src/paimon/common/utils/scope_guard_test.cpp

/*
 * 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 "paimon/common/utils/scope_guard.h"

#include <memory>

#include "gtest/gtest.h"

namespace paimon::test {

// Test case: ScopeGuard triggers the function when going out of scope
TEST(ScopeGuardTest, ScopeGuardTriggersOnDestruction) {
    bool triggered = false;

    {
        ScopeGuard guard([&triggered]() { triggered = true; });
    }

    // At this point, the scope guard should have triggered the lambda
    EXPECT_TRUE(triggered);
}

// Test case: ScopeGuard does not trigger after calling Release()
TEST(ScopeGuardTest, ScopeGuardDoesNotTriggerAfterRelease) {
    bool triggered = false;

    {
        ScopeGuard guard([&triggered]() { triggered = true; });
        guard.Release();  // Release the guard, it should not trigger
    }

    // The scope guard should not trigger the lambda after release
    EXPECT_FALSE(triggered);
}

// Test case: ScopeGuard without any function (empty guard)
TEST(ScopeGuardTest, ScopeGuardEmptyGuardDoesNothing) {
    bool triggered = false;

    {
        ScopeGuard guard([]() {});  // Empty function
    }

    // Nothing should happen
    EXPECT_FALSE(triggered);
}

// Test case: ScopeGuard with a complex action
TEST(ScopeGuardTest, ScopeGuardComplexAction) {
    bool triggered = false;

    {
        ScopeGuard guard([&triggered]() {
            triggered = true;
            // Simulate some complex cleanup or action
        });
    }

    // The scope guard should trigger the complex action
    EXPECT_TRUE(triggered);
}

}  // namespace paimon::test