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/* Copyright (C) 2017 Jakob Kreuze, All Rights Reserved.
Skullfuck 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.
Skullfuck 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 Skullfuck. If not, see <http://www.gnu.org/licenses/>. */
#include <sys/types.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define EXIT_SUCCESS 0
#define EXIT_FAILURE 1
/* Exits with a failing status code if a test binary does not exist. */
static void assert_test_existence(void) {
if (access("hello", F_OK) == -1) {
fprintf(stderr, "Hello world binary does not exist.\n");
exit(EXIT_FAILURE);
} else if (access("rot13", F_OK) == -1) {
fprintf(stderr, "rot13 binary does not exist.\n");
exit(EXIT_FAILURE);
}
}
/* Prints `msg` to error output and quits with a failing status code. */
static void panic(char *msg) {
fprintf(stderr, msg);
fprintf(stderr, "Tests failed! Terminating!");
exit(EXIT_FAILURE);
}
/* Tests the hello world binary. */
static void test_hello_world(void) {
int pipefd[2];
char *buf;
pid_t pid;
if (pipe(pipefd) == -1) {
perror("pipe");
exit(EXIT_FAILURE);
}
if ((pid = fork()) == -1) {
perror("fork");
exit(EXIT_FAILURE);
}
if (pid == 0) {
dup2(pipefd[1], 1);
close(pipefd[0]);
execl("hello", "hello", NULL);
} else {
buf = malloc(0x100);
dup2(pipefd[0], 0);
close(pipefd[1]);
fgets(buf, 0x100, stdin);
if (!strcmp(buf, "Hello World!"))
panic("Hello World binary did not properly output text.\n");
free(buf);
}
}
int main(int argc, char **argv) {
assert_test_existence();
test_hello_world();
printf("All tests passed.\n");
}
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