aboutsummaryrefslogtreecommitdiffstats
path: root/activesupport/test/ordered_hash_test.rb
blob: 72088854fc26a2fcf098e50a17f1ba2d45017836 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
require 'abstract_unit'
require 'active_support/json'
require 'active_support/core_ext/object/to_json'

class OrderedHashTest < Test::Unit::TestCase
  def setup
    @keys =   %w( blue   green  red    pink   orange )
    @values = %w( 000099 009900 aa0000 cc0066 cc6633 )
    @hash = Hash.new
    @ordered_hash = ActiveSupport::OrderedHash.new

    @keys.each_with_index do |key, index|
      @hash[key] = @values[index]
      @ordered_hash[key] = @values[index]
    end
  end

  def test_order
    assert_equal @keys,   @ordered_hash.keys
    assert_equal @values, @ordered_hash.values
  end

  def test_access
    assert @hash.all? { |k, v| @ordered_hash[k] == v }
  end

  def test_assignment
    key, value = 'purple', '5422a8'

    @ordered_hash[key] = value
    assert_equal @keys.length + 1, @ordered_hash.length
    assert_equal key, @ordered_hash.keys.last
    assert_equal value, @ordered_hash.values.last
    assert_equal value, @ordered_hash[key]
  end

  def test_delete
    key, value = 'white', 'ffffff'
    bad_key = 'black'

    @ordered_hash[key] = value
    assert_equal @keys.length + 1, @ordered_hash.length
    assert_equal @ordered_hash.keys.length, @ordered_hash.length

    assert_equal value, @ordered_hash.delete(key)
    assert_equal @keys.length, @ordered_hash.length
    assert_equal @ordered_hash.keys.length, @ordered_hash.length

    assert_nil @ordered_hash.delete(bad_key)
  end

  def test_to_hash
    assert_same @ordered_hash, @ordered_hash.to_hash
  end

  def test_to_a
    assert_equal @keys.zip(@values), @ordered_hash.to_a
  end

  def test_has_key
    assert_equal true, @ordered_hash.has_key?('blue')
    assert_equal true, @ordered_hash.key?('blue')
    assert_equal true, @ordered_hash.include?('blue')
    assert_equal true, @ordered_hash.member?('blue')

    assert_equal false, @ordered_hash.has_key?('indigo')
    assert_equal false, @ordered_hash.key?('indigo')
    assert_equal false, @ordered_hash.include?('indigo')
    assert_equal false, @ordered_hash.member?('indigo')
  end

  def test_has_value
    assert_equal true, @ordered_hash.has_value?('000099')
    assert_equal true, @ordered_hash.value?('000099')
    assert_equal false, @ordered_hash.has_value?('ABCABC')
    assert_equal false, @ordered_hash.value?('ABCABC')
  end

  def test_each_key
    keys = []
    @ordered_hash.each_key { |k| keys << k }
    assert_equal @keys, keys
  end

  def test_each_value
    values = []
    @ordered_hash.each_value { |v| values << v }
    assert_equal @values, values
  end

  def test_each
    values = []
    @ordered_hash.each {|key, value| values << value}
    assert_equal @values, values
  end

  def test_each_with_index
    @ordered_hash.each_with_index { |pair, index| assert_equal [@keys[index], @values[index]], pair}
  end

  def test_each_pair
    values = []
    keys = []
    @ordered_hash.each_pair do |key, value|
      keys << key
      values << value
    end
    assert_equal @values, values
    assert_equal @keys, keys
  end

  def test_find_all
    assert_equal @keys, @ordered_hash.find_all { true }.map(&:first)
  end

  def test_select
    assert_equal @keys, @ordered_hash.select { true }.map(&:first)
  end

  def test_delete_if
    copy = @ordered_hash.dup
    copy.delete('pink')
    assert_equal copy, @ordered_hash.delete_if { |k, _| k == 'pink' }
    assert !@ordered_hash.keys.include?('pink')
  end

  def test_reject!
    (copy = @ordered_hash.dup).delete('pink')
    @ordered_hash.reject! { |k, _| k == 'pink' }
    assert_equal copy, @ordered_hash
    assert !@ordered_hash.keys.include?('pink')
  end

  def test_reject
    copy = @ordered_hash.dup
    new_ordered_hash = @ordered_hash.reject { |k, _| k == 'pink' }
    assert_equal copy, @ordered_hash
    assert !new_ordered_hash.keys.include?('pink')
    assert @ordered_hash.keys.include?('pink')
  end

  def test_clear
    @ordered_hash.clear
    assert_equal [], @ordered_hash.keys
  end

  def test_merge
    other_hash =  ActiveSupport::OrderedHash.new
    other_hash['purple'] = '800080'
    other_hash['violet'] = 'ee82ee'
    merged = @ordered_hash.merge other_hash
    assert_equal merged.length, @ordered_hash.length + other_hash.length
    assert_equal @keys + ['purple', 'violet'], merged.keys
  end

  def test_merge_with_block
    hash = ActiveSupport::OrderedHash.new
    hash[:a] = 0
    hash[:b] = 0
    merged = hash.merge(:b => 2, :c => 7) do |key, old_value, new_value|
      new_value + 1
    end

    assert_equal 0, merged[:a]
    assert_equal 3, merged[:b]
    assert_equal 7, merged[:c]
  end

  def test_merge_bang_with_block
    hash = ActiveSupport::OrderedHash.new
    hash[:a] = 0
    hash[:b] = 0
    hash.merge!(:a => 1, :c => 7) do |key, old_value, new_value|
      new_value + 3
    end

    assert_equal 4, hash[:a]
    assert_equal 0, hash[:b]
    assert_equal 7, hash[:c]
  end

  def test_shift
    pair = @ordered_hash.shift
    assert_equal [@keys.first, @values.first], pair
    assert !@ordered_hash.keys.include?(pair.first)
  end

  def test_keys
    original = @ordered_hash.keys.dup
    @ordered_hash.keys.pop
    assert_equal original, @ordered_hash.keys
  end

  def test_inspect
    assert @ordered_hash.inspect.include?(@hash.inspect)
  end

  def test_json
    ordered_hash = ActiveSupport::OrderedHash[:foo, :bar]
    hash = Hash[:foo, :bar]
    assert_equal ordered_hash.to_json, hash.to_json
  end

  def test_alternate_initialization_with_splat
    alternate = ActiveSupport::OrderedHash[1,2,3,4]
    assert_kind_of ActiveSupport::OrderedHash, alternate
    assert_equal [1, 3], alternate.keys
  end

  def test_alternate_initialization_with_array
    alternate = ActiveSupport::OrderedHash[ [
      [1, 2],
      [3, 4],
      "bad key value pair",
      [ 'missing value' ]
    ]]

    assert_kind_of ActiveSupport::OrderedHash, alternate
    assert_equal [1, 3, 'missing value'], alternate.keys
    assert_equal [2, 4, nil ], alternate.values
  end

  def test_alternate_initialization_raises_exception_on_odd_length_args
    begin
      ActiveSupport::OrderedHash[1,2,3,4,5]
      flunk "Hash::[] should have raised an exception on initialization " +
          "with an odd number of parameters"
    rescue ArgumentError => e
      assert_equal "odd number of arguments for Hash", e.message
    end
  end

  def test_replace_updates_keys
    @other_ordered_hash = ActiveSupport::OrderedHash[:black, '000000', :white, '000000']
    original = @ordered_hash.replace(@other_ordered_hash)
    assert_same original, @ordered_hash
    assert_equal @other_ordered_hash.keys, @ordered_hash.keys
  end

  def test_each_after_yaml_serialization
    values = []
    @deserialized_ordered_hash = YAML::load(YAML::dump(@ordered_hash))

    @deserialized_ordered_hash.each {|key, value| values << value}
    assert_equal @values, values
  end

  def test_order_after_yaml_serialization
    @deserialized_ordered_hash = YAML::load(YAML::dump(@ordered_hash))

    assert_equal @keys,   @deserialized_ordered_hash.keys
    assert_equal @values, @deserialized_ordered_hash.values
  end

  def test_order_after_yaml_serialization_with_nested_arrays
    @ordered_hash[:array] = %w(a b c)

    @deserialized_ordered_hash = YAML::load(YAML::dump(@ordered_hash))

    assert_equal @ordered_hash.keys,   @deserialized_ordered_hash.keys
    assert_equal @ordered_hash.values, @deserialized_ordered_hash.values
  end

  def test_update_sets_keys
    @updated_ordered_hash = ActiveSupport::OrderedHash.new
    @updated_ordered_hash.update(:name => "Bob")
    assert_equal [:name],  @updated_ordered_hash.keys
  end

  def test_invert
    expected = ActiveSupport::OrderedHash[@values.zip(@keys)]
    assert_equal expected, @ordered_hash.invert
    assert_equal @values.zip(@keys), @ordered_hash.invert.to_a
  end
end