diff options
Diffstat (limited to 'tests/check_public.c')
| -rw-r--r-- | tests/check_public.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/tests/check_public.c b/tests/check_public.c index e2ebba6..2094bfe 100644 --- a/tests/check_public.c +++ b/tests/check_public.c @@ -3,6 +3,7 @@ #include <stdlib.h> #include "check_suites.h" #include "xcb.h" +#include "xcbext.h" /* xcb_parse_display tests {{{ */ @@ -180,6 +181,28 @@ END_TEST /* }}} */ +static void popcount_eq(uint32_t bits, int count) +{ + fail_unless(xcb_popcount(bits) == count, "unexpected popcount(%08x) != %d", bits, count); +} + +START_TEST(popcount) +{ + uint32_t mask; + int count; + + for (mask = 0xffffffff, count = 32; count >= 0; mask >>= 1, --count) { + popcount_eq(mask, count); + } + for (mask = 0x80000000; mask; mask >>= 1) { + popcount_eq(mask, 1); + } + for (mask = 0x80000000; mask > 1; mask >>= 1) { + popcount_eq(mask | 1, 2); + } +} +END_TEST + Suite *public_suite(void) { Suite *s = suite_create("Public API"); @@ -190,5 +213,6 @@ Suite *public_suite(void) suite_add_test(s, parse_display_ipv6, "xcb_parse_display ipv6"); suite_add_test(s, parse_display_decnet, "xcb_parse_display decnet"); suite_add_test(s, parse_display_negative, "xcb_parse_display negative"); + suite_add_test(s, popcount, "xcb_popcount"); return s; } |