bird/test/birdtest.c
Ondrej Zajicek (work) bdf2e55d98 Add mock-up function for unit tests
They failed without it.
2019-06-12 18:02:01 +02:00

503 lines
11 KiB
C

/*
* BIRD -- Unit Test Framework (BIRD Test)
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include "test/birdtest.h"
#include "lib/string.h"
#ifdef HAVE_EXECINFO_H
#include <execinfo.h>
#endif
#define BACKTRACE_MAX_LINES 100
#define sprintf_concat(s, format, ...) \
snprintf(s + strlen(s), sizeof(s) - strlen(s), format, ##__VA_ARGS__)
static const char *request;
static int list_tests;
static int do_core;
static int no_fork;
static int no_timeout;
static int is_terminal; /* Whether stdout is a live terminal or pipe redirect */
uint bt_verbose;
const char *bt_filename;
const char *bt_test_id;
int bt_result; /* Overall program run result */
int bt_suite_result; /* One suit result */
char bt_out_fmt_buf[1024]; /* Temporary memory buffer for output of testing function */
long int
bt_random(void)
{
/* Seeded in bt_init() */
long int rand_low, rand_high;
rand_low = random();
rand_high = random();
return (rand_low & 0xffff) | ((rand_high & 0xffff) << 16);
}
void
bt_init(int argc, char *argv[])
{
int c;
srandom(BT_RANDOM_SEED);
bt_verbose = 0;
bt_filename = argv[0];
bt_result = 1;
bt_test_id = NULL;
is_terminal = isatty(fileno(stdout));
while ((c = getopt(argc, argv, "lcftv")) >= 0)
switch (c)
{
case 'l':
list_tests = 1;
break;
case 'c':
do_core = 1;
break;
case 'f':
no_fork = 1;
break;
case 't':
no_timeout = 1;
break;
case 'v':
bt_verbose++;
break;
default:
goto usage;
}
/* Optional requested test_id */
if ((optind + 1) == argc)
request = argv[optind++];
if (optind != argc)
goto usage;
if (do_core)
{
struct rlimit rl = {RLIM_INFINITY, RLIM_INFINITY};
int rv = setrlimit(RLIMIT_CORE, &rl);
bt_syscall(rv < 0, "setrlimit RLIMIT_CORE");
}
return;
usage:
printf("Usage: %s [-l] [-c] [-f] [-t] [-vvv] [<test_suit_name>]\n", argv[0]);
printf("Options: \n");
printf(" -l List all test suite names and descriptions \n");
printf(" -c Force unlimit core dumps (needs root privileges) \n");
printf(" -f No forking \n");
printf(" -t No timeout limit \n");
printf(" -v More verbosity, maximum is 3 -vvv \n");
exit(3);
}
static void
bt_dump_backtrace(void)
{
#ifdef HAVE_EXECINFO_H
void *buf[BACKTRACE_MAX_LINES];
char **pp_backtrace;
int lines, j;
if (!bt_verbose)
return;
lines = backtrace(buf, BACKTRACE_MAX_LINES);
bt_log("backtrace() returned %d addresses", lines);
pp_backtrace = backtrace_symbols(buf, lines);
if (pp_backtrace == NULL)
{
perror("backtrace_symbols");
exit(EXIT_FAILURE);
}
for (j = 0; j < lines; j++)
bt_log("%s", pp_backtrace[j]);
free(pp_backtrace);
#endif /* HAVE_EXECINFO_H */
}
static
int bt_run_test_fn(int (*fn)(const void *), const void *fn_arg, int timeout)
{
int result;
alarm(timeout);
if (fn_arg)
result = fn(fn_arg);
else
result = ((int (*)(void))fn)();
if (!bt_suite_result)
result = 0;
return result;
}
static uint
get_num_terminal_cols(void)
{
struct winsize w = {};
ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
uint cols = w.ws_col;
return (cols > 0 ? cols : 80);
}
/**
* bt_log_result - pretty print of test result
* @result: 1 or 0
* @fmt: a description message (could be long, over more lines)
* @argptr: variable argument list
*
* This function is used for pretty printing of test results on all verbose
* levels.
*/
static void
bt_log_result(int result, const char *fmt, va_list argptr)
{
static char msg_buf[BT_BUFFER_SIZE];
char *pos;
snprintf(msg_buf, sizeof(msg_buf), "%s%s%s%s",
bt_filename,
bt_test_id ? ": " : "",
bt_test_id ? bt_test_id : "",
(fmt && strlen(fmt) > 0) ? ": " : "");
pos = msg_buf + strlen(msg_buf);
vsnprintf(pos, sizeof(msg_buf) - (pos - msg_buf), fmt, argptr);
int chrs = 0;
for (uint i = 0; i < strlen(msg_buf); i += get_num_terminal_cols())
{
if (i)
printf("\n");
char *stop = msg_buf + i + get_num_terminal_cols();
char backup = *stop;
*stop = 0;
chrs = printf("%s", msg_buf + i);
*stop = backup;
}
int offset = get_num_terminal_cols() - chrs - BT_PROMPT_OK_FAIL_STRLEN;
if (offset < 0)
{
printf("\n");
offset = get_num_terminal_cols() - BT_PROMPT_OK_FAIL_STRLEN;
}
for (int i = 0; i < offset; i++)
putchar(' ');
const char *result_str = is_terminal ? BT_PROMPT_OK : BT_PROMPT_OK_NO_COLOR;
if (!result)
result_str = is_terminal ? BT_PROMPT_FAIL : BT_PROMPT_FAIL_NO_COLOR;
printf("%s\n", result_str);
}
/**
* bt_log_overall_result - pretty print of suite case result
* @result: 1 or 0
* @fmt: a description message (could be long, over more lines)
* ...: variable argument list
*
* This function is used for pretty printing of test suite case result.
*/
static void
bt_log_overall_result(int result, const char *fmt, ...)
{
va_list argptr;
va_start(argptr, fmt);
bt_log_result(result, fmt, argptr);
va_end(argptr);
}
/**
* bt_log_suite_result - pretty print of suite case result
* @result: 1 or 0
* @fmt: a description message (could be long, over more lines)
* ...: variable argument list
*
* This function is used for pretty printing of test suite case result.
*/
void
bt_log_suite_result(int result, const char *fmt, ...)
{
if(bt_verbose >= BT_VERBOSE_SUITE || !result)
{
va_list argptr;
va_start(argptr, fmt);
bt_log_result(result, fmt, argptr);
va_end(argptr);
}
}
/**
* bt_log_suite_case_result - pretty print of suite result
* @result: 1 or 0
* @fmt: a description message (could be long, over more lines)
* ...: variable argument list
*
* This function is used for pretty printing of test suite result.
*/
void
bt_log_suite_case_result(int result, const char *fmt, ...)
{
if(bt_verbose >= BT_VERBOSE_SUITE_CASE)
{
va_list argptr;
va_start(argptr, fmt);
bt_log_result(result, fmt, argptr);
va_end(argptr);
}
}
int
bt_test_suite_base(int (*fn)(const void *), const char *id, const void *fn_arg, int forked, int timeout, const char *dsc, ...)
{
if (list_tests)
{
printf("%28s - ", id);
va_list args;
va_start(args, dsc);
vprintf(dsc, args);
va_end(args);
printf("\n");
return 1;
}
if (no_fork)
forked = 0;
if (no_timeout)
timeout = 0;
if (request && strcmp(id, request))
return 1;
bt_suite_result = 1;
bt_test_id = id;
if (bt_verbose >= BT_VERBOSE_ABSOLUTELY_ALL)
bt_log("Starting");
if (!forked)
{
bt_suite_result = bt_run_test_fn(fn, fn_arg, timeout);
}
else
{
pid_t pid = fork();
bt_syscall(pid < 0, "fork");
if (pid == 0)
{
/* child of fork */
_exit(bt_run_test_fn(fn, fn_arg, timeout));
}
int s;
int rv = waitpid(pid, &s, 0);
bt_syscall(rv < 0, "waitpid");
if (WIFEXITED(s))
{
/* Normal exit */
bt_suite_result = WEXITSTATUS(s);
}
else if (WIFSIGNALED(s))
{
/* Stopped by signal */
bt_suite_result = 0;
int sn = WTERMSIG(s);
if (sn == SIGALRM)
{
bt_log("Timeout expired");
}
else if (sn == SIGSEGV)
{
bt_log("Segmentation fault");
bt_dump_backtrace();
}
else if (sn != SIGABRT)
bt_log("Signal %d received", sn);
}
if (WCOREDUMP(s) && bt_verbose)
bt_log("Core dumped");
}
if (!bt_suite_result)
bt_result = 0;
bt_log_suite_result(bt_suite_result, NULL);
bt_test_id = NULL;
return bt_suite_result;
}
int
bt_exit_value(void)
{
if (!list_tests || (list_tests && !bt_result))
bt_log_overall_result(bt_result, "");
return bt_result ? EXIT_SUCCESS : EXIT_FAILURE;
}
/**
* bt_assert_batch__ - test a batch of inputs/outputs tests
* @opts: includes all necessary data
*
* Should be called using macro bt_assert_batch().
* Returns 1 or 0.
*/
int
bt_assert_batch__(struct bt_batch *opts)
{
int i;
for (i = 0; i < opts->ndata; i++)
{
int bt_suit_case_result = opts->test_fn(opts->out_buf, opts->data[i].in, opts->data[i].out);
if (bt_suit_case_result == 0)
bt_suite_result = 0;
char b[BT_BUFFER_SIZE];
snprintf(b, sizeof(b), "%s(", opts->test_fn_name);
opts->in_fmt(b+strlen(b), sizeof(b)-strlen(b), opts->data[i].in);
sprintf_concat(b, ") gives ");
opts->out_fmt(b+strlen(b), sizeof(b)-strlen(b), opts->out_buf);
if (bt_suit_case_result == 0)
{
sprintf_concat(b, ", but expecting is ");
opts->out_fmt(b+strlen(b), sizeof(b)-strlen(b), opts->data[i].out);
}
bt_log_suite_case_result(bt_suit_case_result, "%s", b);
}
return bt_suite_result;
}
/**
* bt_fmt_str - formating string into output buffer
* @buf: buffer for write
* @size: empty size in @buf
* @data: null-byte terminated string
*
* This function can be used with bt_assert_batch() function.
* Input @data should be const char * string.
*/
void
bt_fmt_str(char *buf, size_t size, const void *data)
{
const byte *s = data;
snprintf(buf, size, "\"");
while (*s)
{
snprintf(buf+strlen(buf), size-strlen(buf), bt_is_char(*s) ? "%c" : "\\%03u", *s);
s++;
}
snprintf(buf+strlen(buf), size-strlen(buf), "\"");
}
/**
* bt_fmt_unsigned - formating unsigned int into output buffer
* @buf: buffer for write
* @size: empty size in @buf
* @data: unsigned number
*
* This function can be used with bt_assert_batch() function.
*/
void
bt_fmt_unsigned(char *buf, size_t size, const void *data)
{
const uint *n = data;
snprintf(buf, size, "0x%x (%u)", *n, *n);
}
/**
* bt_fmt_ipa - formating ip_addr into output buffer
* @buf: buffer for write
* @size: empty size in @buf
* @data: should be struct ip_addr *
*
* This function can be used with bt_assert_batch() function.
*/
void
bt_fmt_ipa(char *buf, size_t size, const void *data)
{
const ip_addr *ip = data;
bsnprintf(buf, size, "%I", *ip);
}
int
bt_is_char(byte c)
{
return (c >= (byte) 32 && c <= (byte) 126);
}
/*
* Mock-ups of all necessary public functions in main.c
*/
char *bird_name;
void async_config(void) {}
void async_dump(void) {}
void async_shutdown(void) {}
void cmd_check_config(char *name UNUSED) {}
void cmd_reconfig(char *name UNUSED, int type UNUSED, int timeout UNUSED) {}
void cmd_reconfig_confirm(void) {}
void cmd_reconfig_undo(void) {}
void cmd_reconfig_status(void) {}
void cmd_shutdown(void) {}
void cmd_reconfig_undo_notify(void) {}
#include "nest/bird.h"
#include "lib/net.h"
#include "conf/conf.h"
void sysdep_preconfig(struct config *c UNUSED) {}
int sysdep_commit(struct config *new UNUSED, struct config *old UNUSED) { return 0; }
void sysdep_shutdown_done(void) {}
#include "nest/cli.h"
int cli_get_command(cli *c UNUSED) { return 0; }
void cli_write_trigger(cli *c UNUSED) {}
cli *cmd_reconfig_stored_cli;