summaryrefslogtreecommitdiff
path: root/include/kunit/test.h
blob: 20cc4770cb3f46766aab9b424329e1d68edab934 (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
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
/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Base unit test (KUnit) API.
 *
 * Copyright (C) 2019, Google LLC.
 * Author: Brendan Higgins <brendanhiggins@google.com>
 */

#ifndef _KUNIT_TEST_H
#define _KUNIT_TEST_H

#include <kunit/assert.h>
#include <kunit/try-catch.h>

#include <linux/compiler.h>
#include <linux/container_of.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kconfig.h>
#include <linux/kref.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/types.h>

#include <asm/rwonce.h>

struct kunit;

/* Size of log associated with test. */
#define KUNIT_LOG_SIZE	512

/* Maximum size of parameter description string. */
#define KUNIT_PARAM_DESC_SIZE 128

/* Maximum size of a status comment. */
#define KUNIT_STATUS_COMMENT_SIZE 256

/*
 * TAP specifies subtest stream indentation of 4 spaces, 8 spaces for a
 * sub-subtest.  See the "Subtests" section in
 * https://node-tap.org/tap-protocol/
 */
#define KUNIT_SUBTEST_INDENT		"    "
#define KUNIT_SUBSUBTEST_INDENT		"        "

/**
 * enum kunit_status - Type of result for a test or test suite
 * @KUNIT_SUCCESS: Denotes the test suite has not failed nor been skipped
 * @KUNIT_FAILURE: Denotes the test has failed.
 * @KUNIT_SKIPPED: Denotes the test has been skipped.
 */
enum kunit_status {
	KUNIT_SUCCESS,
	KUNIT_FAILURE,
	KUNIT_SKIPPED,
};

/**
 * struct kunit_case - represents an individual test case.
 *
 * @run_case: the function representing the actual test case.
 * @name:     the name of the test case.
 * @generate_params: the generator function for parameterized tests.
 *
 * A test case is a function with the signature,
 * ``void (*)(struct kunit *)``
 * that makes expectations and assertions (see KUNIT_EXPECT_TRUE() and
 * KUNIT_ASSERT_TRUE()) about code under test. Each test case is associated
 * with a &struct kunit_suite and will be run after the suite's init
 * function and followed by the suite's exit function.
 *
 * A test case should be static and should only be created with the
 * KUNIT_CASE() macro; additionally, every array of test cases should be
 * terminated with an empty test case.
 *
 * Example:
 *
 * .. code-block:: c
 *
 *	void add_test_basic(struct kunit *test)
 *	{
 *		KUNIT_EXPECT_EQ(test, 1, add(1, 0));
 *		KUNIT_EXPECT_EQ(test, 2, add(1, 1));
 *		KUNIT_EXPECT_EQ(test, 0, add(-1, 1));
 *		KUNIT_EXPECT_EQ(test, INT_MAX, add(0, INT_MAX));
 *		KUNIT_EXPECT_EQ(test, -1, add(INT_MAX, INT_MIN));
 *	}
 *
 *	static struct kunit_case example_test_cases[] = {
 *		KUNIT_CASE(add_test_basic),
 *		{}
 *	};
 *
 */
struct kunit_case {
	void (*run_case)(struct kunit *test);
	const char *name;
	const void* (*generate_params)(const void *prev, char *desc);

	/* private: internal use only. */
	enum kunit_status status;
	char *log;
};

static inline char *kunit_status_to_ok_not_ok(enum kunit_status status)
{
	switch (status) {
	case KUNIT_SKIPPED:
	case KUNIT_SUCCESS:
		return "ok";
	case KUNIT_FAILURE:
		return "not ok";
	}
	return "invalid";
}

/**
 * KUNIT_CASE - A helper for creating a &struct kunit_case
 *
 * @test_name: a reference to a test case function.
 *
 * Takes a symbol for a function representing a test case and creates a
 * &struct kunit_case object from it. See the documentation for
 * &struct kunit_case for an example on how to use it.
 */
#define KUNIT_CASE(test_name) { .run_case = test_name, .name = #test_name }

/**
 * KUNIT_CASE_PARAM - A helper for creation a parameterized &struct kunit_case
 *
 * @test_name: a reference to a test case function.
 * @gen_params: a reference to a parameter generator function.
 *
 * The generator function::
 *
 *	const void* gen_params(const void *prev, char *desc)
 *
 * is used to lazily generate a series of arbitrarily typed values that fit into
 * a void*. The argument @prev is the previously returned value, which should be
 * used to derive the next value; @prev is set to NULL on the initial generator
 * call. When no more values are available, the generator must return NULL.
 * Optionally write a string into @desc (size of KUNIT_PARAM_DESC_SIZE)
 * describing the parameter.
 */
#define KUNIT_CASE_PARAM(test_name, gen_params)			\
		{ .run_case = test_name, .name = #test_name,	\
		  .generate_params = gen_params }

/**
 * struct kunit_suite - describes a related collection of &struct kunit_case
 *
 * @name:	the name of the test. Purely informational.
 * @suite_init:	called once per test suite before the test cases.
 * @suite_exit:	called once per test suite after all test cases.
 * @init:	called before every test case.
 * @exit:	called after every test case.
 * @test_cases:	a null terminated array of test cases.
 *
 * A kunit_suite is a collection of related &struct kunit_case s, such that
 * @init is called before every test case and @exit is called after every
 * test case, similar to the notion of a *test fixture* or a *test class*
 * in other unit testing frameworks like JUnit or Googletest.
 *
 * Every &struct kunit_case must be associated with a kunit_suite for KUnit
 * to run it.
 */
struct kunit_suite {
	const char name[256];
	int (*suite_init)(struct kunit_suite *suite);
	void (*suite_exit)(struct kunit_suite *suite);
	int (*init)(struct kunit *test);
	void (*exit)(struct kunit *test);
	struct kunit_case *test_cases;

	/* private: internal use only */
	char status_comment[KUNIT_STATUS_COMMENT_SIZE];
	struct dentry *debugfs;
	char *log;
	int suite_init_err;
};

/**
 * struct kunit - represents a running instance of a test.
 *
 * @priv: for user to store arbitrary data. Commonly used to pass data
 *	  created in the init function (see &struct kunit_suite).
 *
 * Used to store information about the current context under which the test
 * is running. Most of this data is private and should only be accessed
 * indirectly via public functions; the one exception is @priv which can be
 * used by the test writer to store arbitrary data.
 */
struct kunit {
	void *priv;

	/* private: internal use only. */
	const char *name; /* Read only after initialization! */
	char *log; /* Points at case log after initialization */
	struct kunit_try_catch try_catch;
	/* param_value is the current parameter value for a test case. */
	const void *param_value;
	/* param_index stores the index of the parameter in parameterized tests. */
	int param_index;
	/*
	 * success starts as true, and may only be set to false during a
	 * test case; thus, it is safe to update this across multiple
	 * threads using WRITE_ONCE; however, as a consequence, it may only
	 * be read after the test case finishes once all threads associated
	 * with the test case have terminated.
	 */
	spinlock_t lock; /* Guards all mutable test state. */
	enum kunit_status status; /* Read only after test_case finishes! */
	/*
	 * Because resources is a list that may be updated multiple times (with
	 * new resources) from any thread associated with a test case, we must
	 * protect it with some type of lock.
	 */
	struct list_head resources; /* Protected by lock. */

	char status_comment[KUNIT_STATUS_COMMENT_SIZE];
};

static inline void kunit_set_failure(struct kunit *test)
{
	WRITE_ONCE(test->status, KUNIT_FAILURE);
}

bool kunit_enabled(void);

void kunit_init_test(struct kunit *test, const char *name, char *log);

int kunit_run_tests(struct kunit_suite *suite);

size_t kunit_suite_num_test_cases(struct kunit_suite *suite);

unsigned int kunit_test_case_num(struct kunit_suite *suite,
				 struct kunit_case *test_case);

int __kunit_test_suites_init(struct kunit_suite * const * const suites, int num_suites);

void __kunit_test_suites_exit(struct kunit_suite **suites, int num_suites);

#if IS_BUILTIN(CONFIG_KUNIT)
int kunit_run_all_tests(void);
#else
static inline int kunit_run_all_tests(void)
{
	return 0;
}
#endif /* IS_BUILTIN(CONFIG_KUNIT) */

#define __kunit_test_suites(unique_array, ...)				       \
	static struct kunit_suite *unique_array[]			       \
	__aligned(sizeof(struct kunit_suite *))				       \
	__used __section(".kunit_test_suites") = { __VA_ARGS__ }

/**
 * kunit_test_suites() - used to register one or more &struct kunit_suite
 *			 with KUnit.
 *
 * @__suites: a statically allocated list of &struct kunit_suite.
 *
 * Registers @suites with the test framework.
 * This is done by placing the array of struct kunit_suite * in the
 * .kunit_test_suites ELF section.
 *
 * When builtin, KUnit tests are all run via the executor at boot, and when
 * built as a module, they run on module load.
 *
 */
#define kunit_test_suites(__suites...)						\
	__kunit_test_suites(__UNIQUE_ID(array),				\
			    ##__suites)

#define kunit_test_suite(suite)	kunit_test_suites(&suite)

/**
 * kunit_test_init_section_suites() - used to register one or more &struct
 *				      kunit_suite containing init functions or
 *				      init data.
 *
 * @__suites: a statically allocated list of &struct kunit_suite.
 *
 * This functions identically as kunit_test_suites() except that it suppresses
 * modpost warnings for referencing functions marked __init or data marked
 * __initdata; this is OK because currently KUnit only runs tests upon boot
 * during the init phase or upon loading a module during the init phase.
 *
 * NOTE TO KUNIT DEVS: If we ever allow KUnit tests to be run after boot, these
 * tests must be excluded.
 *
 * The only thing this macro does that's different from kunit_test_suites is
 * that it suffixes the array and suite declarations it makes with _probe;
 * modpost suppresses warnings about referencing init data for symbols named in
 * this manner.
 */
#define kunit_test_init_section_suites(__suites...)			\
	__kunit_test_suites(CONCATENATE(__UNIQUE_ID(array), _probe),	\
			    CONCATENATE(__UNIQUE_ID(suites), _probe),	\
			    ##__suites)

#define kunit_test_init_section_suite(suite)	\
	kunit_test_init_section_suites(&suite)

#define kunit_suite_for_each_test_case(suite, test_case)		\
	for (test_case = suite->test_cases; test_case->run_case; test_case++)

enum kunit_status kunit_suite_has_succeeded(struct kunit_suite *suite);

/**
 * kunit_kmalloc_array() - Like kmalloc_array() except the allocation is *test managed*.
 * @test: The test context object.
 * @n: number of elements.
 * @size: The size in bytes of the desired memory.
 * @gfp: flags passed to underlying kmalloc().
 *
 * Just like `kmalloc_array(...)`, except the allocation is managed by the test case
 * and is automatically cleaned up after the test case concludes. See &struct
 * kunit_resource for more information.
 */
void *kunit_kmalloc_array(struct kunit *test, size_t n, size_t size, gfp_t gfp);

/**
 * kunit_kmalloc() - Like kmalloc() except the allocation is *test managed*.
 * @test: The test context object.
 * @size: The size in bytes of the desired memory.
 * @gfp: flags passed to underlying kmalloc().
 *
 * See kmalloc() and kunit_kmalloc_array() for more information.
 */
static inline void *kunit_kmalloc(struct kunit *test, size_t size, gfp_t gfp)
{
	return kunit_kmalloc_array(test, 1, size, gfp);
}

/**
 * kunit_kfree() - Like kfree except for allocations managed by KUnit.
 * @test: The test case to which the resource belongs.
 * @ptr: The memory allocation to free.
 */
void kunit_kfree(struct kunit *test, const void *ptr);

/**
 * kunit_kzalloc() - Just like kunit_kmalloc(), but zeroes the allocation.
 * @test: The test context object.
 * @size: The size in bytes of the desired memory.
 * @gfp: flags passed to underlying kmalloc().
 *
 * See kzalloc() and kunit_kmalloc_array() for more information.
 */
static inline void *kunit_kzalloc(struct kunit *test, size_t size, gfp_t gfp)
{
	return kunit_kmalloc(test, size, gfp | __GFP_ZERO);
}

/**
 * kunit_kcalloc() - Just like kunit_kmalloc_array(), but zeroes the allocation.
 * @test: The test context object.
 * @n: number of elements.
 * @size: The size in bytes of the desired memory.
 * @gfp: flags passed to underlying kmalloc().
 *
 * See kcalloc() and kunit_kmalloc_array() for more information.
 */
static inline void *kunit_kcalloc(struct kunit *test, size_t n, size_t size, gfp_t gfp)
{
	return kunit_kmalloc_array(test, n, size, gfp | __GFP_ZERO);
}

void kunit_cleanup(struct kunit *test);

void __printf(2, 3) kunit_log_append(char *log, const char *fmt, ...);

/**
 * kunit_mark_skipped() - Marks @test_or_suite as skipped
 *
 * @test_or_suite: The test context object.
 * @fmt:  A printk() style format string.
 *
 * Marks the test as skipped. @fmt is given output as the test status
 * comment, typically the reason the test was skipped.
 *
 * Test execution continues after kunit_mark_skipped() is called.
 */
#define kunit_mark_skipped(test_or_suite, fmt, ...)			\
	do {								\
		WRITE_ONCE((test_or_suite)->status, KUNIT_SKIPPED);	\
		scnprintf((test_or_suite)->status_comment,		\
			  KUNIT_STATUS_COMMENT_SIZE,			\
			  fmt, ##__VA_ARGS__);				\
	} while (0)

/**
 * kunit_skip() - Marks @test_or_suite as skipped
 *
 * @test_or_suite: The test context object.
 * @fmt:  A printk() style format string.
 *
 * Skips the test. @fmt is given output as the test status
 * comment, typically the reason the test was skipped.
 *
 * Test execution is halted after kunit_skip() is called.
 */
#define kunit_skip(test_or_suite, fmt, ...)				\
	do {								\
		kunit_mark_skipped((test_or_suite), fmt, ##__VA_ARGS__);\
		kunit_try_catch_throw(&((test_or_suite)->try_catch));	\
	} while (0)

/*
 * printk and log to per-test or per-suite log buffer.  Logging only done
 * if CONFIG_KUNIT_DEBUGFS is 'y'; if it is 'n', no log is allocated/used.
 */
#define kunit_log(lvl, test_or_suite, fmt, ...)				\
	do {								\
		printk(lvl fmt, ##__VA_ARGS__);				\
		kunit_log_append((test_or_suite)->log,	fmt "\n",	\
				 ##__VA_ARGS__);			\
	} while (0)

#define kunit_printk(lvl, test, fmt, ...)				\
	kunit_log(lvl, test, KUNIT_SUBTEST_INDENT "# %s: " fmt,		\
		  (test)->name,	##__VA_ARGS__)

/**
 * kunit_info() - Prints an INFO level message associated with @test.
 *
 * @test: The test context object.
 * @fmt:  A printk() style format string.
 *
 * Prints an info level message associated with the test suite being run.
 * Takes a variable number of format parameters just like printk().
 */
#define kunit_info(test, fmt, ...) \
	kunit_printk(KERN_INFO, test, fmt, ##__VA_ARGS__)

/**
 * kunit_warn() - Prints a WARN level message associated with @test.
 *
 * @test: The test context object.
 * @fmt:  A printk() style format string.
 *
 * Prints a warning level message.
 */
#define kunit_warn(test, fmt, ...) \
	kunit_printk(KERN_WARNING, test, fmt, ##__VA_ARGS__)

/**
 * kunit_err() - Prints an ERROR level message associated with @test.
 *
 * @test: The test context object.
 * @fmt:  A printk() style format string.
 *
 * Prints an error level message.
 */
#define kunit_err(test, fmt, ...) \
	kunit_printk(KERN_ERR, test, fmt, ##__VA_ARGS__)

/**
 * KUNIT_SUCCEED() - A no-op expectation. Only exists for code clarity.
 * @test: The test context object.
 *
 * The opposite of KUNIT_FAIL(), it is an expectation that cannot fail. In other
 * words, it does nothing and only exists for code clarity. See
 * KUNIT_EXPECT_TRUE() for more information.
 */
#define KUNIT_SUCCEED(test) do {} while (0)

void kunit_do_failed_assertion(struct kunit *test,
			       const struct kunit_loc *loc,
			       enum kunit_assert_type type,
			       const struct kunit_assert *assert,
			       const char *fmt, ...);

#define KUNIT_ASSERTION(test, assert_type, pass, assert_class, INITIALIZER, fmt, ...) do { \
	if (unlikely(!(pass))) {					       \
		static const struct kunit_loc __loc = KUNIT_CURRENT_LOC;       \
		struct assert_class __assertion = INITIALIZER;		       \
		kunit_do_failed_assertion(test,				       \
					  &__loc,			       \
					  assert_type,			       \
					  &__assertion.assert,		       \
					  fmt,				       \
					  ##__VA_ARGS__);		       \
	}								       \
} while (0)


#define KUNIT_FAIL_ASSERTION(test, assert_type, fmt, ...)		       \
	KUNIT_ASSERTION(test,						       \
			assert_type,					       \
			false,						       \
			kunit_fail_assert,				       \
			KUNIT_INIT_FAIL_ASSERT_STRUCT,			       \
			fmt,						       \
			##__VA_ARGS__)

/**
 * KUNIT_FAIL() - Always causes a test to fail when evaluated.
 * @test: The test context object.
 * @fmt: an informational message to be printed when the assertion is made.
 * @...: string format arguments.
 *
 * The opposite of KUNIT_SUCCEED(), it is an expectation that always fails. In
 * other words, it always results in a failed expectation, and consequently
 * always causes the test case to fail when evaluated. See KUNIT_EXPECT_TRUE()
 * for more information.
 */
#define KUNIT_FAIL(test, fmt, ...)					       \
	KUNIT_FAIL_ASSERTION(test,					       \
			     KUNIT_EXPECTATION,				       \
			     fmt,					       \
			     ##__VA_ARGS__)

#define KUNIT_UNARY_ASSERTION(test,					       \
			      assert_type,				       \
			      condition,				       \
			      expected_true,				       \
			      fmt,					       \
			      ...)					       \
	KUNIT_ASSERTION(test,						       \
			assert_type,					       \
			!!(condition) == !!expected_true,		       \
			kunit_unary_assert,				       \
			KUNIT_INIT_UNARY_ASSERT_STRUCT(#condition,	       \
						       expected_true),	       \
			fmt,						       \
			##__VA_ARGS__)

#define KUNIT_TRUE_MSG_ASSERTION(test, assert_type, condition, fmt, ...)       \
	KUNIT_UNARY_ASSERTION(test,					       \
			      assert_type,				       \
			      condition,				       \
			      true,					       \
			      fmt,					       \
			      ##__VA_ARGS__)

#define KUNIT_FALSE_MSG_ASSERTION(test, assert_type, condition, fmt, ...)      \
	KUNIT_UNARY_ASSERTION(test,					       \
			      assert_type,				       \
			      condition,				       \
			      false,					       \
			      fmt,					       \
			      ##__VA_ARGS__)

/*
 * A factory macro for defining the assertions and expectations for the basic
 * comparisons defined for the built in types.
 *
 * Unfortunately, there is no common type that all types can be promoted to for
 * which all the binary operators behave the same way as for the actual types
 * (for example, there is no type that long long and unsigned long long can
 * both be cast to where the comparison result is preserved for all values). So
 * the best we can do is do the comparison in the original types and then coerce
 * everything to long long for printing; this way, the comparison behaves
 * correctly and the printed out value usually makes sense without
 * interpretation, but can always be interpreted to figure out the actual
 * value.
 */
#define KUNIT_BASE_BINARY_ASSERTION(test,				       \
				    assert_class,			       \
				    format_func,			       \
				    assert_type,			       \
				    left,				       \
				    op,					       \
				    right,				       \
				    fmt,				       \
				    ...)				       \
do {									       \
	const typeof(left) __left = (left);				       \
	const typeof(right) __right = (right);				       \
	static const struct kunit_binary_assert_text __text = {		       \
		.operation = #op,					       \
		.left_text = #left,					       \
		.right_text = #right,					       \
	};								       \
									       \
	KUNIT_ASSERTION(test,						       \
			assert_type,					       \
			__left op __right,				       \
			assert_class,					       \
			KUNIT_INIT_BINARY_ASSERT_STRUCT(format_func,	       \
							&__text,	       \
							__left,		       \
							__right),	       \
			fmt,						       \
			##__VA_ARGS__);					       \
} while (0)

#define KUNIT_BINARY_INT_ASSERTION(test,				       \
				   assert_type,				       \
				   left,				       \
				   op,					       \
				   right,				       \
				   fmt,					       \
				    ...)				       \
	KUNIT_BASE_BINARY_ASSERTION(test,				       \
				    kunit_binary_assert,		       \
				    kunit_binary_assert_format,		       \
				    assert_type,			       \
				    left, op, right,			       \
				    fmt,				       \
				    ##__VA_ARGS__)

#define KUNIT_BINARY_PTR_ASSERTION(test,				       \
				   assert_type,				       \
				   left,				       \
				   op,					       \
				   right,				       \
				   fmt,					       \
				    ...)				       \
	KUNIT_BASE_BINARY_ASSERTION(test,				       \
				    kunit_binary_ptr_assert,		       \
				    kunit_binary_ptr_assert_format,	       \
				    assert_type,			       \
				    left, op, right,			       \
				    fmt,				       \
				    ##__VA_ARGS__)

#define KUNIT_BINARY_STR_ASSERTION(test,				       \
				   assert_type,				       \
				   left,				       \
				   op,					       \
				   right,				       \
				   fmt,					       \
				   ...)					       \
do {									       \
	const char *__left = (left);					       \
	const char *__right = (right);					       \
	static const struct kunit_binary_assert_text __text = {		       \
		.operation = #op,					       \
		.left_text = #left,					       \
		.right_text = #right,					       \
	};								       \
									       \
	KUNIT_ASSERTION(test,						       \
			assert_type,					       \
			strcmp(__left, __right) op 0,			       \
			kunit_binary_str_assert,			       \
			KUNIT_INIT_BINARY_ASSERT_STRUCT(kunit_binary_str_assert_format,\
							&__text,	       \
							__left,		       \
							__right),	       \
			fmt,						       \
			##__VA_ARGS__);					       \
} while (0)

#define KUNIT_PTR_NOT_ERR_OR_NULL_MSG_ASSERTION(test,			       \
						assert_type,		       \
						ptr,			       \
						fmt,			       \
						...)			       \
do {									       \
	const typeof(ptr) __ptr = (ptr);				       \
									       \
	KUNIT_ASSERTION(test,						       \
			assert_type,					       \
			!IS_ERR_OR_NULL(__ptr),				       \
			kunit_ptr_not_err_assert,			       \
			KUNIT_INIT_PTR_NOT_ERR_STRUCT(#ptr,		       \
						      __ptr),		       \
			fmt,						       \
			##__VA_ARGS__);					       \
} while (0)

/**
 * KUNIT_EXPECT_TRUE() - Causes a test failure when the expression is not true.
 * @test: The test context object.
 * @condition: an arbitrary boolean expression. The test fails when this does
 * not evaluate to true.
 *
 * This and expectations of the form `KUNIT_EXPECT_*` will cause the test case
 * to fail when the specified condition is not met; however, it will not prevent
 * the test case from continuing to run; this is otherwise known as an
 * *expectation failure*.
 */
#define KUNIT_EXPECT_TRUE(test, condition) \
	KUNIT_EXPECT_TRUE_MSG(test, condition, NULL)

#define KUNIT_EXPECT_TRUE_MSG(test, condition, fmt, ...)		       \
	KUNIT_TRUE_MSG_ASSERTION(test,					       \
				 KUNIT_EXPECTATION,			       \
				 condition,				       \
				 fmt,					       \
				 ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_FALSE() - Makes a test failure when the expression is not false.
 * @test: The test context object.
 * @condition: an arbitrary boolean expression. The test fails when this does
 * not evaluate to false.
 *
 * Sets an expectation that @condition evaluates to false. See
 * KUNIT_EXPECT_TRUE() for more information.
 */
#define KUNIT_EXPECT_FALSE(test, condition) \
	KUNIT_EXPECT_FALSE_MSG(test, condition, NULL)

#define KUNIT_EXPECT_FALSE_MSG(test, condition, fmt, ...)		       \
	KUNIT_FALSE_MSG_ASSERTION(test,					       \
				  KUNIT_EXPECTATION,			       \
				  condition,				       \
				  fmt,					       \
				  ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_EQ() - Sets an expectation that @left and @right are equal.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a primitive C type.
 * @right: an arbitrary expression that evaluates to a primitive C type.
 *
 * Sets an expectation that the values that @left and @right evaluate to are
 * equal. This is semantically equivalent to
 * KUNIT_EXPECT_TRUE(@test, (@left) == (@right)). See KUNIT_EXPECT_TRUE() for
 * more information.
 */
#define KUNIT_EXPECT_EQ(test, left, right) \
	KUNIT_EXPECT_EQ_MSG(test, left, right, NULL)

#define KUNIT_EXPECT_EQ_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_INT_ASSERTION(test,				       \
				   KUNIT_EXPECTATION,			       \
				   left, ==, right,			       \
				   fmt,					       \
				    ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_PTR_EQ() - Expects that pointers @left and @right are equal.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a pointer.
 * @right: an arbitrary expression that evaluates to a pointer.
 *
 * Sets an expectation that the values that @left and @right evaluate to are
 * equal. This is semantically equivalent to
 * KUNIT_EXPECT_TRUE(@test, (@left) == (@right)). See KUNIT_EXPECT_TRUE() for
 * more information.
 */
#define KUNIT_EXPECT_PTR_EQ(test, left, right)				       \
	KUNIT_EXPECT_PTR_EQ_MSG(test, left, right, NULL)

#define KUNIT_EXPECT_PTR_EQ_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_PTR_ASSERTION(test,				       \
				   KUNIT_EXPECTATION,			       \
				   left, ==, right,			       \
				   fmt,					       \
				   ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_NE() - An expectation that @left and @right are not equal.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a primitive C type.
 * @right: an arbitrary expression that evaluates to a primitive C type.
 *
 * Sets an expectation that the values that @left and @right evaluate to are not
 * equal. This is semantically equivalent to
 * KUNIT_EXPECT_TRUE(@test, (@left) != (@right)). See KUNIT_EXPECT_TRUE() for
 * more information.
 */
#define KUNIT_EXPECT_NE(test, left, right) \
	KUNIT_EXPECT_NE_MSG(test, left, right, NULL)

#define KUNIT_EXPECT_NE_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_INT_ASSERTION(test,				       \
				   KUNIT_EXPECTATION,			       \
				   left, !=, right,			       \
				   fmt,					       \
				    ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_PTR_NE() - Expects that pointers @left and @right are not equal.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a pointer.
 * @right: an arbitrary expression that evaluates to a pointer.
 *
 * Sets an expectation that the values that @left and @right evaluate to are not
 * equal. This is semantically equivalent to
 * KUNIT_EXPECT_TRUE(@test, (@left) != (@right)). See KUNIT_EXPECT_TRUE() for
 * more information.
 */
#define KUNIT_EXPECT_PTR_NE(test, left, right)				       \
	KUNIT_EXPECT_PTR_NE_MSG(test, left, right, NULL)

#define KUNIT_EXPECT_PTR_NE_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_PTR_ASSERTION(test,				       \
				   KUNIT_EXPECTATION,			       \
				   left, !=, right,			       \
				   fmt,					       \
				   ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_LT() - An expectation that @left is less than @right.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a primitive C type.
 * @right: an arbitrary expression that evaluates to a primitive C type.
 *
 * Sets an expectation that the value that @left evaluates to is less than the
 * value that @right evaluates to. This is semantically equivalent to
 * KUNIT_EXPECT_TRUE(@test, (@left) < (@right)). See KUNIT_EXPECT_TRUE() for
 * more information.
 */
#define KUNIT_EXPECT_LT(test, left, right) \
	KUNIT_EXPECT_LT_MSG(test, left, right, NULL)

#define KUNIT_EXPECT_LT_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_INT_ASSERTION(test,				       \
				   KUNIT_EXPECTATION,			       \
				   left, <, right,			       \
				   fmt,					       \
				    ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_LE() - Expects that @left is less than or equal to @right.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a primitive C type.
 * @right: an arbitrary expression that evaluates to a primitive C type.
 *
 * Sets an expectation that the value that @left evaluates to is less than or
 * equal to the value that @right evaluates to. Semantically this is equivalent
 * to KUNIT_EXPECT_TRUE(@test, (@left) <= (@right)). See KUNIT_EXPECT_TRUE() for
 * more information.
 */
#define KUNIT_EXPECT_LE(test, left, right) \
	KUNIT_EXPECT_LE_MSG(test, left, right, NULL)

#define KUNIT_EXPECT_LE_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_INT_ASSERTION(test,				       \
				   KUNIT_EXPECTATION,			       \
				   left, <=, right,			       \
				   fmt,					       \
				    ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_GT() - An expectation that @left is greater than @right.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a primitive C type.
 * @right: an arbitrary expression that evaluates to a primitive C type.
 *
 * Sets an expectation that the value that @left evaluates to is greater than
 * the value that @right evaluates to. This is semantically equivalent to
 * KUNIT_EXPECT_TRUE(@test, (@left) > (@right)). See KUNIT_EXPECT_TRUE() for
 * more information.
 */
#define KUNIT_EXPECT_GT(test, left, right) \
	KUNIT_EXPECT_GT_MSG(test, left, right, NULL)

#define KUNIT_EXPECT_GT_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_INT_ASSERTION(test,				       \
				   KUNIT_EXPECTATION,			       \
				   left, >, right,			       \
				   fmt,					       \
				    ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_GE() - Expects that @left is greater than or equal to @right.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a primitive C type.
 * @right: an arbitrary expression that evaluates to a primitive C type.
 *
 * Sets an expectation that the value that @left evaluates to is greater than
 * the value that @right evaluates to. This is semantically equivalent to
 * KUNIT_EXPECT_TRUE(@test, (@left) >= (@right)). See KUNIT_EXPECT_TRUE() for
 * more information.
 */
#define KUNIT_EXPECT_GE(test, left, right) \
	KUNIT_EXPECT_GE_MSG(test, left, right, NULL)

#define KUNIT_EXPECT_GE_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_INT_ASSERTION(test,				       \
				   KUNIT_EXPECTATION,			       \
				   left, >=, right,			       \
				   fmt,					       \
				    ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_STREQ() - Expects that strings @left and @right are equal.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a null terminated string.
 * @right: an arbitrary expression that evaluates to a null terminated string.
 *
 * Sets an expectation that the values that @left and @right evaluate to are
 * equal. This is semantically equivalent to
 * KUNIT_EXPECT_TRUE(@test, !strcmp((@left), (@right))). See KUNIT_EXPECT_TRUE()
 * for more information.
 */
#define KUNIT_EXPECT_STREQ(test, left, right) \
	KUNIT_EXPECT_STREQ_MSG(test, left, right, NULL)

#define KUNIT_EXPECT_STREQ_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_STR_ASSERTION(test,				       \
				   KUNIT_EXPECTATION,			       \
				   left, ==, right,			       \
				   fmt,					       \
				   ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_STRNEQ() - Expects that strings @left and @right are not equal.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a null terminated string.
 * @right: an arbitrary expression that evaluates to a null terminated string.
 *
 * Sets an expectation that the values that @left and @right evaluate to are
 * not equal. This is semantically equivalent to
 * KUNIT_EXPECT_TRUE(@test, strcmp((@left), (@right))). See KUNIT_EXPECT_TRUE()
 * for more information.
 */
#define KUNIT_EXPECT_STRNEQ(test, left, right) \
	KUNIT_EXPECT_STRNEQ_MSG(test, left, right, NULL)

#define KUNIT_EXPECT_STRNEQ_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_STR_ASSERTION(test,				       \
				   KUNIT_EXPECTATION,			       \
				   left, !=, right,			       \
				   fmt,					       \
				   ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_NULL() - Expects that @ptr is null.
 * @test: The test context object.
 * @ptr: an arbitrary pointer.
 *
 * Sets an expectation that the value that @ptr evaluates to is null. This is
 * semantically equivalent to KUNIT_EXPECT_PTR_EQ(@test, ptr, NULL).
 * See KUNIT_EXPECT_TRUE() for more information.
 */
#define KUNIT_EXPECT_NULL(test, ptr)				               \
	KUNIT_EXPECT_NULL_MSG(test,					       \
			      ptr,					       \
			      NULL)

#define KUNIT_EXPECT_NULL_MSG(test, ptr, fmt, ...)	                       \
	KUNIT_BINARY_PTR_ASSERTION(test,				       \
				   KUNIT_EXPECTATION,			       \
				   ptr, ==, NULL,			       \
				   fmt,					       \
				   ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_NOT_NULL() - Expects that @ptr is not null.
 * @test: The test context object.
 * @ptr: an arbitrary pointer.
 *
 * Sets an expectation that the value that @ptr evaluates to is not null. This
 * is semantically equivalent to KUNIT_EXPECT_PTR_NE(@test, ptr, NULL).
 * See KUNIT_EXPECT_TRUE() for more information.
 */
#define KUNIT_EXPECT_NOT_NULL(test, ptr)			               \
	KUNIT_EXPECT_NOT_NULL_MSG(test,					       \
				  ptr,					       \
				  NULL)

#define KUNIT_EXPECT_NOT_NULL_MSG(test, ptr, fmt, ...)	                       \
	KUNIT_BINARY_PTR_ASSERTION(test,				       \
				   KUNIT_EXPECTATION,			       \
				   ptr, !=, NULL,			       \
				   fmt,					       \
				   ##__VA_ARGS__)

/**
 * KUNIT_EXPECT_NOT_ERR_OR_NULL() - Expects that @ptr is not null and not err.
 * @test: The test context object.
 * @ptr: an arbitrary pointer.
 *
 * Sets an expectation that the value that @ptr evaluates to is not null and not
 * an errno stored in a pointer. This is semantically equivalent to
 * KUNIT_EXPECT_TRUE(@test, !IS_ERR_OR_NULL(@ptr)). See KUNIT_EXPECT_TRUE() for
 * more information.
 */
#define KUNIT_EXPECT_NOT_ERR_OR_NULL(test, ptr) \
	KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, ptr, NULL)

#define KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, ptr, fmt, ...)		       \
	KUNIT_PTR_NOT_ERR_OR_NULL_MSG_ASSERTION(test,			       \
						KUNIT_EXPECTATION,	       \
						ptr,			       \
						fmt,			       \
						##__VA_ARGS__)

#define KUNIT_ASSERT_FAILURE(test, fmt, ...) \
	KUNIT_FAIL_ASSERTION(test, KUNIT_ASSERTION, fmt, ##__VA_ARGS__)

/**
 * KUNIT_ASSERT_TRUE() - Sets an assertion that @condition is true.
 * @test: The test context object.
 * @condition: an arbitrary boolean expression. The test fails and aborts when
 * this does not evaluate to true.
 *
 * This and assertions of the form `KUNIT_ASSERT_*` will cause the test case to
 * fail *and immediately abort* when the specified condition is not met. Unlike
 * an expectation failure, it will prevent the test case from continuing to run;
 * this is otherwise known as an *assertion failure*.
 */
#define KUNIT_ASSERT_TRUE(test, condition) \
	KUNIT_ASSERT_TRUE_MSG(test, condition, NULL)

#define KUNIT_ASSERT_TRUE_MSG(test, condition, fmt, ...)		       \
	KUNIT_TRUE_MSG_ASSERTION(test,					       \
				 KUNIT_ASSERTION,			       \
				 condition,				       \
				 fmt,					       \
				 ##__VA_ARGS__)

/**
 * KUNIT_ASSERT_FALSE() - Sets an assertion that @condition is false.
 * @test: The test context object.
 * @condition: an arbitrary boolean expression.
 *
 * Sets an assertion that the value that @condition evaluates to is false. This
 * is the same as KUNIT_EXPECT_FALSE(), except it causes an assertion failure
 * (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
 */
#define KUNIT_ASSERT_FALSE(test, condition) \
	KUNIT_ASSERT_FALSE_MSG(test, condition, NULL)

#define KUNIT_ASSERT_FALSE_MSG(test, condition, fmt, ...)		       \
	KUNIT_FALSE_MSG_ASSERTION(test,					       \
				  KUNIT_ASSERTION,			       \
				  condition,				       \
				  fmt,					       \
				  ##__VA_ARGS__)

/**
 * KUNIT_ASSERT_EQ() - Sets an assertion that @left and @right are equal.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a primitive C type.
 * @right: an arbitrary expression that evaluates to a primitive C type.
 *
 * Sets an assertion that the values that @left and @right evaluate to are
 * equal. This is the same as KUNIT_EXPECT_EQ(), except it causes an assertion
 * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
 */
#define KUNIT_ASSERT_EQ(test, left, right) \
	KUNIT_ASSERT_EQ_MSG(test, left, right, NULL)

#define KUNIT_ASSERT_EQ_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_INT_ASSERTION(test,				       \
				   KUNIT_ASSERTION,			       \
				   left, ==, right,			       \
				   fmt,					       \
				    ##__VA_ARGS__)

/**
 * KUNIT_ASSERT_PTR_EQ() - Asserts that pointers @left and @right are equal.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a pointer.
 * @right: an arbitrary expression that evaluates to a pointer.
 *
 * Sets an assertion that the values that @left and @right evaluate to are
 * equal. This is the same as KUNIT_EXPECT_EQ(), except it causes an assertion
 * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
 */
#define KUNIT_ASSERT_PTR_EQ(test, left, right) \
	KUNIT_ASSERT_PTR_EQ_MSG(test, left, right, NULL)

#define KUNIT_ASSERT_PTR_EQ_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_PTR_ASSERTION(test,				       \
				   KUNIT_ASSERTION,			       \
				   left, ==, right,			       \
				   fmt,					       \
				   ##__VA_ARGS__)

/**
 * KUNIT_ASSERT_NE() - An assertion that @left and @right are not equal.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a primitive C type.
 * @right: an arbitrary expression that evaluates to a primitive C type.
 *
 * Sets an assertion that the values that @left and @right evaluate to are not
 * equal. This is the same as KUNIT_EXPECT_NE(), except it causes an assertion
 * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
 */
#define KUNIT_ASSERT_NE(test, left, right) \
	KUNIT_ASSERT_NE_MSG(test, left, right, NULL)

#define KUNIT_ASSERT_NE_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_INT_ASSERTION(test,				       \
				   KUNIT_ASSERTION,			       \
				   left, !=, right,			       \
				   fmt,					       \
				    ##__VA_ARGS__)

/**
 * KUNIT_ASSERT_PTR_NE() - Asserts that pointers @left and @right are not equal.
 * KUNIT_ASSERT_PTR_EQ() - Asserts that pointers @left and @right are equal.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a pointer.
 * @right: an arbitrary expression that evaluates to a pointer.
 *
 * Sets an assertion that the values that @left and @right evaluate to are not
 * equal. This is the same as KUNIT_EXPECT_NE(), except it causes an assertion
 * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
 */
#define KUNIT_ASSERT_PTR_NE(test, left, right) \
	KUNIT_ASSERT_PTR_NE_MSG(test, left, right, NULL)

#define KUNIT_ASSERT_PTR_NE_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_PTR_ASSERTION(test,				       \
				   KUNIT_ASSERTION,			       \
				   left, !=, right,			       \
				   fmt,					       \
				   ##__VA_ARGS__)
/**
 * KUNIT_ASSERT_LT() - An assertion that @left is less than @right.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a primitive C type.
 * @right: an arbitrary expression that evaluates to a primitive C type.
 *
 * Sets an assertion that the value that @left evaluates to is less than the
 * value that @right evaluates to. This is the same as KUNIT_EXPECT_LT(), except
 * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion
 * is not met.
 */
#define KUNIT_ASSERT_LT(test, left, right) \
	KUNIT_ASSERT_LT_MSG(test, left, right, NULL)

#define KUNIT_ASSERT_LT_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_INT_ASSERTION(test,				       \
				   KUNIT_ASSERTION,			       \
				   left, <, right,			       \
				   fmt,					       \
				    ##__VA_ARGS__)
/**
 * KUNIT_ASSERT_LE() - An assertion that @left is less than or equal to @right.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a primitive C type.
 * @right: an arbitrary expression that evaluates to a primitive C type.
 *
 * Sets an assertion that the value that @left evaluates to is less than or
 * equal to the value that @right evaluates to. This is the same as
 * KUNIT_EXPECT_LE(), except it causes an assertion failure (see
 * KUNIT_ASSERT_TRUE()) when the assertion is not met.
 */
#define KUNIT_ASSERT_LE(test, left, right) \
	KUNIT_ASSERT_LE_MSG(test, left, right, NULL)

#define KUNIT_ASSERT_LE_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_INT_ASSERTION(test,				       \
				   KUNIT_ASSERTION,			       \
				   left, <=, right,			       \
				   fmt,					       \
				    ##__VA_ARGS__)

/**
 * KUNIT_ASSERT_GT() - An assertion that @left is greater than @right.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a primitive C type.
 * @right: an arbitrary expression that evaluates to a primitive C type.
 *
 * Sets an assertion that the value that @left evaluates to is greater than the
 * value that @right evaluates to. This is the same as KUNIT_EXPECT_GT(), except
 * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion
 * is not met.
 */
#define KUNIT_ASSERT_GT(test, left, right) \
	KUNIT_ASSERT_GT_MSG(test, left, right, NULL)

#define KUNIT_ASSERT_GT_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_INT_ASSERTION(test,				       \
				   KUNIT_ASSERTION,			       \
				   left, >, right,			       \
				   fmt,					       \
				    ##__VA_ARGS__)

/**
 * KUNIT_ASSERT_GE() - Assertion that @left is greater than or equal to @right.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a primitive C type.
 * @right: an arbitrary expression that evaluates to a primitive C type.
 *
 * Sets an assertion that the value that @left evaluates to is greater than the
 * value that @right evaluates to. This is the same as KUNIT_EXPECT_GE(), except
 * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion
 * is not met.
 */
#define KUNIT_ASSERT_GE(test, left, right) \
	KUNIT_ASSERT_GE_MSG(test, left, right, NULL)

#define KUNIT_ASSERT_GE_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_INT_ASSERTION(test,				       \
				   KUNIT_ASSERTION,			       \
				   left, >=, right,			       \
				   fmt,					       \
				    ##__VA_ARGS__)

/**
 * KUNIT_ASSERT_STREQ() - An assertion that strings @left and @right are equal.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a null terminated string.
 * @right: an arbitrary expression that evaluates to a null terminated string.
 *
 * Sets an assertion that the values that @left and @right evaluate to are
 * equal. This is the same as KUNIT_EXPECT_STREQ(), except it causes an
 * assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
 */
#define KUNIT_ASSERT_STREQ(test, left, right) \
	KUNIT_ASSERT_STREQ_MSG(test, left, right, NULL)

#define KUNIT_ASSERT_STREQ_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_STR_ASSERTION(test,				       \
				   KUNIT_ASSERTION,			       \
				   left, ==, right,			       \
				   fmt,					       \
				   ##__VA_ARGS__)

/**
 * KUNIT_ASSERT_STRNEQ() - Expects that strings @left and @right are not equal.
 * @test: The test context object.
 * @left: an arbitrary expression that evaluates to a null terminated string.
 * @right: an arbitrary expression that evaluates to a null terminated string.
 *
 * Sets an expectation that the values that @left and @right evaluate to are
 * not equal. This is semantically equivalent to
 * KUNIT_ASSERT_TRUE(@test, strcmp((@left), (@right))). See KUNIT_ASSERT_TRUE()
 * for more information.
 */
#define KUNIT_ASSERT_STRNEQ(test, left, right) \
	KUNIT_ASSERT_STRNEQ_MSG(test, left, right, NULL)

#define KUNIT_ASSERT_STRNEQ_MSG(test, left, right, fmt, ...)		       \
	KUNIT_BINARY_STR_ASSERTION(test,				       \
				   KUNIT_ASSERTION,			       \
				   left, !=, right,			       \
				   fmt,					       \
				   ##__VA_ARGS__)

/**
 * KUNIT_ASSERT_NULL() - Asserts that pointers @ptr is null.
 * @test: The test context object.
 * @ptr: an arbitrary pointer.
 *
 * Sets an assertion that the values that @ptr evaluates to is null. This is
 * the same as KUNIT_EXPECT_NULL(), except it causes an assertion
 * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
 */
#define KUNIT_ASSERT_NULL(test, ptr) \
	KUNIT_ASSERT_NULL_MSG(test,					       \
			      ptr,					       \
			      NULL)

#define KUNIT_ASSERT_NULL_MSG(test, ptr, fmt, ...) \
	KUNIT_BINARY_PTR_ASSERTION(test,				       \
				   KUNIT_ASSERTION,			       \
				   ptr, ==, NULL,			       \
				   fmt,					       \
				   ##__VA_ARGS__)

/**
 * KUNIT_ASSERT_NOT_NULL() - Asserts that pointers @ptr is not null.
 * @test: The test context object.
 * @ptr: an arbitrary pointer.
 *
 * Sets an assertion that the values that @ptr evaluates to is not null. This
 * is the same as KUNIT_EXPECT_NOT_NULL(), except it causes an assertion
 * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
 */
#define KUNIT_ASSERT_NOT_NULL(test, ptr) \
	KUNIT_ASSERT_NOT_NULL_MSG(test,					       \
				  ptr,					       \
				  NULL)

#define KUNIT_ASSERT_NOT_NULL_MSG(test, ptr, fmt, ...) \
	KUNIT_BINARY_PTR_ASSERTION(test,				       \
				   KUNIT_ASSERTION,			       \
				   ptr, !=, NULL,			       \
				   fmt,					       \
				   ##__VA_ARGS__)

/**
 * KUNIT_ASSERT_NOT_ERR_OR_NULL() - Assertion that @ptr is not null and not err.
 * @test: The test context object.
 * @ptr: an arbitrary pointer.
 *
 * Sets an assertion that the value that @ptr evaluates to is not null and not
 * an errno stored in a pointer. This is the same as
 * KUNIT_EXPECT_NOT_ERR_OR_NULL(), except it causes an assertion failure (see
 * KUNIT_ASSERT_TRUE()) when the assertion is not met.
 */
#define KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr) \
	KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, NULL)

#define KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, fmt, ...)		       \
	KUNIT_PTR_NOT_ERR_OR_NULL_MSG_ASSERTION(test,			       \
						KUNIT_ASSERTION,	       \
						ptr,			       \
						fmt,			       \
						##__VA_ARGS__)

/**
 * KUNIT_ARRAY_PARAM() - Define test parameter generator from an array.
 * @name:  prefix for the test parameter generator function.
 * @array: array of test parameters.
 * @get_desc: function to convert param to description; NULL to use default
 *
 * Define function @name_gen_params which uses @array to generate parameters.
 */
#define KUNIT_ARRAY_PARAM(name, array, get_desc)						\
	static const void *name##_gen_params(const void *prev, char *desc)			\
	{											\
		typeof((array)[0]) *__next = prev ? ((typeof(__next)) prev) + 1 : (array);	\
		if (__next - (array) < ARRAY_SIZE((array))) {					\
			void (*__get_desc)(typeof(__next), char *) = get_desc;			\
			if (__get_desc)								\
				__get_desc(__next, desc);					\
			return __next;								\
		}										\
		return NULL;									\
	}

// TODO(dlatypov@google.com): consider eventually migrating users to explicitly
// include resource.h themselves if they need it.
#include <kunit/resource.h>

#endif /* _KUNIT_TEST_H */