/*
 * 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 static org.junit.Assert.*;

import java.util.ArrayList;

import org.apache.flink.core.memory.DataInputView;
import org.apache.flink.core.memory.DataOutputView;
import org.junit.Test;

public class JavaToValueConverterTest {

	@Test
	public void testJavaToValueConversion() {
		try {
			assertNull(JavaToValueConverter.convertBoxedJavaType(null));
			
			assertEquals(new StringValue("123Test"), JavaToValueConverter.convertBoxedJavaType("123Test"));
			assertEquals(new ByteValue((byte) 44), JavaToValueConverter.convertBoxedJavaType((byte) 44));
			assertEquals(new ShortValue((short) 10000), JavaToValueConverter.convertBoxedJavaType((short) 10000));
			assertEquals(new IntValue(3567564), JavaToValueConverter.convertBoxedJavaType(3567564));
			assertEquals(new LongValue(767692734), JavaToValueConverter.convertBoxedJavaType(767692734L));
			assertEquals(new FloatValue(17.5f), JavaToValueConverter.convertBoxedJavaType(17.5f));
			assertEquals(new DoubleValue(3.1415926), JavaToValueConverter.convertBoxedJavaType(3.1415926));
			assertEquals(new BooleanValue(true), JavaToValueConverter.convertBoxedJavaType(true));
			assertEquals(new CharValue('@'), JavaToValueConverter.convertBoxedJavaType('@'));
			
			try {
				JavaToValueConverter.convertBoxedJavaType(new ArrayList<Object>());
				fail("Accepted invalid type.");
			} catch (IllegalArgumentException e) {
				// expected
			}
		}
		catch (Exception e) {
			e.printStackTrace();
			fail(e.getMessage());
		}
	}
	
	@Test
	public void testValueToJavaConversion() {
		try {
			assertNull(JavaToValueConverter.convertValueType(null));
			
			assertEquals("123Test", JavaToValueConverter.convertValueType(new StringValue("123Test")));
			assertEquals((byte) 44, JavaToValueConverter.convertValueType(new ByteValue((byte) 44)));
			assertEquals((short) 10000, JavaToValueConverter.convertValueType(new ShortValue((short) 10000)));
			assertEquals(3567564, JavaToValueConverter.convertValueType(new IntValue(3567564)));
			assertEquals(767692734L, JavaToValueConverter.convertValueType(new LongValue(767692734)));
			assertEquals(17.5f, JavaToValueConverter.convertValueType(new FloatValue(17.5f)));
			assertEquals(3.1415926, JavaToValueConverter.convertValueType(new DoubleValue(3.1415926)));
			assertEquals(true, JavaToValueConverter.convertValueType(new BooleanValue(true)));
			assertEquals('@', JavaToValueConverter.convertValueType(new CharValue('@')));
			
			try {
				JavaToValueConverter.convertValueType(new MyValue());
				fail("Accepted invalid type.");
			} catch (IllegalArgumentException e) {
				// expected
			}
		}
		catch (Exception e) {
			e.printStackTrace();
			fail(e.getMessage());
		}
	}
	
	private static final class MyValue implements Value {
		private static final long serialVersionUID = 1L;

		@Override
		public void write(DataOutputView out) {}

		@Override
		public void read(DataInputView in) {}
	}
}