-
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
-
785
-
786
-
787
-
788
-
789
-
790
-
791
-
792
-
793
-
794
-
795
-
796
-
797
-
798
-
799
-
800
-
801
-
802
-
803
-
804
-
805
-
806
-
807
-
808
-
809
-
810
-
811
-
812
-
813
-
814
-
815
-
816
-
817
-
818
-
819
-
820
-
821
-
822
-
823
-
824
-
825
-
826
-
827
-
828
-
829
-
830
-
831
-
832
-
833
-
834
-
835
-
836
-
837
-
838
-
839
-
840
-
841
-
842
-
843
-
844
-
845
-
846
-
847
-
848
-
849
-
850
-
851
-
852
-
853
-
854
-
855
-
856
-
857
-
858
-
859
-
860
-
861
-
862
-
863
-
864
-
865
-
866
-
867
-
868
-
869
-
870
-
871
-
872
-
873
-
874
-
875
-
876
-
877
-
878
-
879
-
880
-
881
-
882
-
883
-
884
-
885
-
886
-
887
-
888
-
889
-
890
-
891
-
892
-
893
-
894
-
895
-
896
-
897
-
898
-
899
-
900
-
901
-
902
-
903
-
904
-
905
-
906
-
907
-
908
-
909
-
910
-
911
-
912
-
913
-
914
-
915
-
916
-
917
-
918
-
919
-
920
-
921
-
922
-
923
-
924
-
925
-
926
-
927
-
928
-
929
-
930
-
931
-
932
-
933
-
934
-
935
-
936
-
937
-
938
-
939
-
940
-
941
-
942
-
943
-
944
-
945
-
946
-
947
-
948
-
949
-
950
-
951
-
952
-
953
-
954
-
955
-
956
-
957
-
958
-
959
-
960
-
961
-
962
-
963
-
964
-
965
-
966
-
967
-
968
-
969
-
970
-
971
-
972
-
973
-
974
-
975
-
976
-
977
-
978
-
979
-
980
-
981
-
982
-
983
-
984
-
985
-
986
-
987
-
988
-
989
-
990
-
991
-
992
-
993
-
994
-
995
-
996
-
997
-
998
-
999
-
1000
-
1001
-
1002
-
1003
-
1004
-
1005
-
1006
-
1007
-
1008
-
1009
-
1010
-
1011
-
1012
-
1013
-
1014
-
1015
-
1016
-
1017
-
1018
-
1019
-
1020
-
1021
-
1022
-
1023
-
1024
-
1025
-
1026
-
1027
-
1028
-
1029
-
1030
-
1031
-
1032
-
1033
-
1034
-
1035
-
1036
-
1037
-
1038
-
1039
-
1040
-
1041
-
1042
-
1043
-
1044
-
1045
-
1046
-
1047
-
1048
-
1049
-
1050
-
1051
-
1052
-
1053
-
1054
-
1055
-
1056
-
1057
-
1058
-
1059
-
1060
-
1061
-
1062
-
1063
-
1064
-
1065
-
1066
-
1067
-
1068
-
1069
-
1070
-
1071
-
1072
-
1073
-
1074
-
1075
-
1076
-
1077
-
1078
-
1079
-
1080
-
1081
-
1082
-
1083
-
1084
-
1085
-
1086
-
1087
-
1088
-
1089
-
1090
-
1091
-
1092
-
1093
-
1094
-
1095
-
1096
-
1097
-
1098
-
1099
-
1100
-
1101
-
1102
-
1103
-
1104
-
1105
-
1106
-
1107
-
1108
-
1109
-
1110
-
1111
-
1112
-
1113
-
1114
-
1115
-
1116
-
1117
-
1118
-
1119
-
1120
-
1121
-
1122
-
1123
-
1124
-
1125
-
1126
-
1127
-
1128
-
1129
-
1130
-
1131
-
1132
-
1133
-
1134
-
1135
-
1136
-
1137
-
1138
-
1139
-
1140
-
1141
-
1142
-
1143
-
1144
-
1145
-
1146
-
1147
-
1148
-
1149
-
1150
-
1151
-
1152
-
1153
-
1154
-
1155
-
1156
-
1157
-
1158
-
1159
-
1160
-
1161
-
1162
-
1163
-
1164
-
1165
-
1166
-
1167
-
1168
-
1169
-
1170
-
1171
-
1172
-
1173
-
1174
-
1175
-
1176
-
1177
-
1178
-
1179
-
1180
-
1181
-
1182
-
1183
-
1184
-
1185
-
1186
-
1187
-
1188
-
1189
-
1190
-
1191
-
1192
-
1193
-
1194
-
1195
-
1196
-
1197
-
1198
-
1199
-
1200
-
1201
-
1202
-
1203
-
1204
-
1205
-
1206
-
1207
-
1208
-
1209
-
1210
-
1211
-
1212
-
1213
-
1214
-
1215
-
1216
-
1217
-
1218
-
1219
-
1220
-
1221
-
1222
-
1223
-
1224
-
1225
-
1226
-
1227
-
1228
-
1229
-
1230
-
1231
-
1232
-
1233
-
1234
-
1235
-
1236
-
1237
-
1238
-
1239
-
1240
-
1241
-
1242
-
1243
-
1244
-
1245
-
1246
-
1247
-
1248
-
1249
-
1250
-
1251
-
1252
-
1253
-
1254
-
1255
-
1256
-
1257
-
1258
-
1259
-
1260
-
1261
-
1262
-
1263
-
1264
-
1265
-
1266
-
1267
-
1268
-
1269
-
1270
-
1271
-
1272
-
1273
-
1274
-
1275
-
1276
-
1277
-
1278
-
1279
-
1280
-
1281
-
1282
-
1283
-
1284
-
1285
-
1286
-
1287
-
1288
-
1289
-
1290
-
1291
-
1292
-
1293
-
1294
-
1295
-
1296
-
1297
-
1298
-
1299
-
1300
-
1301
-
1302
-
1303
-
1304
-
1305
-
1306
-
1307
-
1308
-
1309
-
1310
-
1311
-
1312
-
1313
-
1314
-
1315
-
1316
-
1317
-
1318
-
1319
-
1320
-
1321
-
1322
-
1323
-
1324
-
1325
-
1326
-
1327
-
1328
-
1329
-
1330
-
1331
-
1332
-
1333
-
1334
-
1335
-
1336
-
1337
-
1338
-
1339
-
1340
-
1341
-
1342
-
1343
-
1344
-
1345
-
1346
-
1347
-
1348
-
1349
-
1350
-
1351
-
1352
-
1353
-
1354
-
1355
-
1356
-
1357
-
1358
-
1359
-
1360
-
1361
-
1362
-
1363
-
1364
-
1365
-
1366
-
1367
-
1368
-
1369
-
1370
-
1371
-
1372
-
1373
-
1374
-
1375
-
1376
-
1377
-
1378
-
1379
-
1380
-
1381
-
1382
-
1383
-
1384
-
1385
-
1386
-
1387
-
1388
-
1389
-
1390
-
1391
-
1392
-
1393
-
1394
-
1395
-
1396
-
1397
-
1398
-
1399
-
1400
-
1401
-
1402
-
1403
-
1404
-
1405
-
1406
-
1407
-
1408
-
1409
-
1410
-
1411
-
1412
-
1413
-
1414
-
1415
-
1416
-
1417
-
1418
-
1419
-
1420
-
1421
-
1422
-
1423
-
1424
-
1425
-
1426
-
1427
-
1428
-
1429
-
1430
-
1431
-
1432
-
1433
-
1434
-
1435
-
1436
-
1437
-
1438
-
1439
-
1440
-
1441
-
1442
-
1443
-
1444
-
1445
-
1446
-
1447
-
1448
-
1449
-
1450
-
1451
-
1452
-
1453
-
1454
-
1455
-
1456
-
1457
-
1458
-
1459
-
1460
-
1461
-
1462
-
1463
-
1464
-
1465
-
1466
-
1467
-
1468
-
1469
-
1470
-
1471
-
1472
-
1473
-
1474
-
1475
-
1476
-
1477
-
1478
-
1479
-
1480
-
1481
-
1482
-
1483
-
1484
-
1485
-
1486
-
1487
-
1488
-
1489
-
1490
-
1491
-
1492
-
1493
-
1494
-
1495
-
1496
-
1497
-
1498
-
1499
-
1500
-
1501
-
1502
-
1503
-
1504
-
1505
-
1506
-
1507
-
1508
-
1509
-
1510
-
1511
-
1512
-
1513
-
1514
-
1515
-
1516
-
1517
-
1518
-
1519
-
1520
-
1521
-
1522
-
1523
-
1524
-
1525
-
1526
-
1527
-
1528
-
1529
-
1530
-
1531
-
1532
-
1533
-
1534
-
1535
-
1536
-
1537
-
1538
-
1539
-
1540
-
1541
-
1542
-
1543
-
1544
-
1545
-
1546
-
1547
-
1548
-
1549
-
1550
-
1551
-
1552
-
1553
-
1554
-
1555
-
1556
-
1557
-
1558
-
1559
-
1560
-
1561
-
1562
-
1563
-
1564
-
1565
-
1566
-
1567
-
1568
-
1569
-
1570
-
1571
-
1572
-
1573
-
1574
-
1575
-
1576
-
1577
-
1578
-
1579
-
1580
-
1581
-
1582
-
1583
-
1584
-
1585
-
1586
-
1587
-
1588
-
1589
-
1590
-
1591
-
1592
-
1593
-
1594
-
1595
-
1596
-
1597
-
1598
-
1599
-
1600
-
1601
-
1602
-
1603
-
1604
-
1605
-
1606
-
1607
-
1608
-
1609
-
1610
-
1611
-
1612
-
1613
-
1614
-
1615
-
1616
-
1617
-
1618
-
1619
-
1620
-
1621
-
1622
-
1623
-
1624
-
1625
-
1626
-
1627
-
1628
-
1629
-
1630
-
1631
-
1632
-
1633
-
1634
-
1635
-
1636
-
1637
-
1638
-
1639
-
1640
-
1641
-
1642
-
1643
-
1644
-
1645
-
1646
-
1647
-
1648
-
1649
-
1650
-
1651
-
1652
-
1653
-
1654
-
1655
-
1656
-
1657
-
1658
-
1659
-
1660
-
1661
-
1662
-
1663
-
1664
-
1665
-
1666
-
1667
-
1668
-
1669
-
1670
-
1671
-
1672
-
1673
-
1674
-
1675
-
1676
-
1677
-
1678
-
1679
-
1680
-
1681
-
1682
-
1683
-
1684
-
1685
-
1686
-
1687
-
1688
-
1689
-
1690
-
1691
-
1692
-
1693
-
1694
-
1695
-
1696
-
1697
-
1698
-
1699
-
1700
-
1701
-
1702
-
1703
-
1704
-
1705
-
1706
-
1707
-
1708
-
1709
-
1710
-
1711
-
1712
-
1713
-
1714
-
1715
-
1716
-
1717
-
1718
-
1719
-
1720
-
1721
-
1722
-
1723
-
1724
-
1725
-
1726
-
1727
-
1728
-
1729
-
1730
-
1731
-
1732
-
1733
-
1734
-
1735
-
1736
-
1737
-
1738
-
1739
-
1740
-
1741
-
1742
-
1743
-
1744
-
1745
-
1746
-
1747
-
1748
-
1749
-
1750
-
1751
-
1752
-
1753
-
1754
-
1755
-
1756
-
1757
-
1758
-
1759
-
1760
-
1761
-
1762
-
1763
-
1764
-
1765
-
1766
-
1767
-
1768
-
1769
-
1770
-
1771
-
1772
-
1773
-
1774
package assert
import (
"bufio"
"bytes"
"encoding/json"
"errors"
"fmt"
"math"
"os"
"reflect"
"regexp"
"runtime"
"runtime/debug"
"strings"
"time"
"unicode"
"unicode/utf8"
"github.com/davecgh/go-spew/spew"
"github.com/pmezard/go-difflib/difflib"
yaml "gopkg.in/yaml.v3"
)
//go:generate sh -c "cd ../_codegen && go build && cd - && ../_codegen/_codegen -output-package=assert -template=assertion_format.go.tmpl"
// TestingT is an interface wrapper around *testing.T
type TestingT interface {
Errorf(format string, args ...interface{})
}
// ComparisonAssertionFunc is a common function prototype when comparing two values. Can be useful
// for table driven tests.
type ComparisonAssertionFunc func(TestingT, interface{}, interface{}, ...interface{}) bool
// ValueAssertionFunc is a common function prototype when validating a single value. Can be useful
// for table driven tests.
type ValueAssertionFunc func(TestingT, interface{}, ...interface{}) bool
// BoolAssertionFunc is a common function prototype when validating a bool value. Can be useful
// for table driven tests.
type BoolAssertionFunc func(TestingT, bool, ...interface{}) bool
// ErrorAssertionFunc is a common function prototype when validating an error value. Can be useful
// for table driven tests.
type ErrorAssertionFunc func(TestingT, error, ...interface{}) bool
// Comparison is a custom function that returns true on success and false on failure
type Comparison func() (success bool)
/*
Helper functions
*/
// ObjectsAreEqual determines if two objects are considered equal.
//
// This function does no assertion of any kind.
func ObjectsAreEqual(expected, actual interface{}) bool {
if expected == nil || actual == nil {
return expected == actual
}
exp, ok := expected.([]byte)
if !ok {
return reflect.DeepEqual(expected, actual)
}
act, ok := actual.([]byte)
if !ok {
return false
}
if exp == nil || act == nil {
return exp == nil && act == nil
}
return bytes.Equal(exp, act)
}
// ObjectsAreEqualValues gets whether two objects are equal, or if their
// values are equal.
func ObjectsAreEqualValues(expected, actual interface{}) bool {
if ObjectsAreEqual(expected, actual) {
return true
}
actualType := reflect.TypeOf(actual)
if actualType == nil {
return false
}
expectedValue := reflect.ValueOf(expected)
if expectedValue.IsValid() && expectedValue.Type().ConvertibleTo(actualType) {
// Attempt comparison after type conversion
return reflect.DeepEqual(expectedValue.Convert(actualType).Interface(), actual)
}
return false
}
/* CallerInfo is necessary because the assert functions use the testing object
internally, causing it to print the file:line of the assert method, rather than where
the problem actually occurred in calling code.*/
// CallerInfo returns an array of strings containing the file and line number
// of each stack frame leading from the current test to the assert call that
// failed.
func CallerInfo() []string {
var pc uintptr
var ok bool
var file string
var line int
var name string
callers := []string{}
for i := 0; ; i++ {
pc, file, line, ok = runtime.Caller(i)
if !ok {
// The breaks below failed to terminate the loop, and we ran off the
// end of the call stack.
break
}
// This is a huge edge case, but it will panic if this is the case, see #180
if file == "<autogenerated>" {
break
}
f := runtime.FuncForPC(pc)
if f == nil {
break
}
name = f.Name()
// testing.tRunner is the standard library function that calls
// tests. Subtests are called directly by tRunner, without going through
// the Test/Benchmark/Example function that contains the t.Run calls, so
// with subtests we should break when we hit tRunner, without adding it
// to the list of callers.
if name == "testing.tRunner" {
break
}
parts := strings.Split(file, "/")
file = parts[len(parts)-1]
if len(parts) > 1 {
dir := parts[len(parts)-2]
if (dir != "assert" && dir != "mock" && dir != "require") || file == "mock_test.go" {
callers = append(callers, fmt.Sprintf("%s:%d", file, line))
}
}
// Drop the package
segments := strings.Split(name, ".")
name = segments[len(segments)-1]
if isTest(name, "Test") ||
isTest(name, "Benchmark") ||
isTest(name, "Example") {
break
}
}
return callers
}
// Stolen from the `go test` tool.
// isTest tells whether name looks like a test (or benchmark, according to prefix).
// It is a Test (say) if there is a character after Test that is not a lower-case letter.
// We don't want TesticularCancer.
func isTest(name, prefix string) bool {
if !strings.HasPrefix(name, prefix) {
return false
}
if len(name) == len(prefix) { // "Test" is ok
return true
}
r, _ := utf8.DecodeRuneInString(name[len(prefix):])
return !unicode.IsLower(r)
}
func messageFromMsgAndArgs(msgAndArgs ...interface{}) string {
if len(msgAndArgs) == 0 || msgAndArgs == nil {
return ""
}
if len(msgAndArgs) == 1 {
msg := msgAndArgs[0]
if msgAsStr, ok := msg.(string); ok {
return msgAsStr
}
return fmt.Sprintf("%+v", msg)
}
if len(msgAndArgs) > 1 {
return fmt.Sprintf(msgAndArgs[0].(string), msgAndArgs[1:]...)
}
return ""
}
// Aligns the provided message so that all lines after the first line start at the same location as the first line.
// Assumes that the first line starts at the correct location (after carriage return, tab, label, spacer and tab).
// The longestLabelLen parameter specifies the length of the longest label in the output (required becaues this is the
// basis on which the alignment occurs).
func indentMessageLines(message string, longestLabelLen int) string {
outBuf := new(bytes.Buffer)
for i, scanner := 0, bufio.NewScanner(strings.NewReader(message)); scanner.Scan(); i++ {
// no need to align first line because it starts at the correct location (after the label)
if i != 0 {
// append alignLen+1 spaces to align with "{{longestLabel}}:" before adding tab
outBuf.WriteString("\n\t" + strings.Repeat(" ", longestLabelLen+1) + "\t")
}
outBuf.WriteString(scanner.Text())
}
return outBuf.String()
}
type failNower interface {
FailNow()
}
// FailNow fails test
func FailNow(t TestingT, failureMessage string, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
Fail(t, failureMessage, msgAndArgs...)
// We cannot extend TestingT with FailNow() and
// maintain backwards compatibility, so we fallback
// to panicking when FailNow is not available in
// TestingT.
// See issue #263
if t, ok := t.(failNower); ok {
t.FailNow()
} else {
panic("test failed and t is missing `FailNow()`")
}
return false
}
// Fail reports a failure through
func Fail(t TestingT, failureMessage string, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
content := []labeledContent{
{"Error Trace", strings.Join(CallerInfo(), "\n\t\t\t")},
{"Error", failureMessage},
}
// Add test name if the Go version supports it
if n, ok := t.(interface {
Name() string
}); ok {
content = append(content, labeledContent{"Test", n.Name()})
}
message := messageFromMsgAndArgs(msgAndArgs...)
if len(message) > 0 {
content = append(content, labeledContent{"Messages", message})
}
t.Errorf("\n%s", ""+labeledOutput(content...))
return false
}
type labeledContent struct {
label string
content string
}
// labeledOutput returns a string consisting of the provided labeledContent. Each labeled output is appended in the following manner:
//
// \t{{label}}:{{align_spaces}}\t{{content}}\n
//
// The initial carriage return is required to undo/erase any padding added by testing.T.Errorf. The "\t{{label}}:" is for the label.
// If a label is shorter than the longest label provided, padding spaces are added to make all the labels match in length. Once this
// alignment is achieved, "\t{{content}}\n" is added for the output.
//
// If the content of the labeledOutput contains line breaks, the subsequent lines are aligned so that they start at the same location as the first line.
func labeledOutput(content ...labeledContent) string {
longestLabel := 0
for _, v := range content {
if len(v.label) > longestLabel {
longestLabel = len(v.label)
}
}
var output string
for _, v := range content {
output += "\t" + v.label + ":" + strings.Repeat(" ", longestLabel-len(v.label)) + "\t" + indentMessageLines(v.content, longestLabel) + "\n"
}
return output
}
// Implements asserts that an object is implemented by the specified interface.
//
// assert.Implements(t, (*MyInterface)(nil), new(MyObject))
func Implements(t TestingT, interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
interfaceType := reflect.TypeOf(interfaceObject).Elem()
if object == nil {
return Fail(t, fmt.Sprintf("Cannot check if nil implements %v", interfaceType), msgAndArgs...)
}
if !reflect.TypeOf(object).Implements(interfaceType) {
return Fail(t, fmt.Sprintf("%T must implement %v", object, interfaceType), msgAndArgs...)
}
return true
}
// IsType asserts that the specified objects are of the same type.
func IsType(t TestingT, expectedType interface{}, object interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if !ObjectsAreEqual(reflect.TypeOf(object), reflect.TypeOf(expectedType)) {
return Fail(t, fmt.Sprintf("Object expected to be of type %v, but was %v", reflect.TypeOf(expectedType), reflect.TypeOf(object)), msgAndArgs...)
}
return true
}
// Equal asserts that two objects are equal.
//
// assert.Equal(t, 123, 123)
//
// Pointer variable equality is determined based on the equality of the
// referenced values (as opposed to the memory addresses). Function equality
// cannot be determined and will always fail.
func Equal(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if err := validateEqualArgs(expected, actual); err != nil {
return Fail(t, fmt.Sprintf("Invalid operation: %#v == %#v (%s)",
expected, actual, err), msgAndArgs...)
}
if !ObjectsAreEqual(expected, actual) {
diff := diff(expected, actual)
expected, actual = formatUnequalValues(expected, actual)
return Fail(t, fmt.Sprintf("Not equal: \n"+
"expected: %s\n"+
"actual : %s%s", expected, actual, diff), msgAndArgs...)
}
return true
}
// validateEqualArgs checks whether provided arguments can be safely used in the
// Equal/NotEqual functions.
func validateEqualArgs(expected, actual interface{}) error {
if expected == nil && actual == nil {
return nil
}
if isFunction(expected) || isFunction(actual) {
return errors.New("cannot take func type as argument")
}
return nil
}
// Same asserts that two pointers reference the same object.
//
// assert.Same(t, ptr1, ptr2)
//
// Both arguments must be pointer variables. Pointer variable sameness is
// determined based on the equality of both type and value.
func Same(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if !samePointers(expected, actual) {
return Fail(t, fmt.Sprintf("Not same: \n"+
"expected: %p %#v\n"+
"actual : %p %#v", expected, expected, actual, actual), msgAndArgs...)
}
return true
}
// NotSame asserts that two pointers do not reference the same object.
//
// assert.NotSame(t, ptr1, ptr2)
//
// Both arguments must be pointer variables. Pointer variable sameness is
// determined based on the equality of both type and value.
func NotSame(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if samePointers(expected, actual) {
return Fail(t, fmt.Sprintf(
"Expected and actual point to the same object: %p %#v",
expected, expected), msgAndArgs...)
}
return true
}
// samePointers compares two generic interface objects and returns whether
// they point to the same object
func samePointers(first, second interface{}) bool {
firstPtr, secondPtr := reflect.ValueOf(first), reflect.ValueOf(second)
if firstPtr.Kind() != reflect.Ptr || secondPtr.Kind() != reflect.Ptr {
return false
}
firstType, secondType := reflect.TypeOf(first), reflect.TypeOf(second)
if firstType != secondType {
return false
}
// compare pointer addresses
return first == second
}
// formatUnequalValues takes two values of arbitrary types and returns string
// representations appropriate to be presented to the user.
//
// If the values are not of like type, the returned strings will be prefixed
// with the type name, and the value will be enclosed in parenthesis similar
// to a type conversion in the Go grammar.
func formatUnequalValues(expected, actual interface{}) (e string, a string) {
if reflect.TypeOf(expected) != reflect.TypeOf(actual) {
return fmt.Sprintf("%T(%s)", expected, truncatingFormat(expected)),
fmt.Sprintf("%T(%s)", actual, truncatingFormat(actual))
}
switch expected.(type) {
case time.Duration:
return fmt.Sprintf("%v", expected), fmt.Sprintf("%v", actual)
}
return truncatingFormat(expected), truncatingFormat(actual)
}
// truncatingFormat formats the data and truncates it if it's too long.
//
// This helps keep formatted error messages lines from exceeding the
// bufio.MaxScanTokenSize max line length that the go testing framework imposes.
func truncatingFormat(data interface{}) string {
value := fmt.Sprintf("%#v", data)
max := bufio.MaxScanTokenSize - 100 // Give us some space the type info too if needed.
if len(value) > max {
value = value[0:max] + "<... truncated>"
}
return value
}
// EqualValues asserts that two objects are equal or convertable to the same types
// and equal.
//
// assert.EqualValues(t, uint32(123), int32(123))
func EqualValues(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if !ObjectsAreEqualValues(expected, actual) {
diff := diff(expected, actual)
expected, actual = formatUnequalValues(expected, actual)
return Fail(t, fmt.Sprintf("Not equal: \n"+
"expected: %s\n"+
"actual : %s%s", expected, actual, diff), msgAndArgs...)
}
return true
}
// Exactly asserts that two objects are equal in value and type.
//
// assert.Exactly(t, int32(123), int64(123))
func Exactly(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
aType := reflect.TypeOf(expected)
bType := reflect.TypeOf(actual)
if aType != bType {
return Fail(t, fmt.Sprintf("Types expected to match exactly\n\t%v != %v", aType, bType), msgAndArgs...)
}
return Equal(t, expected, actual, msgAndArgs...)
}
// NotNil asserts that the specified object is not nil.
//
// assert.NotNil(t, err)
func NotNil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
if !isNil(object) {
return true
}
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Fail(t, "Expected value not to be nil.", msgAndArgs...)
}
// containsKind checks if a specified kind in the slice of kinds.
func containsKind(kinds []reflect.Kind, kind reflect.Kind) bool {
for i := 0; i < len(kinds); i++ {
if kind == kinds[i] {
return true
}
}
return false
}
// isNil checks if a specified object is nil or not, without Failing.
func isNil(object interface{}) bool {
if object == nil {
return true
}
value := reflect.ValueOf(object)
kind := value.Kind()
isNilableKind := containsKind(
[]reflect.Kind{
reflect.Chan, reflect.Func,
reflect.Interface, reflect.Map,
reflect.Ptr, reflect.Slice},
kind)
if isNilableKind && value.IsNil() {
return true
}
return false
}
// Nil asserts that the specified object is nil.
//
// assert.Nil(t, err)
func Nil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
if isNil(object) {
return true
}
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Fail(t, fmt.Sprintf("Expected nil, but got: %#v", object), msgAndArgs...)
}
// isEmpty gets whether the specified object is considered empty or not.
func isEmpty(object interface{}) bool {
// get nil case out of the way
if object == nil {
return true
}
objValue := reflect.ValueOf(object)
switch objValue.Kind() {
// collection types are empty when they have no element
case reflect.Array, reflect.Chan, reflect.Map, reflect.Slice:
return objValue.Len() == 0
// pointers are empty if nil or if the value they point to is empty
case reflect.Ptr:
if objValue.IsNil() {
return true
}
deref := objValue.Elem().Interface()
return isEmpty(deref)
// for all other types, compare against the zero value
default:
zero := reflect.Zero(objValue.Type())
return reflect.DeepEqual(object, zero.Interface())
}
}
// Empty asserts that the specified object is empty. I.e. nil, "", false, 0 or either
// a slice or a channel with len == 0.
//
// assert.Empty(t, obj)
func Empty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
pass := isEmpty(object)
if !pass {
if h, ok := t.(tHelper); ok {
h.Helper()
}
Fail(t, fmt.Sprintf("Should be empty, but was %v", object), msgAndArgs...)
}
return pass
}
// NotEmpty asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either
// a slice or a channel with len == 0.
//
// if assert.NotEmpty(t, obj) {
// assert.Equal(t, "two", obj[1])
// }
func NotEmpty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
pass := !isEmpty(object)
if !pass {
if h, ok := t.(tHelper); ok {
h.Helper()
}
Fail(t, fmt.Sprintf("Should NOT be empty, but was %v", object), msgAndArgs...)
}
return pass
}
// getLen try to get length of object.
// return (false, 0) if impossible.
func getLen(x interface{}) (ok bool, length int) {
v := reflect.ValueOf(x)
defer func() {
if e := recover(); e != nil {
ok = false
}
}()
return true, v.Len()
}
// Len asserts that the specified object has specific length.
// Len also fails if the object has a type that len() not accept.
//
// assert.Len(t, mySlice, 3)
func Len(t TestingT, object interface{}, length int, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
ok, l := getLen(object)
if !ok {
return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", object), msgAndArgs...)
}
if l != length {
return Fail(t, fmt.Sprintf("\"%s\" should have %d item(s), but has %d", object, length, l), msgAndArgs...)
}
return true
}
// True asserts that the specified value is true.
//
// assert.True(t, myBool)
func True(t TestingT, value bool, msgAndArgs ...interface{}) bool {
if !value {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Fail(t, "Should be true", msgAndArgs...)
}
return true
}
// False asserts that the specified value is false.
//
// assert.False(t, myBool)
func False(t TestingT, value bool, msgAndArgs ...interface{}) bool {
if value {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Fail(t, "Should be false", msgAndArgs...)
}
return true
}
// NotEqual asserts that the specified values are NOT equal.
//
// assert.NotEqual(t, obj1, obj2)
//
// Pointer variable equality is determined based on the equality of the
// referenced values (as opposed to the memory addresses).
func NotEqual(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if err := validateEqualArgs(expected, actual); err != nil {
return Fail(t, fmt.Sprintf("Invalid operation: %#v != %#v (%s)",
expected, actual, err), msgAndArgs...)
}
if ObjectsAreEqual(expected, actual) {
return Fail(t, fmt.Sprintf("Should not be: %#v\n", actual), msgAndArgs...)
}
return true
}
// NotEqualValues asserts that two objects are not equal even when converted to the same type
//
// assert.NotEqualValues(t, obj1, obj2)
func NotEqualValues(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if ObjectsAreEqualValues(expected, actual) {
return Fail(t, fmt.Sprintf("Should not be: %#v\n", actual), msgAndArgs...)
}
return true
}
// containsElement try loop over the list check if the list includes the element.
// return (false, false) if impossible.
// return (true, false) if element was not found.
// return (true, true) if element was found.
func includeElement(list interface{}, element interface{}) (ok, found bool) {
listValue := reflect.ValueOf(list)
listKind := reflect.TypeOf(list).Kind()
defer func() {
if e := recover(); e != nil {
ok = false
found = false
}
}()
if listKind == reflect.String {
elementValue := reflect.ValueOf(element)
return true, strings.Contains(listValue.String(), elementValue.String())
}
if listKind == reflect.Map {
mapKeys := listValue.MapKeys()
for i := 0; i < len(mapKeys); i++ {
if ObjectsAreEqual(mapKeys[i].Interface(), element) {
return true, true
}
}
return true, false
}
for i := 0; i < listValue.Len(); i++ {
if ObjectsAreEqual(listValue.Index(i).Interface(), element) {
return true, true
}
}
return true, false
}
// Contains asserts that the specified string, list(array, slice...) or map contains the
// specified substring or element.
//
// assert.Contains(t, "Hello World", "World")
// assert.Contains(t, ["Hello", "World"], "World")
// assert.Contains(t, {"Hello": "World"}, "Hello")
func Contains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
ok, found := includeElement(s, contains)
if !ok {
return Fail(t, fmt.Sprintf("%#v could not be applied builtin len()", s), msgAndArgs...)
}
if !found {
return Fail(t, fmt.Sprintf("%#v does not contain %#v", s, contains), msgAndArgs...)
}
return true
}
// NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the
// specified substring or element.
//
// assert.NotContains(t, "Hello World", "Earth")
// assert.NotContains(t, ["Hello", "World"], "Earth")
// assert.NotContains(t, {"Hello": "World"}, "Earth")
func NotContains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
ok, found := includeElement(s, contains)
if !ok {
return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", s), msgAndArgs...)
}
if found {
return Fail(t, fmt.Sprintf("\"%s\" should not contain \"%s\"", s, contains), msgAndArgs...)
}
return true
}
// Subset asserts that the specified list(array, slice...) contains all
// elements given in the specified subset(array, slice...).
//
// assert.Subset(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")
func Subset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok bool) {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if subset == nil {
return true // we consider nil to be equal to the nil set
}
subsetValue := reflect.ValueOf(subset)
defer func() {
if e := recover(); e != nil {
ok = false
}
}()
listKind := reflect.TypeOf(list).Kind()
subsetKind := reflect.TypeOf(subset).Kind()
if listKind != reflect.Array && listKind != reflect.Slice {
return Fail(t, fmt.Sprintf("%q has an unsupported type %s", list, listKind), msgAndArgs...)
}
if subsetKind != reflect.Array && subsetKind != reflect.Slice {
return Fail(t, fmt.Sprintf("%q has an unsupported type %s", subset, subsetKind), msgAndArgs...)
}
for i := 0; i < subsetValue.Len(); i++ {
element := subsetValue.Index(i).Interface()
ok, found := includeElement(list, element)
if !ok {
return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", list), msgAndArgs...)
}
if !found {
return Fail(t, fmt.Sprintf("\"%s\" does not contain \"%s\"", list, element), msgAndArgs...)
}
}
return true
}
// NotSubset asserts that the specified list(array, slice...) contains not all
// elements given in the specified subset(array, slice...).
//
// assert.NotSubset(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")
func NotSubset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok bool) {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if subset == nil {
return Fail(t, fmt.Sprintf("nil is the empty set which is a subset of every set"), msgAndArgs...)
}
subsetValue := reflect.ValueOf(subset)
defer func() {
if e := recover(); e != nil {
ok = false
}
}()
listKind := reflect.TypeOf(list).Kind()
subsetKind := reflect.TypeOf(subset).Kind()
if listKind != reflect.Array && listKind != reflect.Slice {
return Fail(t, fmt.Sprintf("%q has an unsupported type %s", list, listKind), msgAndArgs...)
}
if subsetKind != reflect.Array && subsetKind != reflect.Slice {
return Fail(t, fmt.Sprintf("%q has an unsupported type %s", subset, subsetKind), msgAndArgs...)
}
for i := 0; i < subsetValue.Len(); i++ {
element := subsetValue.Index(i).Interface()
ok, found := includeElement(list, element)
if !ok {
return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", list), msgAndArgs...)
}
if !found {
return true
}
}
return Fail(t, fmt.Sprintf("%q is a subset of %q", subset, list), msgAndArgs...)
}
// ElementsMatch asserts that the specified listA(array, slice...) is equal to specified
// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
// the number of appearances of each of them in both lists should match.
//
// assert.ElementsMatch(t, [1, 3, 2, 3], [1, 3, 3, 2])
func ElementsMatch(t TestingT, listA, listB interface{}, msgAndArgs ...interface{}) (ok bool) {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if isEmpty(listA) && isEmpty(listB) {
return true
}
if !isList(t, listA, msgAndArgs...) || !isList(t, listB, msgAndArgs...) {
return false
}
extraA, extraB := diffLists(listA, listB)
if len(extraA) == 0 && len(extraB) == 0 {
return true
}
return Fail(t, formatListDiff(listA, listB, extraA, extraB), msgAndArgs...)
}
// isList checks that the provided value is array or slice.
func isList(t TestingT, list interface{}, msgAndArgs ...interface{}) (ok bool) {
kind := reflect.TypeOf(list).Kind()
if kind != reflect.Array && kind != reflect.Slice {
return Fail(t, fmt.Sprintf("%q has an unsupported type %s, expecting array or slice", list, kind),
msgAndArgs...)
}
return true
}
// diffLists diffs two arrays/slices and returns slices of elements that are only in A and only in B.
// If some element is present multiple times, each instance is counted separately (e.g. if something is 2x in A and
// 5x in B, it will be 0x in extraA and 3x in extraB). The order of items in both lists is ignored.
func diffLists(listA, listB interface{}) (extraA, extraB []interface{}) {
aValue := reflect.ValueOf(listA)
bValue := reflect.ValueOf(listB)
aLen := aValue.Len()
bLen := bValue.Len()
// Mark indexes in bValue that we already used
visited := make([]bool, bLen)
for i := 0; i < aLen; i++ {
element := aValue.Index(i).Interface()
found := false
for j := 0; j < bLen; j++ {
if visited[j] {
continue
}
if ObjectsAreEqual(bValue.Index(j).Interface(), element) {
visited[j] = true
found = true
break
}
}
if !found {
extraA = append(extraA, element)
}
}
for j := 0; j < bLen; j++ {
if visited[j] {
continue
}
extraB = append(extraB, bValue.Index(j).Interface())
}
return
}
func formatListDiff(listA, listB interface{}, extraA, extraB []interface{}) string {
var msg bytes.Buffer
msg.WriteString("elements differ")
if len(extraA) > 0 {
msg.WriteString("\n\nextra elements in list A:\n")
msg.WriteString(spewConfig.Sdump(extraA))
}
if len(extraB) > 0 {
msg.WriteString("\n\nextra elements in list B:\n")
msg.WriteString(spewConfig.Sdump(extraB))
}
msg.WriteString("\n\nlistA:\n")
msg.WriteString(spewConfig.Sdump(listA))
msg.WriteString("\n\nlistB:\n")
msg.WriteString(spewConfig.Sdump(listB))
return msg.String()
}
// Condition uses a Comparison to assert a complex condition.
func Condition(t TestingT, comp Comparison, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
result := comp()
if !result {
Fail(t, "Condition failed!", msgAndArgs...)
}
return result
}
// PanicTestFunc defines a func that should be passed to the assert.Panics and assert.NotPanics
// methods, and represents a simple func that takes no arguments, and returns nothing.
type PanicTestFunc func()
// didPanic returns true if the function passed to it panics. Otherwise, it returns false.
func didPanic(f PanicTestFunc) (bool, interface{}, string) {
didPanic := false
var message interface{}
var stack string
func() {
defer func() {
if message = recover(); message != nil {
didPanic = true
stack = string(debug.Stack())
}
}()
// call the target function
f()
}()
return didPanic, message, stack
}
// Panics asserts that the code inside the specified PanicTestFunc panics.
//
// assert.Panics(t, func(){ GoCrazy() })
func Panics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if funcDidPanic, panicValue, _ := didPanic(f); !funcDidPanic {
return Fail(t, fmt.Sprintf("func %#v should panic\n\tPanic value:\t%#v", f, panicValue), msgAndArgs...)
}
return true
}
// PanicsWithValue asserts that the code inside the specified PanicTestFunc panics, and that
// the recovered panic value equals the expected panic value.
//
// assert.PanicsWithValue(t, "crazy error", func(){ GoCrazy() })
func PanicsWithValue(t TestingT, expected interface{}, f PanicTestFunc, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
funcDidPanic, panicValue, panickedStack := didPanic(f)
if !funcDidPanic {
return Fail(t, fmt.Sprintf("func %#v should panic\n\tPanic value:\t%#v", f, panicValue), msgAndArgs...)
}
if panicValue != expected {
return Fail(t, fmt.Sprintf("func %#v should panic with value:\t%#v\n\tPanic value:\t%#v\n\tPanic stack:\t%s", f, expected, panicValue, panickedStack), msgAndArgs...)
}
return true
}
// PanicsWithError asserts that the code inside the specified PanicTestFunc
// panics, and that the recovered panic value is an error that satisfies the
// EqualError comparison.
//
// assert.PanicsWithError(t, "crazy error", func(){ GoCrazy() })
func PanicsWithError(t TestingT, errString string, f PanicTestFunc, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
funcDidPanic, panicValue, panickedStack := didPanic(f)
if !funcDidPanic {
return Fail(t, fmt.Sprintf("func %#v should panic\n\tPanic value:\t%#v", f, panicValue), msgAndArgs...)
}
panicErr, ok := panicValue.(error)
if !ok || panicErr.Error() != errString {
return Fail(t, fmt.Sprintf("func %#v should panic with error message:\t%#v\n\tPanic value:\t%#v\n\tPanic stack:\t%s", f, errString, panicValue, panickedStack), msgAndArgs...)
}
return true
}
// NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.
//
// assert.NotPanics(t, func(){ RemainCalm() })
func NotPanics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if funcDidPanic, panicValue, panickedStack := didPanic(f); funcDidPanic {
return Fail(t, fmt.Sprintf("func %#v should not panic\n\tPanic value:\t%v\n\tPanic stack:\t%s", f, panicValue, panickedStack), msgAndArgs...)
}
return true
}
// WithinDuration asserts that the two times are within duration delta of each other.
//
// assert.WithinDuration(t, time.Now(), time.Now(), 10*time.Second)
func WithinDuration(t TestingT, expected, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
dt := expected.Sub(actual)
if dt < -delta || dt > delta {
return Fail(t, fmt.Sprintf("Max difference between %v and %v allowed is %v, but difference was %v", expected, actual, delta, dt), msgAndArgs...)
}
return true
}
func toFloat(x interface{}) (float64, bool) {
var xf float64
xok := true
switch xn := x.(type) {
case uint:
xf = float64(xn)
case uint8:
xf = float64(xn)
case uint16:
xf = float64(xn)
case uint32:
xf = float64(xn)
case uint64:
xf = float64(xn)
case int:
xf = float64(xn)
case int8:
xf = float64(xn)
case int16:
xf = float64(xn)
case int32:
xf = float64(xn)
case int64:
xf = float64(xn)
case float32:
xf = float64(xn)
case float64:
xf = xn
case time.Duration:
xf = float64(xn)
default:
xok = false
}
return xf, xok
}
// InDelta asserts that the two numerals are within delta of each other.
//
// assert.InDelta(t, math.Pi, 22/7.0, 0.01)
func InDelta(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
af, aok := toFloat(expected)
bf, bok := toFloat(actual)
if !aok || !bok {
return Fail(t, fmt.Sprintf("Parameters must be numerical"), msgAndArgs...)
}
if math.IsNaN(af) {
return Fail(t, fmt.Sprintf("Expected must not be NaN"), msgAndArgs...)
}
if math.IsNaN(bf) {
return Fail(t, fmt.Sprintf("Expected %v with delta %v, but was NaN", expected, delta), msgAndArgs...)
}
dt := af - bf
if dt < -delta || dt > delta {
return Fail(t, fmt.Sprintf("Max difference between %v and %v allowed is %v, but difference was %v", expected, actual, delta, dt), msgAndArgs...)
}
return true
}
// InDeltaSlice is the same as InDelta, except it compares two slices.
func InDeltaSlice(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if expected == nil || actual == nil ||
reflect.TypeOf(actual).Kind() != reflect.Slice ||
reflect.TypeOf(expected).Kind() != reflect.Slice {
return Fail(t, fmt.Sprintf("Parameters must be slice"), msgAndArgs...)
}
actualSlice := reflect.ValueOf(actual)
expectedSlice := reflect.ValueOf(expected)
for i := 0; i < actualSlice.Len(); i++ {
result := InDelta(t, actualSlice.Index(i).Interface(), expectedSlice.Index(i).Interface(), delta, msgAndArgs...)
if !result {
return result
}
}
return true
}
// InDeltaMapValues is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
func InDeltaMapValues(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if expected == nil || actual == nil ||
reflect.TypeOf(actual).Kind() != reflect.Map ||
reflect.TypeOf(expected).Kind() != reflect.Map {
return Fail(t, "Arguments must be maps", msgAndArgs...)
}
expectedMap := reflect.ValueOf(expected)
actualMap := reflect.ValueOf(actual)
if expectedMap.Len() != actualMap.Len() {
return Fail(t, "Arguments must have the same number of keys", msgAndArgs...)
}
for _, k := range expectedMap.MapKeys() {
ev := expectedMap.MapIndex(k)
av := actualMap.MapIndex(k)
if !ev.IsValid() {
return Fail(t, fmt.Sprintf("missing key %q in expected map", k), msgAndArgs...)
}
if !av.IsValid() {
return Fail(t, fmt.Sprintf("missing key %q in actual map", k), msgAndArgs...)
}
if !InDelta(
t,
ev.Interface(),
av.Interface(),
delta,
msgAndArgs...,
) {
return false
}
}
return true
}
func calcRelativeError(expected, actual interface{}) (float64, error) {
af, aok := toFloat(expected)
if !aok {
return 0, fmt.Errorf("expected value %q cannot be converted to float", expected)
}
if math.IsNaN(af) {
return 0, errors.New("expected value must not be NaN")
}
if af == 0 {
return 0, fmt.Errorf("expected value must have a value other than zero to calculate the relative error")
}
bf, bok := toFloat(actual)
if !bok {
return 0, fmt.Errorf("actual value %q cannot be converted to float", actual)
}
if math.IsNaN(bf) {
return 0, errors.New("actual value must not be NaN")
}
return math.Abs(af-bf) / math.Abs(af), nil
}
// InEpsilon asserts that expected and actual have a relative error less than epsilon
func InEpsilon(t TestingT, expected, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if math.IsNaN(epsilon) {
return Fail(t, "epsilon must not be NaN")
}
actualEpsilon, err := calcRelativeError(expected, actual)
if err != nil {
return Fail(t, err.Error(), msgAndArgs...)
}
if actualEpsilon > epsilon {
return Fail(t, fmt.Sprintf("Relative error is too high: %#v (expected)\n"+
" < %#v (actual)", epsilon, actualEpsilon), msgAndArgs...)
}
return true
}
// InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.
func InEpsilonSlice(t TestingT, expected, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if expected == nil || actual == nil ||
reflect.TypeOf(actual).Kind() != reflect.Slice ||
reflect.TypeOf(expected).Kind() != reflect.Slice {
return Fail(t, fmt.Sprintf("Parameters must be slice"), msgAndArgs...)
}
actualSlice := reflect.ValueOf(actual)
expectedSlice := reflect.ValueOf(expected)
for i := 0; i < actualSlice.Len(); i++ {
result := InEpsilon(t, actualSlice.Index(i).Interface(), expectedSlice.Index(i).Interface(), epsilon)
if !result {
return result
}
}
return true
}
/*
Errors
*/
// NoError asserts that a function returned no error (i.e. `nil`).
//
// actualObj, err := SomeFunction()
// if assert.NoError(t, err) {
// assert.Equal(t, expectedObj, actualObj)
// }
func NoError(t TestingT, err error, msgAndArgs ...interface{}) bool {
if err != nil {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Fail(t, fmt.Sprintf("Received unexpected error:\n%+v", err), msgAndArgs...)
}
return true
}
// Error asserts that a function returned an error (i.e. not `nil`).
//
// actualObj, err := SomeFunction()
// if assert.Error(t, err) {
// assert.Equal(t, expectedError, err)
// }
func Error(t TestingT, err error, msgAndArgs ...interface{}) bool {
if err == nil {
if h, ok := t.(tHelper); ok {
h.Helper()
}
return Fail(t, "An error is expected but got nil.", msgAndArgs...)
}
return true
}
// EqualError asserts that a function returned an error (i.e. not `nil`)
// and that it is equal to the provided error.
//
// actualObj, err := SomeFunction()
// assert.EqualError(t, err, expectedErrorString)
func EqualError(t TestingT, theError error, errString string, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if !Error(t, theError, msgAndArgs...) {
return false
}
expected := errString
actual := theError.Error()
// don't need to use deep equals here, we know they are both strings
if expected != actual {
return Fail(t, fmt.Sprintf("Error message not equal:\n"+
"expected: %q\n"+
"actual : %q", expected, actual), msgAndArgs...)
}
return true
}
// matchRegexp return true if a specified regexp matches a string.
func matchRegexp(rx interface{}, str interface{}) bool {
var r *regexp.Regexp
if rr, ok := rx.(*regexp.Regexp); ok {
r = rr
} else {
r = regexp.MustCompile(fmt.Sprint(rx))
}
return (r.FindStringIndex(fmt.Sprint(str)) != nil)
}
// Regexp asserts that a specified regexp matches a string.
//
// assert.Regexp(t, regexp.MustCompile("start"), "it's starting")
// assert.Regexp(t, "start...$", "it's not starting")
func Regexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
match := matchRegexp(rx, str)
if !match {
Fail(t, fmt.Sprintf("Expect \"%v\" to match \"%v\"", str, rx), msgAndArgs...)
}
return match
}
// NotRegexp asserts that a specified regexp does not match a string.
//
// assert.NotRegexp(t, regexp.MustCompile("starts"), "it's starting")
// assert.NotRegexp(t, "^start", "it's not starting")
func NotRegexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
match := matchRegexp(rx, str)
if match {
Fail(t, fmt.Sprintf("Expect \"%v\" to NOT match \"%v\"", str, rx), msgAndArgs...)
}
return !match
}
// Zero asserts that i is the zero value for its type.
func Zero(t TestingT, i interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if i != nil && !reflect.DeepEqual(i, reflect.Zero(reflect.TypeOf(i)).Interface()) {
return Fail(t, fmt.Sprintf("Should be zero, but was %v", i), msgAndArgs...)
}
return true
}
// NotZero asserts that i is not the zero value for its type.
func NotZero(t TestingT, i interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if i == nil || reflect.DeepEqual(i, reflect.Zero(reflect.TypeOf(i)).Interface()) {
return Fail(t, fmt.Sprintf("Should not be zero, but was %v", i), msgAndArgs...)
}
return true
}
// FileExists checks whether a file exists in the given path. It also fails if
// the path points to a directory or there is an error when trying to check the file.
func FileExists(t TestingT, path string, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
info, err := os.Lstat(path)
if err != nil {
if os.IsNotExist(err) {
return Fail(t, fmt.Sprintf("unable to find file %q", path), msgAndArgs...)
}
return Fail(t, fmt.Sprintf("error when running os.Lstat(%q): %s", path, err), msgAndArgs...)
}
if info.IsDir() {
return Fail(t, fmt.Sprintf("%q is a directory", path), msgAndArgs...)
}
return true
}
// NoFileExists checks whether a file does not exist in a given path. It fails
// if the path points to an existing _file_ only.
func NoFileExists(t TestingT, path string, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
info, err := os.Lstat(path)
if err != nil {
return true
}
if info.IsDir() {
return true
}
return Fail(t, fmt.Sprintf("file %q exists", path), msgAndArgs...)
}
// DirExists checks whether a directory exists in the given path. It also fails
// if the path is a file rather a directory or there is an error checking whether it exists.
func DirExists(t TestingT, path string, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
info, err := os.Lstat(path)
if err != nil {
if os.IsNotExist(err) {
return Fail(t, fmt.Sprintf("unable to find file %q", path), msgAndArgs...)
}
return Fail(t, fmt.Sprintf("error when running os.Lstat(%q): %s", path, err), msgAndArgs...)
}
if !info.IsDir() {
return Fail(t, fmt.Sprintf("%q is a file", path), msgAndArgs...)
}
return true
}
// NoDirExists checks whether a directory does not exist in the given path.
// It fails if the path points to an existing _directory_ only.
func NoDirExists(t TestingT, path string, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
info, err := os.Lstat(path)
if err != nil {
if os.IsNotExist(err) {
return true
}
return true
}
if !info.IsDir() {
return true
}
return Fail(t, fmt.Sprintf("directory %q exists", path), msgAndArgs...)
}
// JSONEq asserts that two JSON strings are equivalent.
//
// assert.JSONEq(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
func JSONEq(t TestingT, expected string, actual string, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
var expectedJSONAsInterface, actualJSONAsInterface interface{}
if err := json.Unmarshal([]byte(expected), &expectedJSONAsInterface); err != nil {
return Fail(t, fmt.Sprintf("Expected value ('%s') is not valid json.\nJSON parsing error: '%s'", expected, err.Error()), msgAndArgs...)
}
if err := json.Unmarshal([]byte(actual), &actualJSONAsInterface); err != nil {
return Fail(t, fmt.Sprintf("Input ('%s') needs to be valid json.\nJSON parsing error: '%s'", actual, err.Error()), msgAndArgs...)
}
return Equal(t, expectedJSONAsInterface, actualJSONAsInterface, msgAndArgs...)
}
// YAMLEq asserts that two YAML strings are equivalent.
func YAMLEq(t TestingT, expected string, actual string, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
var expectedYAMLAsInterface, actualYAMLAsInterface interface{}
if err := yaml.Unmarshal([]byte(expected), &expectedYAMLAsInterface); err != nil {
return Fail(t, fmt.Sprintf("Expected value ('%s') is not valid yaml.\nYAML parsing error: '%s'", expected, err.Error()), msgAndArgs...)
}
if err := yaml.Unmarshal([]byte(actual), &actualYAMLAsInterface); err != nil {
return Fail(t, fmt.Sprintf("Input ('%s') needs to be valid yaml.\nYAML error: '%s'", actual, err.Error()), msgAndArgs...)
}
return Equal(t, expectedYAMLAsInterface, actualYAMLAsInterface, msgAndArgs...)
}
func typeAndKind(v interface{}) (reflect.Type, reflect.Kind) {
t := reflect.TypeOf(v)
k := t.Kind()
if k == reflect.Ptr {
t = t.Elem()
k = t.Kind()
}
return t, k
}
// diff returns a diff of both values as long as both are of the same type and
// are a struct, map, slice, array or string. Otherwise it returns an empty string.
func diff(expected interface{}, actual interface{}) string {
if expected == nil || actual == nil {
return ""
}
et, ek := typeAndKind(expected)
at, _ := typeAndKind(actual)
if et != at {
return ""
}
if ek != reflect.Struct && ek != reflect.Map && ek != reflect.Slice && ek != reflect.Array && ek != reflect.String {
return ""
}
var e, a string
if et != reflect.TypeOf("") {
e = spewConfig.Sdump(expected)
a = spewConfig.Sdump(actual)
} else {
e = reflect.ValueOf(expected).String()
a = reflect.ValueOf(actual).String()
}
diff, _ := difflib.GetUnifiedDiffString(difflib.UnifiedDiff{
A: difflib.SplitLines(e),
B: difflib.SplitLines(a),
FromFile: "Expected",
FromDate: "",
ToFile: "Actual",
ToDate: "",
Context: 1,
})
return "\n\nDiff:\n" + diff
}
func isFunction(arg interface{}) bool {
if arg == nil {
return false
}
return reflect.TypeOf(arg).Kind() == reflect.Func
}
var spewConfig = spew.ConfigState{
Indent: " ",
DisablePointerAddresses: true,
DisableCapacities: true,
SortKeys: true,
DisableMethods: true,
MaxDepth: 10,
}
type tHelper interface {
Helper()
}
// Eventually asserts that given condition will be met in waitFor time,
// periodically checking target function each tick.
//
// assert.Eventually(t, func() bool { return true; }, time.Second, 10*time.Millisecond)
func Eventually(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
ch := make(chan bool, 1)
timer := time.NewTimer(waitFor)
defer timer.Stop()
ticker := time.NewTicker(tick)
defer ticker.Stop()
for tick := ticker.C; ; {
select {
case <-timer.C:
return Fail(t, "Condition never satisfied", msgAndArgs...)
case <-tick:
tick = nil
go func() { ch <- condition() }()
case v := <-ch:
if v {
return true
}
tick = ticker.C
}
}
}
// Never asserts that the given condition doesn't satisfy in waitFor time,
// periodically checking the target function each tick.
//
// assert.Never(t, func() bool { return false; }, time.Second, 10*time.Millisecond)
func Never(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
ch := make(chan bool, 1)
timer := time.NewTimer(waitFor)
defer timer.Stop()
ticker := time.NewTicker(tick)
defer ticker.Stop()
for tick := ticker.C; ; {
select {
case <-timer.C:
return true
case <-tick:
tick = nil
go func() { ch <- condition() }()
case v := <-ch:
if v {
return Fail(t, "Condition satisfied", msgAndArgs...)
}
tick = ticker.C
}
}
}
// ErrorIs asserts that at least one of the errors in err's chain matches target.
// This is a wrapper for errors.Is.
func ErrorIs(t TestingT, err, target error, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if errors.Is(err, target) {
return true
}
var expectedText string
if target != nil {
expectedText = target.Error()
}
chain := buildErrorChainString(err)
return Fail(t, fmt.Sprintf("Target error should be in err chain:\n"+
"expected: %q\n"+
"in chain: %s", expectedText, chain,
), msgAndArgs...)
}
// NotErrorIs asserts that at none of the errors in err's chain matches target.
// This is a wrapper for errors.Is.
func NotErrorIs(t TestingT, err, target error, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if !errors.Is(err, target) {
return true
}
var expectedText string
if target != nil {
expectedText = target.Error()
}
chain := buildErrorChainString(err)
return Fail(t, fmt.Sprintf("Target error should not be in err chain:\n"+
"found: %q\n"+
"in chain: %s", expectedText, chain,
), msgAndArgs...)
}
// ErrorAs asserts that at least one of the errors in err's chain matches target, and if so, sets target to that error value.
// This is a wrapper for errors.As.
func ErrorAs(t TestingT, err error, target interface{}, msgAndArgs ...interface{}) bool {
if h, ok := t.(tHelper); ok {
h.Helper()
}
if errors.As(err, target) {
return true
}
chain := buildErrorChainString(err)
return Fail(t, fmt.Sprintf("Should be in error chain:\n"+
"expected: %q\n"+
"in chain: %s", target, chain,
), msgAndArgs...)
}
func buildErrorChainString(err error) string {
if err == nil {
return ""
}
e := errors.Unwrap(err)
chain := fmt.Sprintf("%q", err.Error())
for e != nil {
chain += fmt.Sprintf("\n\t%q", e.Error())
e = errors.Unwrap(e)
}
return chain
}