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-rw-r--r--src/test/test-ring.c135
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diff --git a/src/test/test-ring.c b/src/test/test-ring.c
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+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 David Herrmann <dh.herrmann@gmail.com>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <locale.h>
+#include <errno.h>
+
+#include "def.h"
+#include "ring.h"
+#include "util.h"
+
+static void test_ring(void) {
+ static const char buf[8192];
+ struct ring r;
+ size_t l;
+ struct iovec vec[2];
+ int s;
+
+ memset(&r, 0, sizeof(r));
+
+ l = ring_peek(&r, vec);
+ assert_se(l == 0);
+
+ s = ring_push(&r, buf, 2048);
+ assert_se(!s);
+ assert_se(ring_get_size(&r) == 2048);
+
+ l = ring_peek(&r, vec);
+ assert_se(l == 1);
+ assert_se(vec[0].iov_len == 2048);
+ assert_se(!memcmp(vec[0].iov_base, buf, vec[0].iov_len));
+ assert_se(ring_get_size(&r) == 2048);
+
+ ring_pull(&r, 2048);
+ assert_se(ring_get_size(&r) == 0);
+
+ l = ring_peek(&r, vec);
+ assert_se(l == 0);
+ assert_se(ring_get_size(&r) == 0);
+
+ s = ring_push(&r, buf, 2048);
+ assert_se(!s);
+ assert_se(ring_get_size(&r) == 2048);
+
+ l = ring_peek(&r, vec);
+ assert_se(l == 1);
+ assert_se(vec[0].iov_len == 2048);
+ assert_se(!memcmp(vec[0].iov_base, buf, vec[0].iov_len));
+ assert_se(ring_get_size(&r) == 2048);
+
+ s = ring_push(&r, buf, 1);
+ assert_se(!s);
+ assert_se(ring_get_size(&r) == 2049);
+
+ l = ring_peek(&r, vec);
+ assert_se(l == 2);
+ assert_se(vec[0].iov_len == 2048);
+ assert_se(vec[1].iov_len == 1);
+ assert_se(!memcmp(vec[0].iov_base, buf, vec[0].iov_len));
+ assert_se(!memcmp(vec[1].iov_base, buf, vec[1].iov_len));
+ assert_se(ring_get_size(&r) == 2049);
+
+ ring_pull(&r, 2048);
+ assert_se(ring_get_size(&r) == 1);
+
+ l = ring_peek(&r, vec);
+ assert_se(l == 1);
+ assert_se(vec[0].iov_len == 1);
+ assert_se(!memcmp(vec[0].iov_base, buf, vec[0].iov_len));
+ assert_se(ring_get_size(&r) == 1);
+
+ ring_pull(&r, 1);
+ assert_se(ring_get_size(&r) == 0);
+
+ s = ring_push(&r, buf, 2048);
+ assert_se(!s);
+ assert_se(ring_get_size(&r) == 2048);
+
+ s = ring_push(&r, buf, 2049);
+ assert_se(!s);
+ assert_se(ring_get_size(&r) == 4097);
+
+ l = ring_peek(&r, vec);
+ assert_se(l == 1);
+ assert_se(vec[0].iov_len == 4097);
+ assert_se(!memcmp(vec[0].iov_base, buf, vec[0].iov_len));
+ assert_se(ring_get_size(&r) == 4097);
+
+ ring_pull(&r, 1);
+ assert_se(ring_get_size(&r) == 4096);
+
+ s = ring_push(&r, buf, 4096);
+ assert_se(!s);
+ assert_se(ring_get_size(&r) == 8192);
+
+ l = ring_peek(&r, vec);
+ assert_se(l == 2);
+ assert_se(vec[0].iov_len == 8191);
+ assert_se(vec[1].iov_len == 1);
+ assert_se(!memcmp(vec[0].iov_base, buf, vec[0].iov_len));
+ assert_se(!memcmp(vec[1].iov_base, buf, vec[1].iov_len));
+ assert_se(ring_get_size(&r) == 8192);
+
+ ring_clear(&r);
+ assert_se(ring_get_size(&r) == 0);
+}
+
+int main(int argc, char *argv[]) {
+ log_parse_environment();
+ log_open();
+
+ test_ring();
+
+ return 0;
+}