Add class comment for MergeHandlerTest.
@@ -20,6 +20,10 @@ using namespace ::testing;
namespace storage {
+/*
+ * Class for testing merge handler taking async_apply_bucket_diff as
+ * parameter for the test.
+ */
struct MergeHandlerTest : SingleDiskPersistenceTestUtils,
public testing::WithParamInterface<bool> {
uint32_t _location; // Location used for all merge tests
