tests/lib/lib-test.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <lib.h>
   4 #include <tests/test.h>
   5
   6 void test_popcnt(void **state)
   7 {
   8         assert_int_equal(popcnt(0x0), 0);
   9         assert_int_equal(popcnt(0x10), 1);
  10         assert_int_equal(popcnt(0x10010010), 3);
  11         assert_int_equal(popcnt(0xffffffff), 32);
  12 }
  13
  14 void test_clz(void **state)
  15 {
  16         assert_int_equal(clz(0x0), 32);
  17         assert_int_equal(clz(0xf), 28);
  18         assert_int_equal(clz(0x80000000), 0);
  19         assert_int_equal(clz(0xffffffff), 0);
  20 }
  21
  22 void test_log2(void **state)
  23 {
  24         assert_int_equal(log2(0x0), -1);
  25         assert_int_equal(log2(0x1), 0);
  26         assert_int_equal(log2(0x5), 2);
  27         assert_int_equal(log2(0x80000000), 31);
  28         assert_int_equal(log2(0xffffffff), 31);
  29 }
  30
  31 void test_ffs(void **state)
  32 {
  33         assert_int_equal(__ffs(0x0), -1);
  34         assert_int_equal(__ffs(0x1), 0);
  35         assert_int_equal(__ffs(0x1010), 4);
  36         assert_int_equal(__ffs(0x10000000), 28);
  37         assert_int_equal(__ffs(0xffffffff), 0);
  38 }
  39
  40 void test_fls(void **state)
  41 {
  42         assert_int_equal(__fls(0x0), -1);
  43         assert_int_equal(__fls(0x1), 0);
  44         assert_int_equal(__fls(0x5), 2);
  45         assert_int_equal(__fls(0x80000000), 31);
  46         assert_int_equal(__fls(0xffffffff), 31);
  47 }
  48
  49 void test_log2_ceil(void **state)
  50 {
  51         assert_int_equal(log2_ceil(0x0), -1);
  52         assert_int_equal(log2_ceil(0x1), 0);
  53         assert_int_equal(log2_ceil(0x5), 3);
  54         assert_int_equal(log2_ceil(0x80000000), 31);
  55         assert_int_equal(log2_ceil(0xffffffff), 32);
  56 }
  57
  58 int main(void)
  59 {
  60         const struct CMUnitTest tests[] = {
  61                 cmocka_unit_test(test_popcnt),
  62                 cmocka_unit_test(test_clz),
  63                 cmocka_unit_test(test_log2),
  64                 cmocka_unit_test(test_ffs),
  65                 cmocka_unit_test(test_fls),
  66                 cmocka_unit_test(test_log2_ceil),
  67         };
  68
  69         return cb_run_group_tests(tests, NULL, NULL);
  70 }