Jakub Czapiga | 7a940df | 2021-02-15 12:07:10 +0100 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | |
| 3 | #include <stdlib.h> |
| 4 | #include <tests/test.h> |
| 5 | #include <commonlib/helpers.h> |
| 6 | #include <types.h> |
| 7 | #include <string.h> |
| 8 | |
| 9 | #define MEMSET_BUFFER_SZ (4 * KiB) |
| 10 | |
| 11 | struct memset_test_state { |
| 12 | u8 *base_buffer; |
| 13 | u8 *helper_buffer; |
| 14 | }; |
| 15 | |
| 16 | static int setup_test(void **state) |
| 17 | { |
| 18 | struct memset_test_state *s = malloc(sizeof(struct memset_test_state)); |
| 19 | |
| 20 | u8 *buf = malloc(MEMSET_BUFFER_SZ); |
| 21 | u8 *helper_buf = malloc(MEMSET_BUFFER_SZ); |
| 22 | if (!buf || !helper_buf) |
| 23 | goto error; |
| 24 | |
| 25 | s->base_buffer = buf; |
| 26 | s->helper_buffer = helper_buf; |
| 27 | *state = s; |
| 28 | |
| 29 | return 0; |
| 30 | |
| 31 | error: |
| 32 | free(buf); |
| 33 | free(helper_buf); |
| 34 | return -1; |
| 35 | } |
| 36 | |
| 37 | static int teardown_test(void **state) |
| 38 | { |
| 39 | struct memset_test_state *s = *state; |
| 40 | |
| 41 | if (s) { |
| 42 | free(s->base_buffer); |
| 43 | free(s->helper_buffer); |
| 44 | } |
| 45 | |
| 46 | free(s); |
| 47 | |
| 48 | return 0; |
| 49 | } |
| 50 | |
| 51 | static void test_memset_full_range(void **state) |
| 52 | { |
| 53 | struct memset_test_state *s = *state; |
| 54 | |
| 55 | for (int i = 0; i < MEMSET_BUFFER_SZ; ++i) |
| 56 | s->helper_buffer[i] = 0x42; |
| 57 | |
| 58 | memset(s->base_buffer, 0x42, MEMSET_BUFFER_SZ); |
| 59 | assert_memory_equal(s->base_buffer, s->helper_buffer, MEMSET_BUFFER_SZ); |
| 60 | } |
| 61 | |
| 62 | static void test_memset_subrange(void **state) |
| 63 | { |
| 64 | struct memset_test_state *s = *state; |
| 65 | int i = 0; |
| 66 | |
| 67 | for (; i < MEMSET_BUFFER_SZ / 2; ++i) |
| 68 | s->helper_buffer[i] = 0xEF; |
| 69 | for (; i < MEMSET_BUFFER_SZ; ++i) |
| 70 | s->helper_buffer[i] = 0xCD; |
| 71 | |
| 72 | /* Expect correct buffer subranges to be filled */ |
| 73 | memset(s->base_buffer, 0xEF, MEMSET_BUFFER_SZ / 2); |
| 74 | memset(s->base_buffer + MEMSET_BUFFER_SZ / 2, 0xCD, MEMSET_BUFFER_SZ / 2); |
| 75 | assert_memory_equal(s->base_buffer, s->helper_buffer, MEMSET_BUFFER_SZ); |
| 76 | } |
| 77 | |
| 78 | static void test_memset_zero_size(void **state) |
| 79 | { |
| 80 | struct memset_test_state *s = *state; |
| 81 | |
| 82 | for (int i = 0; i < MEMSET_BUFFER_SZ; ++i) { |
| 83 | s->base_buffer[i] = 0xFF; |
| 84 | s->helper_buffer[i] = 0xFF; |
| 85 | } |
| 86 | |
| 87 | /* Expect no change in buffer after calling memset with zero size */ |
| 88 | memset(s->base_buffer, 0xAA, 0); |
| 89 | assert_memory_equal(s->base_buffer, s->helper_buffer, MEMSET_BUFFER_SZ); |
| 90 | } |
| 91 | |
| 92 | static void test_memset_one_byte(void **state) |
| 93 | { |
| 94 | struct memset_test_state *s = *state; |
| 95 | |
| 96 | for (int i = 0; i < MEMSET_BUFFER_SZ; ++i) { |
| 97 | s->base_buffer[i] = 0x66; |
| 98 | s->helper_buffer[i] = 0x66; |
| 99 | } |
| 100 | |
| 101 | s->helper_buffer[MEMSET_BUFFER_SZ / 4] = 0xCC; |
| 102 | memset(&s->base_buffer[MEMSET_BUFFER_SZ / 4], 0xCC, 1); |
| 103 | assert_memory_equal(s->base_buffer, s->helper_buffer, MEMSET_BUFFER_SZ); |
| 104 | } |
| 105 | |
| 106 | int main(void) |
| 107 | { |
| 108 | const struct CMUnitTest tests[] = { |
| 109 | cmocka_unit_test_setup_teardown(test_memset_full_range, |
| 110 | setup_test, teardown_test), |
| 111 | cmocka_unit_test_setup_teardown(test_memset_subrange, |
| 112 | setup_test, teardown_test), |
| 113 | cmocka_unit_test_setup_teardown(test_memset_zero_size, |
| 114 | setup_test, teardown_test), |
| 115 | cmocka_unit_test_setup_teardown(test_memset_one_byte, |
| 116 | setup_test, teardown_test), |
| 117 | }; |
| 118 | |
| 119 | return cmocka_run_group_tests(tests, NULL, NULL); |
| 120 | } |