/*
 * 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.types;

import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.util.Random;

import org.apache.flink.core.memory.DataInputView;
import org.apache.flink.core.memory.DataInputViewStreamWrapper;
import org.apache.flink.core.memory.DataOutputView;
import org.apache.flink.core.memory.DataOutputViewStreamWrapper;

import org.apache.flink.util.TestLogger;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

public class RecordITCase extends TestLogger {
	
	private static final long SEED = 354144423270432543L;
	private final Random rand = new Random(RecordITCase.SEED);
	
	private DataInputView in;
	private DataOutputView out;

	@Before
	public void setUp() throws Exception {
		PipedInputStream pipedInput = new PipedInputStream(32*1024*1024);
		this.in = new DataInputViewStreamWrapper(pipedInput);
		this.out = new DataOutputViewStreamWrapper(new PipedOutputStream(pipedInput));
	}
	
	@Test
	public void massiveRandomBlackBoxTests() {
		try {
			// random test with records with a small number of fields
			for (int i = 0; i < 100000; i++) {
				final Value[] fields = RecordTest.createRandomValues(this.rand, 0, 32);
				RecordTest.blackboxTestRecordWithValues(fields, this.rand, this.in, this.out);
			}
			
			// random tests with records with a moderately large number of fields
			for (int i = 0; i < 2000; i++) {
				final Value[] fields = RecordTest.createRandomValues(this.rand, 20, 200);
				RecordTest.blackboxTestRecordWithValues(fields, this.rand, this.in, this.out);
			}
			
			// random tests with records with very many fields
			for (int i = 0; i < 200; i++) {
				final Value[] fields = RecordTest.createRandomValues(this.rand, 500, 2000);
				RecordTest.blackboxTestRecordWithValues(fields, this.rand, this.in, this.out);
			}
		} catch (Throwable t) {
			Assert.fail("Test failed due to an exception: " + t.getMessage());
		}
	}
}