120 lines
3.8 KiB
JavaScript
120 lines
3.8 KiB
JavaScript
import Cluster from '../../../../../src/ol/source/Cluster.js';
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import EventType from '../../../../../src/ol/events/EventType.js';
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import Feature from '../../../../../src/ol/Feature.js';
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import LineString from '../../../../../src/ol/geom/LineString.js';
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import Point from '../../../../../src/ol/geom/Point.js';
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import Polygon from '../../../../../src/ol/geom/Polygon.js';
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import Source from '../../../../../src/ol/source/Source.js';
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import VectorSource from '../../../../../src/ol/source/Vector.js';
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import {get as getProjection} from '../../../../../src/ol/proj.js';
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describe('ol.source.Cluster', function () {
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describe('constructor', function () {
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it('returns a cluster source', function () {
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const source = new Cluster({
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projection: getProjection('EPSG:4326'),
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source: new VectorSource(),
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});
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expect(source).to.be.a(Source);
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expect(source).to.be.a(Cluster);
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expect(source.getDistance()).to.be(20);
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});
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});
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describe('#loadFeatures', function () {
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const extent = [-1, -1, 1, 1];
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const projection = getProjection('EPSG:3857');
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it('clusters a source with point features', function () {
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const source = new Cluster({
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source: new VectorSource({
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features: [
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new Feature(new Point([0, 0])),
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new Feature(new Point([0, 0])),
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],
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}),
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});
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source.loadFeatures(extent, 1, projection);
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expect(source.getFeatures().length).to.be(1);
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expect(source.getFeatures()[0].get('features').length).to.be(2);
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});
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it('clusters with a custom geometryFunction', function () {
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const source = new Cluster({
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geometryFunction: function (feature) {
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const geom = feature.getGeometry();
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if (geom.getType() == 'Point') {
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return geom;
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} else if (geom.getType() == 'Polygon') {
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return geom.getInteriorPoint();
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}
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return null;
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},
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source: new VectorSource({
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features: [
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new Feature(new Point([0, 0])),
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new Feature(
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new LineString([
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[0, 0],
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[1, 1],
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])
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),
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new Feature(
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new Polygon([
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[
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[-1, -1],
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[-1, 1],
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[1, 1],
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[1, -1],
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[-1, -1],
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],
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])
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),
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],
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}),
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});
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source.loadFeatures(extent, 1, projection);
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expect(source.getFeatures().length).to.be(1);
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expect(source.getFeatures()[0].get('features').length).to.be(2);
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});
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});
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describe('#setDistance', function () {
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it('changes the distance value', function () {
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const source = new Cluster({
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distance: 100,
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source: new VectorSource(),
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});
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expect(source.getDistance()).to.be(100);
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source.setDistance(10);
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expect(source.getDistance()).to.be(10);
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});
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});
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});
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describe('#setSource', function () {
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it('removes the change listener from the old source', function () {
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const source = new VectorSource();
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const clusterSource = new Cluster({
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source: source,
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});
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expect(source.hasListener(EventType.CHANGE)).to.be(true);
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clusterSource.setSource(null);
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expect(source.hasListener(EventType.CHANGE)).to.be(false);
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});
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it('properly removes the previous features', function () {
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const source = new Cluster({
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source: new VectorSource({
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features: [new Feature(new Point([0, 0]))],
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}),
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});
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const projection = getProjection('EPSG:3857');
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const extent = [-1, -1, 1, 1];
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source.loadFeatures(extent, 1, projection);
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expect(source.features.length).to.be(1);
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source.setSource(null);
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expect(source.features.length).to.be(0);
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});
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});
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