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More unit tests for #11648-related stuff

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These are actually tests for #311.  It appears to me that we didn't
fix #311 properly when we thought we did in 475eb5d6; instead, the
real fix was 05eff35ac6, a few minutes earlier.
This commit is contained in:
Nick Mathewson 2014-05-08 12:41:01 -04:00
parent 4eb3018f94
commit 891d239e01
1 changed files with 79 additions and 4 deletions
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83
src/test/test_buffers.c
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@ -598,7 +598,7 @@ test_buffer_time_tracking(void *arg)
}
static void
test_buffers_zlib(void *arg)
test_buffers_zlib_impl(int finalize_with_nil)
{
char *msg = NULL;
char *contents = NULL;
@ -606,8 +606,7 @@ test_buffers_zlib(void *arg)
buf_t *buf = NULL;
tor_zlib_state_t *zlib_state = NULL;
size_t out_len, in_len;
(void) arg;
int done;
buf = buf_new_with_capacity(128); /* will round up */
zlib_state = tor_zlib_new(1, ZLIB_METHOD);
@ -617,7 +616,11 @@ test_buffers_zlib(void *arg)
tt_int_op(write_to_buf_zlib(buf, zlib_state, msg, 128, 0), ==, 0);
tt_int_op(write_to_buf_zlib(buf, zlib_state, msg+128, 128, 0), ==, 0);
tt_int_op(write_to_buf_zlib(buf, zlib_state, msg+256, 256, 0), ==, 0);
tt_int_op(write_to_buf_zlib(buf, zlib_state, "all done", 9, 1), ==, 0);
done = !finalize_with_nil;
tt_int_op(write_to_buf_zlib(buf, zlib_state, "all done", 9, done), ==, 0);
if (finalize_with_nil) {
tt_int_op(write_to_buf_zlib(buf, zlib_state, "", 0, 1), ==, 0);
}
in_len = buf_datalen(buf);
contents = tor_malloc(in_len);
@ -644,6 +647,75 @@ test_buffers_zlib(void *arg)
tor_free(msg);
}
static void
test_buffers_zlib(void *arg)
{
(void) arg;
test_buffers_zlib_impl(0);
}
static void
test_buffers_zlib_fin_with_nil(void *arg)
{
(void) arg;
test_buffers_zlib_impl(1);
}
static void
test_buffers_zlib_fin_at_chunk_end(void *arg)
{
(void) arg;
char *msg = NULL;
char *contents = NULL;
char *expanded = NULL;
buf_t *buf = NULL;
tor_zlib_state_t *zlib_state = NULL;
size_t out_len, in_len;
size_t sz, headerjunk;
buf = buf_new_with_capacity(128); /* will round up */
sz = buf_get_default_chunk_size(buf);
msg = tor_malloc_zero(sz);
write_to_buf(msg, 1, buf);
tt_assert(buf->head);
/* Fill up the chunk so the zlib stuff won't fit in one chunk. */
tt_uint_op(buf->head->memlen, <, sz);
headerjunk = buf->head->memlen - 7;
write_to_buf(msg, headerjunk-1, buf);
tt_uint_op(buf->head->datalen, ==, headerjunk);
printf("<%u>\n", (unsigned)buf_datalen(buf));
tt_uint_op(buf_datalen(buf), ==, headerjunk);
/* Write an empty string, with finalization on. */
zlib_state = tor_zlib_new(1, ZLIB_METHOD);
tt_int_op(write_to_buf_zlib(buf, zlib_state, "", 0, 1), ==, 0);
printf("<%u>\n", (unsigned)buf_datalen(buf));
in_len = buf_datalen(buf);
contents = tor_malloc(in_len);
tt_int_op(fetch_from_buf(contents, in_len, buf), ==, 0);
tt_uint_op(in_len, >, headerjunk);
tt_int_op(0, ==, tor_gzip_uncompress(&expanded, &out_len,
contents + headerjunk, in_len - headerjunk,
ZLIB_METHOD, 1,
LOG_WARN));
tt_int_op(out_len, ==, 0);
tt_assert(expanded);
done:
buf_free(buf);
tor_zlib_free(zlib_state);
tor_free(contents);
tor_free(expanded);
tor_free(msg);
}
struct testcase_t buffer_tests[] = {
{ "basic", test_buffers_basic, TT_FORK, NULL, NULL },
{ "copy", test_buffer_copy, TT_FORK, NULL, NULL },
@ -653,6 +725,9 @@ struct testcase_t buffer_tests[] = {
NULL, NULL },
{ "time_tracking", test_buffer_time_tracking, TT_FORK, NULL, NULL },
{ "zlib", test_buffers_zlib, TT_FORK, NULL, NULL },
{ "zlib_fin_with_nil", test_buffers_zlib_fin_with_nil, TT_FORK, NULL, NULL },
{ "zlib_fin_at_chunk_end", test_buffers_zlib_fin_at_chunk_end, TT_FORK,
NULL, NULL},
END_OF_TESTCASES
};