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 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne.dba;

import org.apache.cayenne.access.DataNode;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.map.DbEntity;
import org.apache.cayenne.unit.UnitDbAdapter;
import org.apache.cayenne.unit.di.server.CayenneProjects;
import org.apache.cayenne.unit.di.server.ServerCase;
import org.apache.cayenne.unit.di.server.UseServerRuntime;
import org.junit.Before;
import org.junit.Test;

import java.util.ArrayList;
import java.util.List;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

@UseServerRuntime(CayenneProjects.TESTMAP_PROJECT)
public class PkGeneratorIT extends ServerCase {

    @Inject
    private UnitDbAdapter accessStackAdapter;

    @Inject
    private DataNode node;

    private PkGenerator pkGenerator;
    private DbEntity paintingEntity;

    @Before
    public void setUp() throws Exception {
        pkGenerator = node.getAdapter().getPkGenerator();
        paintingEntity = node.getEntityResolver().getDbEntity("PAINTING");

        List<DbEntity> list = new ArrayList<DbEntity>();
        list.add(paintingEntity);
        pkGenerator.createAutoPk(node, list);
        pkGenerator.reset();
    }

    @Test
    public void testGeneratePkForDbEntity() throws Exception {
        List<Object> pkList = new ArrayList<Object>();

        int testSize = (pkGenerator instanceof JdbcPkGenerator)
                ? ((JdbcPkGenerator) pkGenerator).getPkCacheSize() * 2
                : 25;
        if (testSize < 25) {
            testSize = 25;
        }

        for (int i = 0; i < testSize; i++) {
            Object pk = pkGenerator.generatePk(node, paintingEntity
                    .getPrimaryKeys()
                    .iterator()
                    .next());
            assertNotNull(pk);
            assertTrue(pk instanceof Number);

            // check that the number is continuous
            // of course this assumes a single-threaded test
            if (accessStackAdapter.supportsBatchPK() && pkList.size() > 0) {
                Number last = (Number) pkList.get(pkList.size() - 1);
                assertEquals(last.intValue() + 1, ((Number) pk).intValue());
            }

            pkList.add(pk);
        }
    }
}