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#include <sys/types.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <limits.h>
#include <CUnit/CUnit.h>
#include "process.h"
#include "test_process.h"
void test_wait_for_death(void)
{
pid_t pid = fork();
if (pid == 0) {
usleep(20000);
execl("/bin/true", "/bin/true", NULL);
_exit(1);
}
CU_ASSERT(!wait_for_death(pid, 0, 2000));
CU_ASSERT(wait_for_death(pid, 0, 20000));
}
void test_ensure_death(void)
{
pid_t pid = fork();
if (pid == 0) {
signal(SIGTERM, SIG_IGN);
signal(SIGHUP, SIG_IGN);
execl("/bin/true", "/bin/true", NULL);
_exit(0);
}
ensure_death(pid);
CU_ASSERT(waitpid(pid, NULL, WNOHANG) < 0);
CU_ASSERT(errno == ECHILD);
}
int child_function(void *a)
{
char *s = a;
ssize_t l = strlen(s);
char buffer[LINE_MAX];
ssize_t l_in;
ssize_t l_out;
if (write(STDOUT_FILENO, s, l) < l)
return 1;
l_in = read(STDIN_FILENO, buffer, sizeof buffer);
if (l_in <= 0)
return 1;
l_out = write(STDOUT_FILENO, buffer, l_in);
if (l_out != l_in)
return 1;
return 0;
}
void test_create_child_function(void)
{
char *s1 = "hello";
char *s2 = "world";
ssize_t l1 = strlen(s1);
ssize_t l2 = strlen(s2);
struct child_process child = {
.function = child_function,
.argument = s1,
.stdin_fd = REDIRECT_PIPE,
.stdout_fd = REDIRECT_PIPE,
.stderr_fd = REDIRECT_DEV_NULL,
};
int status;
char buffer[LINE_MAX];
CU_ASSERT(create_child(&child));
CU_ASSERT(child.pid > 0);
CU_ASSERT(read(child.stdout_fd, buffer, sizeof buffer) == l1);
CU_ASSERT(strncmp(buffer, s1, l1) == 0);
CU_ASSERT(waitpid(child.pid, NULL, WNOHANG) == 0);
CU_ASSERT(write(child.stdin_fd, s2, l2) == l2);
CU_ASSERT(read(child.stdout_fd, buffer, sizeof buffer) == l2);
CU_ASSERT(strncmp(buffer, s2, l2) == 0);
CU_ASSERT(waitpid(child.pid, &status, 0) == child.pid);
CU_ASSERT(WIFEXITED(status));
CU_ASSERT(WEXITSTATUS(status) == 0);
(void) close(child.stdin_fd);
(void) close(child.stdout_fd);
}
void test_create_child_process(void)
{
const char *s1 = "hello\n";
const char *s2 = "olleh\n";
ssize_t l1 = strlen(s1);
ssize_t l2 = strlen(s2);
const char *argv[] = { "sh", "-c", "rev", NULL };
struct child_process child = {
.path = "/bin/sh",
.argv = argv,
.stdin_fd = REDIRECT_PIPE,
.stdout_fd = REDIRECT_PIPE,
.stderr_fd = REDIRECT_DEV_NULL,
.function = NULL,
};
char buffer[LINE_MAX];
CU_ASSERT(create_child(&child));
CU_ASSERT(write(child.stdin_fd, s1, l1) == l1);
(void) close(child.stdin_fd);
CU_ASSERT(read(child.stdout_fd, buffer, sizeof buffer) == l2);
(void) close(child.stdout_fd);
CU_ASSERT(strncmp(buffer, s2, l2) == 0);
CU_ASSERT(wait_for_death(child.pid, 0, 0));
}
CU_TestInfo process_tests[] = {
{ "test_wait_for_death", test_wait_for_death },
{ "test_ensure_death", test_ensure_death },
{ "test_create_child_function", test_create_child_function },
{ "test_create_child_process", test_create_child_process },
CU_TEST_INFO_NULL,
};
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