flink-core/src/test/java/org/apache/flink/api/common/accumulators/LongMinimumTest.java

/*
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 * 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,
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 * See the License for the specific language governing permissions and
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 */

package org.apache.flink.api.common.accumulators;

import org.junit.Test;

import static org.junit.Assert.assertEquals;

public class LongMinimumTest {

	@Test
	public void testGet() {
		LongMinimum min = new LongMinimum();
		assertEquals(Long.MAX_VALUE, min.getLocalValue().longValue());
	}

	@Test
	public void testResetLocal() {
		LongMinimum min = new LongMinimum();
		long value = 9876543210L;

		min.add(value);
		assertEquals(value, min.getLocalValue().longValue());

		min.resetLocal();
		assertEquals(Long.MAX_VALUE, min.getLocalValue().longValue());
	}

	@Test
	public void testAdd() {
		LongMinimum min = new LongMinimum();

		min.add(1234567890);
		min.add(9876543210L);
		min.add(-9876543210L);
		min.add(-1234567890);

		assertEquals(-9876543210L, min.getLocalValue().longValue());
	}

	@Test
	public void testMerge() {
		LongMinimum min1 = new LongMinimum();
		min1.add(1234567890987654321L);

		LongMinimum min2 = new LongMinimum();
		min2.add(5678909876543210123L);

		min2.merge(min1);
		assertEquals(1234567890987654321L, min2.getLocalValue().longValue());

		min1.merge(min2);
		assertEquals(1234567890987654321L, min1.getLocalValue().longValue());
	}

	@Test
	public void testClone() {
		LongMinimum min = new LongMinimum();
		long value = 4242424242424242L;

		min.add(value);

		LongMinimum clone = min.clone();
		assertEquals(value, clone.getLocalValue().longValue());
	}
}