src/paimon/common/utils/long_counter_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/long_counter.h"

#include "gtest/gtest.h"

namespace paimon::test {

// Test case: Test default constructor and initial value
TEST(LongCounterTest, DefaultConstructor) {
    LongCounter counter;
    EXPECT_EQ(counter.GetValue(), 0);
}

// Test case: Test constructor with initial value
TEST(LongCounterTest, ConstructorWithInitialValue) {
    LongCounter counter(10);
    EXPECT_EQ(counter.GetValue(), 10);
}

// Test case: Test Add method
TEST(LongCounterTest, Add) {
    LongCounter counter(10);
    counter.Add(5);
    EXPECT_EQ(counter.GetValue(), 15);

    counter.Add(-3);
    EXPECT_EQ(counter.GetValue(), 12);
}

// Test case: Test Reset method
TEST(LongCounterTest, Reset) {
    LongCounter counter(10);
    counter.Add(5);
    EXPECT_EQ(counter.GetValue(), 15);

    counter.Reset();
    EXPECT_EQ(counter.GetValue(), 0);
}

// Test case: Test Merge method
TEST(LongCounterTest, Merge) {
    LongCounter counter1(10);
    LongCounter counter2(20);

    counter1.Merge(counter2);
    EXPECT_EQ(counter1.GetValue(), 30);
}

// Test case: Test ToString method
TEST(LongCounterTest, ToString) {
    LongCounter counter(42);
    EXPECT_EQ(counter.ToString(), "LongCounter 42");

    counter.Reset();
    EXPECT_EQ(counter.ToString(), "LongCounter 0");
}

}  // namespace paimon::test