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 *  to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne;

import org.apache.cayenne.access.DataContext;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.query.ObjectIdQuery;
import org.apache.cayenne.testdo.relationships_to_one_fk.ToOneFK1;
import org.apache.cayenne.testdo.relationships_to_one_fk.ToOneFK2;
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.Test;

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

/**
 * Tests the behavior of one-to-one relationship where to-one is pointing to an FK.
 */
@UseServerRuntime(CayenneProjects.RELATIONSHIPS_TO_ONE_FK_PROJECT)
public class CDOOneToOneFKIT extends ServerCase {

    @Inject
    private DataContext context;

    @Inject
    private DataContext context1;

    @Test
    public void testReadRelationship() {
        ToOneFK2 src = context.newObject(ToOneFK2.class);
        ToOneFK1 target = context.newObject(ToOneFK1.class);
        src.setToOneToFK(target);
        context.commitChanges();

        context.invalidateObjects(src, target);

        ToOneFK2 src1 = (ToOneFK2) Cayenne.objectForPK(context, src.getObjectId());
        assertNotNull(src1.getToOneToFK());
        // resolve HOLLOW
        assertSame(src1, src1.getToOneToFK().getToPK());

        context.invalidateObjects(src1, src1.getToOneToFK());

        ToOneFK1 target2 = (ToOneFK1) Cayenne.objectForPK(context, target.getObjectId());
        assertNotNull(target2.getToPK());

        // resolve HOLLOW
        assertSame(target2, target2.getToPK().getToOneToFK());
    }

    @Test
    public void test2Null() throws Exception {
        ToOneFK2 src = context.newObject(ToOneFK2.class);
        context.commitChanges();

        // test database data
        ObjectIdQuery refetch = new ObjectIdQuery(
                src.getObjectId(),
                false,
                ObjectIdQuery.CACHE_REFRESH);
        ToOneFK2 src2 = (ToOneFK2) Cayenne.objectForQuery(context1, refetch);

        // *** TESTING THIS ***
        assertNull(src2.getToOneToFK());
    }

    @Test
    public void testReplaceNull1() throws Exception {
        ToOneFK2 src = context.newObject(ToOneFK2.class);
        context.commitChanges();

        // test database data
        ObjectIdQuery refetch = new ObjectIdQuery(
                src.getObjectId(),
                false,
                ObjectIdQuery.CACHE_REFRESH);
        ToOneFK2 src2 = (ToOneFK2) Cayenne.objectForQuery(context1, refetch);
        assertEquals(src.getObjectId(), src2.getObjectId());

        // *** TESTING THIS ***
        src2.setToOneToFK(null);
        assertNull(src2.getToOneToFK());
    }

    @Test
    public void testReplaceNull2() throws Exception {
        ToOneFK2 src = context.newObject(ToOneFK2.class);
        context.commitChanges();

        ToOneFK1 target = context.newObject(ToOneFK1.class);

        // *** TESTING THIS ***
        src.setToOneToFK(target);

        // test before save
        assertSame(target, src.getToOneToFK());

        // do save
        context.commitChanges();

        // test database data
        ObjectIdQuery refetch = new ObjectIdQuery(
                src.getObjectId(),
                false,
                ObjectIdQuery.CACHE_REFRESH);
        ToOneFK2 src2 = (ToOneFK2) Cayenne.objectForQuery(context1, refetch);
        ToOneFK1 target2 = src2.getToOneToFK();
        assertNotNull(target2);
        assertEquals(src.getObjectId(), src2.getObjectId());
        assertEquals(target.getObjectId(), target2.getObjectId());
    }

    @Test
    public void testNewAdd() throws Exception {
        ToOneFK2 src = context.newObject(ToOneFK2.class);
        ToOneFK1 target = context.newObject(ToOneFK1.class);

        // *** TESTING THIS ***
        src.setToOneToFK(target);

        // test before save
        assertSame(target, src.getToOneToFK());

        // do save
        context.commitChanges();

        // test database data
        ObjectIdQuery refetch = new ObjectIdQuery(
                src.getObjectId(),
                false,
                ObjectIdQuery.CACHE_REFRESH);
        ToOneFK2 src2 = (ToOneFK2) Cayenne.objectForQuery(context1, refetch);
        ToOneFK1 target2 = src2.getToOneToFK();
        assertNotNull(target2);
        assertEquals(src.getObjectId(), src2.getObjectId());
        assertEquals(target.getObjectId(), target2.getObjectId());
    }

    @Test
    public void testTakeObjectSnapshotDependentFault() throws Exception {
        ToOneFK2 src = context.newObject(ToOneFK2.class);
        ToOneFK1 target = context.newObject(ToOneFK1.class);
        src.setToOneToFK(target);
        context.commitChanges();

        ObjectIdQuery refetch = new ObjectIdQuery(
                src.getObjectId(),
                false,
                ObjectIdQuery.CACHE_REFRESH);
        ToOneFK2 src2 = (ToOneFK2) Cayenne.objectForQuery(context1, refetch);

        assertTrue(src2.readPropertyDirectly("toOneToFK") instanceof Fault);

        // test that taking a snapshot does not trigger a fault, and generally works well
        context.currentSnapshot(src2);
        assertTrue(src2.readPropertyDirectly("toOneToFK") instanceof Fault);
    }

    @Test
    public void testDelete() throws Exception {
        ToOneFK2 src = context.newObject(ToOneFK2.class);
        ToOneFK1 target = context.newObject(ToOneFK1.class);
        src.setToOneToFK(target);
        context.commitChanges();

        src.setToOneToFK(null);
        context.deleteObjects(target);
        context.commitChanges();

        // test database data

        ObjectIdQuery refetch = new ObjectIdQuery(
                src.getObjectId(),
                false,
                ObjectIdQuery.CACHE_REFRESH);
        ToOneFK2 src2 = (ToOneFK2) Cayenne.objectForQuery(context1, refetch);
        assertNull(src.getToOneToFK());
        assertEquals(src.getObjectId(), src2.getObjectId());
    }
}