1 files changed, 98 insertions, 0 deletions
diff --git a/src/rocksdb/utilities/cassandra/cassandra_row_merge_test.cc b/src/rocksdb/utilities/cassandra/cassandra_row_merge_test.cc
new file mode 100644
index 000000000..0b4a89287
--- /dev/null
+++ b/src/rocksdb/utilities/cassandra/cassandra_row_merge_test.cc
@@ -0,0 +1,98 @@
+// Copyright (c) 2017-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under both the GPLv2 (found in the
+//  COPYING file in the root directory) and Apache 2.0 License
+//  (found in the LICENSE.Apache file in the root directory).
+
+#include <memory>
+
+#include "test_util/testharness.h"
+#include "utilities/cassandra/format.h"
+#include "utilities/cassandra/test_utils.h"
+
+namespace ROCKSDB_NAMESPACE {
+namespace cassandra {
+
+class RowValueMergeTest : public testing::Test {};
+
+TEST(RowValueMergeTest, Merge) {
+  std::vector<RowValue> row_values;
+  row_values.push_back(CreateTestRowValue({
+      CreateTestColumnSpec(kTombstone, 0, 5),
+      CreateTestColumnSpec(kColumn, 1, 8),
+      CreateTestColumnSpec(kExpiringColumn, 2, 5),
+  }));
+
+  row_values.push_back(CreateTestRowValue({
+      CreateTestColumnSpec(kColumn, 0, 2),
+      CreateTestColumnSpec(kExpiringColumn, 1, 5),
+      CreateTestColumnSpec(kTombstone, 2, 7),
+      CreateTestColumnSpec(kExpiringColumn, 7, 17),
+  }));
+
+  row_values.push_back(CreateTestRowValue({
+      CreateTestColumnSpec(kExpiringColumn, 0, 6),
+      CreateTestColumnSpec(kTombstone, 1, 5),
+      CreateTestColumnSpec(kColumn, 2, 4),
+      CreateTestColumnSpec(kTombstone, 11, 11),
+  }));
+
+  RowValue merged = RowValue::Merge(std::move(row_values));
+  EXPECT_FALSE(merged.IsTombstone());
+  EXPECT_EQ(merged.get_columns().size(), 5);
+  VerifyRowValueColumns(merged.get_columns(), 0, kExpiringColumn, 0, 6);
+  VerifyRowValueColumns(merged.get_columns(), 1, kColumn, 1, 8);
+  VerifyRowValueColumns(merged.get_columns(), 2, kTombstone, 2, 7);
+  VerifyRowValueColumns(merged.get_columns(), 3, kExpiringColumn, 7, 17);
+  VerifyRowValueColumns(merged.get_columns(), 4, kTombstone, 11, 11);
+}
+
+TEST(RowValueMergeTest, MergeWithRowTombstone) {
+  std::vector<RowValue> row_values;
+
+  // A row tombstone.
+  row_values.push_back(CreateRowTombstone(11));
+
+  // This row's timestamp is smaller than tombstone.
+  row_values.push_back(CreateTestRowValue({
+      CreateTestColumnSpec(kColumn, 0, 5),
+      CreateTestColumnSpec(kColumn, 1, 6),
+  }));
+
+  // Some of the column's row is smaller, some is larger.
+  row_values.push_back(CreateTestRowValue({
+      CreateTestColumnSpec(kColumn, 2, 10),
+      CreateTestColumnSpec(kColumn, 3, 12),
+  }));
+
+  // All of the column's rows are larger than tombstone.
+  row_values.push_back(CreateTestRowValue({
+      CreateTestColumnSpec(kColumn, 4, 13),
+      CreateTestColumnSpec(kColumn, 5, 14),
+  }));
+
+  RowValue merged = RowValue::Merge(std::move(row_values));
+  EXPECT_FALSE(merged.IsTombstone());
+  EXPECT_EQ(merged.get_columns().size(), 3);
+  VerifyRowValueColumns(merged.get_columns(), 0, kColumn, 3, 12);
+  VerifyRowValueColumns(merged.get_columns(), 1, kColumn, 4, 13);
+  VerifyRowValueColumns(merged.get_columns(), 2, kColumn, 5, 14);
+
+  // If the tombstone's timestamp is the latest, then it returns a
+  // row tombstone.
+  row_values.push_back(CreateRowTombstone(15));
+
+  row_values.push_back(CreateRowTombstone(17));
+
+  merged = RowValue::Merge(std::move(row_values));
+  EXPECT_TRUE(merged.IsTombstone());
+  EXPECT_EQ(merged.LastModifiedTime(), 17);
+}
+
+}  // namespace cassandra
+}  // namespace ROCKSDB_NAMESPACE
+
+int main(int argc, char** argv) {
+  ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}