aboutsummaryrefslogtreecommitdiffstats
path: root/activesupport/test/caching_test.rb
blob: 8e22d4ed2fd5a9529a6c86321f2fade5991556ee (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
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
require 'logger'
require 'abstract_unit'
require 'active_support/cache'
require 'dependencies_test_helpers'

module ActiveSupport
  module Cache
    module Strategy
      module LocalCache
        class MiddlewareTest < ActiveSupport::TestCase
          def test_local_cache_cleared_on_close
            key = "super awesome key"
            assert_nil LocalCacheRegistry.cache_for key
            middleware = Middleware.new('<3', key).new(->(env) {
              assert LocalCacheRegistry.cache_for(key), 'should have a cache'
              [200, {}, []]
            })
            _, _, body = middleware.call({})
            assert LocalCacheRegistry.cache_for(key), 'should still have a cache'
            body.each { }
            assert LocalCacheRegistry.cache_for(key), 'should still have a cache'
            body.close
            assert_nil LocalCacheRegistry.cache_for(key)
          end

          def test_local_cache_cleared_on_exception
            key = "super awesome key"
            assert_nil LocalCacheRegistry.cache_for key
            middleware = Middleware.new('<3', key).new(->(env) {
              assert LocalCacheRegistry.cache_for(key), 'should have a cache'
              raise
            })
            assert_raises(RuntimeError) { middleware.call({}) }
            assert_nil LocalCacheRegistry.cache_for(key)
          end
        end
      end
    end
  end
end

class CacheKeyTest < ActiveSupport::TestCase
  def test_entry_legacy_optional_ivars
    legacy = Class.new(ActiveSupport::Cache::Entry) do
      def initialize(value, options = {})
        @value = value
        @expires_in = nil
        @created_at = nil
        super
      end
    end

    entry = legacy.new 'foo'
    assert_equal 'foo', entry.value
  end

  def test_expand_cache_key
    assert_equal '1/2/true', ActiveSupport::Cache.expand_cache_key([1, '2', true])
    assert_equal 'name/1/2/true', ActiveSupport::Cache.expand_cache_key([1, '2', true], :name)
  end

  def test_expand_cache_key_with_rails_cache_id
    with_env('RAILS_CACHE_ID' => 'c99') do
      assert_equal 'c99/foo', ActiveSupport::Cache.expand_cache_key(:foo)
      assert_equal 'c99/foo', ActiveSupport::Cache.expand_cache_key([:foo])
      assert_equal 'c99/foo/bar', ActiveSupport::Cache.expand_cache_key([:foo, :bar])
      assert_equal 'nm/c99/foo', ActiveSupport::Cache.expand_cache_key(:foo, :nm)
      assert_equal 'nm/c99/foo', ActiveSupport::Cache.expand_cache_key([:foo], :nm)
      assert_equal 'nm/c99/foo/bar', ActiveSupport::Cache.expand_cache_key([:foo, :bar], :nm)
    end
  end

  def test_expand_cache_key_with_rails_app_version
    with_env('RAILS_APP_VERSION' => 'rails3') do
      assert_equal 'rails3/foo', ActiveSupport::Cache.expand_cache_key(:foo)
    end
  end

  def test_expand_cache_key_rails_cache_id_should_win_over_rails_app_version
    with_env('RAILS_CACHE_ID' => 'c99', 'RAILS_APP_VERSION' => 'rails3') do
      assert_equal 'c99/foo', ActiveSupport::Cache.expand_cache_key(:foo)
    end
  end

  def test_expand_cache_key_respond_to_cache_key
    key = 'foo'
    def key.cache_key
      :foo_key
    end
    assert_equal 'foo_key', ActiveSupport::Cache.expand_cache_key(key)
  end

  def test_expand_cache_key_array_with_something_that_responds_to_cache_key
    key = 'foo'
    def key.cache_key
      :foo_key
    end
    assert_equal 'foo_key', ActiveSupport::Cache.expand_cache_key([key])
  end

  def test_expand_cache_key_of_nil
    assert_equal '', ActiveSupport::Cache.expand_cache_key(nil)
  end

  def test_expand_cache_key_of_false
    assert_equal 'false', ActiveSupport::Cache.expand_cache_key(false)
  end

  def test_expand_cache_key_of_true
    assert_equal 'true', ActiveSupport::Cache.expand_cache_key(true)
  end

  def test_expand_cache_key_of_array_like_object
    assert_equal 'foo/bar/baz', ActiveSupport::Cache.expand_cache_key(%w{foo bar baz}.to_enum)
  end

  private

  def with_env(kv)
    old_values = {}
    kv.each { |key, value| old_values[key], ENV[key] = ENV[key], value }
    yield
  ensure
    old_values.each { |key, value| ENV[key] = value}
  end
end

class CacheStoreSettingTest < ActiveSupport::TestCase
  def test_file_fragment_cache_store
    store = ActiveSupport::Cache.lookup_store :file_store, "/path/to/cache/directory"
    assert_kind_of(ActiveSupport::Cache::FileStore, store)
    assert_equal "/path/to/cache/directory", store.cache_path
  end

  def test_mem_cache_fragment_cache_store
    Dalli::Client.expects(:new).with(%w[localhost], {})
    store = ActiveSupport::Cache.lookup_store :mem_cache_store, "localhost"
    assert_kind_of(ActiveSupport::Cache::MemCacheStore, store)
  end

  def test_mem_cache_fragment_cache_store_with_given_mem_cache
    mem_cache = Dalli::Client.new
    Dalli::Client.expects(:new).never
    store = ActiveSupport::Cache.lookup_store :mem_cache_store, mem_cache
    assert_kind_of(ActiveSupport::Cache::MemCacheStore, store)
  end

  def test_mem_cache_fragment_cache_store_with_not_dalli_client
    Dalli::Client.expects(:new).never
    memcache = Object.new
    assert_raises(ArgumentError) do
      ActiveSupport::Cache.lookup_store :mem_cache_store, memcache
    end
  end

  def test_mem_cache_fragment_cache_store_with_multiple_servers
    Dalli::Client.expects(:new).with(%w[localhost 192.168.1.1], {})
    store = ActiveSupport::Cache.lookup_store :mem_cache_store, "localhost", '192.168.1.1'
    assert_kind_of(ActiveSupport::Cache::MemCacheStore, store)
  end

  def test_mem_cache_fragment_cache_store_with_options
    Dalli::Client.expects(:new).with(%w[localhost 192.168.1.1], { :timeout => 10 })
    store = ActiveSupport::Cache.lookup_store :mem_cache_store, "localhost", '192.168.1.1', :namespace => 'foo', :timeout => 10
    assert_kind_of(ActiveSupport::Cache::MemCacheStore, store)
    assert_equal 'foo', store.options[:namespace]
  end

  def test_object_assigned_fragment_cache_store
    store = ActiveSupport::Cache.lookup_store ActiveSupport::Cache::FileStore.new("/path/to/cache/directory")
    assert_kind_of(ActiveSupport::Cache::FileStore, store)
    assert_equal "/path/to/cache/directory", store.cache_path
  end
end

class CacheStoreNamespaceTest < ActiveSupport::TestCase
  def test_static_namespace
    cache = ActiveSupport::Cache.lookup_store(:memory_store, :namespace => "tester")
    cache.write("foo", "bar")
    assert_equal "bar", cache.read("foo")
    assert_equal "bar", cache.instance_variable_get(:@data)["tester:foo"].value
  end

  def test_proc_namespace
    test_val = "tester"
    proc = lambda{test_val}
    cache = ActiveSupport::Cache.lookup_store(:memory_store, :namespace => proc)
    cache.write("foo", "bar")
    assert_equal "bar", cache.read("foo")
    assert_equal "bar", cache.instance_variable_get(:@data)["tester:foo"].value
  end

  def test_delete_matched_key_start
    cache = ActiveSupport::Cache.lookup_store(:memory_store, :namespace => "tester")
    cache.write("foo", "bar")
    cache.write("fu", "baz")
    cache.delete_matched(/^fo/)
    assert !cache.exist?("foo")
    assert cache.exist?("fu")
  end

  def test_delete_matched_key
    cache = ActiveSupport::Cache.lookup_store(:memory_store, :namespace => "foo")
    cache.write("foo", "bar")
    cache.write("fu", "baz")
    cache.delete_matched(/OO/i)
    assert !cache.exist?("foo")
    assert cache.exist?("fu")
  end
end

# Tests the base functionality that should be identical across all cache stores.
module CacheStoreBehavior
  def test_should_read_and_write_strings
    assert @cache.write('foo', 'bar')
    assert_equal 'bar', @cache.read('foo')
  end

  def test_should_overwrite
    @cache.write('foo', 'bar')
    @cache.write('foo', 'baz')
    assert_equal 'baz', @cache.read('foo')
  end

  def test_fetch_without_cache_miss
    @cache.write('foo', 'bar')
    @cache.expects(:write).never
    assert_equal 'bar', @cache.fetch('foo') { 'baz' }
  end

  def test_fetch_with_cache_miss
    @cache.expects(:write).with('foo', 'baz', @cache.options)
    assert_equal 'baz', @cache.fetch('foo') { 'baz' }
  end

  def test_fetch_with_cache_miss_passes_key_to_block
    cache_miss = false
    assert_equal 3, @cache.fetch('foo') { |key| cache_miss = true; key.length }
    assert cache_miss

    cache_miss = false
    assert_equal 3, @cache.fetch('foo') { |key| cache_miss = true; key.length }
    assert !cache_miss
  end

  def test_fetch_with_forced_cache_miss
    @cache.write('foo', 'bar')
    @cache.expects(:read).never
    @cache.expects(:write).with('foo', 'bar', @cache.options.merge(:force => true))
    @cache.fetch('foo', :force => true) { 'bar' }
  end

  def test_fetch_with_cached_nil
    @cache.write('foo', nil)
    @cache.expects(:write).never
    assert_nil @cache.fetch('foo') { 'baz' }
  end

  def test_should_read_and_write_hash
    assert @cache.write('foo', {:a => "b"})
    assert_equal({:a => "b"}, @cache.read('foo'))
  end

  def test_should_read_and_write_integer
    assert @cache.write('foo', 1)
    assert_equal 1, @cache.read('foo')
  end

  def test_should_read_and_write_nil
    assert @cache.write('foo', nil)
    assert_equal nil, @cache.read('foo')
  end

  def test_should_read_and_write_false
    assert @cache.write('foo', false)
    assert_equal false, @cache.read('foo')
  end

  def test_read_multi
    @cache.write('foo', 'bar')
    @cache.write('fu', 'baz')
    @cache.write('fud', 'biz')
    assert_equal({"foo" => "bar", "fu" => "baz"}, @cache.read_multi('foo', 'fu'))
  end

  def test_read_multi_with_expires
    time = Time.now
    @cache.write('foo', 'bar', :expires_in => 10)
    @cache.write('fu', 'baz')
    @cache.write('fud', 'biz')
    Time.stub(:now, time + 11) do
      assert_equal({"fu" => "baz"}, @cache.read_multi('foo', 'fu'))
    end
  end

  def test_fetch_multi
    @cache.write('foo', 'bar')
    @cache.write('fud', 'biz')

    values = @cache.fetch_multi('foo', 'fu', 'fud') { |value| value * 2 }

    assert_equal({ 'foo' => 'bar', 'fu' => 'fufu', 'fud' => 'biz' }, values)
    assert_equal('fufu', @cache.read('fu'))
  end

  def test_multi_with_objects
    foo = stub(:title => 'FOO!', :cache_key => 'foo')
    bar = stub(:cache_key => 'bar')

    @cache.write('bar', 'BAM!')

    values = @cache.fetch_multi(foo, bar) { |object| object.title }

    assert_equal({ foo => 'FOO!', bar => 'BAM!' }, values)
  end

  def test_read_and_write_compressed_small_data
    @cache.write('foo', 'bar', :compress => true)
    assert_equal 'bar', @cache.read('foo')
  end

  def test_read_and_write_compressed_large_data
    @cache.write('foo', 'bar', :compress => true, :compress_threshold => 2)
    assert_equal 'bar', @cache.read('foo')
  end

  def test_read_and_write_compressed_nil
    @cache.write('foo', nil, :compress => true)
    assert_nil @cache.read('foo')
  end

  def test_cache_key
    obj = Object.new
    def obj.cache_key
      :foo
    end
    @cache.write(obj, "bar")
    assert_equal "bar", @cache.read("foo")
  end

  def test_param_as_cache_key
    obj = Object.new
    def obj.to_param
      "foo"
    end
    @cache.write(obj, "bar")
    assert_equal "bar", @cache.read("foo")
  end

  def test_array_as_cache_key
    @cache.write([:fu, "foo"], "bar")
    assert_equal "bar", @cache.read("fu/foo")
  end

  def test_hash_as_cache_key
    @cache.write({:foo => 1, :fu => 2}, "bar")
    assert_equal "bar", @cache.read("foo=1/fu=2")
  end

  def test_keys_are_case_sensitive
    @cache.write("foo", "bar")
    assert_nil @cache.read("FOO")
  end

  def test_exist
    @cache.write('foo', 'bar')
    assert_equal true, @cache.exist?('foo')
    assert_equal false, @cache.exist?('bar')
  end

  def test_nil_exist
    @cache.write('foo', nil)
    assert @cache.exist?('foo')
  end

  def test_delete
    @cache.write('foo', 'bar')
    assert @cache.exist?('foo')
    assert @cache.delete('foo')
    assert !@cache.exist?('foo')
  end

  def test_original_store_objects_should_not_be_immutable
    bar = 'bar'
    @cache.write('foo', bar)
    assert_nothing_raised { bar.gsub!(/.*/, 'baz') }
  end

  def test_expires_in
    time = Time.local(2008, 4, 24)

    Time.stub(:now, time) do
      @cache.write('foo', 'bar')
      assert_equal 'bar', @cache.read('foo')
    end

    Time.stub(:now, time + 30) do
      assert_equal 'bar', @cache.read('foo')
    end

    Time.stub(:now, time + 61) do
      assert_nil @cache.read('foo')
    end
  end

  def test_race_condition_protection_skipped_if_not_defined
    @cache.write('foo', 'bar')
    time = @cache.send(:read_entry, 'foo', {}).expires_at

    Time.stub(:now, Time.at(time)) do
      result = @cache.fetch('foo') do
        assert_equal nil, @cache.read('foo')
        'baz'
      end
      assert_equal 'baz', result
    end
  end

  def test_race_condition_protection_is_limited
    time = Time.now
    @cache.write('foo', 'bar', :expires_in => 60)
    Time.stub(:now, time + 71) do
      result = @cache.fetch('foo', :race_condition_ttl => 10) do
        assert_equal nil, @cache.read('foo')
        "baz"
      end
      assert_equal "baz", result
    end
  end

  def test_race_condition_protection_is_safe
    time = Time.now
    @cache.write('foo', 'bar', :expires_in => 60)
    Time.stub(:now, time + 61) do
      begin
        @cache.fetch('foo', :race_condition_ttl => 10) do
          assert_equal 'bar', @cache.read('foo')
          raise ArgumentError.new
        end
      rescue ArgumentError
      end
      assert_equal "bar", @cache.read('foo')
    end
    Time.stub(:now, time + 91) do
      assert_nil @cache.read('foo')
    end
  end

  def test_race_condition_protection
    time = Time.now
    @cache.write('foo', 'bar', :expires_in => 60)
    Time.stub(:now, time + 61) do
      result = @cache.fetch('foo', :race_condition_ttl => 10) do
        assert_equal 'bar', @cache.read('foo')
        "baz"
      end
      assert_equal "baz", result
    end
  end

  def test_crazy_key_characters
    crazy_key = "#/:*(<+=> )&$%@?;'\"\'`~-"
    assert @cache.write(crazy_key, "1", :raw => true)
    assert_equal "1", @cache.read(crazy_key)
    assert_equal "1", @cache.fetch(crazy_key)
    assert @cache.delete(crazy_key)
    assert_equal "2", @cache.fetch(crazy_key, :raw => true) { "2" }
    assert_equal 3, @cache.increment(crazy_key)
    assert_equal 2, @cache.decrement(crazy_key)
  end

  def test_really_long_keys
    key = ""
    900.times{key << "x"}
    assert @cache.write(key, "bar")
    assert_equal "bar", @cache.read(key)
    assert_equal "bar", @cache.fetch(key)
    assert_nil @cache.read("#{key}x")
    assert_equal({key => "bar"}, @cache.read_multi(key))
    assert @cache.delete(key)
  end
end

# https://rails.lighthouseapp.com/projects/8994/tickets/6225-memcachestore-cant-deal-with-umlauts-and-special-characters
# The error is caused by character encodings that can't be compared with ASCII-8BIT regular expressions and by special
# characters like the umlaut in UTF-8.
module EncodedKeyCacheBehavior
  Encoding.list.each do |encoding|
    define_method "test_#{encoding.name.underscore}_encoded_values" do
      key = "foo".force_encoding(encoding)
      assert @cache.write(key, "1", :raw => true)
      assert_equal "1", @cache.read(key)
      assert_equal "1", @cache.fetch(key)
      assert @cache.delete(key)
      assert_equal "2", @cache.fetch(key, :raw => true) { "2" }
      assert_equal 3, @cache.increment(key)
      assert_equal 2, @cache.decrement(key)
    end
  end

  def test_common_utf8_values
    key = "\xC3\xBCmlaut".force_encoding(Encoding::UTF_8)
    assert @cache.write(key, "1", :raw => true)
    assert_equal "1", @cache.read(key)
    assert_equal "1", @cache.fetch(key)
    assert @cache.delete(key)
    assert_equal "2", @cache.fetch(key, :raw => true) { "2" }
    assert_equal 3, @cache.increment(key)
    assert_equal 2, @cache.decrement(key)
  end

  def test_retains_encoding
    key = "\xC3\xBCmlaut".force_encoding(Encoding::UTF_8)
    assert @cache.write(key, "1", :raw => true)
    assert_equal Encoding::UTF_8, key.encoding
  end
end

module CacheDeleteMatchedBehavior
  def test_delete_matched
    @cache.write("foo", "bar")
    @cache.write("fu", "baz")
    @cache.write("foo/bar", "baz")
    @cache.write("fu/baz", "bar")
    @cache.delete_matched(/oo/)
    assert !@cache.exist?("foo")
    assert @cache.exist?("fu")
    assert !@cache.exist?("foo/bar")
    assert @cache.exist?("fu/baz")
  end
end

module CacheIncrementDecrementBehavior
  def test_increment
    @cache.write('foo', 1, :raw => true)
    assert_equal 1, @cache.read('foo').to_i
    assert_equal 2, @cache.increment('foo')
    assert_equal 2, @cache.read('foo').to_i
    assert_equal 3, @cache.increment('foo')
    assert_equal 3, @cache.read('foo').to_i
    assert_nil @cache.increment('bar')
  end

  def test_decrement
    @cache.write('foo', 3, :raw => true)
    assert_equal 3, @cache.read('foo').to_i
    assert_equal 2, @cache.decrement('foo')
    assert_equal 2, @cache.read('foo').to_i
    assert_equal 1, @cache.decrement('foo')
    assert_equal 1, @cache.read('foo').to_i
    assert_nil @cache.decrement('bar')
  end
end

module LocalCacheBehavior
  def test_local_writes_are_persistent_on_the_remote_cache
    retval = @cache.with_local_cache do
      @cache.write('foo', 'bar')
    end
    assert retval
    assert_equal 'bar', @cache.read('foo')
  end

  def test_clear_also_clears_local_cache
    @cache.with_local_cache do
      @cache.write('foo', 'bar')
      @cache.clear
      assert_nil @cache.read('foo')
    end

    assert_nil @cache.read('foo')
  end

  def test_local_cache_of_write
    @cache.with_local_cache do
      @cache.write('foo', 'bar')
      @peek.delete('foo')
      assert_equal 'bar', @cache.read('foo')
    end
  end

  def test_local_cache_of_read
    @cache.write('foo', 'bar')
    @cache.with_local_cache do
      assert_equal 'bar', @cache.read('foo')
    end
  end

  def test_local_cache_of_write_nil
    @cache.with_local_cache do
      assert @cache.write('foo', nil)
      assert_nil @cache.read('foo')
      @peek.write('foo', 'bar')
      assert_nil @cache.read('foo')
    end
  end

  def test_local_cache_of_delete
    @cache.with_local_cache do
      @cache.write('foo', 'bar')
      @cache.delete('foo')
      assert_nil @cache.read('foo')
    end
  end

  def test_local_cache_of_exist
    @cache.with_local_cache do
      @cache.write('foo', 'bar')
      @peek.delete('foo')
      assert @cache.exist?('foo')
    end
  end

  def test_local_cache_of_increment
    @cache.with_local_cache do
      @cache.write('foo', 1, :raw => true)
      @peek.write('foo', 2, :raw => true)
      @cache.increment('foo')
      assert_equal 3, @cache.read('foo')
    end
  end

  def test_local_cache_of_decrement
    @cache.with_local_cache do
      @cache.write('foo', 1, :raw => true)
      @peek.write('foo', 3, :raw => true)
      @cache.decrement('foo')
      assert_equal 2, @cache.read('foo')
    end
  end

  def test_middleware
    app = lambda { |env|
      result = @cache.write('foo', 'bar')
      assert_equal 'bar', @cache.read('foo') # make sure 'foo' was written
      assert result
      [200, {}, []]
    }
    app = @cache.middleware.new(app)
    app.call({})
  end
end

module AutoloadingCacheBehavior
  include DependenciesTestHelpers
  def test_simple_autoloading
    with_autoloading_fixtures do
      @cache.write('foo', EM.new)
    end

    remove_constants(:EM)
    ActiveSupport::Dependencies.clear

    with_autoloading_fixtures do
      assert_kind_of EM, @cache.read('foo')
    end

    remove_constants(:EM)
    ActiveSupport::Dependencies.clear
  end

  def test_two_classes_autoloading
    with_autoloading_fixtures do
      @cache.write('foo', [EM.new, ClassFolder.new])
    end

    remove_constants(:EM, :ClassFolder)
    ActiveSupport::Dependencies.clear

    with_autoloading_fixtures do
      loaded = @cache.read('foo')
      assert_kind_of Array, loaded
      assert_equal 2, loaded.size
      assert_kind_of EM, loaded[0]
      assert_kind_of ClassFolder, loaded[1]
    end

    remove_constants(:EM, :ClassFolder)
    ActiveSupport::Dependencies.clear
  end
end

class FileStoreTest < ActiveSupport::TestCase
  def setup
    Dir.mkdir(cache_dir) unless File.exist?(cache_dir)
    @cache = ActiveSupport::Cache.lookup_store(:file_store, cache_dir, :expires_in => 60)
    @peek = ActiveSupport::Cache.lookup_store(:file_store, cache_dir, :expires_in => 60)
    @cache_with_pathname = ActiveSupport::Cache.lookup_store(:file_store, Pathname.new(cache_dir), :expires_in => 60)

    @buffer = StringIO.new
    @cache.logger = ActiveSupport::Logger.new(@buffer)
  end

  def teardown
    FileUtils.rm_r(cache_dir)
  rescue Errno::ENOENT
  end

  def cache_dir
    File.join(Dir.pwd, 'tmp_cache')
  end

  include CacheStoreBehavior
  include LocalCacheBehavior
  include CacheDeleteMatchedBehavior
  include CacheIncrementDecrementBehavior
  include AutoloadingCacheBehavior

  def test_clear
    filepath = File.join(cache_dir, ".gitkeep")
    FileUtils.touch(filepath)
    @cache.clear
    assert File.exist?(filepath)
  end

  def test_clear_without_cache_dir
    FileUtils.rm_r(cache_dir)
    @cache.clear
  end

  def test_long_keys
    @cache.write("a"*10000, 1)
    assert_equal 1, @cache.read("a"*10000)
  end

  def test_key_transformation
    key = @cache.send(:key_file_path, "views/index?id=1")
    assert_equal "views/index?id=1", @cache.send(:file_path_key, key)
  end

  def test_key_transformation_with_pathname
    FileUtils.touch(File.join(cache_dir, "foo"))
    key = @cache_with_pathname.send(:key_file_path, "views/index?id=1")
    assert_equal "views/index?id=1", @cache_with_pathname.send(:file_path_key, key)
  end

  # Test that generated cache keys are short enough to have Tempfile stuff added to them and
  # remain valid
  def test_filename_max_size
    key = "#{'A' * ActiveSupport::Cache::FileStore::FILENAME_MAX_SIZE}"
    path = @cache.send(:key_file_path, key)
    Dir::Tmpname.create(path) do |tmpname, n, opts|
      assert File.basename(tmpname+'.lock').length <= 255, "Temp filename too long: #{File.basename(tmpname+'.lock').length}"
    end
  end

  # Because file systems have a maximum filename size, filenames > max size should be split in to directories
  # If filename is 'AAAAB', where max size is 4, the returned path should be AAAA/B
  def test_key_transformation_max_filename_size
    key = "#{'A' * ActiveSupport::Cache::FileStore::FILENAME_MAX_SIZE}B"
    path = @cache.send(:key_file_path, key)
    assert path.split('/').all? { |dir_name| dir_name.size <= ActiveSupport::Cache::FileStore::FILENAME_MAX_SIZE}
    assert_equal 'B', File.basename(path)
  end

  # If nothing has been stored in the cache, there is a chance the cache directory does not yet exist
  # Ensure delete_matched gracefully handles this case
  def test_delete_matched_when_cache_directory_does_not_exist
    assert_nothing_raised(Exception) do
      ActiveSupport::Cache::FileStore.new('/test/cache/directory').delete_matched(/does_not_exist/)
    end
  end

  def test_delete_does_not_delete_empty_parent_dir
    sub_cache_dir = File.join(cache_dir, 'subdir/')
    sub_cache_store = ActiveSupport::Cache::FileStore.new(sub_cache_dir)
    assert_nothing_raised(Exception) do
      assert sub_cache_store.write('foo', 'bar')
      assert sub_cache_store.delete('foo')
    end
    assert File.exist?(cache_dir), "Parent of top level cache dir was deleted!"
    assert File.exist?(sub_cache_dir), "Top level cache dir was deleted!"
    assert Dir.entries(sub_cache_dir).reject {|f| ActiveSupport::Cache::FileStore::EXCLUDED_DIRS.include?(f)}.empty?
  end

  def test_log_exception_when_cache_read_fails
    File.expects(:exist?).raises(StandardError, "failed")
    @cache.send(:read_entry, "winston", {})
    assert @buffer.string.present?
  end

  def test_cleanup_removes_all_expired_entries
    time = Time.now
    @cache.write('foo', 'bar', expires_in: 10)
    @cache.write('baz', 'qux')
    @cache.write('quux', 'corge', expires_in: 20)
    Time.stub(:now, time + 15) do
      @cache.cleanup
      assert_not @cache.exist?('foo')
      assert @cache.exist?('baz')
      assert @cache.exist?('quux')
    end
  end

  def test_write_with_unless_exist
    assert_equal true, @cache.write(1, "aaaaaaaaaa")
    assert_equal false, @cache.write(1, "aaaaaaaaaa", unless_exist: true)
    @cache.write(1, nil)
    assert_equal false, @cache.write(1, "aaaaaaaaaa", unless_exist: true)
  end
end

class MemoryStoreTest < ActiveSupport::TestCase
  def setup
    @record_size = ActiveSupport::Cache.lookup_store(:memory_store).send(:cached_size, 1, ActiveSupport::Cache::Entry.new("aaaaaaaaaa"))
    @cache = ActiveSupport::Cache.lookup_store(:memory_store, :expires_in => 60, :size => @record_size * 10 + 1)
  end

  include CacheStoreBehavior
  include CacheDeleteMatchedBehavior
  include CacheIncrementDecrementBehavior

  def test_prune_size
    @cache.write(1, "aaaaaaaaaa") && sleep(0.001)
    @cache.write(2, "bbbbbbbbbb") && sleep(0.001)
    @cache.write(3, "cccccccccc") && sleep(0.001)
    @cache.write(4, "dddddddddd") && sleep(0.001)
    @cache.write(5, "eeeeeeeeee") && sleep(0.001)
    @cache.read(2) && sleep(0.001)
    @cache.read(4)
    @cache.prune(@record_size * 3)
    assert @cache.exist?(5)
    assert @cache.exist?(4)
    assert !@cache.exist?(3), "no entry"
    assert @cache.exist?(2)
    assert !@cache.exist?(1), "no entry"
  end

  def test_prune_size_on_write
    @cache.write(1, "aaaaaaaaaa") && sleep(0.001)
    @cache.write(2, "bbbbbbbbbb") && sleep(0.001)
    @cache.write(3, "cccccccccc") && sleep(0.001)
    @cache.write(4, "dddddddddd") && sleep(0.001)
    @cache.write(5, "eeeeeeeeee") && sleep(0.001)
    @cache.write(6, "ffffffffff") && sleep(0.001)
    @cache.write(7, "gggggggggg") && sleep(0.001)
    @cache.write(8, "hhhhhhhhhh") && sleep(0.001)
    @cache.write(9, "iiiiiiiiii") && sleep(0.001)
    @cache.write(10, "kkkkkkkkkk") && sleep(0.001)
    @cache.read(2) && sleep(0.001)
    @cache.read(4) && sleep(0.001)
    @cache.write(11, "llllllllll")
    assert @cache.exist?(11)
    assert @cache.exist?(10)
    assert @cache.exist?(9)
    assert @cache.exist?(8)
    assert @cache.exist?(7)
    assert !@cache.exist?(6), "no entry"
    assert !@cache.exist?(5), "no entry"
    assert @cache.exist?(4)
    assert !@cache.exist?(3), "no entry"
    assert @cache.exist?(2)
    assert !@cache.exist?(1), "no entry"
  end

  def test_prune_size_on_write_based_on_key_length
    @cache.write(1, "aaaaaaaaaa") && sleep(0.001)
    @cache.write(2, "bbbbbbbbbb") && sleep(0.001)
    @cache.write(3, "cccccccccc") && sleep(0.001)
    @cache.write(4, "dddddddddd") && sleep(0.001)
    @cache.write(5, "eeeeeeeeee") && sleep(0.001)
    @cache.write(6, "ffffffffff") && sleep(0.001)
    @cache.write(7, "gggggggggg") && sleep(0.001)
    @cache.write(8, "hhhhhhhhhh") && sleep(0.001)
    @cache.write(9, "iiiiiiiiii") && sleep(0.001)
    long_key = '*' * 2 * @record_size
    @cache.write(long_key, "llllllllll")
    assert @cache.exist?(long_key)
    assert @cache.exist?(9)
    assert @cache.exist?(8)
    assert @cache.exist?(7)
    assert @cache.exist?(6)
    assert !@cache.exist?(5), "no entry"
    assert !@cache.exist?(4), "no entry"
    assert !@cache.exist?(3), "no entry"
    assert !@cache.exist?(2), "no entry"
    assert !@cache.exist?(1), "no entry"
  end

  def test_pruning_is_capped_at_a_max_time
    def @cache.delete_entry (*args)
      sleep(0.01)
      super
    end
    @cache.write(1, "aaaaaaaaaa") && sleep(0.001)
    @cache.write(2, "bbbbbbbbbb") && sleep(0.001)
    @cache.write(3, "cccccccccc") && sleep(0.001)
    @cache.write(4, "dddddddddd") && sleep(0.001)
    @cache.write(5, "eeeeeeeeee") && sleep(0.001)
    @cache.prune(30, 0.001)
    assert @cache.exist?(5)
    assert @cache.exist?(4)
    assert @cache.exist?(3)
    assert @cache.exist?(2)
    assert !@cache.exist?(1)
  end

  def test_write_with_unless_exist
    assert_equal true, @cache.write(1, "aaaaaaaaaa")
    assert_equal false, @cache.write(1, "aaaaaaaaaa", :unless_exist => true)
    @cache.write(1, nil)
    assert_equal false, @cache.write(1, "aaaaaaaaaa", :unless_exist => true)
  end
end

class MemCacheStoreTest < ActiveSupport::TestCase
  require 'dalli'

  begin
    ss = Dalli::Client.new('localhost:11211').stats
    raise Dalli::DalliError unless ss['localhost:11211']

    MEMCACHE_UP = true
  rescue Dalli::DalliError
    $stderr.puts "Skipping memcached tests. Start memcached and try again."
    MEMCACHE_UP = false
  end

  def setup
    skip "memcache server is not up" unless MEMCACHE_UP

    @cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, :expires_in => 60)
    @peek = ActiveSupport::Cache.lookup_store(:mem_cache_store)
    @data = @cache.instance_variable_get(:@data)
    @cache.clear
    @cache.silence!
    @cache.logger = ActiveSupport::Logger.new("/dev/null")
  end

  include CacheStoreBehavior
  include LocalCacheBehavior
  include CacheIncrementDecrementBehavior
  include EncodedKeyCacheBehavior
  include AutoloadingCacheBehavior

  def test_raw_values
    cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, :raw => true)
    cache.clear
    cache.write("foo", 2)
    assert_equal "2", cache.read("foo")
  end

  def test_raw_values_with_marshal
    cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, :raw => true)
    cache.clear
    cache.write("foo", Marshal.dump([]))
    assert_equal [], cache.read("foo")
  end

  def test_local_cache_raw_values
    cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, :raw => true)
    cache.clear
    cache.with_local_cache do
      cache.write("foo", 2)
      assert_equal "2", cache.read("foo")
    end
  end

  def test_local_cache_raw_values_with_marshal
    cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, :raw => true)
    cache.clear
    cache.with_local_cache do
      cache.write("foo", Marshal.dump([]))
      assert_equal [], cache.read("foo")
    end
  end

  def test_read_should_return_a_different_object_id_each_time_it_is_called
    @cache.write('foo', 'bar')
    value = @cache.read('foo')
    assert_not_equal value.object_id, @cache.read('foo').object_id
    value << 'bingo'
    assert_not_equal value, @cache.read('foo')
  end
end

class NullStoreTest < ActiveSupport::TestCase
  def setup
    @cache = ActiveSupport::Cache.lookup_store(:null_store)
  end

  def test_clear
    @cache.clear
  end

  def test_cleanup
    @cache.cleanup
  end

  def test_write
    assert_equal true, @cache.write("name", "value")
  end

  def test_read
    @cache.write("name", "value")
    assert_nil @cache.read("name")
  end

  def test_delete
    @cache.write("name", "value")
    assert_equal false, @cache.delete("name")
  end

  def test_increment
    @cache.write("name", 1, :raw => true)
    assert_nil @cache.increment("name")
  end

  def test_decrement
    @cache.write("name", 1, :raw => true)
    assert_nil @cache.increment("name")
  end

  def test_delete_matched
    @cache.write("name", "value")
    @cache.delete_matched(/name/)
  end

  def test_local_store_strategy
    @cache.with_local_cache do
      @cache.write("name", "value")
      assert_equal "value", @cache.read("name")
      @cache.delete("name")
      assert_nil @cache.read("name")
      @cache.write("name", "value")
    end
    assert_nil @cache.read("name")
  end

  def test_setting_nil_cache_store
    assert ActiveSupport::Cache.lookup_store.class.name, ActiveSupport::Cache::NullStore.name
  end
end

class CacheStoreLoggerTest < ActiveSupport::TestCase
  def setup
    @cache = ActiveSupport::Cache.lookup_store(:memory_store)

    @buffer = StringIO.new
    @cache.logger = ActiveSupport::Logger.new(@buffer)
  end

  def test_logging
    @cache.fetch('foo') { 'bar' }
    assert @buffer.string.present?
  end

  def test_mute_logging
    @cache.mute { @cache.fetch('foo') { 'bar' } }
    assert @buffer.string.blank?
  end

  def test_multi_read_loggin
    @cache.write 'hello', 'goodbye'
    @cache.write 'world', 'earth'

    @cache.read_multi('hello', 'world')

    assert_match "Caches multi read:\n- hello\n- world", @buffer.string
  end
end

class CacheEntryTest < ActiveSupport::TestCase
  def test_expired
    entry = ActiveSupport::Cache::Entry.new("value")
    assert !entry.expired?, 'entry not expired'
    entry = ActiveSupport::Cache::Entry.new("value", :expires_in => 60)
    assert !entry.expired?, 'entry not expired'
    Time.stub(:now, Time.now + 61) do
      assert entry.expired?, 'entry is expired'
    end
  end

  def test_compress_values
    value = "value" * 100
    entry = ActiveSupport::Cache::Entry.new(value, :compress => true, :compress_threshold => 1)
    assert_equal value, entry.value
    assert(value.bytesize > entry.size, "value is compressed")
  end

  def test_non_compress_values
    value = "value" * 100
    entry = ActiveSupport::Cache::Entry.new(value)
    assert_equal value, entry.value
    assert_equal value.bytesize, entry.size
  end
end