/*
 * 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.jena.dboe.index.testlib;

import static org.apache.jena.dboe.index.testlib.IndexTestLib.testDelete;
import static org.apache.jena.dboe.index.testlib.IndexTestLib.testIndexContents;
import static org.apache.jena.dboe.index.testlib.IndexTestLib.testInsert;
import static org.apache.jena.dboe.test.RecordLib.intToRecord;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;

import org.apache.jena.dboe.base.record.Record;
import org.apache.jena.dboe.index.Index;
import org.apache.jena.dboe.test.RecordLib;
import org.junit.After ;
import org.junit.Test ;

//import org.apache.jena.tdb.base.record.RecordLib;

public abstract class AbstractTestIndex
{
    Index index = null;

    @After public void afterTest() {
        if ( index != null )
            index.close();
        index = null;
    }

    // ---- Overridable maker
    protected abstract Index makeIndex(int kLen, int vLen);

    @Test public void __basic() {
        makeIndex(4,0);
    }

    @Test public void index_ins_0() {
        // Empty tree
        int[] keys = {};
        test(keys);
    }

    @Test public void index_ins_1() {
        int[] keys = {1};
        test(keys);
    }

    @Test public void index_ins_2() {
        int[] keys = new int[20];
        for ( int i = 0; i < keys.length ; i++ )
            keys[i] = i;
        test(keys);
    }

    @Test public void index_ins_3() {
        int[] keys = new int[20];
        for ( int i = keys.length-1; i >= 0 ; i-- )
            keys[i] = i;
        test(keys);
    }

    @Test public void index_ins_4() {
        int[] keys = new int[10];
        for ( int i = 0; i < keys.length ; i++ )
            keys[i] = 1<<i;
        test(keys);
    }

    @Test public void index_ins_5() {
        int[] keys = new int[10];
        for ( int i = keys.length-1; i >= 0 ; i-- )
            keys[i] = 1<<i;
        test(keys);
    }

    @Test public void index_find_1() {
        int[] keys = {1};
        Index index = test(keys);
        Record r = intToRecord(1, RecordLib.TestRecordLength);
        r = index.find(r);
        assertNotNull(r);
    }

    @Test public void index_find_2() {
        int[] keys = {1,2,3,4,5,6,7,8,9};
        Index index = test(keys);
        Record r = intToRecord(20, RecordLib.TestRecordLength);
        r = index.find(r);
        assertNull(r);
    }

    @Test public void index_del_1() {
        int[] keys1 = {0, 1, 2};
        int[] keys2 = {0, 1, 2};
        int[] keys3 = {};
        test(keys1, keys2, keys3);
    }

    @Test public void index_del_2() {
        int[] keys1 = {0, 1, 2};
        int[] keys2 = {0, 1};
        int[] keys3 = {2};
        test(keys1, keys2, keys3);
    }

    @Test public void index_del_3() {
        int[] keys1 = {0, 1, 2};
        int[] keys2 = {0, 99};
        int[] keys3 = {2, 1};
        test(keys1, keys2, keys3);
    }

    private Index test(int[] insKeys, int[] delKeys, int[] expected) {
        index = makeIndex(4,0);
        testInsert(index, insKeys);
        long x = index.size();
        if ( x >= 0 )
            assertEquals(insKeys.length, x);

        if ( delKeys != null ) {
            testDelete(index, delKeys);

        }

        if ( expected != null )
            testIndexContents(index, expected);
        return index;
    }

    private Index test(int[] keys) {
        return test(keys, null, keys);
    }
}
