cosmopolitan/test/libc/dns/dnsquestion_test.c

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
│                                                                              │
│ Permission to use, copy, modify, and/or distribute this software for         │
│ any purpose with or without fee is hereby granted, provided that the         │
│ above copyright notice and this permission notice appear in all copies.      │
│                                                                              │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
│ PERFORMANCE OF THIS SOFTWARE.                                                │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/dns/dns.h"
#include "libc/dns/dnsquestion.h"
#include "libc/errno.h"
#include "libc/testlib/testlib.h"

TEST(serializednsquestion, test) {
  uint8_t *buf = tmalloc(1 + 3 + 1 + 3 + 1 + 4);
  char *name = tstrdup("foo.bar");
  struct DnsQuestion dq;
  dq.qname = name;
  dq.qtype = 0x0201;
  dq.qclass = 0x0102;
  EXPECT_EQ(1 + 3 + 1 + 3 + 1 + 4,
            serializednsquestion(buf, 1 + 3 + 1 + 3 + 1 + 4, dq));
  EXPECT_BINEQ(u"♥foo♥bar ☻☺☺☻", buf);
  tfree(name);
  tfree(buf);
}

TEST(serializednsquestion, testNoSpace) {
  uint8_t *buf = tmalloc(1 + 3 + 1 + 3 + 1 + 3);
  char *name = tstrdup("foo.bar");
  struct DnsQuestion dq;
  dq.qname = name;
  dq.qtype = 0x0201;
  dq.qclass = 0x0102;
  EXPECT_EQ(-1, serializednsquestion(buf, 1 + 3 + 1 + 3 + 1 + 3, dq));
  EXPECT_EQ(ENOSPC, errno);
  tfree(name);
  tfree(buf);
}