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author | Andrew Bartlett <abartlet@samba.org> | 2011-06-24 16:26:23 +1000 |
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committer | Andrew Bartlett <abartlet@samba.org> | 2011-06-24 16:26:23 +1000 |
commit | 6da26870e0ae5acd6ff49a30ec2f6886b44d095e (patch) | |
tree | 850c71039563c16a5d563c47e7ba2ab645baf198 /lib/ccan/tally/test/run-total.c | |
parent | 6925a799d04c6fa59dd2ddef1f5510f9bb7d17d1 (diff) | |
parent | 2610c05b5b95cc7036b3d6dfb894c6cfbdb68483 (diff) | |
download | samba-6da26870e0ae5acd6ff49a30ec2f6886b44d095e.tar.gz samba-6da26870e0ae5acd6ff49a30ec2f6886b44d095e.tar.bz2 samba-6da26870e0ae5acd6ff49a30ec2f6886b44d095e.zip |
Merge 2610c05b5b95cc7036b3d6dfb894c6cfbdb68483 as Samba-4.0alpha16
Diffstat (limited to 'lib/ccan/tally/test/run-total.c')
-rw-r--r-- | lib/ccan/tally/test/run-total.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/lib/ccan/tally/test/run-total.c b/lib/ccan/tally/test/run-total.c new file mode 100644 index 0000000000..d7d73e58a5 --- /dev/null +++ b/lib/ccan/tally/test/run-total.c @@ -0,0 +1,56 @@ +#include <ccan/tally/tally.c> +#include <ccan/tap/tap.h> + +int main(void) +{ + struct tally *tally; + ssize_t total, overflow; + ssize_t min, max; + + max = (ssize_t)~(1ULL << (sizeof(max)*CHAR_BIT - 1)); + min = (ssize_t)(1ULL << (sizeof(max)*CHAR_BIT - 1)); + + plan_tests(15); + + /* Simple case. */ + tally = tally_new(0); + tally_add(tally, min); + ok1(tally_total(tally, NULL) == min); + ok1(tally_total(tally, &overflow) == min); + ok1(overflow == -1); + + /* Underflow. */ + tally_add(tally, min); + total = tally_total(tally, &overflow); + ok1(overflow == -1); + ok1((size_t)total == 0); + ok1(tally_total(tally, NULL) == min); + free(tally); + + /* Simple case. */ + tally = tally_new(0); + tally_add(tally, max); + ok1(tally_total(tally, NULL) == max); + ok1(tally_total(tally, &overflow) == max); + ok1(overflow == 0); + + /* Overflow into sign bit... */ + tally_add(tally, max); + total = tally_total(tally, &overflow); + ok1(overflow == 0); + ok1((size_t)total == (size_t)-2); + ok1(tally_total(tally, NULL) == max); + + /* Overflow into upper size_t. */ + tally_add(tally, max); + total = tally_total(tally, &overflow); + ok1(overflow == 1); + if (sizeof(size_t) == 4) + ok1((size_t)total == 0x7FFFFFFD); + else if (sizeof(size_t) == 8) + ok1((size_t)total == 0x7FFFFFFFFFFFFFFDULL); + ok1(tally_total(tally, NULL) == max); + free(tally); + + return exit_status(); +} |