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 *  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
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 *  KIND, either express or implied.  See the License for the
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package org.apache.cayenne.util.concurrentlinkedhashmap;

import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;

public class ConcurrentLinkedHashMapTest {

	@Test
	public void testPutGet() {
		ConcurrentLinkedHashMap<String, Object> m = new ConcurrentLinkedHashMap.Builder<String, Object>()
				.maximumWeightedCapacity(10).build();

		assertEquals(0, m.size());
		m.put("k1", 100);
		assertEquals(1, m.size());
		assertNull(m.get("nosuchkey"));
		assertEquals(100, m.get("k1"));

		m.put("k2", 200);
		assertEquals(2, m.size());
		assertEquals(200, m.get("k2"));
	}

	@Test
	public void testLRU() {
		ConcurrentLinkedHashMap<String, Object> m = new ConcurrentLinkedHashMap.Builder<String, Object>()
				.maximumWeightedCapacity(5).build();

		assertEquals(0, m.size());
		m.put("k1", 100);
		assertEquals(1, m.size());
		m.put("k2", 101);
		assertEquals(2, m.size());
		m.put("k3", 102);
		assertEquals(3, m.size());
		m.put("k4", 103);
		assertEquals(4, m.size());
		m.put("k5", 104);
		assertEquals(5, m.size());
		m.put("k6", 105);
		assertEquals(5, m.size());
		m.put("k7", 106);
		assertEquals(5, m.size());
		m.put("k8", 107);
		assertEquals(5, m.size());

		m.remove("k6");
		assertEquals(4, m.size());

	}
}