/*-
 * Copyright (c) 2017 Enji Cooper <ngie@freebsd.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/param.h>
#include <sys/sbuf.h>

#include <atf-c.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "sbuf_test_common.h"

static char test_string[] = "this is a test string";

#define MESSAGE_FORMAT    "message: %s\n"
#define MESSAGE_SEPARATOR ';'

static int
sbuf_vprintf_helper(struct sbuf *sb, const char *restrict format, ...)
{
        va_list ap;
        int rc;

        va_start(ap, format);

        rc = sbuf_vprintf(sb, format, ap);

        va_end(ap);

        return (rc);
}

ATF_TC_WITHOUT_HEAD(sbuf_printf_drain_null_test);
ATF_TC_BODY(sbuf_printf_drain_null_test, tc)
{
        struct sbuf *sb;
        char buf[2];
        pid_t child_proc;

        sb = sbuf_new(NULL, buf, sizeof(buf), SBUF_FIXEDLEN);
        ATF_REQUIRE_MSG(sb != NULL, "sbuf_new_auto failed: %s",
            strerror(errno));

        child_proc = atf_utils_fork();
        if (child_proc == 0) {
                sbuf_set_drain(sb, sbuf_printf_drain, NULL);

                ATF_REQUIRE_EQ_MSG(0, sbuf_cat(sb, test_string),
                    "sbuf_cat failed");

                ATF_CHECK_EQ(0, sbuf_finish(sb));
                exit(0);
        }
        atf_utils_wait(child_proc, 0, test_string, "");

        sbuf_delete(sb);
}

ATF_TC_WITHOUT_HEAD(sbuf_printf_drain_test);
ATF_TC_BODY(sbuf_printf_drain_test, tc)
{
        struct sbuf *sb;
        char buf[2];
        pid_t child_proc;
        size_t cnt = 0;

        sb = sbuf_new(NULL, buf, sizeof(buf), SBUF_FIXEDLEN);
        ATF_REQUIRE_MSG(sb != NULL, "sbuf_new_auto failed: %s",
            strerror(errno));

        child_proc = atf_utils_fork();
        if (child_proc == 0) {
                sbuf_set_drain(sb, sbuf_printf_drain, &cnt);

                ATF_REQUIRE_EQ_MSG(0, sbuf_cat(sb, test_string),
                    "sbuf_cat failed");

                ATF_CHECK_EQ(0, sbuf_finish(sb));
                ATF_CHECK_EQ(strlen(test_string), cnt);
                exit(0);
        }
        atf_utils_wait(child_proc, 0, test_string, "");

        sbuf_delete(sb);
}

ATF_TC_WITHOUT_HEAD(sbuf_printf_test);
ATF_TC_BODY(sbuf_printf_test, tc)
{
        struct sbuf *sb;
        char *test_string_tmp;

        asprintf(&test_string_tmp, "%s%c" MESSAGE_FORMAT, test_string,
            MESSAGE_SEPARATOR, test_string);
        ATF_REQUIRE_MSG(test_string_tmp != NULL, "asprintf failed");

        sb = sbuf_new_auto();
        ATF_REQUIRE_MSG(sb != NULL, "sbuf_new_auto failed: %s",
            strerror(errno));

        ATF_REQUIRE_MSG(sbuf_cat(sb, test_string) == 0, "sbuf_cat failed");
        ATF_REQUIRE_MSG(sbuf_putc(sb, MESSAGE_SEPARATOR) == 0,
            "sbuf_putc failed");

        ATF_REQUIRE_MSG(sbuf_printf(sb, MESSAGE_FORMAT, test_string) == 0,
            "sbuf_printf failed");

        ATF_REQUIRE_MSG(sbuf_finish(sb) == 0, "sbuf_finish failed: %s",
            strerror(errno));

        ATF_REQUIRE_STREQ_MSG(sbuf_data(sb), test_string_tmp,
            "sbuf (\"%s\") != test string (\"%s\")", sbuf_data(sb),
            test_string_tmp);

        sbuf_delete(sb);

        free(test_string_tmp);
}

ATF_TC_WITHOUT_HEAD(sbuf_putbuf_test);
ATF_TC_BODY(sbuf_putbuf_test, tc)
{
        struct sbuf *sb;
        pid_t child_proc;

        sb = sbuf_new_auto();
        ATF_REQUIRE_MSG(sb != NULL, "sbuf_new_auto failed: %s",
            strerror(errno));

        ATF_REQUIRE_MSG(sbuf_cat(sb, test_string) == 0, "sbuf_cat failed");

        child_proc = atf_utils_fork();
        if (child_proc == 0) {
                ATF_CHECK_EQ(0, sbuf_finish(sb));
                sbuf_putbuf(sb);
                exit(0);
        }
        atf_utils_wait(child_proc, 0, test_string, "");

        ATF_REQUIRE_MSG(sbuf_finish(sb) == 0, "sbuf_finish failed: %s",
            strerror(errno));

        sbuf_delete(sb);
}

ATF_TC_WITHOUT_HEAD(sbuf_vprintf_test);
ATF_TC_BODY(sbuf_vprintf_test, tc)
{
        struct sbuf *sb;
        char *test_string_tmp;
        int rc;

        asprintf(&test_string_tmp, "%s%c" MESSAGE_FORMAT, test_string,
            MESSAGE_SEPARATOR, test_string);
        ATF_REQUIRE_MSG(test_string_tmp != NULL, "asprintf failed");

        sb = sbuf_new_auto();
        ATF_REQUIRE_MSG(sb != NULL, "sbuf_new_auto failed: %s",
            strerror(errno));

        ATF_REQUIRE_MSG(sbuf_cat(sb, test_string) == 0, "sbuf_cat failed");
        ATF_REQUIRE_MSG(sbuf_putc(sb, MESSAGE_SEPARATOR) == 0,
            "sbuf_putc failed");

        rc = sbuf_vprintf_helper(sb, MESSAGE_FORMAT, test_string);
        ATF_REQUIRE_MSG(rc == 0, "sbuf_vprintf failed");

        ATF_REQUIRE_MSG(sbuf_finish(sb) == 0, "sbuf_finish failed: %s",
            strerror(errno));

        ATF_REQUIRE_STREQ_MSG(sbuf_data(sb), test_string_tmp,
            "sbuf (\"%s\") != test string (\"%s\")", sbuf_data(sb),
            test_string_tmp);

        sbuf_delete(sb);
}

ATF_TP_ADD_TCS(tp)
{
        ATF_TP_ADD_TC(tp, sbuf_printf_drain_null_test);
        ATF_TP_ADD_TC(tp, sbuf_printf_drain_test);
        ATF_TP_ADD_TC(tp, sbuf_printf_test);
        ATF_TP_ADD_TC(tp, sbuf_putbuf_test);
        ATF_TP_ADD_TC(tp, sbuf_vprintf_test);

        return (atf_no_error());
}