ccan/io: new module.

[ccan] / ccan / io / test / run-03-readpartial.c

diff --git a/ccan/io/test/run-03-readpartial.c b/ccan/io/test/run-03-readpartial.c
new file mode 100644 (file)
index 0000000..cc1857c
--- /dev/null
+++ b/ccan/io/test/run-03-readpartial.c
@@ -0,0 +1,137 @@
+#include <ccan/io/io.h>
+/* Include the C files directly. */
+#include <ccan/io/poll.c>
+#include <ccan/io/io.c>
+#include <ccan/tap/tap.h>
+#include <sys/wait.h>
+#include <stdio.h>
+
+struct data {
+       int state;
+       size_t bytes;
+       char buf[4];
+};
+
+static struct io_op *start_ok(struct io_conn *conn, struct data *d)
+{
+       ok1(d->state == 0);
+       d->state++;
+       d->bytes = sizeof(d->buf);
+       return io_read_partial(d->buf, &d->bytes, io_next(conn, io_close, d));
+}
+
+static void finish_ok(struct io_conn *conn, struct data *d)
+{
+       ok1(d->state == 1);
+       d->state++;
+       io_break(d, NULL);
+}
+
+static int make_listen_fd(const char *port, struct addrinfo **info)
+{
+       int fd, on = 1;
+       struct addrinfo *addrinfo, hints;
+
+       memset(&hints, 0, sizeof(hints));
+       hints.ai_family = AF_UNSPEC;
+       hints.ai_socktype = SOCK_STREAM;
+       hints.ai_flags = AI_PASSIVE;
+       hints.ai_protocol = 0;
+
+       if (getaddrinfo(NULL, port, &hints, &addrinfo) != 0)
+               return -1;
+
+       fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+                   addrinfo->ai_protocol);
+       if (fd < 0)
+               return -1;
+
+       setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+       if (bind(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0) {
+               close(fd);
+               return -1;
+       }
+       if (listen(fd, 1) != 0) {
+               close(fd);
+               return -1;
+       }
+       *info = addrinfo;
+       return fd;
+}
+
+static void write_to_socket(const char *str, const struct addrinfo *addrinfo)
+{
+       int fd, i;
+
+       fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+                   addrinfo->ai_protocol);
+       if (fd < 0)
+               exit(1);
+       if (connect(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0)
+               exit(2);
+       signal(SIGPIPE, SIG_IGN);
+       for (i = 0; i < strlen(str); i++) {
+               if (write(fd, str + i, 1) != 1)
+                       break;
+       }
+       close(fd);
+}
+
+int main(void)
+{
+       struct data *d = malloc(sizeof(*d));
+       struct addrinfo *addrinfo;
+       struct io_listener *l;
+       int fd, status;
+
+       /* This is how many tests you plan to run */
+       plan_tests(22);
+       d->state = 0;
+       fd = make_listen_fd("65003", &addrinfo);
+       ok1(fd >= 0);
+       l = io_new_listener(fd, start_ok, finish_ok, d);
+       ok1(l);
+       fflush(stdout);
+       if (!fork()) {
+               io_close_listener(l);
+               write_to_socket("hellothere", addrinfo);
+               freeaddrinfo(addrinfo);
+               free(d);
+               exit(0);
+       }
+       ok1(io_loop() == d);
+       ok1(d->state == 2);
+       ok1(d->bytes > 0);
+       ok1(d->bytes <= sizeof(d->buf));
+       ok1(memcmp(d->buf, "hellothere", d->bytes) == 0);
+
+       ok1(wait(&status));
+       ok1(WIFEXITED(status));
+       ok1(WEXITSTATUS(status) == 0);
+
+       fflush(stdout);
+       if (!fork()) {
+               io_close_listener(l);
+               write_to_socket("hi", addrinfo);
+               freeaddrinfo(addrinfo);
+               free(d);
+               exit(0);
+       }
+       d->state = 0;
+       ok1(io_loop() == d);
+       ok1(d->state == 2);
+       ok1(d->bytes > 0);
+       ok1(d->bytes <= strlen("hi"));
+       ok1(memcmp(d->buf, "hi", d->bytes) == 0);
+
+       freeaddrinfo(addrinfo);
+       free(d);
+       io_close_listener(l);
+
+       ok1(wait(&status));
+       ok1(WIFEXITED(status));
+       ok1(WEXITSTATUS(status) == 0);
+
+       /* This exits depending on whether all tests passed */
+       return exit_status();
+}