => 255, '@g' => 0, '@b' => 0 },
       { '@r' => 0, '@g' => 255, '@b' => 0 },
       { '@r' => 0, '@g' => 0, '@b' => 255 }] }

    assert_equal [255, 0, 0], JsonPath.on(data, '$..@r')
  end

  def test_wildcard
    assert_equal @object['store']['book'].collect { |e| e['price'] }.compact, JsonPath.on(@object, '$..book[*].price')
  end

  def test_wildcard_on_intermediary_element
    assert_equal [1], JsonPath.on({ 'a' => { 'b' => { 'c' => 1 } } }, '$.a..c')
  end

  def test_wildcard_on_intermediary_element_v2
    assert_equal [1], JsonPath.on({ 'a' => { 'b' => { 'd' => { 'c' => 1 } } } }, '$.a..c')
  end

  def test_wildcard_on_intermediary_element_v3
    assert_equal [1], JsonPath.on({ 'a' => { 'b' => { 'd' => { 'c' => 1 } } } }, '$.a.*..c')
  end

  def test_wildcard_on_intermediary_element_v4
    assert_equal [1], JsonPath.on({ 'a' => { 'b' => { 'd' => { 'c' => 1 } } } }, '$.a.*..c')
  end

  def test_wildcard_on_intermediary_element_v5
    assert_equal [1], JsonPath.on({ 'a' => { 'b' => { 'c' => 1 } } }, '$.a.*.c')
  end

  def test_wildcard_on_intermediary_element_v6
    assert_equal ['red'], JsonPath.new('$.store.*.color').on(@object)
  end

  def test_wildcard_empty_array
    object = @object.merge('bicycle' => { 'tire' => [] })
    assert_equal [], JsonPath.on(object, '$..bicycle.tire[*]')
  end

  def test_support_filter_by_array_childnode_value
    assert_equal [@object['store']['book'][3]], JsonPath.new('$..book[?(@.price > 20)]').on(@object)
  end

  def test_support_filter_by_childnode_value_with_inconsistent_children
    @object['store']['book'][0] = 'string_instead_of_object'
    assert_equal [@object['store']['book'][3]], JsonPath.new('$..book[?(@.price > 20)]').on(@object)
  end

  def test_support_filter_by_childnode_value_and_select_child_key
    assert_equal [23], JsonPath.new('$..book[?(@.price > 20)].price').on(@object)
  end

  def test_support_filter_by_childnode_value_over_childnode_and_select_child_key
    assert_equal ['Osennie Vizity'], JsonPath.new('$..book[?(@.written.year == 1996)].title').on(@object)
  end

  def test_support_filter_by_object_childnode_value
    data = {
      'data' => {
        'type' => 'users',
        'id' => '123'
      }
    }
    assert_equal [{ 'type' => 'users', 'id' => '123' }], JsonPath.new("$.data[?(@.type == 'users')]").on(data)
    assert_equal [], JsonPath.new("$.[?(@.type == 'admins')]").on(data)
  end

  def test_support_at_sign_in_member_names
    assert_equal [@object['store']['@id']], JsonPath.new('$.store.@id').on(@object)
  end

  def test_support_dollar_sign_in_member_names
    assert_equal [@object['store']['$meta-data']],
                 JsonPath.new('$.store.$meta-data').on(@object)
  end

  def test_support_underscore_in_member_names
    assert_equal [@object['store']['_links']],
                 JsonPath.new('$.store._links').on(@object)
  end

  def test_dig_return_string
    assert_equal ['asdf'], JsonPath.new("$.store.book..tags[?(@ == 'asdf')]").on(@object)
    assert_equal [], JsonPath.new("$.store.book..tags[?(@ == 'not_asdf')]").on(@object)
  end

  def test_slash_in_value
    data = {
      'data' => [{
        'type' => 'mps/awesome'
      }, {
        'type' => 'not'
      }]
    }
    assert_equal [{ 'type' => 'mps/awesome' }], JsonPath.new('$.data[?(@.type == "mps/awesome")]').on(data)
  end

  def test_floating_point_with_precision_marker
    data = {
      'data' => {
        'type' => 0.00001
      }
    }
    assert_equal [{ 'type' => 0.00001 }], JsonPath.new('$.data[?(@.type == 0.00001)]').on(data)
  end

  def test_digits_only_string
    data = {
      'foo' => {
        'type' => 'users',
        'id' => '123'
      }
    }
    assert_equal([{ 'type' => 'users', 'id' => '123' }], JsonPath.new("$.foo[?(@.id == '123')]").on(data))
  end

  def test_digits_only_string_in_array
    data = {
      'foo' => [{
        'type' => 'users',
        'id' => '123'
      }, {
        'type' => 'users',
        'id' => '321'
      }]
    }
    assert_equal([{ 'type' => 'users', 'id' => '123' }], JsonPath.new("$.foo[?(@.id == '123')]").on(data))
  end

  def test_at_in_filter
    jsonld = {
      'mentions' => [
        {
          'name' => 'Delimara Powerplant',
          'identifier' => 'krzana://took/powerstation/Delimara Powerplant',
          '@type' => 'Place',
          'geo' => {
            'latitude' => 35.83020073454,
            'longitude' => 14.55602645874
          }
        }
      ]
    }
    assert_equal(['Place'], JsonPath.new("$..mentions[?(@['@type'] == 'Place')].@type").on(jsonld))
  end

  def test_dollar_in_filter
    jsonld = {
      'mentions' => [
        {
          'name' => 'Delimara Powerplant',
          'identifier' => 'krzana://took/powerstation/Delimara Powerplant',
          '$type' => 'Place',
          'geo' => {
            'latitude' => 35.83020073454,
            'longitude' => 14.55602645874
          }
        }
      ]
    }
    assert_equal(['Place'], JsonPath.new("$..mentions[?(@['$type'] == 'Place')].$type").on(jsonld))
  end

  def test_underscore_in_filter
    jsonld = {
      'attributes' => [
        {
          'store' => [
            { 'with' => 'urn' },
            { 'with_underscore' => 'urn:1' }
          ]
        }
      ]
    }
    assert_equal(['urn:1'], JsonPath.new("$.attributes..store[?(@['with_underscore'] == 'urn:1')].with_underscore").on(jsonld))
  end

  def test_at_in_value
    jsonld = {
      'mentions' =>
         {
           'name' => 'Delimara Powerplant',
           'identifier' => 'krzana://took/powerstation/Delimara Powerplant',
           'type' => '@Place',
           'geo' => {
             'latitude' => 35.83020073454,
             'longitude' => 14.55602645874
           }
         }
    }
    assert_equal(['@Place'], JsonPath.new("$..mentions.type[?(@ == '@Place')]").on(jsonld))
  end

  def test_parens_in_value
    data = {
      'data' => {
        'number' => '(492) 080-3961'
      }
    }
    assert_equal [{ 'number' => '(492) 080-3961' }], JsonPath.new("$.data[?(@.number == '(492) 080-3961')]").on(data)
  end

  def test_boolean_parameter_value
    data = {
      'data' => [{
        'isTrue' => true,
        'name' => 'testname1'
      }, {
        'isTrue' => false,
        'name' => 'testname2'
      }]
    }
    assert_equal [{ 'isTrue' => true, 'name' => 'testname1' }], JsonPath.new('$.data[?(@.isTrue)]').on(data)
  end

  def test_regex
    assert_equal [], JsonPath.new('$..book[?(@.author =~ /herman/)]').on(@object)
    assert_equal [
      @object['store']['book'][2],
      @object['store']['book'][4],
      @object['store']['book'][5],
      @object['store']['book'][6]
    ], JsonPath.new('$..book[?(@.author =~ /herman|lukyanenko/i)]').on(@object)
    assert_equal %w[asdf asdf2], JsonPath.new('$.store.book..tags[?(@ =~ /asdf/)]').on(@object)
  end

  def test_regression_1
    json = {
      ok: true,
      channels: [
        {
          id: 'C09C5GYHF',
          name: 'general'
        },
        {
          id: 'C09C598QL',
          name: 'random'
        }
      ]
    }.to_json

    assert_equal 'C09C5GYHF', JsonPath.on(json, "$..channels[?(@.name == 'general')].id")[0]
  end

  def test_regression_2
    json = {
      ok: true,
      channels: [
        {
          id: 'C09C5GYHF',
          name: 'general',
          is_archived: false
        },
        {
          id: 'C09C598QL',
          name: 'random',
          is_archived: true
        }
      ]
    }.to_json

    assert_equal 'C09C5GYHF', JsonPath.on(json, '$..channels[?(@.is_archived == false)].id')[0]
  end

  def test_regression_3
    json = {
      ok: true,
      channels: [
        {
          id: 'C09C5GYHF',
          name: 'general',
          is_archived: false
        },
        {
          id: 'C09C598QL',
          name: 'random',
          is_archived: true
        }
      ]
    }.to_json

    assert_equal 'C09C598QL', JsonPath.on(json, '$..channels[?(@.is_archived)].id')[0]
  end

  def test_regression_4
    json = {
      ok: true,
      channels: [
        {
          id: 'C09C5GYHF',
          name: 'general',
          is_archived: false
        },
        {
          id: 'C09C598QL',
          name: 'random',
          is_archived: true
        }
      ]
    }.to_json

    assert_equal ['C09C5GYHF'], JsonPath.on(json, "$..channels[?(@.name == 'general')].id")
  end

  def test_regression_5
    json = {
      ok: true,
      channels: [
        {
          id: 'C09C5GYHF',
          name: 'general',
          is_archived: 'false'
        },
        {
          id: 'C09C598QL',
          name: 'random',
          is_archived: true
        }
      ]
    }.to_json

    assert_equal 'C09C5GYHF', JsonPath.on(json, "$..channels[?(@.is_archived == 'false')].id")[0]
  end

  def test_quote
    json = {
      channels: [
        {
          name: "King's Speech"
        }
      ]
    }.to_json

    assert_equal [{ 'name' => "King\'s Speech" }], JsonPath.on(json, "$..channels[?(@.name == 'King\'s Speech')]")
  end

  def test_curly_brackets
    data = {
      '{data}' => 'data'
    }
    assert_equal ['data'], JsonPath.new('$.{data}').on(data)
  end

  def test_symbolize
    data = '
    {
      "store": {
        "bicycle": {
          "price": 19.95,
          "color": "red"
        },
        "book": [
          {
            "price": 8.95,
            "category": "reference",
            "title": "Sayings of the Century",
            "author": "Nigel Rees"
          },
          {
            "price": 12.99,
            "category": "fiction",
            "title": "Sword of Honour",
            "author": "Evelyn Waugh"
          },
          {
            "price": 8.99,
            "category": "fiction",
            "isbn": "0-553-21311-3",
            "title": "Moby Dick",
            "author": "Herman Melville",
            "color": "blue"
          },
          {
            "price": 22.99,
            "category": "fiction",
            "isbn": "0-395-19395-8",
            "title": "The Lord of the Rings",
            "author": "Tolkien"
          }
        ]
      }
    }
    '
    assert_equal [{ price: 8.95, category: 'reference', title: 'Sayings of the Century', author: 'Nigel Rees' }, { price: 8.99, category: 'fiction', isbn: '0-553-21311-3', title: 'Moby Dick', author: 'Herman Melville', color: 'blue' }], JsonPath.new('$..book[::2]').on(data, symbolize_keys: true)
  end

  def test_changed
    json =
      {
        'snapshot' => {
          'objects' => {
            'whatever' => [
              {
                'column' => {
                  'name' => 'ASSOCIATE_FLAG',
                  'nullable' => true
                }
              },
              {
                'column' => {
                  'name' => 'AUTHOR',
                  'nullable' => false
                }
              }
            ]
          }
        }
      }
    assert_equal true, JsonPath.on(json, "$..column[?(@.name == 'ASSOCIATE_FLAG')].nullable")[0]
  end

  def test_another
    json = {
      initial: true,
      not: true
    }.to_json
    assert_equal [{ 'initial' => true, 'not' => true }], JsonPath.on(json, '$.[?(@.initial == true)]')
    json = {
      initial: false,
      not: true
    }.to_json
    assert_equal [], JsonPath.on(json, '$.initial[?(@)]')
    assert_equal [], JsonPath.on(json, '$.[?(@.initial == true)]')
    assert_equal [{ 'initial' => false, 'not' => true }], JsonPath.on(json, '$.[?(@.initial == false)]')
    json = {
      initial: 'false',
      not: true
    }.to_json
    assert_equal [{ 'initial' => 'false', 'not' => true }], JsonPath.on(json, "$.[?(@.initial == 'false')]")
    assert_equal [], JsonPath.on(json, '$.[?(@.initial == false)]')
  end

  def test_hanging
    json = { initial: true }.to_json
    success_path = '$.initial'
    assert_equal [true], JsonPath.on(json, success_path)
    broken_path = "$.initial\n"
    assert_equal [true], JsonPath.on(json, broken_path)
  end

  def test_complex_nested_grouping
    path = "$..book[?((@['author'] == 'Evelyn Waugh' || @['author'] == 'Herman Melville') && (@['price'] == 33 || @['price'] == 9))]"
    assert_equal [@object['store']['book'][2]], JsonPath.new(path).on(@object)
  end

  def test_complex_nested_grouping_unmatched_parent
    path = "$..book[?((@['author'] == 'Evelyn Waugh' || @['author'] == 'Herman Melville' && (@['price'] == 33 || @['price'] == 9))]"
    err = assert_raises(ArgumentError, 'should have raised an exception') { JsonPath.new(path).on(@object) }
    assert_match(/unmatched parenthesis in expression: \(\(false \|\| false && \(false \|\| true\)\)/, err.message)
  end

  def test_runtime_error_frozen_string
    skip('in ruby version below 2.2.0 this error is not raised') if Gem::Version.new(RUBY_VERSION) < Gem::Version.new('2.2.0')
    json = '
    {
      "test": "something"
    }
    '.to_json
    assert_raises(ArgumentError, "RuntimeError: character '|' not supported in query") do
      JsonPath.on(json, '$.description|title')
    end
  end

  def test_delete_more_items
    a = { 'itemList' =>
      [{ 'alfa' => 'beta1' },
       { 'alfa' => 'beta2' },
       { 'alfa' => 'beta3' },
       { 'alfa' => 'beta4' },
       { 'alfa' => 'beta5' },
       { 'alfa' => 'beta6' },
       { 'alfa' => 'beta7' },
       { 'alfa' => 'beta8' },
       { 'alfa' => 'beta9' },
       { 'alfa' => 'beta10' },
       { 'alfa' => 'beta11' },
       { 'alfa' => 'beta12' }] }
    expected = { 'itemList' => [{ 'alfa' => 'beta1' }] }
    assert_equal expected, JsonPath.for(a.to_json).delete('$.itemList[1:12:1]').to_hash
  end

  def test_delete_more_items_with_stepping
    a = { 'itemList' =>
      [{ 'alfa' => 'beta1' },
       { 'alfa' => 'beta2' },
       { 'alfa' => 'beta3' },
       { 'alfa' => 'beta4' },
       { 'alfa' => 'beta5' },
       { 'alfa' => 'beta6' },
       { 'alfa' => 'beta7' },
       { 'alfa' => 'beta8' },
       { 'alfa' => 'beta9' },
       { 'alfa' => 'beta10' },
       { 'alfa' => 'beta11' },
       { 'alfa' => 'beta12' }] }
    expected = { 'itemList' =>
    [{ 'alfa' => 'beta1' },
     { 'alfa' => 'beta3' },
     { 'alfa' => 'beta5' },
     { 'alfa' => 'beta7' },
     { 'alfa' => 'beta8' },
     { 'alfa' => 'beta9' },
     { 'alfa' => 'beta10' },
     { 'alfa' => 'beta11' },
     { 'alfa' => 'beta12' }] }
    assert_equal expected, JsonPath.for(a.to_json).delete('$.itemList[1:6:2]').to_hash
  end

  def example_object
    { 'store' => {
      'book' => [
        { 'category' => 'reference',
          'author' => 'Nigel Rees',
          'title' => 'Sayings of the Century',
          'price' => 9,
          'tags' => %w[asdf asdf2] },
        { 'category' => 'fiction',
          'author' => 'Evelyn Waugh',
          'title' => 'Sword of Honour',
          'price' => 13 },
        { 'category' => 'fiction',
          'author' => 'Herman Melville',
          'title' => 'Moby Dick',
          'isbn' => '0-553-21311-3',
          'price' => 9 },
        { 'category' => 'fiction',
          'author' => 'J. R. R. Tolkien',
          'title' => 'The Lord of the Rings',
          'isbn' => '0-395-19395-8',
          'price' => 23 },
        { 'category' => 'russian_fiction',
          'author' => 'Lukyanenko',
          'title' => 'Imperatory Illuziy',
          'written' => {
            'year' => 1995
          } },
        { 'category' => 'russian_fiction',
          'author' => 'Lukyanenko',
          'title' => 'Osennie Vizity',
          'written' => {
            'year' => 1996
          } },
        { 'category' => 'russian_fiction',
          'author' => 'Lukyanenko',
          'title' => 'Ne vremya dlya drakonov',
          'written' => {
            'year' => 1997
          } }
      ],
      'bicycle' => {
        'color' => 'red',
        'price' => 20,
        'catalogue_number' => 123_45,
        'single-speed' => 'no',
        '2seater' => 'yes',
        'make:model' => 'Zippy Sweetwheeler'
      },
      '@id' => 'http://example.org/store/42',
      '$meta-data' => 'whatevs',
      '_links' => { 'self' => {} }
    } }
  end
end