strbuf test: Further extended the incremental append test.

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

diff --git a/t/utils/strbuf_test.c b/t/utils/strbuf_test.c
index 9e96b984a2a764d5d322fc60e1065e2ee9cb2b6b..d76c0f20adcdb9556ae8fa6910ea310cdf661ffa 100644 (file)
--- a/t/utils/strbuf_test.c
+++ b/t/utils/strbuf_test.c
@@ -207,6 +207,36 @@ 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);
+
+       /* write more bytes; this should trigger at least one more resize but
+        * that's an implementation detail */
+       for (i = 0; i < 1024; ++i) {
+               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 == 2048, "sdb_strbuf_len() = %zi; expectd: 2048", n);
+}
+END_TEST
+
 static struct {
        const char *input;
        size_t size;
@@ -448,6 +478,7 @@ 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);