utils strbuf: Handle nul-byte correctly.

[sysdb.git] / t / utils / strbuf_test.c

diff --git a/t/utils/strbuf_test.c b/t/utils/strbuf_test.c
index 9e96b984a2a764d5d322fc60e1065e2ee9cb2b6b..3a9a5e86e69319b12cb0a3a7384574f912fed6c6 100644 (file)
--- a/t/utils/strbuf_test.c
+++ b/t/utils/strbuf_test.c
@@ -207,6 +207,29 @@ START_TEST(test_sdb_strbuf_sprintf)
 }
 END_TEST
 
+START_TEST(test_incremental)
+{
+       ssize_t n;
+       size_t i;
+
+       sdb_strbuf_destroy(buf);
+       buf = sdb_strbuf_create(1024);
+
+       /* fill buffer one by one; leave room for nul-byte */
+       for (i = 0; i < 1023; ++i) {
+               n = sdb_strbuf_append(buf, ".");
+               fail_unless(n == 1, "sdb_strbuf_append() = %zi; expected: 1", n);
+       }
+
+       /* write another byte; this has to trigger a resize */
+       n = sdb_strbuf_append(buf, ".");
+       fail_unless(n == 1, "sdb_strbuf_append() = %zi; expected: 1", n);
+
+       n = (ssize_t)sdb_strbuf_len(buf);
+       fail_unless(n == 1024, "sdb_strbuf_len() = %zi; expectd: 1024", n);
+}
+END_TEST
+
 static struct {
        const char *input;
        size_t size;
@@ -448,6 +471,7 @@ util_strbuf_suite(void)
        tcase_add_test(tc, test_sdb_strbuf_create);
        tcase_add_test(tc, test_sdb_strbuf_append);
        tcase_add_test(tc, test_sdb_strbuf_sprintf);
+       tcase_add_test(tc, test_incremental);
        tcase_add_test(tc, test_sdb_strbuf_memcpy);
        tcase_add_test(tc, test_sdb_strbuf_memappend);
        tcase_add_test(tc, test_sdb_strbuf_chomp);