summaryrefslogtreecommitdiff
path: root/qa/spec/support/repeater_spec.rb
blob: 4fa3bcde5e7788fd36d70fb2f6318486b30a7407 (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
# frozen_string_literal: true

require 'active_support/core_ext/integer/time'

RSpec.describe QA::Support::Repeater do
  before do
    logger = ::Logger.new $stdout
    logger.level = ::Logger::DEBUG
    QA::Runtime::Logger.logger = logger
  end

  subject do
    Module.new do
      extend QA::Support::Repeater
    end
  end

  let(:time_start) { Time.now }
  let(:return_value) { "test passed" }

  describe '.repeat_until' do
    context 'when raise_on_failure is not provided (default: true)' do
      context 'when retry_on_exception is not provided (default: false)' do
        context 'when max_duration is provided' do
          context 'when max duration is reached' do
            it 'raises an exception with default message' do
              expect do
                Timecop.freeze do
                  subject.repeat_until(max_duration: 1) do
                    Timecop.travel(2)
                    false
                  end
                end
              end.to raise_error(QA::Support::Repeater::WaitExceededError, "Wait failed after 1 second")
            end

            it 'raises an exception with custom message' do
              message = 'Some custom action'

              expect do
                Timecop.freeze do
                  subject.repeat_until(max_duration: 1, message: message) do
                    Timecop.travel(2)
                    false
                  end
                end
              end.to raise_error(QA::Support::Repeater::WaitExceededError, "#{message} failed after 1 second")
            end

            it 'ignores attempts' do
              loop_counter = 0

              expect(
                Timecop.freeze do
                  subject.repeat_until(max_duration: 1) do
                    loop_counter += 1

                    if loop_counter > 3
                      Timecop.travel(1)
                      return_value
                    else
                      false
                    end
                  end
                end
              ).to eq(return_value)
              expect(loop_counter).to eq(4)
            end
          end

          context 'when max duration is not reached' do
            it 'returns value from block' do
              Timecop.freeze(time_start) do
                expect(
                  subject.repeat_until(max_duration: 1) do
                    return_value
                  end
                ).to eq(return_value)
              end
            end
          end
        end

        context 'when max_attempts is provided' do
          context 'when max_attempts is reached' do
            it 'raises an exception with default message' do
              expect do
                Timecop.freeze do
                  subject.repeat_until(max_attempts: 1) do
                    false
                  end
                end
              end.to raise_error(QA::Support::Repeater::RetriesExceededError, "Retry failed after 1 attempt")
            end

            it 'raises an exception with custom message' do
              message = 'Some custom action'

              expect do
                Timecop.freeze do
                  subject.repeat_until(max_attempts: 1, message: message) do
                    false
                  end
                end
              end.to raise_error(QA::Support::Repeater::RetriesExceededError, "#{message} failed after 1 attempt")
            end

            it 'ignores duration' do
              loop_counter = 0

              expect(
                Timecop.freeze do
                  subject.repeat_until(max_attempts: 2) do
                    loop_counter += 1
                    Timecop.travel(1.year)

                    if loop_counter > 1
                      return_value
                    else
                      false
                    end
                  end
                end
              ).to eq(return_value)
              expect(loop_counter).to eq(2)
            end
          end

          context 'when max_attempts is not reached' do
            it 'returns value from block' do
              expect(
                Timecop.freeze do
                  subject.repeat_until(max_attempts: 1) do
                    return_value
                  end
                end
              ).to eq(return_value)
            end
          end
        end

        context 'when both max_attempts and max_duration are provided' do
          context 'when max_attempts is reached first' do
            it 'raises an exception' do
              loop_counter = 0
              expect do
                Timecop.freeze do
                  subject.repeat_until(max_attempts: 1, max_duration: 2) do
                    loop_counter += 1
                    Timecop.travel(time_start + loop_counter)
                    false
                  end
                end
              end.to raise_error(QA::Support::Repeater::RetriesExceededError, "Retry failed after 1 attempt")
            end
          end

          context 'when max_duration is reached first' do
            it 'raises an exception' do
              loop_counter = 0
              expect do
                Timecop.freeze do
                  subject.repeat_until(max_attempts: 2, max_duration: 1) do
                    loop_counter += 1
                    Timecop.travel(time_start + loop_counter)
                    false
                  end
                end
              end.to raise_error(QA::Support::Repeater::WaitExceededError, "Wait failed after 1 second")
            end
          end
        end
      end

      context 'when retry_on_exception is true' do
        context 'when max duration is reached' do
          it 'raises an exception' do
            Timecop.freeze do
              expect do
                subject.repeat_until(max_duration: 1, retry_on_exception: true) do
                  Timecop.travel(2)

                  raise "this should be raised"
                end
              end.to raise_error(RuntimeError, "this should be raised")
            end
          end

          it 'does not raise an exception until max_duration is reached' do
            loop_counter = 0

            Timecop.freeze(time_start) do
              expect do
                subject.repeat_until(max_duration: 2, retry_on_exception: true) do
                  loop_counter += 1
                  Timecop.travel(time_start + loop_counter)

                  raise "this should be raised"
                end
              end.to raise_error(RuntimeError, "this should be raised")
            end
            expect(loop_counter).to eq(2)
          end
        end

        context 'when max duration is not reached' do
          it 'returns value from block' do
            loop_counter = 0

            Timecop.freeze(time_start) do
              expect(
                subject.repeat_until(max_duration: 3, retry_on_exception: true) do
                  loop_counter += 1
                  Timecop.travel(time_start + loop_counter)

                  raise "this should not be raised" if loop_counter == 1

                  return_value
                end
              ).to eq(return_value)
            end
            expect(loop_counter).to eq(2)
          end
        end

        context 'when both max_attempts and max_duration are provided' do
          context 'when max_attempts is reached first' do
            it 'raises an exception' do
              loop_counter = 0
              expect do
                Timecop.freeze do
                  subject.repeat_until(max_attempts: 1, max_duration: 2, retry_on_exception: true) do
                    loop_counter += 1
                    Timecop.travel(time_start + loop_counter)
                    false
                  end
                end
              end.to raise_error(QA::Support::Repeater::RetriesExceededError, "Retry failed after 1 attempt")
            end
          end

          context 'when max_duration is reached first' do
            it 'raises an exception' do
              loop_counter = 0
              expect do
                Timecop.freeze do
                  subject.repeat_until(max_attempts: 2, max_duration: 1, retry_on_exception: true) do
                    loop_counter += 1
                    Timecop.travel(time_start + loop_counter)
                    false
                  end
                end
              end.to raise_error(QA::Support::Repeater::WaitExceededError, "Wait failed after 1 second")
            end
          end
        end
      end
    end

    context 'when raise_on_failure is false' do
      context 'when retry_on_exception is not provided (default: false)' do
        context 'when max duration is reached' do
          def test_wait
            Timecop.freeze do
              subject.repeat_until(max_duration: 1, raise_on_failure: false) do
                Timecop.travel(2)
                return_value
              end
            end
          end

          it 'does not raise an exception' do
            expect { test_wait }.not_to raise_error
          end

          it 'returns the value from the block' do
            expect(test_wait).to eq(return_value)
          end
        end

        context 'when max duration is not reached' do
          it 'returns the value from the block' do
            Timecop.freeze do
              expect(
                subject.repeat_until(max_duration: 1, raise_on_failure: false) do
                  return_value
                end
              ).to eq(return_value)
            end
          end

          it 'raises an exception' do
            Timecop.freeze do
              expect do
                subject.repeat_until(max_duration: 1, raise_on_failure: false) do
                  raise "this should be raised"
                end
              end.to raise_error(RuntimeError, "this should be raised")
            end
          end
        end

        context 'when both max_attempts and max_duration are provided' do
          shared_examples 'repeat until' do |max_attempts:, max_duration:|
            it "returns when #{max_attempts < max_duration ? 'max_attempts' : 'max_duration'} is reached" do
              loop_counter = 0

              expect(
                Timecop.freeze do
                  subject.repeat_until(max_attempts: max_attempts, max_duration: max_duration, raise_on_failure: false) do
                    loop_counter += 1
                    Timecop.travel(time_start + loop_counter)
                    false
                  end
                end
              ).to eq(false)
              expect(loop_counter).to eq(1)
            end
          end

          context 'when max_attempts is reached first' do
            it_behaves_like 'repeat until', max_attempts: 1, max_duration: 2
          end

          context 'when max_duration is reached first' do
            it_behaves_like 'repeat until', max_attempts: 2, max_duration: 1
          end
        end
      end

      context 'when retry_on_exception is true' do
        context 'when max duration is reached' do
          def test_wait
            Timecop.freeze do
              subject.repeat_until(max_duration: 1, raise_on_failure: false, retry_on_exception: true) do
                Timecop.travel(2)
                return_value
              end
            end
          end

          it 'does not raise an exception' do
            expect { test_wait }.not_to raise_error
          end

          it 'returns the value from the block' do
            expect(test_wait).to eq(return_value)
          end
        end

        context 'when max duration is not reached' do
          before do
            @loop_counter = 0
          end

          def test_wait_with_counter
            Timecop.freeze(time_start) do
              subject.repeat_until(max_duration: 3, raise_on_failure: false, retry_on_exception: true) do
                @loop_counter += 1
                Timecop.travel(time_start + @loop_counter)

                raise "this should not be raised" if @loop_counter == 1

                return_value
              end
            end
          end

          it 'does not raise an exception' do
            expect { test_wait_with_counter }.not_to raise_error
          end

          it 'returns the value from the block' do
            expect(test_wait_with_counter).to eq(return_value)
            expect(@loop_counter).to eq(2)
          end
        end

        context 'when both max_attempts and max_duration are provided' do
          shared_examples 'repeat until' do |max_attempts:, max_duration:|
            it "returns when #{max_attempts < max_duration ? 'max_attempts' : 'max_duration'} is reached" do
              loop_counter = 0

              expect(
                Timecop.freeze do
                  subject.repeat_until(max_attempts: max_attempts, max_duration: max_duration, raise_on_failure: false, retry_on_exception: true) do
                    loop_counter += 1
                    Timecop.travel(time_start + loop_counter)
                    false
                  end
                end
              ).to eq(false)
              expect(loop_counter).to eq(1)
            end
          end

          context 'when max_attempts is reached first' do
            it_behaves_like 'repeat until', max_attempts: 1, max_duration: 2
          end

          context 'when max_duration is reached first' do
            it_behaves_like 'repeat until', max_attempts: 2, max_duration: 1
          end
        end
      end
    end

    context 'with logging' do
      before do
        allow(QA::Runtime::Logger).to receive(:debug)
      end

      it 'skips logging single attempt with max_attempts' do
        subject.repeat_until(max_attempts: 3) do
          true
        end

        expect(QA::Runtime::Logger).not_to have_received(:debug)
      end

      it 'skips logging single attempt with max_duration' do
        subject.repeat_until(max_duration: 3) do
          true
        end

        expect(QA::Runtime::Logger).not_to have_received(:debug)
      end

      it 'allows logging to be silenced' do
        subject.repeat_until(max_attempts: 3, log: false, raise_on_failure: false) do
          false
        end

        expect(QA::Runtime::Logger).not_to have_received(:debug)
      end

      it 'starts logging on subsequent attempts for max_duration' do
        subject.repeat_until(max_duration: 0.3, sleep_interval: 0.1, raise_on_failure: false) do
          false
        end

        aggregate_failures do
          expect(QA::Runtime::Logger).to have_received(:debug).with(<<~MSG.strip).ordered.once
            Retrying action with: max_duration: 0.3; sleep_interval: 0.1; raise_on_failure: false; retry_on_exception: false
          MSG
          expect(QA::Runtime::Logger).to have_received(:debug).with('ended retry').ordered.once
          expect(QA::Runtime::Logger).not_to have_received(:debug).with(/Attempt number/)
        end
      end

      it 'starts logging subsequent attempts for max_attempts' do
        attempts = 0
        subject.repeat_until(max_attempts: 4, raise_on_failure: false) do
          next true if attempts == 2

          attempts += 1
          false
        end

        aggregate_failures do
          expect(QA::Runtime::Logger).to have_received(:debug).with(<<~MSG.strip).ordered.once
            Retrying action with: max_attempts: 4; sleep_interval: 0; raise_on_failure: false; retry_on_exception: false
          MSG
          expect(QA::Runtime::Logger).to have_received(:debug).with('Attempt number 2').ordered.once
          expect(QA::Runtime::Logger).to have_received(:debug).with('Attempt number 3').ordered.once
          expect(QA::Runtime::Logger).to have_received(:debug).with('ended retry').ordered.once
        end
      end
    end
  end
end