summaryrefslogtreecommitdiff
path: root/spec/requests/api/merge_requests_spec.rb
blob: 61d965e8974fea441c7b59964aa574ddc2fdb894 (plain)
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
require "spec_helper"

describe API::MergeRequests, api: true  do
  include ApiHelpers
  let(:base_time)   { Time.now }
  let(:user)        { create(:user) }
  let(:admin)       { create(:user, :admin) }
  let(:non_member)  { create(:user) }
  let!(:project)    { create(:project, :public, :repository, creator: user, namespace: user.namespace) }
  let!(:merge_request) { create(:merge_request, :simple, author: user, assignee: user, source_project: project, title: "Test", created_at: base_time) }
  let!(:merge_request_closed) { create(:merge_request, state: "closed", author: user, assignee: user, source_project: project, title: "Closed test", created_at: base_time + 1.second) }
  let!(:merge_request_merged) { create(:merge_request, state: "merged", author: user, assignee: user, source_project: project, title: "Merged test", created_at: base_time + 2.seconds, merge_commit_sha: '9999999999999999999999999999999999999999') }
  let(:milestone)   { create(:milestone, title: '1.0.0', project: project) }

  before do
    project.team << [user, :reporter]
  end

  describe "GET /projects/:id/merge_requests" do
    context "when unauthenticated" do
      it "returns authentication error" do
        get api("/projects/#{project.id}/merge_requests")
        expect(response).to have_http_status(401)
      end
    end

    context "when authenticated" do
      it "returns an array of all merge_requests" do
        get api("/projects/#{project.id}/merge_requests", user)

        expect(response).to have_http_status(200)
        expect(response).to include_pagination_headers
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(3)
        expect(json_response.last['title']).to eq(merge_request.title)
        expect(json_response.last).to have_key('web_url')
        expect(json_response.last['sha']).to eq(merge_request.diff_head_sha)
        expect(json_response.last['merge_commit_sha']).to be_nil
        expect(json_response.last['merge_commit_sha']).to eq(merge_request.merge_commit_sha)
        expect(json_response.first['title']).to eq(merge_request_merged.title)
        expect(json_response.first['sha']).to eq(merge_request_merged.diff_head_sha)
        expect(json_response.first['merge_commit_sha']).not_to be_nil
        expect(json_response.first['merge_commit_sha']).to eq(merge_request_merged.merge_commit_sha)
      end

      it "returns an array of all merge_requests" do
        get api("/projects/#{project.id}/merge_requests?state", user)

        expect(response).to have_http_status(200)
        expect(response).to include_pagination_headers
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(3)
        expect(json_response.last['title']).to eq(merge_request.title)
      end

      it "returns an array of open merge_requests" do
        get api("/projects/#{project.id}/merge_requests?state=opened", user)

        expect(response).to have_http_status(200)
        expect(response).to include_pagination_headers
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(1)
        expect(json_response.last['title']).to eq(merge_request.title)
      end

      it "returns an array of closed merge_requests" do
        get api("/projects/#{project.id}/merge_requests?state=closed", user)

        expect(response).to have_http_status(200)
        expect(response).to include_pagination_headers
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(1)
        expect(json_response.first['title']).to eq(merge_request_closed.title)
      end

      it "returns an array of merged merge_requests" do
        get api("/projects/#{project.id}/merge_requests?state=merged", user)

        expect(response).to have_http_status(200)
        expect(response).to include_pagination_headers
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(1)
        expect(json_response.first['title']).to eq(merge_request_merged.title)
      end

      it 'returns merge_request by "iids" array' do
        get api("/projects/#{project.id}/merge_requests", user), iids: [merge_request.iid, merge_request_closed.iid]

        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(2)
        expect(json_response.first['title']).to eq merge_request_closed.title
        expect(json_response.first['id']).to eq merge_request_closed.id
      end

      it 'matches V4 response schema' do
        get api("/projects/#{project.id}/merge_requests", user)

        expect(response).to have_http_status(200)
        expect(response).to match_response_schema('public_api/v4/merge_requests')
      end

      context "with ordering" do
        before do
          @mr_later = mr_with_later_created_and_updated_at_time
          @mr_earlier = mr_with_earlier_created_and_updated_at_time
        end

        it "returns an array of merge_requests in ascending order" do
          get api("/projects/#{project.id}/merge_requests?sort=asc", user)

          expect(response).to have_http_status(200)
          expect(response).to include_pagination_headers
          expect(json_response).to be_an Array
          expect(json_response.length).to eq(3)
          response_dates = json_response.map{ |merge_request| merge_request['created_at'] }
          expect(response_dates).to eq(response_dates.sort)
        end

        it "returns an array of merge_requests in descending order" do
          get api("/projects/#{project.id}/merge_requests?sort=desc", user)

          expect(response).to have_http_status(200)
          expect(response).to include_pagination_headers
          expect(json_response).to be_an Array
          expect(json_response.length).to eq(3)
          response_dates = json_response.map{ |merge_request| merge_request['created_at'] }
          expect(response_dates).to eq(response_dates.sort.reverse)
        end

        it "returns an array of merge_requests ordered by updated_at" do
          get api("/projects/#{project.id}/merge_requests?order_by=updated_at", user)

          expect(response).to have_http_status(200)
          expect(response).to include_pagination_headers
          expect(json_response).to be_an Array
          expect(json_response.length).to eq(3)
          response_dates = json_response.map{ |merge_request| merge_request['updated_at'] }
          expect(response_dates).to eq(response_dates.sort.reverse)
        end

        it "returns an array of merge_requests ordered by created_at" do
          get api("/projects/#{project.id}/merge_requests?order_by=created_at&sort=asc", user)

          expect(response).to have_http_status(200)
          expect(response).to include_pagination_headers
          expect(json_response).to be_an Array
          expect(json_response.length).to eq(3)
          response_dates = json_response.map{ |merge_request| merge_request['created_at'] }
          expect(response_dates).to eq(response_dates.sort)
        end
      end
    end
  end

  describe "GET /projects/:id/merge_requests/:merge_request_iid" do
    it 'exposes known attributes' do
      get api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user)

      expect(response).to have_http_status(200)
      expect(json_response['id']).to eq(merge_request.id)
      expect(json_response['iid']).to eq(merge_request.iid)
      expect(json_response['project_id']).to eq(merge_request.project.id)
      expect(json_response['title']).to eq(merge_request.title)
      expect(json_response['description']).to eq(merge_request.description)
      expect(json_response['state']).to eq(merge_request.state)
      expect(json_response['created_at']).to be_present
      expect(json_response['updated_at']).to be_present
      expect(json_response['labels']).to eq(merge_request.label_names)
      expect(json_response['milestone']).to be_nil
      expect(json_response['assignee']).to be_a Hash
      expect(json_response['author']).to be_a Hash
      expect(json_response['target_branch']).to eq(merge_request.target_branch)
      expect(json_response['source_branch']).to eq(merge_request.source_branch)
      expect(json_response['upvotes']).to eq(0)
      expect(json_response['downvotes']).to eq(0)
      expect(json_response['source_project_id']).to eq(merge_request.source_project.id)
      expect(json_response['target_project_id']).to eq(merge_request.target_project.id)
      expect(json_response['work_in_progress']).to be_falsy
      expect(json_response['merge_when_pipeline_succeeds']).to be_falsy
      expect(json_response['merge_status']).to eq('can_be_merged')
      expect(json_response['should_close_merge_request']).to be_falsy
      expect(json_response['force_close_merge_request']).to be_falsy
    end

    it "returns merge_request" do
      get api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user)
      expect(response).to have_http_status(200)
      expect(json_response['title']).to eq(merge_request.title)
      expect(json_response['iid']).to eq(merge_request.iid)
      expect(json_response['work_in_progress']).to eq(false)
      expect(json_response['merge_status']).to eq('can_be_merged')
      expect(json_response['should_close_merge_request']).to be_falsy
      expect(json_response['force_close_merge_request']).to be_falsy
    end

    it "returns a 404 error if merge_request_iid not found" do
      get api("/projects/#{project.id}/merge_requests/999", user)
      expect(response).to have_http_status(404)
    end

    it "returns a 404 error if merge_request `id` is used instead of iid" do
      get api("/projects/#{project.id}/merge_requests/#{merge_request.id}", user)

      expect(response).to have_http_status(404)
    end

    context 'Work in Progress' do
      let!(:merge_request_wip) { create(:merge_request, author: user, assignee: user, source_project: project, target_project: project, title: "WIP: Test", created_at: base_time + 1.second) }

      it "returns merge_request" do
        get api("/projects/#{project.id}/merge_requests/#{merge_request_wip.iid}", user)
        expect(response).to have_http_status(200)
        expect(json_response['work_in_progress']).to eq(true)
      end
    end
  end

  describe 'GET /projects/:id/merge_requests/:merge_request_iid/commits' do
    it 'returns a 200 when merge request is valid' do
      get api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/commits", user)
      commit = merge_request.commits.first

      expect(response.status).to eq 200
      expect(response).to include_pagination_headers
      expect(json_response).to be_an Array
      expect(json_response.size).to eq(merge_request.commits.size)
      expect(json_response.first['id']).to eq(commit.id)
      expect(json_response.first['title']).to eq(commit.title)
    end

    it 'returns a 404 when merge_request_iid not found' do
      get api("/projects/#{project.id}/merge_requests/999/commits", user)
      expect(response).to have_http_status(404)
    end

    it 'returns a 404 when merge_request id is used instead of iid' do
      get api("/projects/#{project.id}/merge_requests/#{merge_request.id}/commits", user)

      expect(response).to have_http_status(404)
    end
  end

  describe 'GET /projects/:id/merge_requests/:merge_request_iid/changes' do
    it 'returns the change information of the merge_request' do
      get api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/changes", user)

      expect(response.status).to eq 200
      expect(json_response['changes'].size).to eq(merge_request.diffs.size)
    end

    it 'returns a 404 when merge_request_iid not found' do
      get api("/projects/#{project.id}/merge_requests/999/changes", user)
      expect(response).to have_http_status(404)
    end

    it 'returns a 404 when merge_request id is used instead of iid' do
      get api("/projects/#{project.id}/merge_requests/#{merge_request.id}/changes", user)

      expect(response).to have_http_status(404)
    end
  end

  describe "POST /projects/:id/merge_requests" do
    context 'between branches projects' do
      it "returns merge_request" do
        post api("/projects/#{project.id}/merge_requests", user),
             title: 'Test merge_request',
             source_branch: 'feature_conflict',
             target_branch: 'master',
             author: user,
             labels: 'label, label2',
             milestone_id: milestone.id,
             remove_source_branch: true

        expect(response).to have_http_status(201)
        expect(json_response['title']).to eq('Test merge_request')
        expect(json_response['labels']).to eq(%w(label label2))
        expect(json_response['milestone']['id']).to eq(milestone.id)
        expect(json_response['force_remove_source_branch']).to be_truthy
      end

      it "returns 422 when source_branch equals target_branch" do
        post api("/projects/#{project.id}/merge_requests", user),
        title: "Test merge_request", source_branch: "master", target_branch: "master", author: user
        expect(response).to have_http_status(422)
      end

      it "returns 400 when source_branch is missing" do
        post api("/projects/#{project.id}/merge_requests", user),
        title: "Test merge_request", target_branch: "master", author: user
        expect(response).to have_http_status(400)
      end

      it "returns 400 when target_branch is missing" do
        post api("/projects/#{project.id}/merge_requests", user),
        title: "Test merge_request", source_branch: "markdown", author: user
        expect(response).to have_http_status(400)
      end

      it "returns 400 when title is missing" do
        post api("/projects/#{project.id}/merge_requests", user),
        target_branch: 'master', source_branch: 'markdown'
        expect(response).to have_http_status(400)
      end

      it 'allows special label names' do
        post api("/projects/#{project.id}/merge_requests", user),
             title: 'Test merge_request',
             source_branch: 'markdown',
             target_branch: 'master',
             author: user,
             labels: 'label, label?, label&foo, ?, &'
        expect(response.status).to eq(201)
        expect(json_response['labels']).to include 'label'
        expect(json_response['labels']).to include 'label?'
        expect(json_response['labels']).to include 'label&foo'
        expect(json_response['labels']).to include '?'
        expect(json_response['labels']).to include '&'
      end

      context 'with existing MR' do
        before do
          post api("/projects/#{project.id}/merge_requests", user),
               title: 'Test merge_request',
               source_branch: 'feature_conflict',
               target_branch: 'master',
               author: user
          @mr = MergeRequest.all.last
        end

        it 'returns 409 when MR already exists for source/target' do
          expect do
            post api("/projects/#{project.id}/merge_requests", user),
                 title: 'New test merge_request',
                 source_branch: 'feature_conflict',
                 target_branch: 'master',
                 author: user
          end.to change { MergeRequest.count }.by(0)
          expect(response).to have_http_status(409)
        end
      end
    end

    context 'forked projects' do
      let!(:user2) { create(:user) }
      let!(:fork_project) { create(:empty_project, forked_from_project: project,  namespace: user2.namespace, creator_id: user2.id) }
      let!(:unrelated_project) { create(:empty_project,  namespace: create(:user).namespace, creator_id: user2.id) }

      before :each do |each|
        fork_project.team << [user2, :reporter]
      end

      it "returns merge_request" do
        post api("/projects/#{fork_project.id}/merge_requests", user2),
          title: 'Test merge_request', source_branch: "feature_conflict", target_branch: "master",
          author: user2, target_project_id: project.id, description: 'Test description for Test merge_request'
        expect(response).to have_http_status(201)
        expect(json_response['title']).to eq('Test merge_request')
        expect(json_response['description']).to eq('Test description for Test merge_request')
      end

      it "does not return 422 when source_branch equals target_branch" do
        expect(project.id).not_to eq(fork_project.id)
        expect(fork_project.forked?).to be_truthy
        expect(fork_project.forked_from_project).to eq(project)
        post api("/projects/#{fork_project.id}/merge_requests", user2),
        title: 'Test merge_request', source_branch: "master", target_branch: "master", author: user2, target_project_id: project.id
        expect(response).to have_http_status(201)
        expect(json_response['title']).to eq('Test merge_request')
      end

      it "returns 400 when source_branch is missing" do
        post api("/projects/#{fork_project.id}/merge_requests", user2),
        title: 'Test merge_request', target_branch: "master", author: user2, target_project_id: project.id
        expect(response).to have_http_status(400)
      end

      it "returns 400 when target_branch is missing" do
        post api("/projects/#{fork_project.id}/merge_requests", user2),
        title: 'Test merge_request', target_branch: "master", author: user2, target_project_id: project.id
        expect(response).to have_http_status(400)
      end

      it "returns 400 when title is missing" do
        post api("/projects/#{fork_project.id}/merge_requests", user2),
        target_branch: 'master', source_branch: 'markdown', author: user2, target_project_id: project.id
        expect(response).to have_http_status(400)
      end

      context 'when target_branch is specified' do
        it 'returns 422 if not a forked project' do
          post api("/projects/#{project.id}/merge_requests", user),
               title: 'Test merge_request',
               target_branch: 'master',
               source_branch: 'markdown',
               author: user,
               target_project_id: fork_project.id
          expect(response).to have_http_status(422)
        end

        it 'returns 422 if targeting a different fork' do
          post api("/projects/#{fork_project.id}/merge_requests", user2),
               title: 'Test merge_request',
               target_branch: 'master',
               source_branch: 'markdown',
               author: user2,
               target_project_id: unrelated_project.id
          expect(response).to have_http_status(422)
        end
      end

      it "returns 201 when target_branch is specified and for the same project" do
        post api("/projects/#{fork_project.id}/merge_requests", user2),
        title: 'Test merge_request', target_branch: 'master', source_branch: 'markdown', author: user2, target_project_id: fork_project.id
        expect(response).to have_http_status(201)
      end
    end
  end

  describe "DELETE /projects/:id/merge_requests/:merge_request_iid" do
    context "when the user is developer" do
      let(:developer) { create(:user) }

      before do
        project.team << [developer, :developer]
      end

      it "denies the deletion of the merge request" do
        delete api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", developer)
        expect(response).to have_http_status(403)
      end
    end

    context "when the user is project owner" do
      it "destroys the merge request owners can destroy" do
        delete api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user)

        expect(response).to have_http_status(204)
      end

      it "returns 404 for an invalid merge request IID" do
        delete api("/projects/#{project.id}/merge_requests/12345", user)

        expect(response).to have_http_status(404)
      end

      it "returns 404 if the merge request id is used instead of iid" do
        delete api("/projects/#{project.id}/merge_requests/#{merge_request.id}", user)

        expect(response).to have_http_status(404)
      end
    end
  end

  describe "PUT /projects/:id/merge_requests/:merge_request_iid/merge" do
    let(:pipeline) { create(:ci_pipeline_without_jobs) }

    it "returns merge_request in case of success" do
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/merge", user)

      expect(response).to have_http_status(200)
    end

    it "returns 406 if branch can't be merged" do
      allow_any_instance_of(MergeRequest).
        to receive(:can_be_merged?).and_return(false)

      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/merge", user)

      expect(response).to have_http_status(406)
      expect(json_response['message']).to eq('Branch cannot be merged')
    end

    it "returns 405 if merge_request is not open" do
      merge_request.close
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/merge", user)
      expect(response).to have_http_status(405)
      expect(json_response['message']).to eq('405 Method Not Allowed')
    end

    it "returns 405 if merge_request is a work in progress" do
      merge_request.update_attribute(:title, "WIP: #{merge_request.title}")
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/merge", user)
      expect(response).to have_http_status(405)
      expect(json_response['message']).to eq('405 Method Not Allowed')
    end

    it 'returns 405 if the build failed for a merge request that requires success' do
      allow_any_instance_of(MergeRequest).to receive(:mergeable_ci_state?).and_return(false)

      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/merge", user)

      expect(response).to have_http_status(405)
      expect(json_response['message']).to eq('405 Method Not Allowed')
    end

    it "returns 401 if user has no permissions to merge" do
      user2 = create(:user)
      project.team << [user2, :reporter]
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/merge", user2)
      expect(response).to have_http_status(401)
      expect(json_response['message']).to eq('401 Unauthorized')
    end

    it "returns 409 if the SHA parameter doesn't match" do
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/merge", user), sha: merge_request.diff_head_sha.reverse

      expect(response).to have_http_status(409)
      expect(json_response['message']).to start_with('SHA does not match HEAD of source branch')
    end

    it "succeeds if the SHA parameter matches" do
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/merge", user), sha: merge_request.diff_head_sha

      expect(response).to have_http_status(200)
    end

    it "enables merge when pipeline succeeds if the pipeline is active" do
      allow_any_instance_of(MergeRequest).to receive(:head_pipeline).and_return(pipeline)
      allow(pipeline).to receive(:active?).and_return(true)

      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/merge", user), merge_when_pipeline_succeeds: true

      expect(response).to have_http_status(200)
      expect(json_response['title']).to eq('Test')
      expect(json_response['merge_when_pipeline_succeeds']).to eq(true)
    end

    it "returns 404 for an invalid merge request IID" do
      put api("/projects/#{project.id}/merge_requests/12345/merge", user)

      expect(response).to have_http_status(404)
    end

    it "returns 404 if the merge request id is used instead of iid" do
      put api("/projects/#{project.id}/merge_requests/#{merge_request.id}/merge", user)

      expect(response).to have_http_status(404)
    end
  end

  describe "PUT /projects/:id/merge_requests/:merge_request_iid" do
    context "to close a MR" do
      it "returns merge_request" do
        put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user), state_event: "close"

        expect(response).to have_http_status(200)
        expect(json_response['state']).to eq('closed')
      end
    end

    it "updates title and returns merge_request" do
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user), title: "New title"
      expect(response).to have_http_status(200)
      expect(json_response['title']).to eq('New title')
    end

    it "updates description and returns merge_request" do
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user), description: "New description"
      expect(response).to have_http_status(200)
      expect(json_response['description']).to eq('New description')
    end

    it "updates milestone_id and returns merge_request" do
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user), milestone_id: milestone.id
      expect(response).to have_http_status(200)
      expect(json_response['milestone']['id']).to eq(milestone.id)
    end

    it "returns merge_request with renamed target_branch" do
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user), target_branch: "wiki"
      expect(response).to have_http_status(200)
      expect(json_response['target_branch']).to eq('wiki')
    end

    it "returns merge_request that removes the source branch" do
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user), remove_source_branch: true

      expect(response).to have_http_status(200)
      expect(json_response['force_remove_source_branch']).to be_truthy
    end

    it 'allows special label names' do
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user),
        title: 'new issue',
        labels: 'label, label?, label&foo, ?, &'

      expect(response.status).to eq(200)
      expect(json_response['labels']).to include 'label'
      expect(json_response['labels']).to include 'label?'
      expect(json_response['labels']).to include 'label&foo'
      expect(json_response['labels']).to include '?'
      expect(json_response['labels']).to include '&'
    end

    it 'does not update state when title is empty' do
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user), state_event: 'close', title: nil

      merge_request.reload
      expect(response).to have_http_status(400)
      expect(merge_request.state).to eq('opened')
    end

    it 'does not update state when target_branch is empty' do
      put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user), state_event: 'close', target_branch: nil

      merge_request.reload
      expect(response).to have_http_status(400)
      expect(merge_request.state).to eq('opened')
    end

    it "returns 404 for an invalid merge request IID" do
      put api("/projects/#{project.id}/merge_requests/12345", user), state_event: "close"

      expect(response).to have_http_status(404)
    end

    it "returns 404 if the merge request id is used instead of iid" do
      put api("/projects/#{project.id}/merge_requests/#{merge_request.id}", user), state_event: "close"

      expect(response).to have_http_status(404)
    end
  end

  describe 'GET :id/merge_requests/:merge_request_iid/closes_issues' do
    it 'returns the issue that will be closed on merge' do
      issue = create(:issue, project: project)
      mr = merge_request.tap do |mr|
        mr.update_attribute(:description, "Closes #{issue.to_reference(mr.project)}")
      end

      get api("/projects/#{project.id}/merge_requests/#{mr.iid}/closes_issues", user)

      expect(response).to have_http_status(200)
      expect(response).to include_pagination_headers
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(1)
      expect(json_response.first['id']).to eq(issue.id)
    end

    it 'returns an empty array when there are no issues to be closed' do
      get api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/closes_issues", user)

      expect(response).to have_http_status(200)
      expect(response).to include_pagination_headers
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(0)
    end

    it 'handles external issues' do
      jira_project = create(:jira_project, :public, name: 'JIR_EXT1')
      issue = ExternalIssue.new("#{jira_project.name}-123", jira_project)
      merge_request = create(:merge_request, :simple, author: user, assignee: user, source_project: jira_project)
      merge_request.update_attribute(:description, "Closes #{issue.to_reference(jira_project)}")

      get api("/projects/#{jira_project.id}/merge_requests/#{merge_request.iid}/closes_issues", user)

      expect(response).to have_http_status(200)
      expect(response).to include_pagination_headers
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(1)
      expect(json_response.first['title']).to eq(issue.title)
      expect(json_response.first['id']).to eq(issue.id)
    end

    it 'returns 403 if the user has no access to the merge request' do
      project = create(:empty_project, :private)
      merge_request = create(:merge_request, :simple, source_project: project)
      guest = create(:user)
      project.team << [guest, :guest]

      get api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/closes_issues", guest)

      expect(response).to have_http_status(403)
    end

    it "returns 404 for an invalid merge request IID" do
      get api("/projects/#{project.id}/merge_requests/12345/closes_issues", user)

      expect(response).to have_http_status(404)
    end

    it "returns 404 if the merge request id is used instead of iid" do
      get api("/projects/#{project.id}/merge_requests/#{merge_request.id}/closes_issues", user)

      expect(response).to have_http_status(404)
    end
  end

  describe 'POST :id/merge_requests/:merge_request_iid/subscribe' do
    it 'subscribes to a merge request' do
      post api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/subscribe", admin)

      expect(response).to have_http_status(201)
      expect(json_response['subscribed']).to eq(true)
    end

    it 'returns 304 if already subscribed' do
      post api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/subscribe", user)

      expect(response).to have_http_status(304)
    end

    it 'returns 404 if the merge request is not found' do
      post api("/projects/#{project.id}/merge_requests/123/subscribe", user)

      expect(response).to have_http_status(404)
    end

    it 'returns 404 if the merge request id is used instead of iid' do
      post api("/projects/#{project.id}/merge_requests/#{merge_request.id}/subscribe", user)

      expect(response).to have_http_status(404)
    end

    it 'returns 403 if user has no access to read code' do
      guest = create(:user)
      project.team << [guest, :guest]

      post api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/subscribe", guest)

      expect(response).to have_http_status(403)
    end
  end

  describe 'POST :id/merge_requests/:merge_request_iid/unsubscribe' do
    it 'unsubscribes from a merge request' do
      post api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/unsubscribe", user)

      expect(response).to have_http_status(201)
      expect(json_response['subscribed']).to eq(false)
    end

    it 'returns 304 if not subscribed' do
      post api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/unsubscribe", admin)

      expect(response).to have_http_status(304)
    end

    it 'returns 404 if the merge request is not found' do
      post api("/projects/#{project.id}/merge_requests/123/unsubscribe", user)

      expect(response).to have_http_status(404)
    end

    it 'returns 404 if the merge request id is used instead of iid' do
      post api("/projects/#{project.id}/merge_requests/#{merge_request.id}/unsubscribe", user)

      expect(response).to have_http_status(404)
    end

    it 'returns 403 if user has no access to read code' do
      guest = create(:user)
      project.team << [guest, :guest]

      post api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/unsubscribe", guest)

      expect(response).to have_http_status(403)
    end
  end

  describe 'Time tracking' do
    let(:issuable) { merge_request }

    include_examples 'time tracking endpoints', 'merge_request'
  end

  def mr_with_later_created_and_updated_at_time
    merge_request
    merge_request.created_at += 1.hour
    merge_request.updated_at += 30.minutes
    merge_request.save
    merge_request
  end

  def mr_with_earlier_created_and_updated_at_time
    merge_request_closed
    merge_request_closed.created_at -= 1.hour
    merge_request_closed.updated_at -= 30.minutes
    merge_request_closed.save
    merge_request_closed
  end
end