CharComparatorTest.java example

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/*
 * 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 java.util.Random;

import org.apache.flink.api.common.typeutils.ComparatorTestBase;
import org.apache.flink.api.common.typeutils.TypeComparator;
import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.api.common.typeutils.base.CharComparator;
import org.apache.flink.api.common.typeutils.base.CharSerializer;

public class CharComparatorTest extends ComparatorTestBase<Character> {

	@Override
	protected TypeComparator<Character> createComparator(boolean ascending) {
		return new CharComparator(ascending);
	}

	@Override
	protected TypeSerializer<Character> createSerializer() {
		return new CharSerializer();
	}

	@Override
	protected Character[] getSortedTestData() {
		Random rnd = new Random(874597969123412338L);
		int rndChar = rnd.nextInt(Character.MAX_VALUE);
		if(rndChar<0){
			rndChar=-rndChar;
		}
		if(rndChar==(int)Character.MIN_VALUE){
			rndChar+=2;
		}
		if(rndChar==(int)Character.MAX_VALUE){
			rndChar-=2;
		}
		return new Character[]{
			Character.MIN_VALUE,
			(char)rndChar,
			(char)(rndChar+1),
			Character.MAX_VALUE			
		};
	}
}