AbstractTreeMapTest.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
 *
 *      https://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.commons.collections4;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.util.TreeMap;

import org.apache.commons.collections4.map.AbstractMapTest;
import org.junit.jupiter.api.Test;

/**
 * Tests TreeMap.
 *
 * @param <K> the key type.
 * @param <V> the value type.
 */
public abstract class AbstractTreeMapTest<K, V> extends AbstractMapTest<TreeMap<K, V>, K, V> {

    @Override
    public boolean isAllowNullKey() {
        return false;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public abstract TreeMap<K, V> makeObject();

    @Test
    void testNewMap() {
        final TreeMap<K, V> map = makeObject();
        assertTrue(map.isEmpty(), "New map is empty");
        assertEquals(0, map.size(), "New map has size zero");
    }

    @Test
    @SuppressWarnings("unchecked")
    void testSearch() {
        final TreeMap<K, V> map = makeObject();
        map.put((K) "first", (V) "First Item");
        map.put((K) "second", (V) "Second Item");
        assertEquals("First Item", map.get("first"),
                "Top item is 'Second Item'");
        assertEquals("Second Item", map.get("second"),
                "Next Item is 'First Item'");
    }

}