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 *  * 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.usergrid.persistence.graph.serialization.impl.shard.impl.comparators;


import java.util.UUID;

import org.junit.Test;

import org.apache.usergrid.persistence.core.util.IdGenerator;
import org.apache.usergrid.persistence.graph.impl.SimpleMarkedEdge;
import org.apache.usergrid.persistence.model.entity.Id;
import org.apache.usergrid.persistence.model.util.UUIDGenerator;

import static org.apache.usergrid.persistence.core.util.IdGenerator.createId;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;


public class TargetDirectedEdgeDescendingComparatorTest {

    final TargetDirectedEdgeDescendingComparator comp = TargetDirectedEdgeDescendingComparator.INSTANCE;


    @Test
    public void sameEdges() {

        final Id sourceId = IdGenerator.createId( "source" );
        final Id targetId = IdGenerator.createId( "target" );
        final String type = "type";
        final long timestamp = 10000;

        final SimpleMarkedEdge markedEdge1 = new SimpleMarkedEdge( sourceId, type, targetId, timestamp, true );
        final SimpleMarkedEdge markedEdge2 = new SimpleMarkedEdge( sourceId, type, targetId, timestamp, true );


        int compare = comp.compare( markedEdge1, markedEdge2 );

        assertEquals( 0, compare );

        compare = comp.compare( markedEdge2, markedEdge1 );

        assertEquals( 0, compare );
    }


    @Test
    public void timestampDifferent() {

        final Id sourceId = IdGenerator.createId( "source" );
        final Id targetId = IdGenerator.createId( "target" );
        final String type = "type";
        final long timestamp = 10000;

        final SimpleMarkedEdge markedEdge1 = new SimpleMarkedEdge( sourceId, type, targetId, timestamp, true );
        final SimpleMarkedEdge markedEdge2 = new SimpleMarkedEdge( sourceId, type, targetId, timestamp + 1, true );


        //marked edge 1 is less than timestamp, it should be considered "greater"
        int compare = comp.compare( markedEdge1, markedEdge2 );

        assertEquals( 1, compare );

        compare = comp.compare( markedEdge2, markedEdge1 );

        assertEquals( -1, compare );
    }


    @Test
    public void uuidDifferent() {

        final Id sourceId = IdGenerator.createId( "source" );
        final Id targetId1 = IdGenerator.createId( "target" );
        final Id targetId2 = IdGenerator.createId( "target" );
        final String type = "type";
        final long timestamp = 10000;

        final SimpleMarkedEdge markedEdge1 = new SimpleMarkedEdge( sourceId, type, targetId1, timestamp, true );
        final SimpleMarkedEdge markedEdge2 = new SimpleMarkedEdge( sourceId, type, targetId2, timestamp, true );


        //marked edge 1 uuid is a is less than target uuid timestamp, it should be considered "greater"
        int compare = comp.compare( markedEdge1, markedEdge2 );

        assertTrue( compare > 0 );

        compare = comp.compare( markedEdge2, markedEdge1 );

        assertTrue( compare < 0 );
    }


    @Test
    public void idTypeDifferent() {

        final UUID targetId = UUIDGenerator.newTimeUUID();

        final Id sourceId = IdGenerator.createId( "source" );
        final Id targetId1 = IdGenerator.createId( targetId, "target1" );
        final Id targetId2 = IdGenerator.createId( targetId, "target2" );
        final String type = "type";
        final long timestamp = 10000;

        final SimpleMarkedEdge markedEdge1 = new SimpleMarkedEdge( sourceId, type, targetId2, timestamp, true );
        final SimpleMarkedEdge markedEdge2 = new SimpleMarkedEdge( sourceId, type, targetId1, timestamp, true );


        //marked edge 1 is less than timestamp, it should be considered "greater"
        int compare = comp.compare( markedEdge1, markedEdge2 );

        assertEquals( 1, compare );

        compare = comp.compare( markedEdge2, markedEdge1 );

        assertEquals( -1, compare );
    }
}