diff options
Diffstat (limited to 'test/bitbuf.test.c')
| -rw-r--r-- | test/bitbuf.test.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/test/bitbuf.test.c b/test/bitbuf.test.c index 324a7f6..554d3a2 100644 --- a/test/bitbuf.test.c +++ b/test/bitbuf.test.c @@ -15,15 +15,11 @@ static union { static struct bitbuf bb = {bb_buf.buf, 512, 512 * 8, 0, false, false, "test"}; TEST("The possible UB in bitbuf_appendbuf shouldn't trigger horrible bugs") { - char unalign[3] = {'X', 'X', 'X'}; - char _buf[32 + sizeof(bitbuf_cell)]; - char *buf = _buf; - if (bitbuf_align <= 1) { - // *shouldn't* happen + if (bitbuf_align <= 1) { // *shouldn't* happen fputs("what's going on with the alignment???\n", stderr); return false; } - // make sure the pointer is definitely misaligned + char _buf[32 + _Alignof(bitbuf_cell)], *buf = _buf; while (!((usize)buf % bitbuf_align)) ++buf; memcpy(buf, "Misaligned test buffer contents!", 32); @@ -31,4 +27,18 @@ TEST("The possible UB in bitbuf_appendbuf shouldn't trigger horrible bugs") { return !memcmp(bb.buf, buf, 32); } +TEST("Aligning to the next byte should work as intended") { + for (int i = 0; i < 65535; i += 8) { + bb.curbit = i; + bitbuf_roundup(&bb); + if (bb.curbit != i) return false; // don't round if already rounded + for (int j = i + 1; j < i + 8; ++j) { + bb.curbit = j; + bitbuf_roundup(&bb); + if (bb.curbit != i + 8) return false; + } + } + return true; +} + // vi: sw=4 ts=4 noet tw=80 cc=80 |