/*

 * Copyright (C) 2010 Colin Watson.

 *

 * This file is part of libpipeline.

 *

 * libpipeline is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or (at

 * your option) any later version.

 *

 * libpipeline is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with libpipeline; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301

 * USA.

 */

#ifdef HAVE_CONFIG_H

#  include "config.h"

#endif

#include <string.h>

#include <sys/types.h>

#include <unistd.h>

#include <stdlib.h>

#include <signal.h>

#include <errno.h>

#include "error.h"

#include "common.h"

const char *program_name = "inspect";

START_TEST (test_inspect_command)

{

	pipecmd *cmd;

	char *str;

	cmd = pipecmd_new ("foo");

	str = pipecmd_tostring (cmd);

	fail_unless (!strcmp (str, "foo"));

	free (str);

	pipecmd_free (cmd);

	cmd = pipecmd_new_args ("foo", "bar", "baz quux", NULL);

	str = pipecmd_tostring (cmd);

	/* TODO: not ideal representation of commands with metacharacters */

	fail_unless (!strcmp (str, "foo bar baz quux"));

	free (str);

	pipecmd_free (cmd);

}

END_TEST

START_TEST (test_inspect_pipeline)

{

	pipeline *p;

	char *str;

	p = pipeline_new ();

	pipeline_command_args (p, "foo", "bar", NULL);

	pipeline_command_args (p, "grep", "baz", "quux", NULL);

	fail_unless (pipeline_get_ncommands (p) == 2);

	pipecmd_setenv (pipeline_get_command (p, 1), "KEY", "value");

	str = pipeline_tostring (p);

	fail_unless (!strcmp (str, "foo bar | KEY=value grep baz quux"));

	free (str);

	pipeline_free (p);

}

END_TEST

static void pid_helper (void *data PIPELINE_ATTR_UNUSED)

{

	struct sigaction sa;

	/* Get rid of check's SIGTERM handler. */

	memset (&sa, 0, sizeof sa);

	sa.sa_handler = SIG_DFL;

	sigemptyset (&sa.sa_mask);

	sa.sa_flags = 0;

	if (sigaction (SIGTERM, &sa, NULL) == -1)

		error (1, errno, "can't install SIGTERM handler");

	printf ("%ld\n", (long) getpid ());

	fflush (stdout);

	pause ();

}

START_TEST (test_inspect_pid)

{

	pipeline *p;

	pipecmd *cmd;

	const char *line;

	pid_t pid;

	p = pipeline_new ();

	cmd = pipecmd_new_function ("pid_helper", pid_helper, NULL, NULL);

	pipeline_command (p, cmd);

	pipeline_want_out (p, -1);

	pipeline_start (p);

	line = pipeline_readline (p);

	fail_unless (line != NULL);

	pid = (pid_t) atol (line);

	fail_unless (pid == pipeline_get_pid (p, 0), "pids match");

	/* Note that this test may hang if pipeline_get_pid does not work.

	 * We might be able to fix this by calling setsid at the start of

	 * the test and then killing the process group, but I'm not sure if

	 * that's sufficiently portable.

	 */

	if (pid == pipeline_get_pid (p, 0)) {

		int status;

		/* Suppress "Terminated" errors. */

		setenv ("PIPELINE_QUIET", "1", 1);

		kill (pid, SIGTERM);

		status = pipeline_wait (p);

		fail_unless (status == 128 + SIGTERM,

			     "pid_helper did not indicate SIGTERM");

	}

	pipeline_free (p);

}

END_TEST

Suite *inspect_suite (void)

{

	Suite *s = suite_create ("Inspect");

	TEST_CASE (s, inspect, command);

	TEST_CASE (s, inspect, pipeline);

	TEST_CASE (s, inspect, pid);

	return s;

}

MAIN (inspect)