flink-core/src/test/java/org/apache/flink/api/common/typeutils/base/InstantSerializerTest.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.flink.api.common.typeutils.base;

import org.apache.flink.api.common.typeutils.SerializerTestBase;
import org.apache.flink.api.common.typeutils.TypeSerializer;

import java.time.Instant;
import java.util.Random;

/**
 * A test for the {@link InstantSerializer}.
 */
public class InstantSerializerTest extends SerializerTestBase<Instant> {
	@Override
	protected TypeSerializer<Instant> createSerializer() {
		return new InstantSerializer();
	}

	@Override
	protected int getLength() {
		return 12;
	}

	@Override
	protected Class<Instant> getTypeClass() {
		return Instant.class;
	}


	private static long rndSeconds(Random rnd) {
		return (long) (Instant.MIN.getEpochSecond()
			+ rnd.nextDouble() * (Instant.MAX.getEpochSecond() - Instant.MIN.getEpochSecond()));
	}

	private static int rndNanos(Random rnd) {
		return (int) (rnd.nextDouble() * 999999999);
	}

	@Override
	protected Instant[] getTestData() {
		final Random rnd = new Random(874597969123412341L);

		return new Instant[] {
			Instant.EPOCH, Instant.MIN, Instant.MAX,
			Instant.ofEpochSecond(rndSeconds(rnd),	rndNanos(rnd)),
			Instant.ofEpochSecond(1534135584,949495),
			Instant.ofEpochSecond(56090783)
		};
	}
}