/*
 * Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
 *
 * Licensed 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.hazelcast.map.impl.recordstore;

import com.hazelcast.config.MapConfig;
import com.hazelcast.core.EntryView;
import com.hazelcast.core.PartitioningStrategy;
import com.hazelcast.internal.serialization.impl.DefaultSerializationServiceBuilder;
import com.hazelcast.map.impl.record.AbstractRecord;
import com.hazelcast.map.impl.record.DataRecordFactory;
import com.hazelcast.map.impl.record.Record;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.spi.serialization.SerializationService;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.annotation.ParallelTest;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import static com.hazelcast.util.JVMUtil.REFERENCE_COST_IN_BYTES;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;

@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class LazyEntryViewFromRecordTest {

    private static final int ENTRY_VIEW_COST_IN_BYTES = 97 + 4 * REFERENCE_COST_IN_BYTES;

    private final String key = "key";
    private final String value = "value";

    private SerializationService serializationService;
    private Record<Data> recordInstance;
    private EntryView view;

    @Before
    public void setUp() throws Exception {
        view = createDefaultEntryView();
    }

    /**
     * Returns an entry-view instance populated with default values of fields.
     */
    private EntryView createDefaultEntryView() {
        PartitioningStrategy mockPartitioningStrategy = mock(PartitioningStrategy.class);
        MapConfig mapConfig = new MapConfig();
        serializationService = new DefaultSerializationServiceBuilder().build();
        DataRecordFactory dataRecordFactory
                = new DataRecordFactory(mapConfig, serializationService, mockPartitioningStrategy);
        recordInstance = dataRecordFactory.newRecord(value);
        ((AbstractRecord) recordInstance).setKey(serializationService.toData(key));
        return new LazyEntryViewFromRecord(recordInstance, serializationService);
    }

    @Test
    public void test_getKey() throws Exception {
        assertEquals(key, view.getKey());
    }

    @Test
    public void test_getValue() throws Exception {
        assertEquals(value, view.getValue());
    }

    @Test
    public void test_getCost() throws Exception {
        assertEquals(ENTRY_VIEW_COST_IN_BYTES, view.getCost());
    }

    @Test
    public void test_getCreationTime() throws Exception {
        assertEquals(0, view.getCreationTime());
    }

    @Test
    public void test_getExpirationTime() throws Exception {
        assertEquals(0, view.getExpirationTime());
    }

    @Test
    public void test_getHits() throws Exception {
        assertEquals(0, view.getHits());
    }

    @Test
    public void test_getLastAccessTime() throws Exception {
        assertEquals(0, view.getLastAccessTime());
    }

    @Test
    public void test_getLastStoredTime() throws Exception {
        assertEquals(0, view.getLastStoredTime());
    }

    @Test
    public void test_getLastUpdateTime() throws Exception {
        assertEquals(0, view.getLastUpdateTime());
    }

    @Test
    public void test_getVersion() throws Exception {
        assertEquals(0, view.getVersion());
    }

    @Test
    public void test_getTtl() throws Exception {
        assertEquals(0, view.getTtl());
    }

    @Test
    public void test_getRecord() throws Exception {
        assertEquals(recordInstance, ((LazyEntryViewFromRecord) view).getRecord());
    }

    @Test
    public void test_equals() throws Exception {
        EntryView entryView = createDefaultEntryView();

        assertTrue(view.equals(entryView) && entryView.equals(view));
    }

    @Test
    public void test_equals_whenSameReference() throws Exception {
        assertTrue(view.equals(view));
    }

    @Test
    public void test_equals_whenSuppliedObjectIsNotEntryView() throws Exception {
        assertFalse(view.equals(this));
    }

    @Test
    public void test_hashCode() throws Exception {
        EntryView entryView = createDefaultEntryView();

        assertEquals(entryView.hashCode(), view.hashCode());
    }

    @Test
    public void test_toString() throws Exception {
        String expected = "EntryView{key=" + view.getKey()
                + ", value=" + view.getValue()
                + ", cost=" + view.getCost()
                + ", version=" + view.getVersion()
                + ", creationTime=" + view.getCreationTime()
                + ", expirationTime=" + view.getExpirationTime()
                + ", hits=" + view.getHits()
                + ", lastAccessTime=" + view.getLastAccessTime()
                + ", lastStoredTime=" + view.getLastStoredTime()
                + ", lastUpdateTime=" + view.getLastUpdateTime()
                + ", ttl=" + view.getTtl()
                + '}';

        assertEquals(expected, view.toString());
    }
}