[utils unit-tests] use a different test for "fast close after fd send"

src/unittests/test-utils.c

@@ -23,6 +23,60 @@ static void test_send_fd(void) {
 	/* check whether we still can send normal data after fd */
 	write(sockfd[0], CONST_STR_LEN("abcx"));
 
+	/* check receiving fd */
+	if (-1 == li_receive_fd(sockfd[1], &rfd)) {
+		perror("li_receive_fd");
+	}
+
+	/* check whether we still can receive normal data after fd */
+	buf[0] = '\0';
+	if (-1 == read(sockfd[1], buf, 5)) {
+		perror("read");
+	}
+	buf[4] = '\0';
+
+	g_test_message("received on socket: %s", buf);
+
+	g_assert_cmpstr(buf, ==, "abcx");
+
+	/* check whether pipe still works after receiving end was passed */
+	write(pipefds[1], CONST_STR_LEN("test"));
+
+	buf[0] = '\0';
+	if (-1 == read(rfd, buf, 5)) {
+		perror("read");
+	}
+	buf[4] = '\0';
+
+	g_test_message("received on pipe: %s", buf);
+
+	g_assert_cmpstr(buf, ==, "test");
+
+	close(pipefds[0]); close(pipefds[1]);
+	close(sockfd[0]); close(sockfd[1]);
+	close(rfd);
+}
+
+static void test_send_fd_with_fast_close(void) {
+	int pipefds[2], sockfd[2], rfd = -1;
+	char buf[5];
+
+	if (-1 == pipe(pipefds)) {
+		perror("pipe");
+	}
+
+	if (-1 == socketpair(AF_UNIX, SOCK_STREAM, 0, sockfd)) {
+		perror("socketpair");
+	}
+
+	/* try sending fd */
+	if (-1 == li_send_fd(sockfd[0], pipefds[0])) {
+		perror("li_send_fd");
+	}
+
+	/* check whether we still can send normal data after fd */
+	write(sockfd[0], CONST_STR_LEN("abcx"));
+
 	/* make sure we can close the fd before the other end received it */
 	close(pipefds[0]);
 
@@ -92,6 +146,7 @@ int main(int argc, char **argv) {
 	g_test_init(&argc, &argv, NULL);
 
 	g_test_add_func("/utils/send_fd", test_send_fd);
+	g_test_add_func("/utils/send_fd_with_fast_close", test_send_fd_with_fast_close);
 	g_test_add_func("/utils/apr_sha1_base64/1", test_apr_sha1_base64_1);
 	g_test_add_func("/utils/apr_sha1_base64/2", test_apr_sha1_base64_2);
 	g_test_add_func("/utils/apr_md5_crypt", test_apr_md5_crypt);