michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /*
michael@0:  * File: pipepong.c
michael@0:  *
michael@0:  * Description:
michael@0:  * This test runs in conjunction with the pipeping test.
michael@0:  * The pipeping test creates two pipes and redirects the
michael@0:  * stdin and stdout of this test to the pipes.  Then the
michael@0:  * pipeping test writes "ping" to this test and this test
michael@0:  * writes "pong" back.  Note that this test does not depend
michael@0:  * on NSPR at all.  To run this pair of tests, just invoke
michael@0:  * pipeping.
michael@0:  *
michael@0:  * Tested areas: process creation, pipes, file descriptor
michael@0:  * inheritance, standard I/O redirection.
michael@0:  */
michael@0: 
michael@0: #include <stdio.h>
michael@0: #include <string.h>
michael@0: #include <stdlib.h>
michael@0: 
michael@0: #define NUM_ITERATIONS 10
michael@0: 
michael@0: int main(int argc, char **argv)
michael@0: {
michael@0:     char buf[1024];
michael@0:     size_t nBytes;
michael@0:     int idx;
michael@0: 
michael@0:     for (idx = 0; idx < NUM_ITERATIONS; idx++) {
michael@0:         memset(buf, 0, sizeof(buf));
michael@0:         nBytes = fread(buf, 1, 5, stdin);
michael@0:         fprintf(stderr, "pong process: received \"%s\"\n", buf);
michael@0:         if (nBytes != 5) {
michael@0:             fprintf(stderr, "pong process: expected 5 bytes but got %d bytes\n",
michael@0:                     nBytes);
michael@0:             exit(1);
michael@0:         }
michael@0:         if (strcmp(buf, "ping") != 0) {
michael@0:             fprintf(stderr, "pong process: expected \"ping\" but got \"%s\"\n",
michael@0:                     buf);
michael@0:             exit(1);
michael@0:         }
michael@0: 
michael@0:         strcpy(buf, "pong");
michael@0:         fprintf(stderr, "pong process: sending \"%s\"\n", buf);
michael@0:         nBytes = fwrite(buf, 1, 5, stdout);
michael@0:         if (nBytes != 5) {
michael@0:             fprintf(stderr, "pong process: fwrite failed\n");
michael@0:             exit(1);
michael@0:         }
michael@0:         fflush(stdout);
michael@0:     }
michael@0: 
michael@0:     return 0;
michael@0: }