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-rw-r--r--qemu/tests/test-write-threshold.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/qemu/tests/test-write-threshold.c b/qemu/tests/test-write-threshold.c
new file mode 100644
index 000000000..faffa7b85
--- /dev/null
+++ b/qemu/tests/test-write-threshold.c
@@ -0,0 +1,119 @@
+/*
+ * Test block device write threshold
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ *
+ */
+
+#include <glib.h>
+#include <stdint.h>
+#include "block/block_int.h"
+#include "block/write-threshold.h"
+
+
+static void test_threshold_not_set_on_init(void)
+{
+ uint64_t res;
+ BlockDriverState bs;
+ memset(&bs, 0, sizeof(bs));
+
+ g_assert(!bdrv_write_threshold_is_set(&bs));
+
+ res = bdrv_write_threshold_get(&bs);
+ g_assert_cmpint(res, ==, 0);
+}
+
+static void test_threshold_set_get(void)
+{
+ uint64_t threshold = 4 * 1024 * 1024;
+ uint64_t res;
+ BlockDriverState bs;
+ memset(&bs, 0, sizeof(bs));
+
+ bdrv_write_threshold_set(&bs, threshold);
+
+ g_assert(bdrv_write_threshold_is_set(&bs));
+
+ res = bdrv_write_threshold_get(&bs);
+ g_assert_cmpint(res, ==, threshold);
+}
+
+static void test_threshold_multi_set_get(void)
+{
+ uint64_t threshold1 = 4 * 1024 * 1024;
+ uint64_t threshold2 = 15 * 1024 * 1024;
+ uint64_t res;
+ BlockDriverState bs;
+ memset(&bs, 0, sizeof(bs));
+
+ bdrv_write_threshold_set(&bs, threshold1);
+ bdrv_write_threshold_set(&bs, threshold2);
+ res = bdrv_write_threshold_get(&bs);
+ g_assert_cmpint(res, ==, threshold2);
+}
+
+static void test_threshold_not_trigger(void)
+{
+ uint64_t amount = 0;
+ uint64_t threshold = 4 * 1024 * 1024;
+ BlockDriverState bs;
+ BdrvTrackedRequest req;
+
+ memset(&bs, 0, sizeof(bs));
+ memset(&req, 0, sizeof(req));
+ req.offset = 1024;
+ req.bytes = 1024;
+
+ bdrv_write_threshold_set(&bs, threshold);
+ amount = bdrv_write_threshold_exceeded(&bs, &req);
+ g_assert_cmpuint(amount, ==, 0);
+}
+
+
+static void test_threshold_trigger(void)
+{
+ uint64_t amount = 0;
+ uint64_t threshold = 4 * 1024 * 1024;
+ BlockDriverState bs;
+ BdrvTrackedRequest req;
+
+ memset(&bs, 0, sizeof(bs));
+ memset(&req, 0, sizeof(req));
+ req.offset = (4 * 1024 * 1024) - 1024;
+ req.bytes = 2 * 1024;
+
+ bdrv_write_threshold_set(&bs, threshold);
+ amount = bdrv_write_threshold_exceeded(&bs, &req);
+ g_assert_cmpuint(amount, >=, 1024);
+}
+
+typedef struct TestStruct {
+ const char *name;
+ void (*func)(void);
+} TestStruct;
+
+
+int main(int argc, char **argv)
+{
+ size_t i;
+ TestStruct tests[] = {
+ { "/write-threshold/not-set-on-init",
+ test_threshold_not_set_on_init },
+ { "/write-threshold/set-get",
+ test_threshold_set_get },
+ { "/write-threshold/multi-set-get",
+ test_threshold_multi_set_get },
+ { "/write-threshold/not-trigger",
+ test_threshold_not_trigger },
+ { "/write-threshold/trigger",
+ test_threshold_trigger },
+ { NULL, NULL }
+ };
+
+ g_test_init(&argc, &argv, NULL);
+ for (i = 0; tests[i].name != NULL; i++) {
+ g_test_add_func(tests[i].name, tests[i].func);
+ }
+ return g_test_run();
+}