/*
 * Licensed to STRATIO (C) under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership.  The STRATIO (C) 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 com.stratio.cassandra.lucene.util;

import org.apache.cassandra.db.marshal.CompositeType;
import org.apache.cassandra.db.marshal.Int32Type;
import org.apache.cassandra.db.marshal.UTF8Type;
import org.apache.cassandra.utils.ByteBufferUtil;
import org.apache.lucene.util.BytesRef;
import org.junit.Test;

import java.nio.ByteBuffer;

import static junit.framework.Assert.*;

/**
 * Class for testing {@link ByteBufferUtils}.
 *
 * @author Andres de la Pena {@literal <adelapena@stratio.com>}
 */
public class ByteBufferUtilsTest {

    @Test
    public void testBytesRef() throws Exception {
        CompositeType type = CompositeType.getInstance(UTF8Type.instance, Int32Type.instance);
        ByteBuffer in = type.decompose("monkey", 1);
        BytesRef bytesRef = ByteBufferUtils.bytesRef(in);
        ByteBuffer out = ByteBufferUtils.byteBuffer(bytesRef);
        assertEquals("Failing conversion between ByteBuffer and BytesRef", 0, ByteBufferUtil.compareUnsigned(in, out));
    }

    @Test
    public void testIsEmptyTrue() {
        ByteBuffer bb = ByteBuffer.allocate(0);
        assertTrue(ByteBufferUtils.isEmpty(bb));
    }

    @Test
    public void testIsEmptyFalse() {
        ByteBuffer bb = ByteBuffer.allocate(10);
        assertFalse(ByteBufferUtils.isEmpty(bb));
    }

    @Test
    public void testSplit() {
        ByteBuffer bb = UTF8Type.instance.decompose("test");
        assertEquals("Must be split to one element", 1, ByteBufferUtils.split(bb, UTF8Type.instance).length);
    }

    @Test
    public void testSplitComposite() {
        CompositeType type = CompositeType.getInstance(UTF8Type.instance, Int32Type.instance);
        ByteBuffer bb = type.builder()
                            .add(UTF8Type.instance.decompose("1"))
                            .add(Int32Type.instance.decompose(1))
                            .build();
        assertEquals("Must be split to two elements", 2, ByteBufferUtils.split(bb, type).length);
    }

    @Test
    public void testToString() {
        ByteBuffer bb = UTF8Type.instance.decompose("test");
        String string = ByteBufferUtils.toString(bb, UTF8Type.instance);
        assertEquals("Abstract type string conversion is failing", "test", string);
    }

    @Test
    public void testToStringComposite() throws Exception {
        CompositeType type = CompositeType.getInstance(UTF8Type.instance, Int32Type.instance);
        ByteBuffer bb = type.decompose("monkey", 1);
        String string = ByteBufferUtils.toString(bb, type);
        assertEquals("Composite type string conversion is failing", "monkey:1", string);
    }
}