include/kunit/test.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Base unit test (KUnit) API.
   4  *
   5  * Copyright (C) 2019, Google LLC.
   6  * Author: Brendan Higgins <[email protected]>
   7  */
   8
   9 #ifndef _KUNIT_TEST_H
  10 #define _KUNIT_TEST_H
  11
  12 #include <kunit/assert.h>
  13 #include <kunit/try-catch.h>
  14
  15 #include <linux/compiler.h>
  16 #include <linux/container_of.h>
  17 #include <linux/err.h>
  18 #include <linux/init.h>
  19 #include <linux/kconfig.h>
  20 #include <linux/kref.h>
  21 #include <linux/list.h>
  22 #include <linux/module.h>
  23 #include <linux/slab.h>
  24 #include <linux/spinlock.h>
  25 #include <linux/string.h>
  26 #include <linux/types.h>
  27
  28 #include <asm/rwonce.h>
  29
  30 struct kunit;
  31
  32 /* Size of log associated with test. */
  33 #define KUNIT_LOG_SIZE  512
  34
  35 /* Maximum size of parameter description string. */
  36 #define KUNIT_PARAM_DESC_SIZE 128
  37
  38 /* Maximum size of a status comment. */
  39 #define KUNIT_STATUS_COMMENT_SIZE 256
  40
  41 /*
  42  * TAP specifies subtest stream indentation of 4 spaces, 8 spaces for a
  43  * sub-subtest.  See the "Subtests" section in
  44  * https://node-tap.org/tap-protocol/
  45  */
  46 #define KUNIT_SUBTEST_INDENT            "    "
  47 #define KUNIT_SUBSUBTEST_INDENT         "        "
  48
  49 /**
  50  * enum kunit_status - Type of result for a test or test suite
  51  * @KUNIT_SUCCESS: Denotes the test suite has not failed nor been skipped
  52  * @KUNIT_FAILURE: Denotes the test has failed.
  53  * @KUNIT_SKIPPED: Denotes the test has been skipped.
  54  */
  55 enum kunit_status {
  56         KUNIT_SUCCESS,
  57         KUNIT_FAILURE,
  58         KUNIT_SKIPPED,
  59 };
  60
  61 /**
  62  * struct kunit_case - represents an individual test case.
  63  *
  64  * @run_case: the function representing the actual test case.
  65  * @name:     the name of the test case.
  66  * @generate_params: the generator function for parameterized tests.
  67  *
  68  * A test case is a function with the signature,
  69  * ``void (*)(struct kunit *)``
  70  * that makes expectations and assertions (see KUNIT_EXPECT_TRUE() and
  71  * KUNIT_ASSERT_TRUE()) about code under test. Each test case is associated
  72  * with a &struct kunit_suite and will be run after the suite's init
  73  * function and followed by the suite's exit function.
  74  *
  75  * A test case should be static and should only be created with the
  76  * KUNIT_CASE() macro; additionally, every array of test cases should be
  77  * terminated with an empty test case.
  78  *
  79  * Example:
  80  *
  81  * .. code-block:: c
  82  *
  83  *      void add_test_basic(struct kunit *test)
  84  *      {
  85  *              KUNIT_EXPECT_EQ(test, 1, add(1, 0));
  86  *              KUNIT_EXPECT_EQ(test, 2, add(1, 1));
  87  *              KUNIT_EXPECT_EQ(test, 0, add(-1, 1));
  88  *              KUNIT_EXPECT_EQ(test, INT_MAX, add(0, INT_MAX));
  89  *              KUNIT_EXPECT_EQ(test, -1, add(INT_MAX, INT_MIN));
  90  *      }
  91  *
  92  *      static struct kunit_case example_test_cases[] = {
  93  *              KUNIT_CASE(add_test_basic),
  94  *              {}
  95  *      };
  96  *
  97  */
  98 struct kunit_case {
  99         void (*run_case)(struct kunit *test);
 100         const char *name;
 101         const void* (*generate_params)(const void *prev, char *desc);
 102
 103         /* private: internal use only. */
 104         enum kunit_status status;
 105         char *log;
 106 };
 107
 108 static inline char *kunit_status_to_ok_not_ok(enum kunit_status status)
 109 {
 110         switch (status) {
 111         case KUNIT_SKIPPED:
 112         case KUNIT_SUCCESS:
 113                 return "ok";
 114         case KUNIT_FAILURE:
 115                 return "not ok";
 116         }
 117         return "invalid";
 118 }
 119
 120 /**
 121  * KUNIT_CASE - A helper for creating a &struct kunit_case
 122  *
 123  * @test_name: a reference to a test case function.
 124  *
 125  * Takes a symbol for a function representing a test case and creates a
 126  * &struct kunit_case object from it. See the documentation for
 127  * &struct kunit_case for an example on how to use it.
 128  */
 129 #define KUNIT_CASE(test_name) { .run_case = test_name, .name = #test_name }
 130
 131 /**
 132  * KUNIT_CASE_PARAM - A helper for creation a parameterized &struct kunit_case
 133  *
 134  * @test_name: a reference to a test case function.
 135  * @gen_params: a reference to a parameter generator function.
 136  *
 137  * The generator function::
 138  *
 139  *      const void* gen_params(const void *prev, char *desc)
 140  *
 141  * is used to lazily generate a series of arbitrarily typed values that fit into
 142  * a void*. The argument @prev is the previously returned value, which should be
 143  * used to derive the next value; @prev is set to NULL on the initial generator
 144  * call. When no more values are available, the generator must return NULL.
 145  * Optionally write a string into @desc (size of KUNIT_PARAM_DESC_SIZE)
 146  * describing the parameter.
 147  */
 148 #define KUNIT_CASE_PARAM(test_name, gen_params)                 \
 149                 { .run_case = test_name, .name = #test_name,    \
 150                   .generate_params = gen_params }
 151
 152 /**
 153  * struct kunit_suite - describes a related collection of &struct kunit_case
 154  *
 155  * @name:       the name of the test. Purely informational.
 156  * @suite_init: called once per test suite before the test cases.
 157  * @suite_exit: called once per test suite after all test cases.
 158  * @init:       called before every test case.
 159  * @exit:       called after every test case.
 160  * @test_cases: a null terminated array of test cases.
 161  *
 162  * A kunit_suite is a collection of related &struct kunit_case s, such that
 163  * @init is called before every test case and @exit is called after every
 164  * test case, similar to the notion of a *test fixture* or a *test class*
 165  * in other unit testing frameworks like JUnit or Googletest.
 166  *
 167  * Every &struct kunit_case must be associated with a kunit_suite for KUnit
 168  * to run it.
 169  */
 170 struct kunit_suite {
 171         const char name[256];
 172         int (*suite_init)(struct kunit_suite *suite);
 173         void (*suite_exit)(struct kunit_suite *suite);
 174         int (*init)(struct kunit *test);
 175         void (*exit)(struct kunit *test);
 176         struct kunit_case *test_cases;
 177
 178         /* private: internal use only */
 179         char status_comment[KUNIT_STATUS_COMMENT_SIZE];
 180         struct dentry *debugfs;
 181         char *log;
 182         int suite_init_err;
 183 };
 184
 185 /**
 186  * struct kunit - represents a running instance of a test.
 187  *
 188  * @priv: for user to store arbitrary data. Commonly used to pass data
 189  *        created in the init function (see &struct kunit_suite).
 190  *
 191  * Used to store information about the current context under which the test
 192  * is running. Most of this data is private and should only be accessed
 193  * indirectly via public functions; the one exception is @priv which can be
 194  * used by the test writer to store arbitrary data.
 195  */
 196 struct kunit {
 197         void *priv;
 198
 199         /* private: internal use only. */
 200         const char *name; /* Read only after initialization! */
 201         char *log; /* Points at case log after initialization */
 202         struct kunit_try_catch try_catch;
 203         /* param_value is the current parameter value for a test case. */
 204         const void *param_value;
 205         /* param_index stores the index of the parameter in parameterized tests. */
 206         int param_index;
 207         /*
 208          * success starts as true, and may only be set to false during a
 209          * test case; thus, it is safe to update this across multiple
 210          * threads using WRITE_ONCE; however, as a consequence, it may only
 211          * be read after the test case finishes once all threads associated
 212          * with the test case have terminated.
 213          */
 214         spinlock_t lock; /* Guards all mutable test state. */
 215         enum kunit_status status; /* Read only after test_case finishes! */
 216         /*
 217          * Because resources is a list that may be updated multiple times (with
 218          * new resources) from any thread associated with a test case, we must
 219          * protect it with some type of lock.
 220          */
 221         struct list_head resources; /* Protected by lock. */
 222
 223         char status_comment[KUNIT_STATUS_COMMENT_SIZE];
 224 };
 225
 226 static inline void kunit_set_failure(struct kunit *test)
 227 {
 228         WRITE_ONCE(test->status, KUNIT_FAILURE);
 229 }
 230
 231 void kunit_init_test(struct kunit *test, const char *name, char *log);
 232
 233 int kunit_run_tests(struct kunit_suite *suite);
 234
 235 size_t kunit_suite_num_test_cases(struct kunit_suite *suite);
 236
 237 unsigned int kunit_test_case_num(struct kunit_suite *suite,
 238                                  struct kunit_case *test_case);
 239
 240 int __kunit_test_suites_init(struct kunit_suite * const * const suites);
 241
 242 void __kunit_test_suites_exit(struct kunit_suite **suites);
 243
 244 #if IS_BUILTIN(CONFIG_KUNIT)
 245 int kunit_run_all_tests(void);
 246 #else
 247 static inline int kunit_run_all_tests(void)
 248 {
 249         return 0;
 250 }
 251 #endif /* IS_BUILTIN(CONFIG_KUNIT) */
 252
 253 #ifdef MODULE
 254 /**
 255  * kunit_test_suites_for_module() - used to register one or more
 256  *                       &struct kunit_suite with KUnit.
 257  *
 258  * @__suites: a statically allocated list of &struct kunit_suite.
 259  *
 260  * Registers @__suites with the test framework. See &struct kunit_suite for
 261  * more information.
 262  *
 263  * If a test suite is built-in, module_init() gets translated into
 264  * an initcall which we don't want as the idea is that for builtins
 265  * the executor will manage execution.  So ensure we do not define
 266  * module_{init|exit} functions for the builtin case when registering
 267  * suites via kunit_test_suites() below.
 268  */
 269 #define kunit_test_suites_for_module(__suites)                          \
 270         static int __init kunit_test_suites_init(void)                  \
 271         {                                                               \
 272                 return __kunit_test_suites_init(__suites);              \
 273         }                                                               \
 274         module_init(kunit_test_suites_init);                            \
 275                                                                         \
 276         static void __exit kunit_test_suites_exit(void)                 \
 277         {                                                               \
 278                 return __kunit_test_suites_exit(__suites);              \
 279         }                                                               \
 280         module_exit(kunit_test_suites_exit)
 281 #else
 282 #define kunit_test_suites_for_module(__suites)
 283 #endif /* MODULE */
 284
 285 #define __kunit_test_suites(unique_array, unique_suites, ...)                  \
 286         static struct kunit_suite *unique_array[] = { __VA_ARGS__, NULL };     \
 287         kunit_test_suites_for_module(unique_array);                            \
 288         static struct kunit_suite **unique_suites                              \
 289         __used __section(".kunit_test_suites") = unique_array
 290
 291 /**
 292  * kunit_test_suites() - used to register one or more &struct kunit_suite
 293  *                       with KUnit.
 294  *
 295  * @__suites: a statically allocated list of &struct kunit_suite.
 296  *
 297  * Registers @suites with the test framework. See &struct kunit_suite for
 298  * more information.
 299  *
 300  * When builtin,  KUnit tests are all run via executor; this is done
 301  * by placing the array of struct kunit_suite * in the .kunit_test_suites
 302  * ELF section.
 303  *
 304  * An alternative is to build the tests as a module.  Because modules do not
 305  * support multiple initcall()s, we need to initialize an array of suites for a
 306  * module.
 307  *
 308  */
 309 #define kunit_test_suites(__suites...)                                          \
 310         __kunit_test_suites(__UNIQUE_ID(array),                         \
 311                             __UNIQUE_ID(suites),                        \
 312                             ##__suites)
 313
 314 #define kunit_test_suite(suite) kunit_test_suites(&suite)
 315
 316 /**
 317  * kunit_test_init_section_suites() - used to register one or more &struct
 318  *                                    kunit_suite containing init functions or
 319  *                                    init data.
 320  *
 321  * @__suites: a statically allocated list of &struct kunit_suite.
 322  *
 323  * This functions identically as &kunit_test_suites() except that it suppresses
 324  * modpost warnings for referencing functions marked __init or data marked
 325  * __initdata; this is OK because currently KUnit only runs tests upon boot
 326  * during the init phase or upon loading a module during the init phase.
 327  *
 328  * NOTE TO KUNIT DEVS: If we ever allow KUnit tests to be run after boot, these
 329  * tests must be excluded.
 330  *
 331  * The only thing this macro does that's different from kunit_test_suites is
 332  * that it suffixes the array and suite declarations it makes with _probe;
 333  * modpost suppresses warnings about referencing init data for symbols named in
 334  * this manner.
 335  */
 336 #define kunit_test_init_section_suites(__suites...)                     \
 337         __kunit_test_suites(CONCATENATE(__UNIQUE_ID(array), _probe),    \
 338                             CONCATENATE(__UNIQUE_ID(suites), _probe),   \
 339                             ##__suites)
 340
 341 #define kunit_test_init_section_suite(suite)    \
 342         kunit_test_init_section_suites(&suite)
 343
 344 #define kunit_suite_for_each_test_case(suite, test_case)                \
 345         for (test_case = suite->test_cases; test_case->run_case; test_case++)
 346
 347 enum kunit_status kunit_suite_has_succeeded(struct kunit_suite *suite);
 348
 349 /**
 350  * kunit_kmalloc_array() - Like kmalloc_array() except the allocation is *test managed*.
 351  * @test: The test context object.
 352  * @n: number of elements.
 353  * @size: The size in bytes of the desired memory.
 354  * @gfp: flags passed to underlying kmalloc().
 355  *
 356  * Just like `kmalloc_array(...)`, except the allocation is managed by the test case
 357  * and is automatically cleaned up after the test case concludes. See &struct
 358  * kunit_resource for more information.
 359  */
 360 void *kunit_kmalloc_array(struct kunit *test, size_t n, size_t size, gfp_t gfp);
 361
 362 /**
 363  * kunit_kmalloc() - Like kmalloc() except the allocation is *test managed*.
 364  * @test: The test context object.
 365  * @size: The size in bytes of the desired memory.
 366  * @gfp: flags passed to underlying kmalloc().
 367  *
 368  * See kmalloc() and kunit_kmalloc_array() for more information.
 369  */
 370 static inline void *kunit_kmalloc(struct kunit *test, size_t size, gfp_t gfp)
 371 {
 372         return kunit_kmalloc_array(test, 1, size, gfp);
 373 }
 374
 375 /**
 376  * kunit_kfree() - Like kfree except for allocations managed by KUnit.
 377  * @test: The test case to which the resource belongs.
 378  * @ptr: The memory allocation to free.
 379  */
 380 void kunit_kfree(struct kunit *test, const void *ptr);
 381
 382 /**
 383  * kunit_kzalloc() - Just like kunit_kmalloc(), but zeroes the allocation.
 384  * @test: The test context object.
 385  * @size: The size in bytes of the desired memory.
 386  * @gfp: flags passed to underlying kmalloc().
 387  *
 388  * See kzalloc() and kunit_kmalloc_array() for more information.
 389  */
 390 static inline void *kunit_kzalloc(struct kunit *test, size_t size, gfp_t gfp)
 391 {
 392         return kunit_kmalloc(test, size, gfp | __GFP_ZERO);
 393 }
 394
 395 /**
 396  * kunit_kcalloc() - Just like kunit_kmalloc_array(), but zeroes the allocation.
 397  * @test: The test context object.
 398  * @n: number of elements.
 399  * @size: The size in bytes of the desired memory.
 400  * @gfp: flags passed to underlying kmalloc().
 401  *
 402  * See kcalloc() and kunit_kmalloc_array() for more information.
 403  */
 404 static inline void *kunit_kcalloc(struct kunit *test, size_t n, size_t size, gfp_t gfp)
 405 {
 406         return kunit_kmalloc_array(test, n, size, gfp | __GFP_ZERO);
 407 }
 408
 409 void kunit_cleanup(struct kunit *test);
 410
 411 void __printf(2, 3) kunit_log_append(char *log, const char *fmt, ...);
 412
 413 /**
 414  * kunit_mark_skipped() - Marks @test_or_suite as skipped
 415  *
 416  * @test_or_suite: The test context object.
 417  * @fmt:  A printk() style format string.
 418  *
 419  * Marks the test as skipped. @fmt is given output as the test status
 420  * comment, typically the reason the test was skipped.
 421  *
 422  * Test execution continues after kunit_mark_skipped() is called.
 423  */
 424 #define kunit_mark_skipped(test_or_suite, fmt, ...)                     \
 425         do {                                                            \
 426                 WRITE_ONCE((test_or_suite)->status, KUNIT_SKIPPED);     \
 427                 scnprintf((test_or_suite)->status_comment,              \
 428                           KUNIT_STATUS_COMMENT_SIZE,                    \
 429                           fmt, ##__VA_ARGS__);                          \
 430         } while (0)
 431
 432 /**
 433  * kunit_skip() - Marks @test_or_suite as skipped
 434  *
 435  * @test_or_suite: The test context object.
 436  * @fmt:  A printk() style format string.
 437  *
 438  * Skips the test. @fmt is given output as the test status
 439  * comment, typically the reason the test was skipped.
 440  *
 441  * Test execution is halted after kunit_skip() is called.
 442  */
 443 #define kunit_skip(test_or_suite, fmt, ...)                             \
 444         do {                                                            \
 445                 kunit_mark_skipped((test_or_suite), fmt, ##__VA_ARGS__);\
 446                 kunit_try_catch_throw(&((test_or_suite)->try_catch));   \
 447         } while (0)
 448
 449 /*
 450  * printk and log to per-test or per-suite log buffer.  Logging only done
 451  * if CONFIG_KUNIT_DEBUGFS is 'y'; if it is 'n', no log is allocated/used.
 452  */
 453 #define kunit_log(lvl, test_or_suite, fmt, ...)                         \
 454         do {                                                            \
 455                 printk(lvl fmt, ##__VA_ARGS__);                         \
 456                 kunit_log_append((test_or_suite)->log,  fmt "\n",       \
 457                                  ##__VA_ARGS__);                        \
 458         } while (0)
 459
 460 #define kunit_printk(lvl, test, fmt, ...)                               \
 461         kunit_log(lvl, test, KUNIT_SUBTEST_INDENT "# %s: " fmt,         \
 462                   (test)->name, ##__VA_ARGS__)
 463
 464 /**
 465  * kunit_info() - Prints an INFO level message associated with @test.
 466  *
 467  * @test: The test context object.
 468  * @fmt:  A printk() style format string.
 469  *
 470  * Prints an info level message associated with the test suite being run.
 471  * Takes a variable number of format parameters just like printk().
 472  */
 473 #define kunit_info(test, fmt, ...) \
 474         kunit_printk(KERN_INFO, test, fmt, ##__VA_ARGS__)
 475
 476 /**
 477  * kunit_warn() - Prints a WARN level message associated with @test.
 478  *
 479  * @test: The test context object.
 480  * @fmt:  A printk() style format string.
 481  *
 482  * Prints a warning level message.
 483  */
 484 #define kunit_warn(test, fmt, ...) \
 485         kunit_printk(KERN_WARNING, test, fmt, ##__VA_ARGS__)
 486
 487 /**
 488  * kunit_err() - Prints an ERROR level message associated with @test.
 489  *
 490  * @test: The test context object.
 491  * @fmt:  A printk() style format string.
 492  *
 493  * Prints an error level message.
 494  */
 495 #define kunit_err(test, fmt, ...) \
 496         kunit_printk(KERN_ERR, test, fmt, ##__VA_ARGS__)
 497
 498 /**
 499  * KUNIT_SUCCEED() - A no-op expectation. Only exists for code clarity.
 500  * @test: The test context object.
 501  *
 502  * The opposite of KUNIT_FAIL(), it is an expectation that cannot fail. In other
 503  * words, it does nothing and only exists for code clarity. See
 504  * KUNIT_EXPECT_TRUE() for more information.
 505  */
 506 #define KUNIT_SUCCEED(test) do {} while (0)
 507
 508 void kunit_do_failed_assertion(struct kunit *test,
 509                                const struct kunit_loc *loc,
 510                                enum kunit_assert_type type,
 511                                const struct kunit_assert *assert,
 512                                const char *fmt, ...);
 513
 514 #define KUNIT_ASSERTION(test, assert_type, pass, assert_class, INITIALIZER, fmt, ...) do { \
 515         if (unlikely(!(pass))) {                                               \
 516                 static const struct kunit_loc __loc = KUNIT_CURRENT_LOC;       \
 517                 struct assert_class __assertion = INITIALIZER;                 \
 518                 kunit_do_failed_assertion(test,                                \
 519                                           &__loc,                              \
 520                                           assert_type,                         \
 521                                           &__assertion.assert,                 \
 522                                           fmt,                                 \
 523                                           ##__VA_ARGS__);                      \
 524         }                                                                      \
 525 } while (0)
 526
 527
 528 #define KUNIT_FAIL_ASSERTION(test, assert_type, fmt, ...)                      \
 529         KUNIT_ASSERTION(test,                                                  \
 530                         assert_type,                                           \
 531                         false,                                                 \
 532                         kunit_fail_assert,                                     \
 533                         KUNIT_INIT_FAIL_ASSERT_STRUCT,                         \
 534                         fmt,                                                   \
 535                         ##__VA_ARGS__)
 536
 537 /**
 538  * KUNIT_FAIL() - Always causes a test to fail when evaluated.
 539  * @test: The test context object.
 540  * @fmt: an informational message to be printed when the assertion is made.
 541  * @...: string format arguments.
 542  *
 543  * The opposite of KUNIT_SUCCEED(), it is an expectation that always fails. In
 544  * other words, it always results in a failed expectation, and consequently
 545  * always causes the test case to fail when evaluated. See KUNIT_EXPECT_TRUE()
 546  * for more information.
 547  */
 548 #define KUNIT_FAIL(test, fmt, ...)                                             \
 549         KUNIT_FAIL_ASSERTION(test,                                             \
 550                              KUNIT_EXPECTATION,                                \
 551                              fmt,                                              \
 552                              ##__VA_ARGS__)
 553
 554 #define KUNIT_UNARY_ASSERTION(test,                                            \
 555                               assert_type,                                     \
 556                               condition,                                       \
 557                               expected_true,                                   \
 558                               fmt,                                             \
 559                               ...)                                             \
 560         KUNIT_ASSERTION(test,                                                  \
 561                         assert_type,                                           \
 562                         !!(condition) == !!expected_true,                      \
 563                         kunit_unary_assert,                                    \
 564                         KUNIT_INIT_UNARY_ASSERT_STRUCT(#condition,             \
 565                                                        expected_true),         \
 566                         fmt,                                                   \
 567                         ##__VA_ARGS__)
 568
 569 #define KUNIT_TRUE_MSG_ASSERTION(test, assert_type, condition, fmt, ...)       \
 570         KUNIT_UNARY_ASSERTION(test,                                            \
 571                               assert_type,                                     \
 572                               condition,                                       \
 573                               true,                                            \
 574                               fmt,                                             \
 575                               ##__VA_ARGS__)
 576
 577 #define KUNIT_FALSE_MSG_ASSERTION(test, assert_type, condition, fmt, ...)      \
 578         KUNIT_UNARY_ASSERTION(test,                                            \
 579                               assert_type,                                     \
 580                               condition,                                       \
 581                               false,                                           \
 582                               fmt,                                             \
 583                               ##__VA_ARGS__)
 584
 585 /*
 586  * A factory macro for defining the assertions and expectations for the basic
 587  * comparisons defined for the built in types.
 588  *
 589  * Unfortunately, there is no common type that all types can be promoted to for
 590  * which all the binary operators behave the same way as for the actual types
 591  * (for example, there is no type that long long and unsigned long long can
 592  * both be cast to where the comparison result is preserved for all values). So
 593  * the best we can do is do the comparison in the original types and then coerce
 594  * everything to long long for printing; this way, the comparison behaves
 595  * correctly and the printed out value usually makes sense without
 596  * interpretation, but can always be interpreted to figure out the actual
 597  * value.
 598  */
 599 #define KUNIT_BASE_BINARY_ASSERTION(test,                                      \
 600                                     assert_class,                              \
 601                                     format_func,                               \
 602                                     assert_type,                               \
 603                                     left,                                      \
 604                                     op,                                        \
 605                                     right,                                     \
 606                                     fmt,                                       \
 607                                     ...)                                       \
 608 do {                                                                           \
 609         const typeof(left) __left = (left);                                    \
 610         const typeof(right) __right = (right);                                 \
 611         static const struct kunit_binary_assert_text __text = {                \
 612                 .operation = #op,                                              \
 613                 .left_text = #left,                                            \
 614                 .right_text = #right,                                          \
 615         };                                                                     \
 616                                                                                \
 617         KUNIT_ASSERTION(test,                                                  \
 618                         assert_type,                                           \
 619                         __left op __right,                                     \
 620                         assert_class,                                          \
 621                         KUNIT_INIT_BINARY_ASSERT_STRUCT(format_func,           \
 622                                                         &__text,               \
 623                                                         __left,                \
 624                                                         __right),              \
 625                         fmt,                                                   \
 626                         ##__VA_ARGS__);                                        \
 627 } while (0)
 628
 629 #define KUNIT_BINARY_INT_ASSERTION(test,                                       \
 630                                    assert_type,                                \
 631                                    left,                                       \
 632                                    op,                                         \
 633                                    right,                                      \
 634                                    fmt,                                        \
 635                                     ...)                                       \
 636         KUNIT_BASE_BINARY_ASSERTION(test,                                      \
 637                                     kunit_binary_assert,                       \
 638                                     kunit_binary_assert_format,                \
 639                                     assert_type,                               \
 640                                     left, op, right,                           \
 641                                     fmt,                                       \
 642                                     ##__VA_ARGS__)
 643
 644 #define KUNIT_BINARY_PTR_ASSERTION(test,                                       \
 645                                    assert_type,                                \
 646                                    left,                                       \
 647                                    op,                                         \
 648                                    right,                                      \
 649                                    fmt,                                        \
 650                                     ...)                                       \
 651         KUNIT_BASE_BINARY_ASSERTION(test,                                      \
 652                                     kunit_binary_ptr_assert,                   \
 653                                     kunit_binary_ptr_assert_format,            \
 654                                     assert_type,                               \
 655                                     left, op, right,                           \
 656                                     fmt,                                       \
 657                                     ##__VA_ARGS__)
 658
 659 #define KUNIT_BINARY_STR_ASSERTION(test,                                       \
 660                                    assert_type,                                \
 661                                    left,                                       \
 662                                    op,                                         \
 663                                    right,                                      \
 664                                    fmt,                                        \
 665                                    ...)                                        \
 666 do {                                                                           \
 667         const char *__left = (left);                                           \
 668         const char *__right = (right);                                         \
 669         static const struct kunit_binary_assert_text __text = {                \
 670                 .operation = #op,                                              \
 671                 .left_text = #left,                                            \
 672                 .right_text = #right,                                          \
 673         };                                                                     \
 674                                                                                \
 675         KUNIT_ASSERTION(test,                                                  \
 676                         assert_type,                                           \
 677                         strcmp(__left, __right) op 0,                          \
 678                         kunit_binary_str_assert,                               \
 679                         KUNIT_INIT_BINARY_ASSERT_STRUCT(kunit_binary_str_assert_format,\
 680                                                         &__text,               \
 681                                                         __left,                \
 682                                                         __right),              \
 683                         fmt,                                                   \
 684                         ##__VA_ARGS__);                                        \
 685 } while (0)
 686
 687 #define KUNIT_PTR_NOT_ERR_OR_NULL_MSG_ASSERTION(test,                          \
 688                                                 assert_type,                   \
 689                                                 ptr,                           \
 690                                                 fmt,                           \
 691                                                 ...)                           \
 692 do {                                                                           \
 693         const typeof(ptr) __ptr = (ptr);                                       \
 694                                                                                \
 695         KUNIT_ASSERTION(test,                                                  \
 696                         assert_type,                                           \
 697                         !IS_ERR_OR_NULL(__ptr),                                \
 698                         kunit_ptr_not_err_assert,                              \
 699                         KUNIT_INIT_PTR_NOT_ERR_STRUCT(#ptr,                    \
 700                                                       __ptr),                  \
 701                         fmt,                                                   \
 702                         ##__VA_ARGS__);                                        \
 703 } while (0)
 704
 705 /**
 706  * KUNIT_EXPECT_TRUE() - Causes a test failure when the expression is not true.
 707  * @test: The test context object.
 708  * @condition: an arbitrary boolean expression. The test fails when this does
 709  * not evaluate to true.
 710  *
 711  * This and expectations of the form `KUNIT_EXPECT_*` will cause the test case
 712  * to fail when the specified condition is not met; however, it will not prevent
 713  * the test case from continuing to run; this is otherwise known as an
 714  * *expectation failure*.
 715  */
 716 #define KUNIT_EXPECT_TRUE(test, condition) \
 717         KUNIT_EXPECT_TRUE_MSG(test, condition, NULL)
 718
 719 #define KUNIT_EXPECT_TRUE_MSG(test, condition, fmt, ...)                       \
 720         KUNIT_TRUE_MSG_ASSERTION(test,                                         \
 721                                  KUNIT_EXPECTATION,                            \
 722                                  condition,                                    \
 723                                  fmt,                                          \
 724                                  ##__VA_ARGS__)
 725
 726 /**
 727  * KUNIT_EXPECT_FALSE() - Makes a test failure when the expression is not false.
 728  * @test: The test context object.
 729  * @condition: an arbitrary boolean expression. The test fails when this does
 730  * not evaluate to false.
 731  *
 732  * Sets an expectation that @condition evaluates to false. See
 733  * KUNIT_EXPECT_TRUE() for more information.
 734  */
 735 #define KUNIT_EXPECT_FALSE(test, condition) \
 736         KUNIT_EXPECT_FALSE_MSG(test, condition, NULL)
 737
 738 #define KUNIT_EXPECT_FALSE_MSG(test, condition, fmt, ...)                      \
 739         KUNIT_FALSE_MSG_ASSERTION(test,                                        \
 740                                   KUNIT_EXPECTATION,                           \
 741                                   condition,                                   \
 742                                   fmt,                                         \
 743                                   ##__VA_ARGS__)
 744
 745 /**
 746  * KUNIT_EXPECT_EQ() - Sets an expectation that @left and @right are equal.
 747  * @test: The test context object.
 748  * @left: an arbitrary expression that evaluates to a primitive C type.
 749  * @right: an arbitrary expression that evaluates to a primitive C type.
 750  *
 751  * Sets an expectation that the values that @left and @right evaluate to are
 752  * equal. This is semantically equivalent to
 753  * KUNIT_EXPECT_TRUE(@test, (@left) == (@right)). See KUNIT_EXPECT_TRUE() for
 754  * more information.
 755  */
 756 #define KUNIT_EXPECT_EQ(test, left, right) \
 757         KUNIT_EXPECT_EQ_MSG(test, left, right, NULL)
 758
 759 #define KUNIT_EXPECT_EQ_MSG(test, left, right, fmt, ...)                       \
 760         KUNIT_BINARY_INT_ASSERTION(test,                                       \
 761                                    KUNIT_EXPECTATION,                          \
 762                                    left, ==, right,                            \
 763                                    fmt,                                        \
 764                                     ##__VA_ARGS__)
 765
 766 /**
 767  * KUNIT_EXPECT_PTR_EQ() - Expects that pointers @left and @right are equal.
 768  * @test: The test context object.
 769  * @left: an arbitrary expression that evaluates to a pointer.
 770  * @right: an arbitrary expression that evaluates to a pointer.
 771  *
 772  * Sets an expectation that the values that @left and @right evaluate to are
 773  * equal. This is semantically equivalent to
 774  * KUNIT_EXPECT_TRUE(@test, (@left) == (@right)). See KUNIT_EXPECT_TRUE() for
 775  * more information.
 776  */
 777 #define KUNIT_EXPECT_PTR_EQ(test, left, right)                                 \
 778         KUNIT_EXPECT_PTR_EQ_MSG(test, left, right, NULL)
 779
 780 #define KUNIT_EXPECT_PTR_EQ_MSG(test, left, right, fmt, ...)                   \
 781         KUNIT_BINARY_PTR_ASSERTION(test,                                       \
 782                                    KUNIT_EXPECTATION,                          \
 783                                    left, ==, right,                            \
 784                                    fmt,                                        \
 785                                    ##__VA_ARGS__)
 786
 787 /**
 788  * KUNIT_EXPECT_NE() - An expectation that @left and @right are not equal.
 789  * @test: The test context object.
 790  * @left: an arbitrary expression that evaluates to a primitive C type.
 791  * @right: an arbitrary expression that evaluates to a primitive C type.
 792  *
 793  * Sets an expectation that the values that @left and @right evaluate to are not
 794  * equal. This is semantically equivalent to
 795  * KUNIT_EXPECT_TRUE(@test, (@left) != (@right)). See KUNIT_EXPECT_TRUE() for
 796  * more information.
 797  */
 798 #define KUNIT_EXPECT_NE(test, left, right) \
 799         KUNIT_EXPECT_NE_MSG(test, left, right, NULL)
 800
 801 #define KUNIT_EXPECT_NE_MSG(test, left, right, fmt, ...)                       \
 802         KUNIT_BINARY_INT_ASSERTION(test,                                       \
 803                                    KUNIT_EXPECTATION,                          \
 804                                    left, !=, right,                            \
 805                                    fmt,                                        \
 806                                     ##__VA_ARGS__)
 807
 808 /**
 809  * KUNIT_EXPECT_PTR_NE() - Expects that pointers @left and @right are not equal.
 810  * @test: The test context object.
 811  * @left: an arbitrary expression that evaluates to a pointer.
 812  * @right: an arbitrary expression that evaluates to a pointer.
 813  *
 814  * Sets an expectation that the values that @left and @right evaluate to are not
 815  * equal. This is semantically equivalent to
 816  * KUNIT_EXPECT_TRUE(@test, (@left) != (@right)). See KUNIT_EXPECT_TRUE() for
 817  * more information.
 818  */
 819 #define KUNIT_EXPECT_PTR_NE(test, left, right)                                 \
 820         KUNIT_EXPECT_PTR_NE_MSG(test, left, right, NULL)
 821
 822 #define KUNIT_EXPECT_PTR_NE_MSG(test, left, right, fmt, ...)                   \
 823         KUNIT_BINARY_PTR_ASSERTION(test,                                       \
 824                                    KUNIT_EXPECTATION,                          \
 825                                    left, !=, right,                            \
 826                                    fmt,                                        \
 827                                    ##__VA_ARGS__)
 828
 829 /**
 830  * KUNIT_EXPECT_LT() - An expectation that @left is less than @right.
 831  * @test: The test context object.
 832  * @left: an arbitrary expression that evaluates to a primitive C type.
 833  * @right: an arbitrary expression that evaluates to a primitive C type.
 834  *
 835  * Sets an expectation that the value that @left evaluates to is less than the
 836  * value that @right evaluates to. This is semantically equivalent to
 837  * KUNIT_EXPECT_TRUE(@test, (@left) < (@right)). See KUNIT_EXPECT_TRUE() for
 838  * more information.
 839  */
 840 #define KUNIT_EXPECT_LT(test, left, right) \
 841         KUNIT_EXPECT_LT_MSG(test, left, right, NULL)
 842
 843 #define KUNIT_EXPECT_LT_MSG(test, left, right, fmt, ...)                       \
 844         KUNIT_BINARY_INT_ASSERTION(test,                                       \
 845                                    KUNIT_EXPECTATION,                          \
 846                                    left, <, right,                             \
 847                                    fmt,                                        \
 848                                     ##__VA_ARGS__)
 849
 850 /**
 851  * KUNIT_EXPECT_LE() - Expects that @left is less than or equal to @right.
 852  * @test: The test context object.
 853  * @left: an arbitrary expression that evaluates to a primitive C type.
 854  * @right: an arbitrary expression that evaluates to a primitive C type.
 855  *
 856  * Sets an expectation that the value that @left evaluates to is less than or
 857  * equal to the value that @right evaluates to. Semantically this is equivalent
 858  * to KUNIT_EXPECT_TRUE(@test, (@left) <= (@right)). See KUNIT_EXPECT_TRUE() for
 859  * more information.
 860  */
 861 #define KUNIT_EXPECT_LE(test, left, right) \
 862         KUNIT_EXPECT_LE_MSG(test, left, right, NULL)
 863
 864 #define KUNIT_EXPECT_LE_MSG(test, left, right, fmt, ...)                       \
 865         KUNIT_BINARY_INT_ASSERTION(test,                                       \
 866                                    KUNIT_ASSERTION,                            \
 867                                    left, <=, right,                            \
 868                                    fmt,                                        \
 869                                     ##__VA_ARGS__)
 870
 871 /**
 872  * KUNIT_EXPECT_GT() - An expectation that @left is greater than @right.
 873  * @test: The test context object.
 874  * @left: an arbitrary expression that evaluates to a primitive C type.
 875  * @right: an arbitrary expression that evaluates to a primitive C type.
 876  *
 877  * Sets an expectation that the value that @left evaluates to is greater than
 878  * the value that @right evaluates to. This is semantically equivalent to
 879  * KUNIT_EXPECT_TRUE(@test, (@left) > (@right)). See KUNIT_EXPECT_TRUE() for
 880  * more information.
 881  */
 882 #define KUNIT_EXPECT_GT(test, left, right) \
 883         KUNIT_EXPECT_GT_MSG(test, left, right, NULL)
 884
 885 #define KUNIT_EXPECT_GT_MSG(test, left, right, fmt, ...)                       \
 886         KUNIT_BINARY_INT_ASSERTION(test,                                       \
 887                                    KUNIT_EXPECTATION,                          \
 888                                    left, >, right,                             \
 889                                    fmt,                                        \
 890                                     ##__VA_ARGS__)
 891
 892 /**
 893  * KUNIT_EXPECT_GE() - Expects that @left is greater than or equal to @right.
 894  * @test: The test context object.
 895  * @left: an arbitrary expression that evaluates to a primitive C type.
 896  * @right: an arbitrary expression that evaluates to a primitive C type.
 897  *
 898  * Sets an expectation that the value that @left evaluates to is greater than
 899  * the value that @right evaluates to. This is semantically equivalent to
 900  * KUNIT_EXPECT_TRUE(@test, (@left) >= (@right)). See KUNIT_EXPECT_TRUE() for
 901  * more information.
 902  */
 903 #define KUNIT_EXPECT_GE(test, left, right) \
 904         KUNIT_EXPECT_GE_MSG(test, left, right, NULL)
 905
 906 #define KUNIT_EXPECT_GE_MSG(test, left, right, fmt, ...)                       \
 907         KUNIT_BINARY_INT_ASSERTION(test,                                       \
 908                                    KUNIT_EXPECTATION,                          \
 909                                    left, >=, right,                            \
 910                                    fmt,                                        \
 911                                     ##__VA_ARGS__)
 912
 913 /**
 914  * KUNIT_EXPECT_STREQ() - Expects that strings @left and @right are equal.
 915  * @test: The test context object.
 916  * @left: an arbitrary expression that evaluates to a null terminated string.
 917  * @right: an arbitrary expression that evaluates to a null terminated string.
 918  *
 919  * Sets an expectation that the values that @left and @right evaluate to are
 920  * equal. This is semantically equivalent to
 921  * KUNIT_EXPECT_TRUE(@test, !strcmp((@left), (@right))). See KUNIT_EXPECT_TRUE()
 922  * for more information.
 923  */
 924 #define KUNIT_EXPECT_STREQ(test, left, right) \
 925         KUNIT_EXPECT_STREQ_MSG(test, left, right, NULL)
 926
 927 #define KUNIT_EXPECT_STREQ_MSG(test, left, right, fmt, ...)                    \
 928         KUNIT_BINARY_STR_ASSERTION(test,                                       \
 929                                    KUNIT_EXPECTATION,                          \
 930                                    left, ==, right,                            \
 931                                    fmt,                                        \
 932                                    ##__VA_ARGS__)
 933
 934 /**
 935  * KUNIT_EXPECT_STRNEQ() - Expects that strings @left and @right are not equal.
 936  * @test: The test context object.
 937  * @left: an arbitrary expression that evaluates to a null terminated string.
 938  * @right: an arbitrary expression that evaluates to a null terminated string.
 939  *
 940  * Sets an expectation that the values that @left and @right evaluate to are
 941  * not equal. This is semantically equivalent to
 942  * KUNIT_EXPECT_TRUE(@test, strcmp((@left), (@right))). See KUNIT_EXPECT_TRUE()
 943  * for more information.
 944  */
 945 #define KUNIT_EXPECT_STRNEQ(test, left, right) \
 946         KUNIT_EXPECT_STRNEQ_MSG(test, left, right, NULL)
 947
 948 #define KUNIT_EXPECT_STRNEQ_MSG(test, left, right, fmt, ...)                   \
 949         KUNIT_BINARY_STR_ASSERTION(test,                                       \
 950                                    KUNIT_EXPECTATION,                          \
 951                                    left, !=, right,                            \
 952                                    fmt,                                        \
 953                                    ##__VA_ARGS__)
 954
 955 /**
 956  * KUNIT_EXPECT_NULL() - Expects that @ptr is null.
 957  * @test: The test context object.
 958  * @ptr: an arbitrary pointer.
 959  *
 960  * Sets an expectation that the value that @ptr evaluates to is null. This is
 961  * semantically equivalent to KUNIT_EXPECT_PTR_EQ(@test, ptr, NULL).
 962  * See KUNIT_EXPECT_TRUE() for more information.
 963  */
 964 #define KUNIT_EXPECT_NULL(test, ptr)                                           \
 965         KUNIT_EXPECT_NULL_MSG(test,                                            \
 966                               ptr,                                             \
 967                               NULL)
 968
 969 #define KUNIT_EXPECT_NULL_MSG(test, ptr, fmt, ...)                             \
 970         KUNIT_BINARY_PTR_ASSERTION(test,                                       \
 971                                    KUNIT_EXPECTATION,                          \
 972                                    ptr, ==, NULL,                              \
 973                                    fmt,                                        \
 974                                    ##__VA_ARGS__)
 975
 976 /**
 977  * KUNIT_EXPECT_NOT_NULL() - Expects that @ptr is not null.
 978  * @test: The test context object.
 979  * @ptr: an arbitrary pointer.
 980  *
 981  * Sets an expectation that the value that @ptr evaluates to is not null. This
 982  * is semantically equivalent to KUNIT_EXPECT_PTR_NE(@test, ptr, NULL).
 983  * See KUNIT_EXPECT_TRUE() for more information.
 984  */
 985 #define KUNIT_EXPECT_NOT_NULL(test, ptr)                                       \
 986         KUNIT_EXPECT_NOT_NULL_MSG(test,                                        \
 987                                   ptr,                                         \
 988                                   NULL)
 989
 990 #define KUNIT_EXPECT_NOT_NULL_MSG(test, ptr, fmt, ...)                         \
 991         KUNIT_BINARY_PTR_ASSERTION(test,                                       \
 992                                    KUNIT_EXPECTATION,                          \
 993                                    ptr, !=, NULL,                              \
 994                                    fmt,                                        \
 995                                    ##__VA_ARGS__)
 996
 997 /**
 998  * KUNIT_EXPECT_NOT_ERR_OR_NULL() - Expects that @ptr is not null and not err.
 999  * @test: The test context object.
1000  * @ptr: an arbitrary pointer.
1001  *
1002  * Sets an expectation that the value that @ptr evaluates to is not null and not
1003  * an errno stored in a pointer. This is semantically equivalent to
1004  * KUNIT_EXPECT_TRUE(@test, !IS_ERR_OR_NULL(@ptr)). See KUNIT_EXPECT_TRUE() for
1005  * more information.
1006  */
1007 #define KUNIT_EXPECT_NOT_ERR_OR_NULL(test, ptr) \
1008         KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, ptr, NULL)
1009
1010 #define KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, ptr, fmt, ...)                  \
1011         KUNIT_PTR_NOT_ERR_OR_NULL_MSG_ASSERTION(test,                          \
1012                                                 KUNIT_EXPECTATION,             \
1013                                                 ptr,                           \
1014                                                 fmt,                           \
1015                                                 ##__VA_ARGS__)
1016
1017 #define KUNIT_ASSERT_FAILURE(test, fmt, ...) \
1018         KUNIT_FAIL_ASSERTION(test, KUNIT_ASSERTION, fmt, ##__VA_ARGS__)
1019
1020 /**
1021  * KUNIT_ASSERT_TRUE() - Sets an assertion that @condition is true.
1022  * @test: The test context object.
1023  * @condition: an arbitrary boolean expression. The test fails and aborts when
1024  * this does not evaluate to true.
1025  *
1026  * This and assertions of the form `KUNIT_ASSERT_*` will cause the test case to
1027  * fail *and immediately abort* when the specified condition is not met. Unlike
1028  * an expectation failure, it will prevent the test case from continuing to run;
1029  * this is otherwise known as an *assertion failure*.
1030  */
1031 #define KUNIT_ASSERT_TRUE(test, condition) \
1032         KUNIT_ASSERT_TRUE_MSG(test, condition, NULL)
1033
1034 #define KUNIT_ASSERT_TRUE_MSG(test, condition, fmt, ...)                       \
1035         KUNIT_TRUE_MSG_ASSERTION(test,                                         \
1036                                  KUNIT_ASSERTION,                              \
1037                                  condition,                                    \
1038                                  fmt,                                          \
1039                                  ##__VA_ARGS__)
1040
1041 /**
1042  * KUNIT_ASSERT_FALSE() - Sets an assertion that @condition is false.
1043  * @test: The test context object.
1044  * @condition: an arbitrary boolean expression.
1045  *
1046  * Sets an assertion that the value that @condition evaluates to is false. This
1047  * is the same as KUNIT_EXPECT_FALSE(), except it causes an assertion failure
1048  * (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
1049  */
1050 #define KUNIT_ASSERT_FALSE(test, condition) \
1051         KUNIT_ASSERT_FALSE_MSG(test, condition, NULL)
1052
1053 #define KUNIT_ASSERT_FALSE_MSG(test, condition, fmt, ...)                      \
1054         KUNIT_FALSE_MSG_ASSERTION(test,                                        \
1055                                   KUNIT_ASSERTION,                             \
1056                                   condition,                                   \
1057                                   fmt,                                         \
1058                                   ##__VA_ARGS__)
1059
1060 /**
1061  * KUNIT_ASSERT_EQ() - Sets an assertion that @left and @right are equal.
1062  * @test: The test context object.
1063  * @left: an arbitrary expression that evaluates to a primitive C type.
1064  * @right: an arbitrary expression that evaluates to a primitive C type.
1065  *
1066  * Sets an assertion that the values that @left and @right evaluate to are
1067  * equal. This is the same as KUNIT_EXPECT_EQ(), except it causes an assertion
1068  * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
1069  */
1070 #define KUNIT_ASSERT_EQ(test, left, right) \
1071         KUNIT_ASSERT_EQ_MSG(test, left, right, NULL)
1072
1073 #define KUNIT_ASSERT_EQ_MSG(test, left, right, fmt, ...)                       \
1074         KUNIT_BINARY_INT_ASSERTION(test,                                       \
1075                                    KUNIT_ASSERTION,                            \
1076                                    left, ==, right,                            \
1077                                    fmt,                                        \
1078                                     ##__VA_ARGS__)
1079
1080 /**
1081  * KUNIT_ASSERT_PTR_EQ() - Asserts that pointers @left and @right are equal.
1082  * @test: The test context object.
1083  * @left: an arbitrary expression that evaluates to a pointer.
1084  * @right: an arbitrary expression that evaluates to a pointer.
1085  *
1086  * Sets an assertion that the values that @left and @right evaluate to are
1087  * equal. This is the same as KUNIT_EXPECT_EQ(), except it causes an assertion
1088  * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
1089  */
1090 #define KUNIT_ASSERT_PTR_EQ(test, left, right) \
1091         KUNIT_ASSERT_PTR_EQ_MSG(test, left, right, NULL)
1092
1093 #define KUNIT_ASSERT_PTR_EQ_MSG(test, left, right, fmt, ...)                   \
1094         KUNIT_BINARY_PTR_ASSERTION(test,                                       \
1095                                    KUNIT_ASSERTION,                            \
1096                                    left, ==, right,                            \
1097                                    fmt,                                        \
1098                                    ##__VA_ARGS__)
1099
1100 /**
1101  * KUNIT_ASSERT_NE() - An assertion that @left and @right are not equal.
1102  * @test: The test context object.
1103  * @left: an arbitrary expression that evaluates to a primitive C type.
1104  * @right: an arbitrary expression that evaluates to a primitive C type.
1105  *
1106  * Sets an assertion that the values that @left and @right evaluate to are not
1107  * equal. This is the same as KUNIT_EXPECT_NE(), except it causes an assertion
1108  * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
1109  */
1110 #define KUNIT_ASSERT_NE(test, left, right) \
1111         KUNIT_ASSERT_NE_MSG(test, left, right, NULL)
1112
1113 #define KUNIT_ASSERT_NE_MSG(test, left, right, fmt, ...)                       \
1114         KUNIT_BINARY_INT_ASSERTION(test,                                       \
1115                                    KUNIT_ASSERTION,                            \
1116                                    left, !=, right,                            \
1117                                    fmt,                                        \
1118                                     ##__VA_ARGS__)
1119
1120 /**
1121  * KUNIT_ASSERT_PTR_NE() - Asserts that pointers @left and @right are not equal.
1122  * KUNIT_ASSERT_PTR_EQ() - Asserts that pointers @left and @right are equal.
1123  * @test: The test context object.
1124  * @left: an arbitrary expression that evaluates to a pointer.
1125  * @right: an arbitrary expression that evaluates to a pointer.
1126  *
1127  * Sets an assertion that the values that @left and @right evaluate to are not
1128  * equal. This is the same as KUNIT_EXPECT_NE(), except it causes an assertion
1129  * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
1130  */
1131 #define KUNIT_ASSERT_PTR_NE(test, left, right) \
1132         KUNIT_ASSERT_PTR_NE_MSG(test, left, right, NULL)
1133
1134 #define KUNIT_ASSERT_PTR_NE_MSG(test, left, right, fmt, ...)                   \
1135         KUNIT_BINARY_PTR_ASSERTION(test,                                       \
1136                                    KUNIT_ASSERTION,                            \
1137                                    left, !=, right,                            \
1138                                    fmt,                                        \
1139                                    ##__VA_ARGS__)
1140 /**
1141  * KUNIT_ASSERT_LT() - An assertion that @left is less than @right.
1142  * @test: The test context object.
1143  * @left: an arbitrary expression that evaluates to a primitive C type.
1144  * @right: an arbitrary expression that evaluates to a primitive C type.
1145  *
1146  * Sets an assertion that the value that @left evaluates to is less than the
1147  * value that @right evaluates to. This is the same as KUNIT_EXPECT_LT(), except
1148  * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion
1149  * is not met.
1150  */
1151 #define KUNIT_ASSERT_LT(test, left, right) \
1152         KUNIT_ASSERT_LT_MSG(test, left, right, NULL)
1153
1154 #define KUNIT_ASSERT_LT_MSG(test, left, right, fmt, ...)                       \
1155         KUNIT_BINARY_INT_ASSERTION(test,                                       \
1156                                    KUNIT_EXPECTATION,                          \
1157                                    left, <, right,                             \
1158                                    fmt,                                        \
1159                                     ##__VA_ARGS__)
1160 /**
1161  * KUNIT_ASSERT_LE() - An assertion that @left is less than or equal to @right.
1162  * @test: The test context object.
1163  * @left: an arbitrary expression that evaluates to a primitive C type.
1164  * @right: an arbitrary expression that evaluates to a primitive C type.
1165  *
1166  * Sets an assertion that the value that @left evaluates to is less than or
1167  * equal to the value that @right evaluates to. This is the same as
1168  * KUNIT_EXPECT_LE(), except it causes an assertion failure (see
1169  * KUNIT_ASSERT_TRUE()) when the assertion is not met.
1170  */
1171 #define KUNIT_ASSERT_LE(test, left, right) \
1172         KUNIT_ASSERT_LE_MSG(test, left, right, NULL)
1173
1174 #define KUNIT_ASSERT_LE_MSG(test, left, right, fmt, ...)                       \
1175         KUNIT_BINARY_INT_ASSERTION(test,                                       \
1176                                    KUNIT_ASSERTION,                            \
1177                                    left, <=, right,                            \
1178                                    fmt,                                        \
1179                                     ##__VA_ARGS__)
1180
1181 /**
1182  * KUNIT_ASSERT_GT() - An assertion that @left is greater than @right.
1183  * @test: The test context object.
1184  * @left: an arbitrary expression that evaluates to a primitive C type.
1185  * @right: an arbitrary expression that evaluates to a primitive C type.
1186  *
1187  * Sets an assertion that the value that @left evaluates to is greater than the
1188  * value that @right evaluates to. This is the same as KUNIT_EXPECT_GT(), except
1189  * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion
1190  * is not met.
1191  */
1192 #define KUNIT_ASSERT_GT(test, left, right) \
1193         KUNIT_ASSERT_GT_MSG(test, left, right, NULL)
1194
1195 #define KUNIT_ASSERT_GT_MSG(test, left, right, fmt, ...)                       \
1196         KUNIT_BINARY_INT_ASSERTION(test,                                       \
1197                                    KUNIT_EXPECTATION,                          \
1198                                    left, >, right,                             \
1199                                    fmt,                                        \
1200                                     ##__VA_ARGS__)
1201
1202 /**
1203  * KUNIT_ASSERT_GE() - Assertion that @left is greater than or equal to @right.
1204  * @test: The test context object.
1205  * @left: an arbitrary expression that evaluates to a primitive C type.
1206  * @right: an arbitrary expression that evaluates to a primitive C type.
1207  *
1208  * Sets an assertion that the value that @left evaluates to is greater than the
1209  * value that @right evaluates to. This is the same as KUNIT_EXPECT_GE(), except
1210  * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion
1211  * is not met.
1212  */
1213 #define KUNIT_ASSERT_GE(test, left, right) \
1214         KUNIT_ASSERT_GE_MSG(test, left, right, NULL)
1215
1216 #define KUNIT_ASSERT_GE_MSG(test, left, right, fmt, ...)                       \
1217         KUNIT_BINARY_INT_ASSERTION(test,                                       \
1218                                    KUNIT_ASSERTION,                            \
1219                                    left, >=, right,                            \
1220                                    fmt,                                        \
1221                                     ##__VA_ARGS__)
1222
1223 /**
1224  * KUNIT_ASSERT_STREQ() - An assertion that strings @left and @right are equal.
1225  * @test: The test context object.
1226  * @left: an arbitrary expression that evaluates to a null terminated string.
1227  * @right: an arbitrary expression that evaluates to a null terminated string.
1228  *
1229  * Sets an assertion that the values that @left and @right evaluate to are
1230  * equal. This is the same as KUNIT_EXPECT_STREQ(), except it causes an
1231  * assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
1232  */
1233 #define KUNIT_ASSERT_STREQ(test, left, right) \
1234         KUNIT_ASSERT_STREQ_MSG(test, left, right, NULL)
1235
1236 #define KUNIT_ASSERT_STREQ_MSG(test, left, right, fmt, ...)                    \
1237         KUNIT_BINARY_STR_ASSERTION(test,                                       \
1238                                    KUNIT_ASSERTION,                            \
1239                                    left, ==, right,                            \
1240                                    fmt,                                        \
1241                                    ##__VA_ARGS__)
1242
1243 /**
1244  * KUNIT_ASSERT_STRNEQ() - Expects that strings @left and @right are not equal.
1245  * @test: The test context object.
1246  * @left: an arbitrary expression that evaluates to a null terminated string.
1247  * @right: an arbitrary expression that evaluates to a null terminated string.
1248  *
1249  * Sets an expectation that the values that @left and @right evaluate to are
1250  * not equal. This is semantically equivalent to
1251  * KUNIT_ASSERT_TRUE(@test, strcmp((@left), (@right))). See KUNIT_ASSERT_TRUE()
1252  * for more information.
1253  */
1254 #define KUNIT_ASSERT_STRNEQ(test, left, right) \
1255         KUNIT_ASSERT_STRNEQ_MSG(test, left, right, NULL)
1256
1257 #define KUNIT_ASSERT_STRNEQ_MSG(test, left, right, fmt, ...)                   \
1258         KUNIT_BINARY_STR_ASSERTION(test,                                       \
1259                                    KUNIT_ASSERTION,                            \
1260                                    left, !=, right,                            \
1261                                    fmt,                                        \
1262                                    ##__VA_ARGS__)
1263
1264 /**
1265  * KUNIT_ASSERT_NULL() - Asserts that pointers @ptr is null.
1266  * @test: The test context object.
1267  * @ptr: an arbitrary pointer.
1268  *
1269  * Sets an assertion that the values that @ptr evaluates to is null. This is
1270  * the same as KUNIT_EXPECT_NULL(), except it causes an assertion
1271  * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
1272  */
1273 #define KUNIT_ASSERT_NULL(test, ptr) \
1274         KUNIT_ASSERT_NULL_MSG(test,                                            \
1275                               ptr,                                             \
1276                               NULL)
1277
1278 #define KUNIT_ASSERT_NULL_MSG(test, ptr, fmt, ...) \
1279         KUNIT_BINARY_PTR_ASSERTION(test,                                       \
1280                                    KUNIT_ASSERTION,                            \
1281                                    ptr, ==, NULL,                              \
1282                                    fmt,                                        \
1283                                    ##__VA_ARGS__)
1284
1285 /**
1286  * KUNIT_ASSERT_NOT_NULL() - Asserts that pointers @ptr is not null.
1287  * @test: The test context object.
1288  * @ptr: an arbitrary pointer.
1289  *
1290  * Sets an assertion that the values that @ptr evaluates to is not null. This
1291  * is the same as KUNIT_EXPECT_NOT_NULL(), except it causes an assertion
1292  * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
1293  */
1294 #define KUNIT_ASSERT_NOT_NULL(test, ptr) \
1295         KUNIT_ASSERT_NOT_NULL_MSG(test,                                        \
1296                                   ptr,                                         \
1297                                   NULL)
1298
1299 #define KUNIT_ASSERT_NOT_NULL_MSG(test, ptr, fmt, ...) \
1300         KUNIT_BINARY_PTR_ASSERTION(test,                                       \
1301                                    KUNIT_ASSERTION,                            \
1302                                    ptr, !=, NULL,                              \
1303                                    fmt,                                        \
1304                                    ##__VA_ARGS__)
1305
1306 /**
1307  * KUNIT_ASSERT_NOT_ERR_OR_NULL() - Assertion that @ptr is not null and not err.
1308  * @test: The test context object.
1309  * @ptr: an arbitrary pointer.
1310  *
1311  * Sets an assertion that the value that @ptr evaluates to is not null and not
1312  * an errno stored in a pointer. This is the same as
1313  * KUNIT_EXPECT_NOT_ERR_OR_NULL(), except it causes an assertion failure (see
1314  * KUNIT_ASSERT_TRUE()) when the assertion is not met.
1315  */
1316 #define KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr) \
1317         KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, NULL)
1318
1319 #define KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, fmt, ...)                  \
1320         KUNIT_PTR_NOT_ERR_OR_NULL_MSG_ASSERTION(test,                          \
1321                                                 KUNIT_ASSERTION,               \
1322                                                 ptr,                           \
1323                                                 fmt,                           \
1324                                                 ##__VA_ARGS__)
1325
1326 /**
1327  * KUNIT_ARRAY_PARAM() - Define test parameter generator from an array.
1328  * @name:  prefix for the test parameter generator function.
1329  * @array: array of test parameters.
1330  * @get_desc: function to convert param to description; NULL to use default
1331  *
1332  * Define function @name_gen_params which uses @array to generate parameters.
1333  */
1334 #define KUNIT_ARRAY_PARAM(name, array, get_desc)                                                \
1335         static const void *name##_gen_params(const void *prev, char *desc)                      \
1336         {                                                                                       \
1337                 typeof((array)[0]) *__next = prev ? ((typeof(__next)) prev) + 1 : (array);      \
1338                 if (__next - (array) < ARRAY_SIZE((array))) {                                   \
1339                         void (*__get_desc)(typeof(__next), char *) = get_desc;                  \
1340                         if (__get_desc)                                                         \
1341                                 __get_desc(__next, desc);                                       \
1342                         return __next;                                                          \
1343                 }                                                                               \
1344                 return NULL;                                                                    \
1345         }
1346
1347 // TODO([email protected]): consider eventually migrating users to explicitly
1348 // include resource.h themselves if they need it.
1349 #include <kunit/resource.h>
1350
1351 #endif /* _KUNIT_TEST_H */