// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.data.osm;

import java.util.Arrays;
import java.util.HashSet;

import org.junit.Assert;
import org.junit.Test;

public class OsmPrimitiveTest {

    private void compareReferrers(OsmPrimitive actual, OsmPrimitive... expected) {
        Assert.assertEquals(new HashSet<OsmPrimitive>(Arrays.asList(expected)),
                new HashSet<OsmPrimitive>(actual.getReferrers()));
    }

    private DataSet dataSet = new DataSet();

    @Test
    public void simpleReferrersTest() {
        Node n1 = new Node();
        Way w1 = new Way();
        w1.addNode(n1);
        dataSet.addPrimitive(n1);
        dataSet.addPrimitive(w1);
        compareReferrers(n1, w1);
    }

    @Test
    public void addAndRemoveReferrer() {
        Node n1 = new Node();
        Node n2 = new Node();
        Way w1 = new Way();
        w1.addNode(n1);
        w1.addNode(n2);
        w1.addNode(n1);
        w1.removeNode(n1);
        dataSet.addPrimitive(n1);
        dataSet.addPrimitive(n2);
        dataSet.addPrimitive(w1);
        compareReferrers(n1);
        compareReferrers(n2, w1);
    }

    @Test
    public void multipleReferrers() {
        Node n1 = new Node();
        Way w1 = new Way();
        Way w2 = new Way();
        Relation r1 = new Relation();
        w1.addNode(n1);
        w2.addNode(n1);
        r1.addMember(new RelationMember("", n1));
        dataSet.addPrimitive(n1);
        dataSet.addPrimitive(w1);
        dataSet.addPrimitive(w2);
        dataSet.addPrimitive(r1);
        compareReferrers(n1, w1, w2, r1);
    }

    @Test
    public void removeMemberFromRelationReferrerTest() {
        Node n1 = new Node();
        Relation r1 = new Relation();
        r1.addMember(new RelationMember("", n1));
        r1.addMember(new RelationMember("", n1));
        r1.removeMember(0);
        dataSet.addPrimitive(n1);
        dataSet.addPrimitive(r1);
        compareReferrers(n1, r1);
    }

    @Test
    public void setRelationMemberReferrerTest() {
        Node n1 = new Node();
        Node n2 = new Node();
        Relation r1 = new Relation();
        Relation r2 = new Relation();
        r1.addMember(new RelationMember("", n1));
        r2.addMember(new RelationMember("", n2));
        r2.setMember(0, r1.getMember(0));
        dataSet.addPrimitive(n1);
        dataSet.addPrimitive(n2);
        dataSet.addPrimitive(r1);
        dataSet.addPrimitive(r2);
        compareReferrers(n1, r1, r2);
        compareReferrers(n2);
    }

    @Test
    public void removePrimitiveReferrerTest() {
        Node n1 = new Node();
        Way w1 = new Way();
        w1.addNode(n1);
        w1.setDeleted(true);
        dataSet.addPrimitive(n1);
        compareReferrers(n1);
        w1.setDeleted(false);
        dataSet.addPrimitive(w1);

        compareReferrers(n1, w1);

        Relation r1 = new Relation();
        r1.addMember(new RelationMember("", w1));
        r1.setDeleted(true);
        dataSet.addPrimitive(r1);
        compareReferrers(w1);
        r1.setDeleted(false);
        compareReferrers(w1, r1);
    }

}