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Test some formerly untested prepend cases of evbuffer. Now evbuffer coverage is over 80 percent.

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svn:r1108
This commit is contained in:
Nick Mathewson 2009-02-10 19:39:03 +00:00
parent 9e3e7b360d
commit e7fd1034cf
1 changed files with 58 additions and 0 deletions
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58
test/regress_buffer.c
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@ -677,6 +677,63 @@ end:
evbuffer_free(buf2);
}
/* Some cases that we didn't get in test_evbuffer() above, for more coverage. */
static void
test_evbuffer_prepend(void *ptr)
{
struct evbuffer *buf1 = NULL, *buf2 = NULL;
char tmp[128];
int n;
buf1 = evbuffer_new();
tt_assert(buf1);
evbuffer_add(buf1, "This string has 29 characters", 29);
/* Case 1: Prepend goes entirely in new chunk. */
evbuffer_prepend(buf1, "Short.", 6);
evbuffer_validate(buf1);
/* Case 2: prepend goes entirely in first chunk. */
evbuffer_drain(buf1, 6+11);
evbuffer_prepend(buf1, "it", 2);
evbuffer_validate(buf1);
tt_assert(!memcmp(buf1->first->buffer+buf1->first->misalign,
"it has", 6));
/* Case 3: prepend is split over multiple chunks. */
evbuffer_prepend(buf1, "It is no longer true to say ", 28);
evbuffer_validate(buf1);
n = evbuffer_remove(buf1, tmp, sizeof(tmp)-1);
tmp[n]='\0';
tt_str_op(tmp,==,"It is no longer true to say it has 29 characters");
buf2 = evbuffer_new();
tt_assert(buf2);
/* Case 4: prepend a buffer to an empty buffer. */
n = 999;
evbuffer_add_printf(buf1, "Here is string %d. ", n++);
evbuffer_prepend_buffer(buf2, buf1);
evbuffer_validate(buf2);
/* Case 5: prepend a buffer to a nonempty buffer. */
evbuffer_add_printf(buf1, "Here is string %d. ", n++);
evbuffer_prepend_buffer(buf2, buf1);
evbuffer_validate(buf2);
n = evbuffer_remove(buf2, tmp, sizeof(tmp)-1);
tmp[n]='\0';
tt_str_op(tmp,==,"Here is string 1000. Here is string 999. ");
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 },
@ -685,6 +742,7 @@ struct testcase_t evbuffer_testcases[] = {
{ "find", test_evbuffer_find, 0, NULL, NULL },
{ "callbacks", test_evbuffer_callbacks, 0, NULL, NULL },
{ "add_reference", test_evbuffer_add_reference, 0, NULL, NULL },
{ "prepend", test_evbuffer_prepend, 0, NULL, NULL },
END_OF_TESTCASES
};