1 files changed, 154 insertions, 0 deletions
diff --git a/src/mongo/db/serverless/serverless_operation_lock_registry_test.cpp b/src/mongo/db/serverless/serverless_operation_lock_registry_test.cpp
new file mode 100644
index 00000000000..9d95b3b7bc7
--- /dev/null
+++ b/src/mongo/db/serverless/serverless_operation_lock_registry_test.cpp
@@ -0,0 +1,154 @@
+/**
+ *    Copyright (C) 2022-present MongoDB, Inc.
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the Server Side Public License, version 1,
+ *    as published by MongoDB, Inc.
+ *
+ *    This program 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
+ *    Server Side Public License for more details.
+ *
+ *    You should have received a copy of the Server Side Public License
+ *    along with this program. If not, see
+ *    <http://www.mongodb.com/licensing/server-side-public-license>.
+ *
+ *    As a special exception, the copyright holders give permission to link the
+ *    code of portions of this program with the OpenSSL library under certain
+ *    conditions as described in each individual source file and distribute
+ *    linked combinations including the program with the OpenSSL library. You
+ *    must comply with the Server Side Public License in all respects for
+ *    all of the code used other than as permitted herein. If you modify file(s)
+ *    with this exception, you may extend this exception to your version of the
+ *    file(s), but you are not obligated to do so. If you do not wish to do so,
+ *    delete this exception statement from your version. If you delete this
+ *    exception statement from all source files in the program, then also delete
+ *    it in the license file.
+ */
+
+#include "mongo/db/serverless/serverless_operation_lock_registry.h"
+#include "mongo/unittest/death_test.h"
+#include "mongo/unittest/log_test.h"
+#include "mongo/unittest/unittest.h"
+
+namespace mongo {
+
+TEST(ServerlessOperationLockRegistryTest, InsertRemoveOne) {
+    ServerlessOperationLockRegistry registry;
+
+    auto id = UUID::gen();
+    registry.acquireLock(ServerlessOperationLockRegistry::LockType::kShardSplit, id);
+    registry.releaseLock(ServerlessOperationLockRegistry::LockType::kShardSplit, id);
+
+    ASSERT_FALSE(registry.getActiveOperationType_forTest());
+}
+
+DEATH_TEST(ServerlessOperationLockRegistryTest,
+           InsertSameIdTwice,
+           "Cannot acquire the serverless lock twice for the same operationId.") {
+    ServerlessOperationLockRegistry registry;
+
+    auto id = UUID::gen();
+    registry.acquireLock(ServerlessOperationLockRegistry::LockType::kShardSplit, id);
+    registry.acquireLock(ServerlessOperationLockRegistry::LockType::kShardSplit, id);
+}
+
+TEST(ServerlessOperationLockRegistryTest, AcquireDifferentNamespaceFail) {
+    ServerlessOperationLockRegistry registry;
+
+    auto id = UUID::gen();
+    registry.acquireLock(ServerlessOperationLockRegistry::LockType::kShardSplit, id);
+
+    ASSERT_THROWS_CODE(
+        registry.acquireLock(ServerlessOperationLockRegistry::LockType::kTenantDonor, UUID::gen()),
+        DBException,
+        ErrorCodes::ConflictingServerlessOperation);
+}
+
+DEATH_TEST(ServerlessOperationLockRegistryTest,
+           ReleaseDifferentNsTriggersInvariant,
+           "Cannot release a serverless lock that is not owned by the given lock type.") {
+    ServerlessOperationLockRegistry registry;
+
+    auto id = UUID::gen();
+    registry.acquireLock(ServerlessOperationLockRegistry::LockType::kShardSplit, id);
+    registry.releaseLock(ServerlessOperationLockRegistry::LockType::kTenantDonor, id);
+}
+
+
+DEATH_TEST(ServerlessOperationLockRegistryTest,
+           ReleaseDifferentIdTriggersInvariant,
+           "Cannot release a serverless lock if the given operationId does not own the lock.") {
+    ServerlessOperationLockRegistry registry;
+
+    registry.acquireLock(ServerlessOperationLockRegistry::LockType::kShardSplit, UUID::gen());
+    registry.releaseLock(ServerlessOperationLockRegistry::LockType::kShardSplit, UUID::gen());
+}
+
+TEST(ServerlessOperationLockRegistryTest, ClearReleasesAllLocks) {
+    ServerlessOperationLockRegistry registry;
+
+    registry.acquireLock(ServerlessOperationLockRegistry::LockType::kShardSplit, UUID::gen());
+    registry.acquireLock(ServerlessOperationLockRegistry::LockType::kShardSplit, UUID::gen());
+
+    registry.clear();
+
+    // Verify the lock has been released.
+    ASSERT_FALSE(registry.getActiveOperationType_forTest());
+}
+
+TEST(ServerlessOperationLockRegistryTest, LockIsReleasedWhenAllInstanceAreRemoved) {
+    ServerlessOperationLockRegistry registry;
+
+    std::vector<UUID> ids;
+    for (int i = 0; i < 5; ++i) {
+        ids.push_back(UUID::gen());
+    }
+
+    for (auto& id : ids) {
+        registry.acquireLock(ServerlessOperationLockRegistry::LockType::kShardSplit, id);
+    }
+
+    // Verify the lock is held;
+    ASSERT_EQ(*registry.getActiveOperationType_forTest(),
+              ServerlessOperationLockRegistry::LockType::kShardSplit);
+
+
+    for (auto& id : ids) {
+        registry.releaseLock(ServerlessOperationLockRegistry::LockType::kShardSplit, id);
+    }
+
+    // Verify the lock has been released.
+    ASSERT_FALSE(registry.getActiveOperationType_forTest());
+}
+
+TEST(ServerlessOperationLockRegistryTest, LockIsNotReleasedWhenNotAllInstanceAreRemoved) {
+    ServerlessOperationLockRegistry registry;
+
+    std::vector<UUID> ids;
+    for (int i = 0; i < 5; ++i) {
+        ids.push_back(UUID::gen());
+    }
+
+    for (auto& id : ids) {
+        registry.acquireLock(ServerlessOperationLockRegistry::LockType::kShardSplit, id);
+    }
+    // Add an additional id;
+    registry.acquireLock(ServerlessOperationLockRegistry::LockType::kShardSplit, UUID::gen());
+
+    // Verify the lock is held;
+    ASSERT_EQ(*registry.getActiveOperationType_forTest(),
+              ServerlessOperationLockRegistry::LockType::kShardSplit);
+
+    for (auto& id : ids) {
+        registry.releaseLock(ServerlessOperationLockRegistry::LockType::kShardSplit, id);
+    }
+
+    // Verify the lock is held;
+    ASSERT_EQ(*registry.getActiveOperationType_forTest(),
+              ServerlessOperationLockRegistry::LockType::kShardSplit);
+}
+
+
+}  // namespace mongo