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More unit tests for evbuffer_add_reference to make sure that certain interleaved data patterns work; that free invokes callback; that callbacks are not invoked too early or later; etc.

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svn:r1107
This commit is contained in:
Nick Mathewson 2009-02-10 19:38:54 +00:00
parent 98b7046b97
commit 9e3e7b360d
1 changed files with 87 additions and 7 deletions
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80
test/regress_buffer.c
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@ -598,6 +598,85 @@ test_evbuffer_callbacks(void *ptr)
evbuffer_free(buf_out2);
}
static int ref_done_cb_called_count = 0;
static void *ref_done_cb_called_with = NULL;
static void ref_done_cb(void *data)
{
++ref_done_cb_called_count;
ref_done_cb_called_with = data;
}
static void
test_evbuffer_add_reference(void *ptr)
{
const char chunk1[] = "If you have found the answer to such a problem";
const char chunk2[] = "you ought to write it up for publication";
/* -- Knuth's "Notes on the Exercises" from TAOCP */
char tmp[16];
size_t len1 = strlen(chunk1), len2=strlen(chunk2);
struct evbuffer *buf1 = NULL, *buf2 = NULL;
buf1 = evbuffer_new();
tt_assert(buf1);
evbuffer_add_reference(buf1, chunk1, len1, ref_done_cb, (void*)111);
evbuffer_add(buf1, ", ", 2);
evbuffer_add_reference(buf1, chunk2, len2, ref_done_cb, (void*)222);
tt_int_op(evbuffer_get_length(buf1), ==, len1+len2+2);
/* Make sure we can drain a little from a reference. */
tt_int_op(evbuffer_remove(buf1, tmp, 6), ==, 6);
tt_int_op(memcmp(tmp, "If you", 6), ==, 0);
tt_int_op(evbuffer_remove(buf1, tmp, 5), ==, 5);
tt_int_op(memcmp(tmp, " have", 5), ==, 0);
/* Make sure that prepending does not meddle with immutable data */
tt_int_op(evbuffer_prepend(buf1, "I have ", 7), ==, 0);
tt_int_op(memcmp(chunk1, "If you", 6), ==, 0);
/* Make sure that when the chunk is over, the callback is invoked. */
evbuffer_drain(buf1, 7); /* Remove prepended stuff. */
evbuffer_drain(buf1, len1-11-1); /* remove all but one byte of chunk1 */
tt_int_op(ref_done_cb_called_count, ==, 0);
evbuffer_remove(buf1, tmp, 1);
tt_int_op(tmp[0], ==, 'm');
tt_assert(ref_done_cb_called_with == (void*)111);
tt_int_op(ref_done_cb_called_count, ==, 1);
/* Drain some of the remaining chunk, then add it to another buffer */
evbuffer_drain(buf1, 6); /* Remove the ", you ". */
buf2 = evbuffer_new();
tt_assert(buf2);
tt_int_op(ref_done_cb_called_count, ==, 1);
evbuffer_add(buf2, "I ", 2);
evbuffer_add_buffer(buf2, buf1);
tt_int_op(ref_done_cb_called_count, ==, 1);
evbuffer_remove(buf2, tmp, 16);
tt_int_op(memcmp("I ought to write", tmp, 16), ==, 0);
evbuffer_drain(buf2, evbuffer_get_length(buf2));
tt_int_op(ref_done_cb_called_count, ==, 2);
tt_assert(ref_done_cb_called_with == (void*)222);
/* Now add more stuff to buf1 and make sure that it gets removed on
* free. */
evbuffer_add(buf1, "You shake and shake the ", 24);
evbuffer_add_reference(buf1, "ketchup bottle", 14, ref_done_cb,
(void*)3333);
evbuffer_add(buf1, ". Nothing comes and then a lot'll.", 42);
evbuffer_free(buf1);
buf1 = NULL;
tt_int_op(ref_done_cb_called_count, ==, 3);
tt_assert(ref_done_cb_called_with == (void*)3333);
end:
if (buf1)
evbuffer_free(buf1);
if (buf2)
evbuffer_free(buf2);
}
struct testcase_t evbuffer_testcases[] = {
{ "evbuffer", test_evbuffer, 0, NULL, NULL },
{ "reference", test_evbuffer_reference, 0, NULL, NULL },
@ -605,6 +684,7 @@ struct testcase_t evbuffer_testcases[] = {
{ "readln", test_evbuffer_readln, 0, NULL, NULL },
{ "find", test_evbuffer_find, 0, NULL, NULL },
{ "callbacks", test_evbuffer_callbacks, 0, NULL, NULL },
{ "add_reference", test_evbuffer_add_reference, 0, NULL, NULL },
END_OF_TESTCASES
};