diff --git a/src/replica/replica_stub.h b/src/replica/replica_stub.h
index ab2748f635..bb8d069428 100644
--- a/src/replica/replica_stub.h
+++ b/src/replica/replica_stub.h
@@ -485,6 +485,7 @@ class replica_stub : public serverlet<replica_stub>, public ref_counter
     friend class replica_follower_test;
     friend class replica_http_service_test;
     friend class mock_load_replica;
+    friend class GetReplicaDirNameTest;
     FRIEND_TEST(open_replica_test, open_replica_add_decree_and_ballot_check);
     FRIEND_TEST(replica_test, test_auto_trash_of_corruption);
     FRIEND_TEST(replica_test, test_clear_on_failure);
diff --git a/src/replica/test/replica_dir_test.cpp b/src/replica/test/replica_dir_test.cpp
new file mode 100644
index 0000000000..39d5a78165
--- /dev/null
+++ b/src/replica/test/replica_dir_test.cpp
@@ -0,0 +1,97 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#include <cstddef>
+#include <cstdint>
+#include <fmt/core.h>
+#include <map>
+#include <memory>
+#include <mutex>
+#include <set>
+#include <string>
+#include <type_traits>
+#include <unordered_map>
+#include <utility>
+#include <vector>
+
+#include "common/fs_manager.h"
+#include "common/gpid.h"
+#include "common/replication.codes.h"
+#include "dsn.layer2_types.h"
+#include "gtest/gtest.h"
+#include "replica/replica.h"
+#include "replica/replica_stub.h"
+#include "replica/replication_app_base.h"
+#include "replica/test/mock_utils.h"
+#include "runtime/task/task.h"
+#include "runtime/task/task_code.h"
+#include "runtime/task/task_spec.h"
+#include "test_util/test_util.h"
+#include "utils/autoref_ptr.h"
+#include "utils/filesystem.h"
+#include "utils/flags.h"
+#include "utils/ports.h"
+
+namespace dsn::replication {
+
+struct get_replica_dir_name_case
+{
+    std::string path;
+    std::string expected_replica_dir_name;
+};
+
+class GetReplicaDirNameTest : public testing::TestWithParam<get_replica_dir_name_case>
+{
+public:
+    GetReplicaDirNameTest() = default;
+
+    ~GetReplicaDirNameTest() override = default;
+
+    void test_get_replica_dir_name()
+    {
+        const auto &test_case = GetParam();
+        const auto &actual_replica_dir_name = replica_stub::get_replica_dir_name(test_case.path);
+        EXPECT_EQ(test_case.expected_replica_dir_name, actual_replica_dir_name);
+    }
+};
+
+TEST_P(GetReplicaDirNameTest, GetReplicaDirName) { test_get_replica_dir_name(); }
+
+const std::vector<get_replica_dir_name_case> get_replica_dir_name_tests{
+    // Linux absolute path and non-empty dir name.
+    {"/data/pegasus/1.2.pegasus", "1.2.pegasus"},
+    // Linux absolute path and empty dir name.
+    {"/data/pegasus/1.2.pegasus/", ""},
+    // Windows absolute path and non-empty dir name.
+    {"D:\\data\\pegasus\\1.2.pegasus", "1.2.pegasus"},
+    // Windows absolute path and empty dir name.
+    {"D:\\data\\pegasus\\1.2.pegasus\\", ""},
+    // Linux relative path and non-empty dir name.
+    {"./1.2.pegasus", "1.2.pegasus"},
+    // Linux relative path and empty dir name.
+    {"./1.2.pegasus/", ""},
+    // Windows relative path and non-empty dir name.
+    {".\\1.2.pegasus", "1.2.pegasus"},
+    // Windows relative path and empty dir name.
+    {".\\1.2.pegasus\\", ""},
+};
+
+INSTANTIATE_TEST_SUITE_P(ReplicaDirTest,
+                         GetReplicaDirNameTest,
+                         testing::ValuesIn(get_replica_dir_name_tests));
+
+} // namespace dsn::replication