summaryrefslogtreecommitdiff
path: root/spec/models/blob_spec.rb
blob: c2d6406c3fb19fa616668ffa90b3dbeac84a11bb (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
# frozen_string_literal: true

require 'spec_helper'

describe Blob do
  include FakeBlobHelpers

  using RSpec::Parameterized::TableSyntax

  let(:project) { build(:project) }
  let(:personal_snippet) { build(:personal_snippet) }
  let(:project_snippet) { build(:project_snippet, project: project) }

  let(:repository) { project.repository }
  let(:lfs_enabled) { true }

  before do
    allow(repository).to receive(:lfs_enabled?) { lfs_enabled }
  end

  describe '.decorate' do
    it 'returns NilClass when given nil' do
      expect(described_class.decorate(nil)).to be_nil
    end
  end

  describe '.lazy' do
    let(:commit_id) { 'e63f41fe459e62e1228fcef60d7189127aeba95a' }
    let(:blob_size_limit) { 10 * 1024 * 1024 }

    shared_examples '.lazy checks' do
      it 'does not fetch blobs when none are accessed' do
        expect(container.repository).not_to receive(:blobs_at)

        described_class.lazy(container.repository, commit_id, 'CHANGELOG')
      end

      it 'fetches all blobs for the same repository when one is accessed' do
        expect(container.repository).to receive(:blobs_at)
          .with([[commit_id, 'CHANGELOG'], [commit_id, 'CONTRIBUTING.md']], blob_size_limit: blob_size_limit)
          .once.and_call_original
        expect(other_container.repository).not_to receive(:blobs_at)

        changelog = described_class.lazy(container.repository, commit_id, 'CHANGELOG')
        contributing = described_class.lazy(same_container.repository, commit_id, 'CONTRIBUTING.md')

        described_class.lazy(other_container.repository, commit_id, 'CHANGELOG')

        # Access property so the values are loaded
        changelog.id
        contributing.id
      end

      it 'does not include blobs from previous requests in later requests' do
        changelog = described_class.lazy(container.repository, commit_id, 'CHANGELOG')
        contributing = described_class.lazy(same_container.repository, commit_id, 'CONTRIBUTING.md')

        # Access property so the values are loaded
        changelog.id
        contributing.id

        readme = described_class.lazy(container.repository, commit_id, 'README.md')

        expect(container.repository).to receive(:blobs_at)
          .with([[commit_id, 'README.md']], blob_size_limit: blob_size_limit).once.and_call_original

        readme.id
      end
    end

    context 'with project' do
      let(:container) { create(:project, :repository) }
      let(:same_container) { Project.find(container.id) }
      let(:other_container) { create(:project, :repository) }

      it_behaves_like '.lazy checks'
    end

    context 'with personal snippet' do
      let(:container) { create(:personal_snippet, :repository) }
      let(:same_container) { PersonalSnippet.find(container.id) }
      let(:other_container) { create(:personal_snippet, :repository) }

      it_behaves_like '.lazy checks'
    end

    context 'with project snippet' do
      let(:container) { create(:project_snippet, :repository) }
      let(:same_container) { ProjectSnippet.find(container.id) }
      let(:other_container) { create(:project_snippet, :repository) }

      it_behaves_like '.lazy checks'
    end
  end

  describe '#data' do
    shared_examples '#data checks' do
      context 'using a binary blob' do
        it 'returns the data as-is' do
          data = "\n\xFF\xB9\xC3"
          blob = fake_blob(binary: true, data: data, container: container)

          expect(blob.data).to eq(data)
        end
      end

      context 'using a text blob' do
        it 'converts the data to UTF-8' do
          blob = fake_blob(binary: false, data: "\n\xFF\xB9\xC3", container: container)

          expect(blob.data).to eq("\n���")
        end
      end
    end

    context 'with project' do
      let(:container) { project }

      it_behaves_like '#data checks'
    end

    context 'with personal snippet' do
      let(:container) { personal_snippet }

      it_behaves_like '#data checks'
    end

    context 'with project snippet' do
      let(:container) { project_snippet }

      it_behaves_like '#data checks'
    end
  end

  describe '#external_storage_error?' do
    subject { blob.external_storage_error? }

    context 'if the blob is stored in LFS' do
      let(:blob) { fake_blob(path: 'file.pdf', lfs: true) }

      context 'when LFS is enabled' do
        let(:lfs_enabled) { true }

        it { is_expected.to be_falsy }
      end

      context 'when LFS is not enabled' do
        let(:lfs_enabled) { false }

        it { is_expected.to be_truthy }
      end
    end

    context 'if the blob is not stored in LFS' do
      let(:blob) { fake_blob(path: 'file.md') }

      it { is_expected.to be_falsy }
    end
  end

  describe '#stored_externally?' do
    subject { blob.stored_externally? }

    context 'if the blob is stored in LFS' do
      let(:blob) { fake_blob(path: 'file.pdf', lfs: true) }

      context 'when LFS is enabled' do
        let(:lfs_enabled) { true }

        it { is_expected.to be_truthy }
      end

      context 'when LFS is not enabled' do
        let(:lfs_enabled) { false }

        it { is_expected.to be_falsy }
      end
    end

    context 'if the blob is not stored in LFS' do
      let(:blob) { fake_blob(path: 'file.md') }

      it { is_expected.to be_falsy }
    end
  end

  describe '#binary?' do
    context 'an lfs object' do
      where(:filename, :is_binary) do
        'file.pdf' | true
        'file.md'  | false
        'file.txt' | false
        'file.ics' | false
        'file.rb'  | false
        'file.exe' | true
        'file.ini' | false
        'file.wtf' | true
      end

      with_them do
        let(:blob) { fake_blob(path: filename, lfs: true, container: project) }

        it { expect(blob.binary?).to eq(is_binary) }
      end
    end

    context 'a non-lfs object' do
      let(:blob) { fake_blob(path: 'anything', container: project) }

      it 'delegates to binary_in_repo?' do
        expect(blob).to receive(:binary_in_repo?) { :result }

        expect(blob.binary?).to eq(:result)
      end
    end
  end

  describe '#extension' do
    it 'returns the extension' do
      blob = fake_blob(path: 'file.md')

      expect(blob.extension).to eq('md')
    end
  end

  describe '#file_type' do
    it 'returns the file type' do
      blob = fake_blob(path: 'README.md')

      expect(blob.file_type).to eq(:readme)
    end
  end

  describe '#simple_viewer' do
    context 'when the blob is empty' do
      it 'returns an empty viewer' do
        blob = fake_blob(data: '', size: 0)

        expect(blob.simple_viewer).to be_a(BlobViewer::Empty)
      end
    end

    context 'when the file represented by the blob is binary' do
      it 'returns a download viewer' do
        blob = fake_blob(binary: true)

        expect(blob.simple_viewer).to be_a(BlobViewer::Download)
      end
    end

    context 'when the file represented by the blob is text-based' do
      it 'returns a text viewer' do
        blob = fake_blob

        expect(blob.simple_viewer).to be_a(BlobViewer::Text)
      end
    end
  end

  describe '#rich_viewer' do
    context 'when the blob has an external storage error' do
      let(:lfs_enabled) { false }

      it 'returns nil' do
        blob = fake_blob(path: 'file.pdf', lfs: true)

        expect(blob.rich_viewer).to be_nil
      end
    end

    context 'when the blob is empty' do
      it 'returns nil' do
        blob = fake_blob(data: '')

        expect(blob.rich_viewer).to be_nil
      end
    end

    context 'when the blob is stored externally' do
      it 'returns a matching viewer' do
        blob = fake_blob(path: 'file.pdf', lfs: true)

        expect(blob.rich_viewer).to be_a(BlobViewer::PDF)
      end
    end

    context 'when the blob is binary' do
      it 'returns a matching binary viewer' do
        blob = fake_blob(path: 'file.pdf', binary: true)

        expect(blob.rich_viewer).to be_a(BlobViewer::PDF)
      end
    end

    context 'when the blob is text-based' do
      it 'returns a matching text-based viewer' do
        blob = fake_blob(path: 'file.md')

        expect(blob.rich_viewer).to be_a(BlobViewer::Markup)
      end
    end

    context 'when the blob is video' do
      it 'returns a video viewer' do
        blob = fake_blob(path: 'file.mp4', binary: true)

        expect(blob.rich_viewer).to be_a(BlobViewer::Video)
      end
    end

    context 'when the blob is audio' do
      it 'returns an audio viewer' do
        blob = fake_blob(path: 'file.wav', binary: true)

        expect(blob.rich_viewer).to be_a(BlobViewer::Audio)
      end
    end
  end

  describe '#auxiliary_viewer' do
    context 'when the blob has an external storage error' do
      let(:lfs_enabled) { false }

      it 'returns nil' do
        blob = fake_blob(path: 'LICENSE', lfs: true)

        expect(blob.auxiliary_viewer).to be_nil
      end
    end

    context 'when the blob is empty' do
      it 'returns nil' do
        blob = fake_blob(data: '')

        expect(blob.auxiliary_viewer).to be_nil
      end
    end

    context 'when the blob is stored externally' do
      it 'returns a matching viewer' do
        blob = fake_blob(path: 'LICENSE', lfs: true)

        expect(blob.auxiliary_viewer).to be_a(BlobViewer::License)
      end
    end

    context 'when the blob is binary' do
      it 'returns nil' do
        blob = fake_blob(path: 'LICENSE', binary: true)

        expect(blob.auxiliary_viewer).to be_nil
      end
    end

    context 'when the blob is text-based' do
      it 'returns a matching text-based viewer' do
        blob = fake_blob(path: 'LICENSE')

        expect(blob.auxiliary_viewer).to be_a(BlobViewer::License)
      end
    end
  end

  describe '#rendered_as_text?' do
    subject { blob.rendered_as_text?(ignore_errors: ignore_errors) }

    context 'when ignoring errors' do
      let(:ignore_errors) { true }

      context 'when the simple viewer is text-based' do
        let(:blob) { fake_blob(path: 'file.md', size: 100.megabytes) }

        it { is_expected.to be_truthy }
      end

      context 'when the simple viewer is binary' do
        let(:blob) { fake_blob(path: 'file.pdf', binary: true, size: 100.megabytes) }

        it { is_expected.to be_falsy }
      end
    end

    context 'when not ignoring errors' do
      let(:ignore_errors) { false }

      context 'when the viewer has render errors' do
        let(:blob) { fake_blob(path: 'file.md', size: 100.megabytes) }

        it { is_expected.to be_falsy }
      end

      context "when the viewer doesn't have render errors" do
        let(:blob) { fake_blob(path: 'file.md') }

        it { is_expected.to be_truthy }
      end
    end
  end

  describe 'policy' do
    let(:project) { build(:project) }

    subject { described_class.new(fake_blob(path: 'foo'), project) }

    it 'works with policy' do
      expect(Ability.allowed?(project.creator, :read_blob, subject)).to be_truthy
    end

    context 'when project is nil' do
      subject { described_class.new(fake_blob(path: 'foo')) }

      it 'does not err' do
        expect(Ability.allowed?(project.creator, :read_blob, subject)).to be_falsey
      end
    end
  end
end