1 // SPDX-License-Identifier: GPL-2.0
3 * KUnit API to save and access test attributes
5 * Copyright (C) 2023, Google LLC.
9 #include <kunit/test.h>
10 #include <kunit/attributes.h>
12 /* Options for printing attributes:
13 * PRINT_ALWAYS - attribute is printed for every test case and suite if set
14 * PRINT_SUITE - attribute is printed for every suite if set but not for test cases
15 * PRINT_NEVER - attribute is never printed
24 * struct kunit_attr - represents a test attribute and holds flexible
25 * helper functions to interact with attribute.
27 * @name: name of test attribute, eg. speed
28 * @get_attr: function to return attribute value given a test
29 * @to_string: function to return string representation of given
31 * @filter: function to indicate whether a given attribute value passes a
33 * @attr_default: default attribute value used during filtering
34 * @print: value of enum print_ops to indicate when to print attribute
38 void *(*get_attr)(void *test_or_suite, bool is_test);
39 const char *(*to_string)(void *attr, bool *to_free);
40 int (*filter)(void *attr, const char *input, int *err);
45 /* String Lists for enum Attributes */
47 static const char * const speed_str_list[] = {"unset", "very_slow", "slow", "normal"};
49 /* To String Methods */
51 static const char *attr_enum_to_string(void *attr, const char * const str_list[], bool *to_free)
53 long val = (long)attr;
61 static const char *attr_bool_to_string(void *attr, bool *to_free)
63 bool val = (bool)attr;
71 static const char *attr_speed_to_string(void *attr, bool *to_free)
73 return attr_enum_to_string(attr, speed_str_list, to_free);
76 static const char *attr_string_to_string(void *attr, bool *to_free)
84 static const char op_list[] = "<>!=";
87 * Returns whether the inputted integer value matches the filter given
88 * by the operation string and inputted integer.
90 static int int_filter(long val, const char *op, int input, int *err)
92 if (!strncmp(op, "<=", 2))
93 return (val <= input);
94 else if (!strncmp(op, ">=", 2))
95 return (val >= input);
96 else if (!strncmp(op, "!=", 2))
97 return (val != input);
98 else if (!strncmp(op, ">", 1))
100 else if (!strncmp(op, "<", 1))
101 return (val < input);
102 else if (!strncmp(op, "=", 1))
103 return (val == input);
105 pr_err("kunit executor: invalid filter operation: %s\n", op);
110 * Returns whether the inputted enum value "attr" matches the filter given
111 * by the input string. Note: the str_list includes the corresponding string
112 * list to the enum values.
114 static int attr_enum_filter(void *attr, const char *input, int *err,
115 const char * const str_list[], int max)
117 int i, j, input_int = -1;
118 long test_val = (long)attr;
119 const char *input_val = NULL;
121 for (i = 0; input[i]; i++) {
122 if (!strchr(op_list, input[i])) {
123 input_val = input + i;
130 pr_err("kunit executor: filter value not found: %s\n", input);
134 for (j = 0; j <= max; j++) {
135 if (!strcmp(input_val, str_list[j]))
141 pr_err("kunit executor: invalid filter input: %s\n", input);
145 return int_filter(test_val, input, input_int, err);
148 static int attr_speed_filter(void *attr, const char *input, int *err)
150 return attr_enum_filter(attr, input, err, speed_str_list, KUNIT_SPEED_MAX);
154 * Returns whether the inputted string value (attr) matches the filter given
155 * by the input string.
157 static int attr_string_filter(void *attr, const char *input, int *err)
161 if (!strncmp(input, "<", 1)) {
163 pr_err("kunit executor: invalid filter input: %s\n", input);
165 } else if (!strncmp(input, ">", 1)) {
167 pr_err("kunit executor: invalid filter input: %s\n", input);
169 } else if (!strncmp(input, "!=", 2)) {
170 return (strcmp(input + 2, str) != 0);
171 } else if (!strncmp(input, "=", 1)) {
172 return (strcmp(input + 1, str) == 0);
175 pr_err("kunit executor: invalid filter operation: %s\n", input);
179 static int attr_bool_filter(void *attr, const char *input, int *err)
181 int i, input_int = -1;
182 long val = (long)attr;
183 const char *input_str = NULL;
185 for (i = 0; input[i]; i++) {
186 if (!strchr(op_list, input[i])) {
187 input_str = input + i;
194 pr_err("kunit executor: filter value not found: %s\n", input);
198 if (!strcmp(input_str, "true"))
199 input_int = (int)true;
200 else if (!strcmp(input_str, "false"))
201 input_int = (int)false;
204 pr_err("kunit executor: invalid filter input: %s\n", input);
208 return int_filter(val, input, input_int, err);
211 /* Get Attribute Methods */
213 static void *attr_speed_get(void *test_or_suite, bool is_test)
215 struct kunit_suite *suite = is_test ? NULL : test_or_suite;
216 struct kunit_case *test = is_test ? test_or_suite : NULL;
219 return ((void *) test->attr.speed);
221 return ((void *) suite->attr.speed);
224 static void *attr_module_get(void *test_or_suite, bool is_test)
226 struct kunit_suite *suite = is_test ? NULL : test_or_suite;
227 struct kunit_case *test = is_test ? test_or_suite : NULL;
229 // Suites get their module attribute from their first test_case
231 return ((void *) test->module_name);
232 else if (kunit_suite_num_test_cases(suite) > 0)
233 return ((void *) suite->test_cases[0].module_name);
238 static void *attr_is_init_get(void *test_or_suite, bool is_test)
240 struct kunit_suite *suite = is_test ? NULL : test_or_suite;
241 struct kunit_case *test = is_test ? test_or_suite : NULL;
244 return ((void *) NULL);
246 return ((void *) suite->is_init);
249 /* List of all Test Attributes */
251 static struct kunit_attr kunit_attr_list[] = {
254 .get_attr = attr_speed_get,
255 .to_string = attr_speed_to_string,
256 .filter = attr_speed_filter,
257 .attr_default = (void *)KUNIT_SPEED_NORMAL,
258 .print = PRINT_ALWAYS,
262 .get_attr = attr_module_get,
263 .to_string = attr_string_to_string,
264 .filter = attr_string_filter,
265 .attr_default = (void *)"",
266 .print = PRINT_SUITE,
270 .get_attr = attr_is_init_get,
271 .to_string = attr_bool_to_string,
272 .filter = attr_bool_filter,
273 .attr_default = (void *)false,
274 .print = PRINT_SUITE,
278 /* Helper Functions to Access Attributes */
280 const char *kunit_attr_filter_name(struct kunit_attr_filter filter)
282 return filter.attr->name;
285 void kunit_print_attr(void *test_or_suite, bool is_test, unsigned int test_level)
288 bool to_free = false;
290 const char *attr_name, *attr_str;
291 struct kunit_suite *suite = is_test ? NULL : test_or_suite;
292 struct kunit_case *test = is_test ? test_or_suite : NULL;
294 for (i = 0; i < ARRAY_SIZE(kunit_attr_list); i++) {
295 if (kunit_attr_list[i].print == PRINT_NEVER ||
296 (test && kunit_attr_list[i].print == PRINT_SUITE))
298 attr = kunit_attr_list[i].get_attr(test_or_suite, is_test);
300 attr_name = kunit_attr_list[i].name;
301 attr_str = kunit_attr_list[i].to_string(attr, &to_free);
303 kunit_log(KERN_INFO, test, "%*s# %s.%s: %s",
304 KUNIT_INDENT_LEN * test_level, "", test->name,
305 attr_name, attr_str);
307 kunit_log(KERN_INFO, suite, "%*s# %s: %s",
308 KUNIT_INDENT_LEN * test_level, "", attr_name, attr_str);
311 /* Free to_string of attribute if needed */
318 /* Helper Functions to Filter Attributes */
320 int kunit_get_filter_count(char *input)
322 int i, comma_index = 0, count = 0;
324 for (i = 0; input[i]; i++) {
325 if (input[i] == ',') {
326 if ((i - comma_index) > 1)
331 if ((i - comma_index) > 0)
336 struct kunit_attr_filter kunit_next_attr_filter(char **filters, int *err)
338 struct kunit_attr_filter filter = {};
339 int i, j, comma_index = 0, new_start_index = 0;
340 int op_index = -1, attr_index = -1;
342 char *input = *filters;
344 /* Parse input until operation */
345 for (i = 0; input[i]; i++) {
346 if (op_index < 0 && strchr(op_list, input[i])) {
348 } else if (!comma_index && input[i] == ',') {
350 } else if (comma_index && input[i] != ' ') {
358 pr_err("kunit executor: filter operation not found: %s\n", input);
362 /* Temporarily set operator to \0 character. */
363 op = input[op_index];
364 input[op_index] = '\0';
366 /* Find associated kunit_attr object */
367 for (j = 0; j < ARRAY_SIZE(kunit_attr_list); j++) {
368 if (!strcmp(input, kunit_attr_list[j].name)) {
374 input[op_index] = op;
376 if (attr_index < 0) {
378 pr_err("kunit executor: attribute not found: %s\n", input);
380 filter.attr = &kunit_attr_list[attr_index];
383 if (comma_index > 0) {
384 input[comma_index] = '\0';
385 filter.input = input + op_index;
386 input = input + new_start_index;
388 filter.input = input + op_index;
397 struct kunit_suite *kunit_filter_attr_tests(const struct kunit_suite *const suite,
398 struct kunit_attr_filter filter, char *action, int *err)
401 struct kunit_case *filtered, *test_case;
402 struct kunit_suite *copy;
403 void *suite_val, *test_val;
404 bool suite_result, test_result, default_result, result;
406 /* Allocate memory for new copy of suite and list of test cases */
407 copy = kmemdup(suite, sizeof(*copy), GFP_KERNEL);
409 return ERR_PTR(-ENOMEM);
411 kunit_suite_for_each_test_case(suite, test_case) { n++; }
413 filtered = kcalloc(n + 1, sizeof(*filtered), GFP_KERNEL);
416 return ERR_PTR(-ENOMEM);
421 /* Save filtering result on default value */
422 default_result = filter.attr->filter(filter.attr->attr_default, filter.input, err);
426 /* Save suite attribute value and filtering result on that value */
427 suite_val = filter.attr->get_attr((void *)suite, false);
428 suite_result = filter.attr->filter(suite_val, filter.input, err);
432 /* For each test case, save test case if passes filtering. */
433 kunit_suite_for_each_test_case(suite, test_case) {
434 test_val = filter.attr->get_attr((void *) test_case, true);
435 test_result = filter.attr->filter(filter.attr->get_attr(test_case, true),
441 * If attribute value of test case is set, filter on that value.
442 * If not, filter on suite value if set. If not, filter on
449 } else if (suite_val) {
452 } else if (default_result) {
457 filtered[n++] = *test_case;
458 } else if (action && strcmp(action, "skip") == 0) {
459 test_case->status = KUNIT_SKIPPED;
460 filtered[n++] = *test_case;
465 if (n == 0 || *err) {
471 copy->test_cases = filtered;