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 *  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
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 *
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package org.apache.cayenne.query;

import org.apache.cayenne.map.ObjEntity;
import org.apache.cayenne.testdo.testmap.Artist;
import org.junit.Test;

import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.fail;

public class AbstractQueryTest {

    @Test
    public void testSetRootEntityName() {
        AbstractQuery query = new MockAbstractQuery();
        assertNull(query.getRoot());
        query.setRoot("SomeEntity");
        assertSame("SomeEntity", query.getRoot());
    }

    @Test
    public void testSetRootObjEntity() {
        AbstractQuery query = new MockAbstractQuery();

        assertNull(query.getRoot());
        ObjEntity e = new ObjEntity("ABC");
        query.setRoot(e);
        assertSame(e, query.getRoot());
    }

    @Test
    public void testSetRootClass() {
        AbstractQuery query = new MockAbstractQuery();
        assertNull(query.getRoot());
        query.setRoot(Artist.class);
        assertSame(Artist.class, query.getRoot());
    }

    @Test
    public void testSetInvalidRoot() {
        AbstractQuery query = new MockAbstractQuery();
        assertNull(query.getRoot());
        try {
            query.setRoot(new Integer(1));
            fail("Should not be able to set the root to an Integer");
        }
        catch (IllegalArgumentException e) {
        }
    }
}