serenity/Tests/LibC/TestLibCNetdb.cpp

/*
 * Copyright (c) 2023, Marcus Nilsson <marcus.nilsson@genarp.com>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <LibTest/TestCase.h>
#include <arpa/inet.h>
#include <errno.h>
#include <netdb.h>

TEST_CASE(gethostbyname_r_should_return_erange_when_buffer_is_to_small)
{
    constexpr size_t buffer_size = 2;
    char buffer[buffer_size] = { 0 };
    int h_errnop;
    struct hostent ret;
    struct hostent* result;

    int rc = gethostbyname_r("127.0.0.1", &ret, buffer, buffer_size, &result, &h_errnop);
    EXPECT_EQ(rc, ERANGE);
}

TEST_CASE(gethostbyname_r_should_return_host_not_found)
{
    constexpr size_t buffer_size = 1024;
    char buffer[buffer_size] = { 0 };
    int h_errnop;
    struct hostent ret;
    struct hostent* result;

    int rc = gethostbyname_r("unknownhostthatdoesntexistandhopefullyneverwill.com", &ret, buffer, buffer_size, &result, &h_errnop);
    EXPECT(rc < 0);
    EXPECT_EQ(h_errnop, HOST_NOT_FOUND);
}

TEST_CASE(gethostbyname_r)
{
    constexpr size_t buffer_size = 1024;
    char buffer[buffer_size] = { 0 };
    int h_errnop;
    struct hostent ret;
    struct hostent* result;

    int rc = gethostbyname_r("google.com", &ret, buffer, buffer_size, &result, &h_errnop);
    EXPECT_EQ(rc, 0);
    EXPECT_EQ(h_errnop, 0);
    EXPECT_NE(result, nullptr);
    EXPECT_EQ(result->h_aliases[0], nullptr);
    EXPECT_EQ(result->h_addr_list[1], nullptr);
    EXPECT_EQ(result->h_addrtype, AF_INET);
}