1. Allan Davis
  2. RubyLearning

Source

RubyLearning / ProjectTrak / vendor / rails / activerecord / test / cases / associations / belongs_to_associations_test.rb

  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
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'

class BelongsToAssociationsTest < ActiveRecord::TestCase
  fixtures :accounts, :companies, :developers, :projects, :topics,
           :developers_projects, :computers, :authors, :posts, :tags, :taggings, :comments

  def test_belongs_to
    Client.find(3).firm.name
    assert_equal companies(:first_firm).name, Client.find(3).firm.name
    assert !Client.find(3).firm.nil?, "Microsoft should have a firm"
  end

  def test_proxy_assignment
    account = Account.find(1)
    assert_nothing_raised { account.firm = account.firm }
  end

  def test_triple_equality
    assert Client.find(3).firm === Firm
    assert Firm === Client.find(3).firm
  end

  def test_type_mismatch
    assert_raise(ActiveRecord::AssociationTypeMismatch) { Account.find(1).firm = 1 }
    assert_raise(ActiveRecord::AssociationTypeMismatch) { Account.find(1).firm = Project.find(1) }
  end

  def test_natural_assignment
    apple = Firm.create("name" => "Apple")
    citibank = Account.create("credit_limit" => 10)
    citibank.firm = apple
    assert_equal apple.id, citibank.firm_id
  end

  def test_no_unexpected_aliasing
    first_firm = companies(:first_firm)
    another_firm = companies(:another_firm)

    citibank = Account.create("credit_limit" => 10)
    citibank.firm = first_firm
    original_proxy = citibank.firm
    citibank.firm = another_firm

    assert_equal first_firm.object_id, original_proxy.target.object_id
    assert_equal another_firm.object_id, citibank.firm.target.object_id
  end

  def test_creating_the_belonging_object
    citibank = Account.create("credit_limit" => 10)
    apple    = citibank.create_firm("name" => "Apple")
    assert_equal apple, citibank.firm
    citibank.save
    citibank.reload
    assert_equal apple, citibank.firm
  end

  def test_building_the_belonging_object
    citibank = Account.create("credit_limit" => 10)
    apple    = citibank.build_firm("name" => "Apple")
    citibank.save
    assert_equal apple.id, citibank.firm_id
  end

  def test_natural_assignment_to_nil
    client = Client.find(3)
    client.firm = nil
    client.save
    assert_nil client.firm(true)
    assert_nil client.client_of
  end

  def test_with_different_class_name
    assert_equal Company.find(1).name, Company.find(3).firm_with_other_name.name
    assert_not_nil Company.find(3).firm_with_other_name, "Microsoft should have a firm"
  end

  def test_with_condition
    assert_equal Company.find(1).name, Company.find(3).firm_with_condition.name
    assert_not_nil Company.find(3).firm_with_condition, "Microsoft should have a firm"
  end

  def test_with_select
    assert_equal Company.find(2).firm_with_select.attributes.size, 1
    assert_equal Company.find(2, :include => :firm_with_select ).firm_with_select.attributes.size, 1
  end

  def test_belongs_to_counter
    debate = Topic.create("title" => "debate")
    assert_equal 0, debate.send(:read_attribute, "replies_count"), "No replies yet"

    trash = debate.replies.create("title" => "blah!", "content" => "world around!")
    assert_equal 1, Topic.find(debate.id).send(:read_attribute, "replies_count"), "First reply created"

    trash.destroy
    assert_equal 0, Topic.find(debate.id).send(:read_attribute, "replies_count"), "First reply deleted"
  end

  def test_belongs_to_counter_with_assigning_nil
    p = Post.find(1)
    c = Comment.find(1)

    assert_equal p.id, c.post_id
    assert_equal 2, Post.find(p.id).comments.size

    c.post = nil

    assert_equal 1, Post.find(p.id).comments.size
  end

  def test_belongs_to_counter_with_reassigning
    t1 = Topic.create("title" => "t1")
    t2 = Topic.create("title" => "t2")
    r1 = Reply.new("title" => "r1", "content" => "r1")
    r1.topic = t1

    assert r1.save
    assert_equal 1, Topic.find(t1.id).replies.size
    assert_equal 0, Topic.find(t2.id).replies.size

    r1.topic = Topic.find(t2.id)

    assert r1.save
    assert_equal 0, Topic.find(t1.id).replies.size
    assert_equal 1, Topic.find(t2.id).replies.size

    r1.topic = nil

    assert_equal 0, Topic.find(t1.id).replies.size
    assert_equal 0, Topic.find(t2.id).replies.size

    r1.topic = t1

    assert_equal 1, Topic.find(t1.id).replies.size
    assert_equal 0, Topic.find(t2.id).replies.size

    r1.destroy

    assert_equal 0, Topic.find(t1.id).replies.size
    assert_equal 0, Topic.find(t2.id).replies.size
  end

  def test_belongs_to_counter_after_save
    topic = Topic.create!(:title => "monday night")
    topic.replies.create!(:title => "re: monday night", :content => "football")
    assert_equal 1, Topic.find(topic.id)[:replies_count]

    topic.save!
    assert_equal 1, Topic.find(topic.id)[:replies_count]
  end

  def test_belongs_to_counter_after_update_attributes
    topic = Topic.create!(:title => "37s")
    topic.replies.create!(:title => "re: 37s", :content => "rails")
    assert_equal 1, Topic.find(topic.id)[:replies_count]

    topic.update_attributes(:title => "37signals")
    assert_equal 1, Topic.find(topic.id)[:replies_count]
  end

  def test_belongs_to_counter_after_save
    topic = Topic.create("title" => "monday night")
    topic.replies.create("title" => "re: monday night", "content" => "football")
    assert_equal 1, Topic.find(topic.id).send(:read_attribute, "replies_count")

    topic.save
    assert_equal 1, Topic.find(topic.id).send(:read_attribute, "replies_count")
  end

  def test_belongs_to_counter_after_update_attributes
    topic = Topic.create("title" => "37s")
    topic.replies.create("title" => "re: 37s", "content" => "rails")
    assert_equal 1, Topic.find(topic.id).send(:read_attribute, "replies_count")

    topic.update_attributes("title" => "37signals")
    assert_equal 1, Topic.find(topic.id).send(:read_attribute, "replies_count")
  end

  def test_assignment_before_parent_saved
    client = Client.find(:first)
    apple = Firm.new("name" => "Apple")
    client.firm = apple
    assert_equal apple, client.firm
    assert apple.new_record?
    assert client.save
    assert apple.save
    assert !apple.new_record?
    assert_equal apple, client.firm
    assert_equal apple, client.firm(true)
  end

  def test_assignment_before_child_saved
    final_cut = Client.new("name" => "Final Cut")
    firm = Firm.find(1)
    final_cut.firm = firm
    assert final_cut.new_record?
    assert final_cut.save
    assert !final_cut.new_record?
    assert !firm.new_record?
    assert_equal firm, final_cut.firm
    assert_equal firm, final_cut.firm(true)
  end

  def test_assignment_before_either_saved
    final_cut = Client.new("name" => "Final Cut")
    apple = Firm.new("name" => "Apple")
    final_cut.firm = apple
    assert final_cut.new_record?
    assert apple.new_record?
    assert final_cut.save
    assert !final_cut.new_record?
    assert !apple.new_record?
    assert_equal apple, final_cut.firm
    assert_equal apple, final_cut.firm(true)
  end

  def test_new_record_with_foreign_key_but_no_object
    c = Client.new("firm_id" => 1)
    assert_equal Firm.find(:first), c.firm_with_basic_id
  end

  def test_forgetting_the_load_when_foreign_key_enters_late
    c = Client.new
    assert_nil c.firm_with_basic_id

    c.firm_id = 1
    assert_equal Firm.find(:first), c.firm_with_basic_id
  end

  def test_field_name_same_as_foreign_key
    computer = Computer.find(1)
    assert_not_nil computer.developer, ":foreign key == attribute didn't lock up" # '
  end

  def test_counter_cache
    topic = Topic.create :title => "Zoom-zoom-zoom"
    assert_equal 0, topic[:replies_count]

    reply = Reply.create(:title => "re: zoom", :content => "speedy quick!")
    reply.topic = topic

    assert_equal 1, topic.reload[:replies_count]
    assert_equal 1, topic.replies.size

    topic[:replies_count] = 15
    assert_equal 15, topic.replies.size
  end

  def test_custom_counter_cache
    reply = Reply.create(:title => "re: zoom", :content => "speedy quick!")
    assert_equal 0, reply[:replies_count]

    silly = SillyReply.create(:title => "gaga", :content => "boo-boo")
    silly.reply = reply

    assert_equal 1, reply.reload[:replies_count]
    assert_equal 1, reply.replies.size

    reply[:replies_count] = 17
    assert_equal 17, reply.replies.size
  end

  def test_store_two_association_with_one_save
    num_orders = Order.count
    num_customers = Customer.count
    order = Order.new

    customer1 = order.billing = Customer.new
    customer2 = order.shipping = Customer.new
    assert order.save
    assert_equal customer1, order.billing
    assert_equal customer2, order.shipping

    order.reload

    assert_equal customer1, order.billing
    assert_equal customer2, order.shipping

    assert_equal num_orders +1, Order.count
    assert_equal num_customers +2, Customer.count
  end


  def test_store_association_in_two_relations_with_one_save
    num_orders = Order.count
    num_customers = Customer.count
    order = Order.new

    customer = order.billing = order.shipping = Customer.new
    assert order.save
    assert_equal customer, order.billing
    assert_equal customer, order.shipping

    order.reload

    assert_equal customer, order.billing
    assert_equal customer, order.shipping

    assert_equal num_orders +1, Order.count
    assert_equal num_customers +1, Customer.count
  end

  def test_store_association_in_two_relations_with_one_save_in_existing_object
    num_orders = Order.count
    num_customers = Customer.count
    order = Order.create

    customer = order.billing = order.shipping = Customer.new
    assert order.save
    assert_equal customer, order.billing
    assert_equal customer, order.shipping

    order.reload

    assert_equal customer, order.billing
    assert_equal customer, order.shipping

    assert_equal num_orders +1, Order.count
    assert_equal num_customers +1, Customer.count
  end

  def test_store_association_in_two_relations_with_one_save_in_existing_object_with_values
    num_orders = Order.count
    num_customers = Customer.count
    order = Order.create

    customer = order.billing = order.shipping = Customer.new
    assert order.save
    assert_equal customer, order.billing
    assert_equal customer, order.shipping

    order.reload

    customer = order.billing = order.shipping = Customer.new

    assert order.save
    order.reload

    assert_equal customer, order.billing
    assert_equal customer, order.shipping

    assert_equal num_orders +1, Order.count
    assert_equal num_customers +2, Customer.count
  end


  def test_association_assignment_sticks
    post = Post.find(:first)

    author1, author2 = Author.find(:all, :limit => 2)
    assert_not_nil author1
    assert_not_nil author2

    # make sure the association is loaded
    post.author

    # set the association by id, directly
    post.author_id = author2.id

    # save and reload
    post.save!
    post.reload

    # the author id of the post should be the id we set
    assert_equal post.author_id, author2.id
  end

  def test_cant_save_readonly_association
    assert_raise(ActiveRecord::ReadOnlyRecord) { companies(:first_client).readonly_firm.save! }
    assert companies(:first_client).readonly_firm.readonly?
  end
  
  def test_polymorphic_assignment_foreign_type_field_updating
    # should update when assigning a saved record
    sponsor = Sponsor.new
    member = Member.create
    sponsor.sponsorable = member
    assert_equal "Member", sponsor.sponsorable_type
    
    # should update when assigning a new record
    sponsor = Sponsor.new
    member = Member.new
    sponsor.sponsorable = member
    assert_equal "Member", sponsor.sponsorable_type
  end
  
  def test_polymorphic_assignment_updates_foreign_id_field_for_new_and_saved_records
    sponsor = Sponsor.new
    saved_member = Member.create
    new_member = Member.new
    
    sponsor.sponsorable = saved_member
    assert_equal saved_member.id, sponsor.sponsorable_id
    
    sponsor.sponsorable = new_member
    assert_equal nil, sponsor.sponsorable_id
  end

  def test_save_fails_for_invalid_belongs_to
    assert log = AuditLog.create(:developer_id=>0,:message=>"")

    log.developer = Developer.new
    assert !log.developer.valid?
    assert !log.valid?
    assert !log.save
    assert_equal "is invalid", log.errors.on("developer")
  end

  def test_save_succeeds_for_invalid_belongs_to_with_validate_false
    assert log = AuditLog.create(:developer_id=>0,:message=>"")

    log.unvalidated_developer = Developer.new
    assert !log.unvalidated_developer.valid?
    assert log.valid?
    assert log.save
  end

  def test_belongs_to_proxy_should_not_respond_to_private_methods
    assert_raises(NoMethodError) { companies(:first_firm).private_method }
    assert_raises(NoMethodError) { companies(:second_client).firm.private_method }
  end

  def test_belongs_to_proxy_should_respond_to_private_methods_via_send
    companies(:first_firm).send(:private_method)
    companies(:second_client).firm.send(:private_method)
  end
end