wrbuf_sha1_write(wr, msg, strlen(msg), 1);
if (!strcmp(wrbuf_cstr(wr), expect))
return 1;
wrbuf_sha1_write(wr, msg, strlen(msg), 1);
if (!strcmp(wrbuf_cstr(wr), expect))
return 1;
wrbuf_sha1_write(wr, buf, strlen(buf), 1);
#endif
wrbuf_rewind(wr);
wrbuf_sha1_write(wr, buf, strlen(buf), 1);
#endif
wrbuf_rewind(wr);
wrbuf_insert(wr, 5, "abc", 3);
YAZ_CHECK(!strcmp(wrbuf_cstr(wr), "1234"));
wrbuf_insert(wr, 5, "abc", 3);
YAZ_CHECK(!strcmp(wrbuf_cstr(wr), "1234"));