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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.di.Inject;
import org.apache.cayenne.graph.GraphEvent;
import org.apache.cayenne.testdo.mt.ClientMtTable1;
import org.apache.cayenne.unit.di.client.ClientCase;
import org.apache.cayenne.unit.di.server.CayenneProjects;
import org.apache.cayenne.unit.di.server.UseServerRuntime;
import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;

@UseServerRuntime(CayenneProjects.MULTI_TIER_PROJECT)
public class CayenneContextMergeHandlerIT extends ClientCase {

    @Inject
    protected CayenneContext context;

    @Test
    public void testShouldProcessEvent() {

        CayenneContextMergeHandler handler = new CayenneContextMergeHandler(context);

        // 1. Our context initiated the sync:
        // src == channel && postedBy == context
        GraphEvent e1 = new GraphEvent(context.getChannel(), context, null);
        assertFalse(handler.shouldProcessEvent(e1));

        // 2. Another context initiated the sync:
        // postedBy != context && source == channel
        GraphEvent e2 = new GraphEvent(context.getChannel(), mock(ObjectContext.class), null);
        assertTrue(handler.shouldProcessEvent(e2));

        // 2.1 Another object initiated the sync:
        // postedBy != context && source == channel
        GraphEvent e21 = new GraphEvent(context.getChannel(), new Object(), null);
        assertTrue(handler.shouldProcessEvent(e21));

        // 3. Another channel initiated the sync:
        // postedBy == ? && source != channel
        GraphEvent e3 = new GraphEvent(new MockDataChannel(), new Object(), null);
        assertFalse(handler.shouldProcessEvent(e3));

        // 4. inactive
        GraphEvent e4 = new GraphEvent(context.getChannel(), mock(ObjectContext.class), null);
        handler.active = false;
        assertFalse(handler.shouldProcessEvent(e4));
    }

    @Test
    public void testNodePropertyChanged() {

        ClientMtTable1 o1 = context.newObject(ClientMtTable1.class);

        CayenneContextMergeHandler handler = new CayenneContextMergeHandler(context);

        assertNull(o1.getGlobalAttribute1Direct());

        handler.nodePropertyChanged(o1.getObjectId(), ClientMtTable1.GLOBAL_ATTRIBUTE1_PROPERTY, null, "abc");
        assertEquals("abc", o1.getGlobalAttribute1Direct());

        handler.nodePropertyChanged(o1.getObjectId(), ClientMtTable1.GLOBAL_ATTRIBUTE1_PROPERTY, "abc", "xyz");

        assertEquals("xyz", o1.getGlobalAttribute1Direct());

        // block if old value is different
        handler.nodePropertyChanged(o1.getObjectId(), ClientMtTable1.GLOBAL_ATTRIBUTE1_PROPERTY, "123", "mnk");

        assertEquals("xyz", o1.getGlobalAttribute1Direct());

        handler.nodePropertyChanged(o1.getObjectId(), ClientMtTable1.GLOBAL_ATTRIBUTE1_PROPERTY, "xyz", null);

        assertNull(o1.getGlobalAttribute1Direct());
    }
}