aboutsummaryrefslogtreecommitdiffstats
path: root/activesupport/test/caching_test.rb
blob: b79a7bbaec32f4f32762717d65961dd587e09408 (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
require 'logger'
require 'abstract_unit'
require 'active_support/cache'

class CacheKeyTest < ActiveSupport::TestCase
  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
    begin
      ENV['RAILS_CACHE_ID'] = 'c99'
      assert_equal 'c99/foo', ActiveSupport::Cache.expand_cache_key(:foo)
      assert_equal 'c99/foo', ActiveSupport::Cache.expand_cache_key([:foo])
      assert_equal 'c99/c99/foo/c99/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/c99/foo/c99/bar', ActiveSupport::Cache.expand_cache_key([:foo, :bar], :nm)
    ensure
      ENV['RAILS_CACHE_ID'] = nil
    end
  end

  def test_expand_cache_key_with_rails_app_version
    begin
      ENV['RAILS_APP_VERSION'] = 'rails3'
      assert_equal 'rails3/foo', ActiveSupport::Cache.expand_cache_key(:foo)
    ensure
      ENV['RAILS_APP_VERSION'] = nil
    end
  end

  def test_expand_cache_key_rails_cache_id_should_win_over_rails_app_version
    begin
      ENV['RAILS_CACHE_ID'] = 'c99'
      ENV['RAILS_APP_VERSION'] = 'rails3'
      assert_equal 'c99/foo', ActiveSupport::Cache.expand_cache_key(:foo)
    ensure
      ENV['RAILS_CACHE_ID'] = nil
      ENV['RAILS_APP_VERSION'] = nil
    end
  end

  def test_respond_to_cache_key
    key = 'foo'
    def key.cache_key
      :foo_key
    end
    assert_equal 'foo_key', ActiveSupport::Cache.expand_cache_key(key)
  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
    MemCache.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 = MemCache.new
    MemCache.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_given_mem_cache_like_object
    MemCache.expects(:new).never
    memcache = Object.new
    def memcache.get() true end
    store = ActiveSupport::Cache.lookup_store :mem_cache_store, memcache
    assert_kind_of(ActiveSupport::Cache::MemCacheStore, store)
  end

  def test_mem_cache_fragment_cache_store_with_multiple_servers
    MemCache.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
    MemCache.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_equal false, cache.exist?("foo")
    assert_equal true, 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_equal false, cache.exist?("foo")
    assert_equal true, 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_equal true, @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_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_equal true, @cache.write('foo', {:a => "b"})
    assert_equal({:a => "b"}, @cache.read('foo'))
  end

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

  def test_should_read_and_write_nil
    assert_equal true, @cache.write('foo', nil)
    assert_equal nil, @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_and_write_compressed_small_data
    @cache.write('foo', 'bar', :compress => true)
    raw_value = @cache.send(:read_entry, 'foo', {}).raw_value
    assert_equal 'bar', @cache.read('foo')
    assert_equal 'bar', raw_value
  end

  def test_read_and_write_compressed_large_data
    @cache.write('foo', 'bar', :compress => true, :compress_threshold => 2)
    raw_value = @cache.send(:read_entry, 'foo', {}).raw_value
    assert_equal 'bar', @cache.read('foo')
    assert_equal 'bar', Marshal.load(Zlib::Inflate.inflate(raw_value))
  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_equal true, @cache.exist?('foo')
  end

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

  def test_store_objects_should_be_immutable
    @cache.write('foo', 'bar')
    assert_raise(ActiveSupport::FrozenObjectError) { @cache.read('foo').gsub!(/.*/, 'baz') }
    assert_equal 'bar', @cache.read('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.stubs(:now).returns(time)

    @cache.write('foo', 'bar')
    assert_equal 'bar', @cache.read('foo')

    Time.stubs(:now).returns(time + 30)
    assert_equal 'bar', @cache.read('foo')

    Time.stubs(:now).returns(time + 61)
    assert_nil @cache.read('foo')
  end

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

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

  def test_race_condition_protection_is_safe
    time = Time.now
    @cache.write('foo', 'bar', :expires_in => 60)
    Time.stubs(:now).returns(time + 61)
    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')
    Time.stubs(:now).returns(time + 71)
    assert_nil @cache.read('foo')
  end

  def test_crazy_key_characters
    crazy_key = "#/:*(<+=> )&$%@?;'\"\'`~-"
    assert_equal true, @cache.write(crazy_key, "1", :raw => true)
    assert_equal "1", @cache.read(crazy_key)
    assert_equal "1", @cache.fetch(crazy_key)
    assert_equal true, @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 = ""
    1000.times{key << "x"}
    assert_equal true, @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_equal true, @cache.delete(key)
  end
end

module CacheDeleteMatchedBehavior
  def test_delete_matched
    @cache.write("foo", "bar")
    @cache.write("fu", "baz")
    @cache.delete_matched(/oo/)
    assert_equal false, @cache.exist?("foo")
    assert_equal true, @cache.exist?("fu")
  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
  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
  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_equal true, 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
    }
    app = @cache.middleware.new(app)
    app.call({})
  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)
  end

  def teardown
    FileUtils.rm_r(cache_dir)
  end

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

  include CacheStoreBehavior
  include LocalCacheBehavior
  include CacheDeleteMatchedBehavior
  include CacheIncrementDecrementBehavior

  def test_deprecated_expires_in_on_read
    ActiveSupport::Deprecation.silence do
      old_cache = ActiveSupport::Cache.lookup_store(:file_store, cache_dir)

      time = Time.local(2008, 4, 24)
      Time.stubs(:now).returns(time)

      old_cache.write("foo", "bar")
      assert_equal 'bar', old_cache.read('foo', :expires_in => 60)

      Time.stubs(:now).returns(time + 30)
      assert_equal 'bar', old_cache.read('foo', :expires_in => 60)

      Time.stubs(:now).returns(time + 61)
      assert_equal 'bar', old_cache.read('foo')
      assert_nil old_cache.read('foo', :expires_in => 60)
      assert_nil old_cache.read('foo')
    end
  end
end

class MemoryStoreTest < ActiveSupport::TestCase
  def setup
    @cache = ActiveSupport::Cache.lookup_store(:memory_store, :expires_in => 60, :size => 100)
  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(30)
    assert_equal true, @cache.exist?(5)
    assert_equal true, @cache.exist?(4)
    assert_equal false, @cache.exist?(3)
    assert_equal true, @cache.exist?(2)
    assert_equal false, @cache.exist?(1)
  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_equal true, @cache.exist?(11)
    assert_equal true, @cache.exist?(10)
    assert_equal true, @cache.exist?(9)
    assert_equal true, @cache.exist?(8)
    assert_equal true, @cache.exist?(7)
    assert_equal false, @cache.exist?(6)
    assert_equal false, @cache.exist?(5)
    assert_equal true, @cache.exist?(4)
    assert_equal false, @cache.exist?(3)
    assert_equal true, @cache.exist?(2)
    assert_equal false, @cache.exist?(1)
  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_equal true, @cache.exist?(5)
    assert_equal true, @cache.exist?(4)
    assert_equal true, @cache.exist?(3)
    assert_equal true, @cache.exist?(2)
    assert_equal false, @cache.exist?(1)
  end
end

class SynchronizedStoreTest < ActiveSupport::TestCase
  def setup
    ActiveSupport::Deprecation.silence do
      @cache = ActiveSupport::Cache.lookup_store(:memory_store, :expires_in => 60)
    end
  end

  include CacheStoreBehavior
  include CacheDeleteMatchedBehavior
  include CacheIncrementDecrementBehavior
end

uses_memcached 'memcached backed store' do
  class MemCacheStoreTest < ActiveSupport::TestCase
    def setup
      @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 = Logger.new("/dev/null")
    end

    include CacheStoreBehavior
    include LocalCacheBehavior
    include CacheIncrementDecrementBehavior

    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_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
  end

  class CompressedMemCacheStore < ActiveSupport::TestCase
    def setup
      ActiveSupport::Deprecation.silence do
        @cache = ActiveSupport::Cache.lookup_store(:compressed_mem_cache_store, :expires_in => 60)
        @cache.clear
      end
    end

    include CacheStoreBehavior
    include CacheIncrementDecrementBehavior
  end
end

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

    @buffer = StringIO.new
    @cache.logger = 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
end

class CacheEntryTest < ActiveSupport::TestCase
  def test_create_raw_entry
    time = Time.now
    entry = ActiveSupport::Cache::Entry.create("raw", time, :compress => false, :expires_in => 300)
    assert_equal "raw", entry.raw_value
    assert_equal time.to_f, entry.created_at
    assert_equal false, entry.compressed?
    assert_equal 300, entry.expires_in
  end

  def test_expired
    entry = ActiveSupport::Cache::Entry.new("value")
    assert_equal false, entry.expired?
    entry = ActiveSupport::Cache::Entry.new("value", :expires_in => 60)
    assert_equal false, entry.expired?
    time = Time.now + 61
    Time.stubs(:now).returns(time)
    assert_equal true, entry.expired?
  end

  def test_compress_values
    entry = ActiveSupport::Cache::Entry.new("value", :compress => true, :compress_threshold => 1)
    assert_equal "value", entry.value
    assert_equal true, entry.compressed?
    assert_equal "value", Marshal.load(Zlib::Inflate.inflate(entry.raw_value))
  end

  def test_non_compress_values
    entry = ActiveSupport::Cache::Entry.new("value")
    assert_equal "value", entry.value
    assert_equal "value", entry.raw_value
    assert_equal false, entry.compressed?
  end
end