aboutsummaryrefslogtreecommitdiffstats
path: root/activerecord/test/cases/identity_map_test.rb
blob: d98638ab7306d82cbc68cfe5db283dafbacdd443 (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
require "cases/helper"
require 'models/developer'
require 'models/project'
require 'models/company'
require 'models/topic'
require 'models/reply'
require 'models/computer'
require 'models/customer'
require 'models/order'
require 'models/post'
require 'models/author'
require 'models/tag'
require 'models/tagging'
require 'models/comment'
require 'models/sponsor'
require 'models/member'
require 'models/essay'
require 'models/subscriber'
require "models/pirate"
require "models/bird"
require "models/parrot"

if ActiveRecord::IdentityMap.enabled?
class IdentityMapTest < ActiveRecord::TestCase
  fixtures :accounts, :companies, :developers, :projects, :topics,
    :developers_projects, :computers, :authors, :author_addresses,
    :posts, :tags, :taggings, :comments, :subscribers

  ##############################################################################
  # Basic tests checking if IM is functioning properly on basic find operations#
  ##############################################################################

  def test_find_id
    assert_same(Client.find(3), Client.find(3))
  end

  def test_find_id_without_identity_map
    ActiveRecord::IdentityMap.without do
      assert_not_same(Client.find(3), Client.find(3))
    end
  end

  def test_find_id_use_identity_map
    ActiveRecord::IdentityMap.enabled = false
    ActiveRecord::IdentityMap.use do
      assert_same(Client.find(3), Client.find(3))
    end
    ActiveRecord::IdentityMap.enabled = true
  end

  def test_find_pkey
    assert_same(
      Subscriber.find('swistak'),
      Subscriber.find('swistak')
    )
  end

  def test_find_by_id
    assert_same(
      Client.find_by_id(3),
      Client.find_by_id(3)
    )
  end

  def test_find_by_string_and_numeric_id
    assert_same(
      Client.find_by_id("3"),
      Client.find_by_id(3)
    )
  end

  def test_find_by_pkey
    assert_same(
      Subscriber.find_by_nick('swistak'),
      Subscriber.find_by_nick('swistak')
    )
  end

  def test_find_first_id
    assert_same(
      Client.find(:first, :conditions => {:id => 1}),
      Client.find(:first, :conditions => {:id => 1})
    )
  end

  def test_find_first_pkey
    assert_same(
      Subscriber.find(:first, :conditions => {:nick => 'swistak'}),
      Subscriber.find(:first, :conditions => {:nick => 'swistak'})
    )
  end

  ##############################################################################
  # Tests checking if IM is functioning properly on more advanced finds        #
  # and associations                                                           #
  ##############################################################################

  def test_owner_object_is_associated_from_identity_map
    post = Post.find(1)
    comment = post.comments.first

    assert_no_queries do
      comment.post
    end
    assert_same post, comment.post
  end

  def test_associated_object_are_assigned_from_identity_map
    post = Post.find(1)

    post.comments.each do |comment|
      assert_same post, comment.post
      assert_equal post.object_id, comment.post.object_id
    end
  end

  def test_creation
    t1 = Topic.create("title" => "t1")
    t2 = Topic.find(t1.id)
    assert_same(t1, t2)
  end

  ##############################################################################
  # Tests checking dirty attribute behaviour with IM                           #
  ##############################################################################

  def test_loading_new_instance_should_not_update_dirty_attributes
    swistak = Subscriber.find(:first, :conditions => {:nick => 'swistak'})
    swistak.name = "Swistak Sreberkowiec"
    assert_equal(["name"], swistak.changed)
    assert_equal({"name" => ["Marcin Raczkowski", "Swistak Sreberkowiec"]}, swistak.changes)

    s = Subscriber.find('swistak')

    assert swistak.name_changed?
    assert_equal("Swistak Sreberkowiec", swistak.name)
  end

  def test_loading_new_instance_should_change_dirty_attribute_original_value
    swistak = Subscriber.find(:first, :conditions => {:nick => 'swistak'})
    swistak.name = "Swistak Sreberkowiec"

    Subscriber.update_all({:name => "Raczkowski Marcin"}, {:name => "Marcin Raczkowski"})

    s = Subscriber.find('swistak')

    assert_equal({'name' => ["Raczkowski Marcin", "Swistak Sreberkowiec"]}, swistak.changes)
    assert_equal("Swistak Sreberkowiec", swistak.name)
  end

  def test_loading_new_instance_should_remove_dirt
    swistak = Subscriber.find(:first, :conditions => {:nick => 'swistak'})
    swistak.name = "Swistak Sreberkowiec"

    assert_equal({"name" => ["Marcin Raczkowski", "Swistak Sreberkowiec"]}, swistak.changes)

    Subscriber.update_all({:name => "Swistak Sreberkowiec"}, {:name => "Marcin Raczkowski"})

    s = Subscriber.find('swistak')

    assert_equal("Swistak Sreberkowiec", swistak.name)
    assert_equal({}, swistak.changes)
    assert !swistak.name_changed?
  end

  def test_has_many_associations
    pirate = Pirate.create!(:catchphrase => "Don' botharrr talkin' like one, savvy?")
    pirate.birds.create!(:name => 'Posideons Killer')
    pirate.birds.create!(:name => 'Killer bandita Dionne')

    posideons, killer = pirate.birds

    pirate.reload

    pirate.birds_attributes = [{ :id => posideons.id, :name => 'Grace OMalley' }]
    assert_equal 'Grace OMalley', pirate.birds.to_a.find { |r| r.id == posideons.id }.name
  end

  def test_changing_associations
    post1 = Post.create("title" => "One post", "body" => "Posting...")
    post2 = Post.create("title" => "Another post", "body" => "Posting... Again...")
    comment = Comment.new("body" => "comment")

    comment.post = post1
    assert comment.save

    assert_same(post1.comments.first, comment)

    comment.post = post2
    assert comment.save

    assert_same(post2.comments.first, comment)
    assert_equal(0, post1.comments.size)
  end

  def test_im_with_polymorphic_has_many_going_through_join_model_with_custom_select_and_joins
    tag = posts(:welcome).tags.first
    tag_with_joins_and_select = posts(:welcome).tags.add_joins_and_select.first
    assert_same(tag, tag_with_joins_and_select)
    assert_nothing_raised(NoMethodError, "Joins/select was not loaded") { tag.author_id }
  end

  ##############################################################################
  # Tests checking Identity Map behaviour with preloaded associations, joins,  #
  # includes etc.                                                              #
  ##############################################################################

  def test_find_with_preloaded_associations
    assert_queries(2) do
      posts = Post.preload(:comments)
      assert posts.first.comments.first
    end

    # With IM we'll retrieve post object from previous query, it'll have comments
    # already preloaded from first call
    assert_queries(1) do
      posts = Post.preload(:comments).to_a
      assert posts.first.comments.first
    end

    assert_queries(2) do
      posts = Post.preload(:author)
      assert posts.first.author
    end

    # With IM we'll retrieve post object from previous query, it'll have comments
    # already preloaded from first call
    assert_queries(1) do
      posts = Post.preload(:author).to_a
      assert posts.first.author
    end

    assert_queries(1) do
      posts = Post.preload(:author, :comments).to_a
      assert posts.first.author
      assert posts.first.comments.first
    end
  end

  def test_find_with_included_associations
    assert_queries(2) do
      posts = Post.includes(:comments)
      assert posts.first.comments.first
    end

    assert_queries(1) do
      posts = Post.scoped.includes(:comments)
      assert posts.first.comments.first
    end

    assert_queries(2) do
      posts = Post.includes(:author)
      assert posts.first.author
    end

    assert_queries(1) do
      posts = Post.includes(:author, :comments).to_a
      assert posts.first.author
      assert posts.first.comments.first
    end
  end

  def test_eager_loading_with_conditions_on_joined_table_preloads
    posts = Post.find(:all, :select => 'distinct posts.*', :include => :author, :joins => [:comments], :conditions => "comments.body like 'Thank you%'", :order => 'posts.id')
    assert_equal [posts(:welcome)], posts
    assert_equal authors(:david), assert_no_queries { posts[0].author}
    assert_same posts.first.author, Author.first

    posts = Post.find(:all, :select => 'distinct posts.*', :include => :author, :joins => [:comments], :conditions => "comments.body like 'Thank you%'", :order => 'posts.id')
    assert_equal [posts(:welcome)], posts
    assert_equal authors(:david), assert_no_queries { posts[0].author}
    assert_same posts.first.author, Author.first

    posts = Post.find(:all, :include => :author, :joins => {:taggings => :tag}, :conditions => "tags.name = 'General'", :order => 'posts.id')
    assert_equal posts(:welcome, :thinking), posts
    assert_same posts.first.author, Author.first

    posts = Post.find(:all, :include => :author, :joins => {:taggings => {:tag => :taggings}}, :conditions => "taggings_tags.super_tag_id=2", :order => 'posts.id')
    assert_equal posts(:welcome, :thinking), posts
    assert_same posts.first.author, Author.first
  end

  def test_eager_loading_with_conditions_on_string_joined_table_preloads
    posts = assert_queries(2) do
      Post.find(:all, :select => 'distinct posts.*', :include => :author, :joins => "INNER JOIN comments on comments.post_id = posts.id", :conditions => "comments.body like 'Thank you%'", :order => 'posts.id')
    end
    assert_equal [posts(:welcome)], posts
    assert_equal authors(:david), assert_no_queries { posts[0].author}

    posts = assert_queries(1) do
      Post.find(:all, :select => 'distinct posts.*', :include => :author, :joins => ["INNER JOIN comments on comments.post_id = posts.id"], :conditions => "comments.body like 'Thank you%'", :order => 'posts.id')
    end
    assert_equal [posts(:welcome)], posts
    assert_equal authors(:david), assert_no_queries { posts[0].author}
  end

  ##############################################################################
  # Behaviour releated to saving failures
  ##############################################################################

  def test_reload_object_if_save_failed
    developer = Developer.first
    developer.salary = 0

    assert !developer.save

    same_developer = Developer.first

    assert_not_same  developer, same_developer
    assert_not_equal 0, same_developer.salary
    assert_not_equal developer.salary, same_developer.salary
  end

  def test_reload_object_if_forced_save_failed
    developer = Developer.first
    developer.salary = 0

    assert_raise(ActiveRecord::RecordInvalid) { developer.save! }

    same_developer = Developer.first

    assert_not_same  developer, same_developer
    assert_not_equal 0, same_developer.salary
    assert_not_equal developer.salary, same_developer.salary
  end

  def test_reload_object_if_update_attributes_fails
    developer = Developer.first
    developer.salary = 0

    assert !developer.update_attributes(:salary => 0)

    same_developer = Developer.first

    assert_not_same  developer, same_developer
    assert_not_equal 0, same_developer.salary
    assert_not_equal developer.salary, same_developer.salary
  end

  ##############################################################################
  # Behaviour of readonly, forzen, destroyed
  ##############################################################################

  def test_find_using_identity_map_respects_readonly_when_loading_associated_object_first
    author  = Author.first
    readonly_comment = author.readonly_comments.first

    comment = Comment.first
    assert !comment.readonly?

    assert readonly_comment.readonly?

    assert_raise(ActiveRecord::ReadOnlyRecord) {readonly_comment.save}
    assert comment.save
  end

  def test_find_using_identity_map_respects_readonly
    comment = Comment.first
    assert !comment.readonly?

    author  = Author.first
    readonly_comment = author.readonly_comments.first

    assert readonly_comment.readonly?

    assert_raise(ActiveRecord::ReadOnlyRecord) {readonly_comment.save}
    assert comment.save
  end

  def test_find_using_select_and_identity_map
    author_id, author = Author.select('id').first, Author.first

    assert_equal author_id, author
    assert_same author_id, author
    assert_not_nil author.name

    post, post_id = Post.first, Post.select('id').first

    assert_equal post_id, post
    assert_same post_id, post
    assert_not_nil post.title
  end

# Currently AR is not allowing changing primary key (see Persistence#update)
# So we ignore it. If this changes, this test needs to be uncommented.
#  def test_updating_of_pkey
#    assert client = Client.find(3),
#    client.update_attribute(:id, 666)
#
#    assert Client.find(666)
#    assert_same(client, Client.find(666))
#
#    s = Subscriber.find_by_nick('swistak')
#    assert s.update_attribute(:nick, 'swistakTheJester')
#    assert_equal('swistakTheJester', s.nick)
#
#    assert stj = Subscriber.find_by_nick('swistakTheJester')
#    assert_same(s, stj)
#  end

end
end