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-rw-r--r--tests/unit/test-bufferiszero.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/tests/unit/test-bufferiszero.c b/tests/unit/test-bufferiszero.c
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+++ b/tests/unit/test-bufferiszero.c
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+/*
+ * QEMU buffer_is_zero test
+ *
+ * Copyright (c) 2016 Red Hat, Inc.
+ *
+ * This library 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.
+ *
+ * This library 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 this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/cutils.h"
+
+static char buffer[8 * 1024 * 1024];
+
+static void test_1(void)
+{
+ size_t s, a, o;
+
+ /* Basic positive test. */
+ g_assert(buffer_is_zero(buffer, sizeof(buffer)));
+
+ /* Basic negative test. */
+ buffer[sizeof(buffer) - 1] = 1;
+ g_assert(!buffer_is_zero(buffer, sizeof(buffer)));
+ buffer[sizeof(buffer) - 1] = 0;
+
+ /* Positive tests for size and alignment. */
+ for (a = 1; a <= 64; a++) {
+ for (s = 1; s < 1024; s++) {
+ buffer[a - 1] = 1;
+ buffer[a + s] = 1;
+ g_assert(buffer_is_zero(buffer + a, s));
+ buffer[a - 1] = 0;
+ buffer[a + s] = 0;
+ }
+ }
+
+ /* Negative tests for size, alignment, and the offset of the marker. */
+ for (a = 1; a <= 64; a++) {
+ for (s = 1; s < 1024; s++) {
+ for (o = 0; o < s; ++o) {
+ buffer[a + o] = 1;
+ g_assert(!buffer_is_zero(buffer + a, s));
+ buffer[a + o] = 0;
+ }
+ }
+ }
+}
+
+static void test_2(void)
+{
+ if (g_test_perf()) {
+ test_1();
+ } else {
+ do {
+ test_1();
+ } while (test_buffer_is_zero_next_accel());
+ }
+}
+
+int main(int argc, char **argv)
+{
+ g_test_init(&argc, &argv, NULL);
+ g_test_add_func("/cutils/bufferiszero", test_2);
+
+ return g_test_run();
+}