/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-â
âvi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :viâ
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#include "libc/calls/calls.h"
#include "libc/dns/dns.h"
#include "libc/dns/ent.h"
#include "libc/dns/prototxt.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/testlib/testlib.h"

char testlib_enable_tmp_setup_teardown;

void SetUp() {
  int fd;
  const char *sample = "\
# skip comment string\n\
rspf	73	RSPF CPHB	\n\
ggp	    3	GGP		    ";
  ASSERT_NE(-1, (fd = creat("protocols", 0755)));
  ASSERT_NE(-1, write(fd, sample, strlen(sample)));
  ASSERT_NE(-1, close(fd));
}

TEST(LookupProtoByNumber, GetNameWhenNumberCorrect) {
  char name[16]; /* sample has only names of length 3-4 */
  strcpy(name, "");
  ASSERT_EQ(-1, /*non-existent number */
            LookupProtoByNumber(24, name, sizeof(name), "protocols"));
  ASSERT_EQ(-1, /* sizeof(name) insufficient, memccpy failure */
            LookupProtoByNumber(73, name, 1, "protocols"));
  ASSERT_STREQ(name, ""); /* cleaned up after memccpy failed */
  ASSERT_EQ(0,            /* works with valid number */
            LookupProtoByNumber(73, name, sizeof(name), "protocols"));
  ASSERT_STREQ(name, "rspf"); /* official name written */
}

TEST(LookupProtoByName, GetNumberWhenNameOrAlias) {
  char name[16]; /* sample has only names of length 3-4 */
  strcpy(name, "");
  ASSERT_EQ(-1, /* non-existent name or alias */
            LookupProtoByName("tcp", name, sizeof(name), "protocols"));
  ASSERT_EQ(-1, /* sizeof(name) insufficient, memccpy failure */
            LookupProtoByName("ggp", name, 1, "protocols"));
  ASSERT_STREQ(name, ""); /* cleaned up after memccpy failed */
  ASSERT_EQ(3,            /* works with valid name */
            LookupProtoByName("ggp", name, sizeof(name), "protocols"));
  ASSERT_STREQ(name, "ggp");
  ASSERT_EQ(73, /* works with valid alias */
            LookupProtoByName("CPHB", name, sizeof(name), "protocols"));
  ASSERT_STREQ(name, "rspf"); /* official name written */
}
