modules/core/src/test/java/org/apache/ignite/lang/utils/GridBoundedConcurrentLinkedHashMapSelfTest.java

/*
 * 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.
 */

package org.apache.ignite.lang.utils;

import java.util.Iterator;
import java.util.Map;
import org.apache.ignite.internal.util.GridBoundedConcurrentLinkedHashMap;
import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
import org.junit.Test;

/**
 * Test for {@link GridBoundedConcurrentLinkedHashMap}.
 */
public class GridBoundedConcurrentLinkedHashMapSelfTest extends GridCommonAbstractTest {
    /** Bound. */
    private static final int MAX = 3;

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testBound() throws Exception {
        Map<Integer, Integer> map = new GridBoundedConcurrentLinkedHashMap<>(MAX);

        for (int i = 1; i <= 10; i++) {
            map.put(i, i);

            if (i <= MAX)
                assert map.size() == i;
            else
                assert map.size() == MAX;
        }

        assert map.size() == MAX;

        Iterator<Integer> it = map.values().iterator();

        assert it.next() == 8;
        assert it.next() == 9;
        assert it.next() == 10;
    }
}