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sortix--sortix/regress/regress.c++
Jonas 'Sortie' Termansen 6454d4d215 Add regress(1).
2014-08-24 14:02:41 +02:00

336 lines
8.4 KiB
C++
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/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2014.
This program 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 3 of the License, or (at your option)
any later version.
This program 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
this program. If not, see <http://www.gnu.org/licenses/>.
regress.c++
Automatically invokes system tests.
*******************************************************************************/
#include <sys/wait.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
static const int VERBOSITY_SILENT = 0;
static const int VERBOSITY_NO_OUTPUT = 1;
static const int VERBOSITY_QUIET = 2;
static const int VERBOSITY_NORMAL = 3;
static const int VERBOSITY_VERBOSE = 4;
bool is_usable_terminal(int fd)
{
struct wincurpos wcp;
struct winsize ws;
return isatty(fd) &&
tcgetwinsize(fd, &ws) == 0 &&
tcgetwincurpos(fd, &wcp) == 0 &&
10 <= ws.ws_col;
}
void tenth_last_column()
{
struct wincurpos wcp;
struct winsize ws;
fflush(stdout);
tcgetwinsize(1, &ws);
tcgetwincurpos(1, &wcp);
if ( wcp.wcp_col - ws.ws_col < 10 )
printf("\n");
printf("\e[%zuG", ws.ws_col - 10);
fflush(stdout);
}
static void help(FILE* fp, const char* argv0)
{
fprintf(fp, "Usage: %s [OPTION]...\n", argv0);
fprintf(fp, "Automatically invoke system test cases.\n");
fprintf(fp, "\n");
fprintf(fp, "Mandatory arguments to long options are mandatory for short options too.\n");
fprintf(fp, " -b, --buffered buffer up test output in a pipe\n");
fprintf(fp, " -q --quiet output only failed tests\n");
fprintf(fp, " -s --silent don't output test results\n");
fprintf(fp, " --testdir=DIR use test programs in DIR\n");
fprintf(fp, " -u, --unbuffered send test output immediately to the terminal\n");
fprintf(fp, " -v --verbose verbose output\n");
fprintf(fp, " --help display this help and exit\n");
fprintf(fp, " --version output version information and exit\n");
}
static void version(FILE* fp, const char* argv0)
{
fprintf(fp, "%s (Sortix) %s\n", argv0, VERSIONSTR);
fprintf(fp, "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n");
fprintf(fp, "This is free software: you are free to change and redistribute it.\n");
fprintf(fp, "There is NO WARRANTY, to the extent permitted by law.\n");
}
static void compact_arguments(int* argc, char*** argv)
{
for ( int i = 0; i < *argc; i++ )
{
while ( i < *argc && !(*argv)[i] )
{
for ( int n = i; n < *argc; n++ )
(*argv)[n] = (*argv)[n+1];
(*argc)--;
}
}
}
bool get_option_variable(const char* option, char** varptr,
const char* arg, int argc, char** argv, int* ip,
const char* argv0)
{
size_t option_len = strlen(option);
if ( strncmp(option, arg, option_len) != 0 )
return false;
if ( arg[option_len] == '=' )
{
*varptr = strdup(arg + option_len + 1);
return true;
}
if ( arg[option_len] != '\0' )
return false;
if ( *ip + 1 == argc )
{
fprintf(stderr, "%s: expected operand after `%s'\n", argv0, option);
exit(1);
}
*varptr = strdup(argv[++*ip]), argv[*ip] = NULL;
return true;
}
static int no_dot_files(const struct dirent* entry)
{
return entry->d_name[0] != '.' ? 1 : 0;
}
#define GET_OPTION_VARIABLE(str, varptr) \
get_option_variable(str, varptr, arg, argc, argv, &i, argv0)
#define PIPE_BUFFER_SIZE 65536
static unsigned char pipe_buffer[PIPE_BUFFER_SIZE];
int main(int argc, char* argv[])
{
bool buffered = true;
#ifdef TESTDIR
char* testdir_path = strdup(TESTDIR);
#else
char* testdir_path = NULL;
#endif
int verbosity = VERBOSITY_NORMAL;
const char* argv0 = argv[0];
for ( int i = 1; i < argc; i++ )
{
const char* arg = argv[i];
if ( arg[0] != '-' || !arg[1] )
continue;
argv[i] = NULL;
if ( !strcmp(arg, "--") )
break;
if ( arg[1] != '-' )
{
while ( char c = *++arg ) switch ( c )
{
case 'b': buffered = true; break;
case 'q': verbosity--; break;
case 's': verbosity = VERBOSITY_SILENT; break;
case 'u': buffered = false; break;
case 'v': verbosity++; break;
default:
fprintf(stderr, "%s: unknown option -- '%c'\n", argv0, c);
help(stderr, argv0);
exit(1);
}
}
else if ( !strcmp(arg, "--help") )
help(stdout, argv0), exit(0);
else if ( !strcmp(arg, "--version") )
version(stdout, argv0), exit(0);
else if ( !strcmp(arg, "--buffered") )
buffered = true;
else if ( !strcmp(arg, "--quiet") )
verbosity--;
else if ( !strcmp(arg, "--silent") )
verbosity = VERBOSITY_SILENT;
else if ( GET_OPTION_VARIABLE("--testdir", &testdir_path) ) { }
else if ( !strcmp(arg, "--unbuffered") )
buffered = false;
else if ( !strcmp(arg, "--verbose") )
verbosity++;
else
{
fprintf(stderr, "%s: unknown option: %s\n", argv0, arg);
help(stderr, argv0);
exit(1);
}
}
compact_arguments(&argc, &argv);
if ( !testdir_path )
error(1, 0, "No test directory was specified and no default available");
struct dirent** entries;
int num_entries = scandir(testdir_path, &entries, no_dot_files, alphasort);
if ( num_entries < 0 )
error(2, errno, "scandir: `%s'", testdir_path);
int exit_status = 0;
bool use_terminal = is_usable_terminal(1);
for ( int i = 0; i < num_entries; i++ )
{
const struct dirent* entry = entries[i];
const char* test_name = entry->d_name;
char* test_path;
asprintf(&test_path, "%s/%s", testdir_path, test_name);
bool partial_begun_line = false;
if ( VERBOSITY_NORMAL <= verbosity )
{
if ( use_terminal )
{
printf("%s ", test_path);
tenth_last_column();
printf("[ ]");
if ( buffered )
partial_begun_line = true;
else
printf("\n");
fflush(stdout);
}
else if ( !buffered )
{
printf("%s [ ]\n", test_path);
fflush(stdout);
}
}
int pipe_fds[2];
if ( buffered && pipe(pipe_fds) < 0 )
error(1, errno, "pipe");
pid_t child_pid = fork();
if ( child_pid < 0 )
error(1, errno, "fork");
if ( !child_pid )
{
int dev_null_fd = open("/dev/null", O_RDWR);
if ( 0 < dev_null_fd )
dup2(dev_null_fd, 0);
if ( verbosity <= VERBOSITY_NO_OUTPUT )
{
dup2(dev_null_fd, 1);
dup2(dev_null_fd, 2);
}
else if ( buffered )
{
dup2(pipe_fds[1], 1);
dup2(pipe_fds[1], 2);
}
if ( buffered )
{
close(pipe_fds[0]);
close(pipe_fds[1]);
}
if ( 0 < dev_null_fd )
close(dev_null_fd);
char* child_argv[] = { test_path, NULL };
execv(child_argv[0], child_argv);
error(127, errno, "`%s'", test_path);
}
size_t bytes_read = 0;
if ( VERBOSITY_NO_OUTPUT < verbosity && buffered )
{
close(pipe_fds[1]);
while ( bytes_read < PIPE_BUFFER_SIZE )
{
ssize_t amount = read(pipe_fds[0],
pipe_buffer + bytes_read,
PIPE_BUFFER_SIZE - bytes_read);
if ( !amount )
break;
if ( amount < 0 )
break;
bytes_read += amount;
}
close(pipe_fds[0]);
}
int child_exit_code;
if ( waitpid(child_pid, &child_exit_code, 0) < 0 )
error(1, errno, "waitpid(%ji)", (intmax_t) child_pid);
bool success = WIFEXITED(child_exit_code) &&
WEXITSTATUS(child_exit_code) == 0;
if ( !success )
exit_status = 1;
if ( (VERBOSITY_NORMAL <= verbosity && success) ||
(VERBOSITY_NO_OUTPUT <= verbosity && !success ) )
{
if ( use_terminal )
{
if ( !partial_begun_line )
printf("%s ", test_path);
tenth_last_column();
printf("%s\n", success ?
"[\e[32mPASSED\e[m]" :
"[\e[31mFAILED\e[m]");
}
else
{
if ( success )
printf("%s [PASSED]\n", test_path);
else
printf("%s [FAILED]\n", test_path);
}
if ( VERBOSITY_NO_OUTPUT < verbosity && buffered )
fwrite(pipe_buffer, 1, bytes_read, stdout);
fflush(stdout);
}
}
for ( int i = 0; i < num_entries; i++ )
free(entries[i]);
free(entries);
return exit_status;
}
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