>From a99deb9bcdd611c52589fa733dd90057f1f134bf Mon Sep 17 00:00:00 2001
From: Sukadev Bhattiprolu <[EMAIL PROTECTED]>
Date: Sun, 22 Jun 2008 21:05:48 -0700
Subject: [PATCH] Support multiple pipe test cases
Modify pipe.c to support multiple test cases and to select a test case
using the -t option.
Implement two tests:
- empty pipe
- single write to pipe followed by continous read
---
tests/pipe.c | 93 ++++++++++++++++++++++++++++++++++++++++++++++-----------
1 files changed, 75 insertions(+), 18 deletions(-)
diff --git a/tests/pipe.c b/tests/pipe.c
index 0812cb3..76be6cc 100644
--- a/tests/pipe.c
+++ b/tests/pipe.c
@@ -1,52 +1,109 @@
#include <stdio.h>
#include <sys/types.h>
+#include <sys/fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
-#include <sys/fcntl.h>
-int main(int argc, char *argv[])
+char *test_descriptions[] = {
+ NULL,
+ "Test with an empty pipe",
+ "Test with single-write to and continous read from a pipe",
+ "Test continous reads/writes from pipe",
+ "Test non-consecutive pipe-fds",
+ "Test with read-fd > write-fd",
+ "Test with read-fd/write-fd swapped",
+ "Test with all-fds in use",
+ "Test with all-fds in use for pipes",
+};
+
+static int last_num = 2;
+usage(char *argv[])
+{
+ int i;
+ printf("Usage: %s -t <test-number>\n", argv[0]);
+ printf("\t where <test-number is in range 1..%d\n", last_num);
+ for (i = 0; i < last_num; i++)
+ printf("\t test-%d: %s\n", i, test_descriptions[i]);
+ exit(1);
+}
+
+int test1()
{
int i = 0;
- int rc;
int fds[2];
+
+ if (pipe(fds) < 0) {
+ perror("pipe()");
+ exit(1);
+ }
+
+ printf("Running as %d\n", getpid());
+ while (i<100) {
+ sleep(1);
+ printf("i is %d (pid %d)\n", i, getpid());
+ i++;
+ }
+}
+
+int test2()
+{
+ int i = 0;
int c;
- int empty;
+ int rc;
+ int fds[2];
char *buf = "abcdefghijklmnopqrstuvwxyz";
- /*
- * -e: test with an empty pipe
- */
- empty = 0;
- if (argc > 1 && strcmp(argv[1], "-e") == 0)
- empty = 1;
-
if (pipe(fds) < 0) {
perror("pipe()");
exit(1);
}
- if (!empty)
- write(fds[1], buf, strlen(buf));
+ write(fds[1], buf, strlen(buf));
if (fcntl(fds[0], F_SETFL, O_NONBLOCK) < 0) {
perror("fcntl()");
exit(1);
}
+
printf("Running as %d\n", getpid());
while (i<100) {
sleep(1);
if (i%5 == 0) {
c = errno = 0;
rc = read(fds[0], &c, 1);
- if (rc != 1) {
- perror("read() failed");
- }
- printf("i is %d (pid %d), c is %c\n", i, getpid(), c);
-
+ if (rc != 1)
+ perror("read() pipe failed\n");
+ printf("i is %d (pid %d), next byte is %d\n", i,
+ getpid(), c);
}
i++;
}
}
+int
+main(int argc, char *argv[])
+{
+ int c;
+ int tc_num;
+
+ while((c = getopt(argc, argv, "t:")) != EOF) {
+ switch(c) {
+ case 't':
+ tc_num = atoi(optarg);
+ break;
+ default:
+ printf("Unknown option %c\n", c);
+ usage(argv);
+ }
+ }
+
+ switch(tc_num) {
+ case 1: test1(); break;
+ case 2: test2(); break;
+ default:
+ printf("Unsupported test case %d\n", tc_num);
+ usage(argv);
+ }
+}
--
1.5.2.5
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