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package org.apache.cayenne;
import junit.framework.TestCase;
import org.apache.cayenne.graph.CompoundDiff;
import org.apache.cayenne.graph.GraphDiff;
import org.apache.cayenne.graph.NodeCreateOperation;
import org.apache.cayenne.map.EntityResolver;
import org.apache.cayenne.remote.hessian.service.HessianUtil;
import org.apache.cayenne.util.Util;
public class ObjectContextChangeLogTest extends TestCase {
public void testReset() {
ObjectContextChangeLog recorder = new ObjectContextChangeLog();
assertNotNull(recorder.getDiffs());
assertTrue(recorder.getDiffs().isNoop());
recorder.addOperation(new NodeCreateOperation(new Object()));
assertNotNull(recorder.getDiffs());
assertFalse(recorder.getDiffs().isNoop());
recorder.reset();
assertNotNull(recorder.getDiffs());
assertTrue(recorder.getDiffs().isNoop());
// now test that a diff stored before "clear" is not affected by 'clear'
recorder.addOperation(new NodeCreateOperation(new Object()));
GraphDiff diff = recorder.getDiffs();
assertFalse(diff.isNoop());
recorder.reset();
assertFalse(diff.isNoop());
}
public void testGetDiffs() {
// assert that after returning, the diffs array won't get modified by operation
// recorder
ObjectContextChangeLog recorder = new ObjectContextChangeLog();
recorder.addOperation(new NodeCreateOperation(new Object()));
CompoundDiff diff = (CompoundDiff) recorder.getDiffs();
assertEquals(1, diff.getDiffs().size());
recorder.addOperation(new NodeCreateOperation(new Object()));
assertEquals(1, diff.getDiffs().size());
CompoundDiff diff2 = (CompoundDiff) recorder.getDiffs();
assertEquals(2, diff2.getDiffs().size());
}
public void testGetDiffsSerializable() throws Exception {
ObjectContextChangeLog recorder = new ObjectContextChangeLog();
recorder.addOperation(new NodeCreateOperation(new ObjectId("test")));
CompoundDiff diff = (CompoundDiff) recorder.getDiffs();
Object clone = Util.cloneViaSerialization(diff);
assertNotNull(clone);
assertTrue(clone instanceof CompoundDiff);
CompoundDiff d1 = (CompoundDiff) clone;
assertEquals(1, d1.getDiffs().size());
}
public void testGetDiffsSerializableWithHessian() throws Exception {
ObjectContextChangeLog recorder = new ObjectContextChangeLog();
// id must be a serializable object
recorder.addOperation(new NodeCreateOperation("id-string"));
CompoundDiff diff = (CompoundDiff) recorder.getDiffs();
Object clone = HessianUtil.cloneViaClientServerSerialization(diff, new EntityResolver());
assertNotNull(clone);
assertTrue(clone instanceof CompoundDiff);
CompoundDiff d1 = (CompoundDiff) clone;
assertEquals(1, d1.getDiffs().size());
}
}