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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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package org.apache.cayenne.access;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyZeroInteractions;

import org.apache.cayenne.ObjectId;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.graph.GraphChangeHandler;
import org.apache.cayenne.graph.GraphDiff;
import org.apache.cayenne.testdo.testmap.Artist;
import org.apache.cayenne.testdo.testmap.NullTestEntity;
import org.apache.cayenne.testdo.testmap.Painting;
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;

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

	@Inject
	private DataContext context;

	@Test
	public void testFlushToParent_Commit_New() {

		// commit new object
		Artist a = context.newObject(Artist.class);
		a.setArtistName("Test");

		assertTrue(context.hasChanges());

		ObjectId beforeId = a.getObjectId();
		GraphDiff diff = context.flushToParent(true);
		ObjectId afterId = a.getObjectId();

		assertNotNull(diff);
		assertFalse(context.hasChanges());
		assertNotEquals(beforeId, afterId);

		GraphChangeHandler diffChecker = mock(GraphChangeHandler.class);

		diff.apply(diffChecker);

		verify(diffChecker).nodeIdChanged(beforeId, afterId);
		verifyZeroInteractions(diffChecker);

	}

	@Test
	public void testFlushToParent_Commit_Mix() {

		Artist a = context.newObject(Artist.class);
		a.setArtistName("Test");
		context.flushToParent(true);

		// commit a mix of new and modified
		Painting p = context.newObject(Painting.class);
		p.setPaintingTitle("PT");
		p.setToArtist(a);
		a.setArtistName("Test_");

		ObjectId beforeId = p.getObjectId();
		GraphDiff diff = context.flushToParent(true);
		ObjectId afterId = p.getObjectId();

		assertNotNull(diff);
		assertFalse(context.hasChanges());

		GraphChangeHandler diffChecker = mock(GraphChangeHandler.class);

		diff.apply(diffChecker);
		verify(diffChecker).nodeIdChanged(beforeId, afterId);
		verifyZeroInteractions(diffChecker);
	}

	@Test
	public void testFlushToParent_NewNoAttributes() {

		// commit new object with uninitialized attributes

		context.newObject(NullTestEntity.class);

		assertTrue(context.hasChanges());

		GraphDiff diff3 = context.flushToParent(true);
		assertNotNull(diff3);
		assertFalse(context.hasChanges());
	}
}