034e0be76f
Previously features were indexed by uid only when they did not have a defined id. A new method was added: `getFeatureByUid`. This is not part of the public API. This will facilitate the lookup of features for hit detection.
839 lines
26 KiB
JavaScript
839 lines
26 KiB
JavaScript
import {listen} from '../../../../src/ol/events.js';
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import Collection from '../../../../src/ol/Collection.js';
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import Feature from '../../../../src/ol/Feature.js';
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import Map from '../../../../src/ol/Map.js';
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import View from '../../../../src/ol/View.js';
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import Point from '../../../../src/ol/geom/Point.js';
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import LineString from '../../../../src/ol/geom/LineString.js';
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import VectorLayer from '../../../../src/ol/layer/Vector.js';
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import {bbox as bboxStrategy} from '../../../../src/ol/loadingstrategy.js';
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import {get as getProjection, transformExtent, fromLonLat} from '../../../../src/ol/proj.js';
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import VectorSource from '../../../../src/ol/source/Vector.js';
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import GeoJSON from '../../../../src/ol/format/GeoJSON.js';
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import {getUid} from '../../../../src/ol/util.js';
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describe('ol.source.Vector', function() {
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let pointFeature;
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let infiniteExtent;
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beforeEach(function() {
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pointFeature = new Feature(new Point([0, 0]));
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infiniteExtent = [-Infinity, -Infinity, Infinity, Infinity];
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});
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describe('when empty', function() {
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let vectorSource;
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beforeEach(function() {
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vectorSource = new VectorSource();
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});
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describe('#forEachFeatureInExtent', function() {
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it('does not call the callback', function() {
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const f = sinon.spy();
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vectorSource.forEachFeatureInExtent(infiniteExtent, f);
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expect(f).not.to.be.called();
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});
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});
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describe('#getFeaturesInExtent', function() {
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it('returns an empty array', function() {
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const features = vectorSource.getFeaturesInExtent(infiniteExtent);
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expect(features).to.be.an(Array);
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expect(features).to.be.empty();
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});
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});
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describe('#isEmpty', function() {
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it('returns true', function() {
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expect(vectorSource.isEmpty()).to.be(true);
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});
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});
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describe('#addFeature', function() {
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it('can add a single point feature', function() {
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vectorSource.addFeature(pointFeature);
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const features = vectorSource.getFeaturesInExtent(infiniteExtent);
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expect(features).to.be.an(Array);
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expect(features).to.have.length(1);
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expect(features[0]).to.be(pointFeature);
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});
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it('fires a change event', function() {
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const listener = sinon.spy();
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listen(vectorSource, 'change', listener);
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vectorSource.addFeature(pointFeature);
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expect(listener).to.be.called();
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});
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it('adds same id features only once', function() {
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const source = new VectorSource();
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const feature1 = new Feature();
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feature1.setId('1');
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const feature2 = new Feature();
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feature2.setId('1');
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source.addFeature(feature1);
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source.addFeature(feature2);
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expect(source.getFeatures().length).to.be(1);
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});
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});
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describe('#hasFeature', function() {
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it('returns true for added feature without id', function() {
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const feature = new Feature();
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vectorSource.addFeature(feature);
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expect(vectorSource.hasFeature(feature)).to.be(true);
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});
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it('returns true for added feature with id', function() {
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const feature = new Feature();
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feature.setId('1');
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vectorSource.addFeature(feature);
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expect(vectorSource.hasFeature(feature)).to.be(true);
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});
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it('return false for removed feature', function() {
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const feature = new Feature();
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vectorSource.addFeature(feature);
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vectorSource.removeFeature(feature);
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expect(vectorSource.hasFeature(feature)).to.be(false);
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});
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it('returns false for non-added feature', function() {
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const feature = new Feature();
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expect(vectorSource.hasFeature(feature)).to.be(false);
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});
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});
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});
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describe('when populated with 3 features', function() {
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const features = [];
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let vectorSource;
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beforeEach(function() {
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features.push(new Feature(new LineString([[0, 0], [10, 10]])));
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features.push(new Feature(new Point([0, 10])));
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features.push(new Feature(new Point([10, 5])));
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vectorSource = new VectorSource({
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features: features
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});
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});
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describe('#getClosestFeatureToCoordinate', function() {
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it('returns the expected feature', function() {
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const feature = vectorSource.getClosestFeatureToCoordinate([1, 9]);
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expect(feature).to.be(features[1]);
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});
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it('returns the expected feature when a filter is used', function() {
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const feature = vectorSource.getClosestFeatureToCoordinate([1, 9], function(feature) {
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return feature.getGeometry().getType() == 'LineString';
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});
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expect(feature).to.be(features[0]);
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});
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});
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});
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describe('clear and refresh', function() {
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let map, source, spy;
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beforeEach(function(done) {
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source = new VectorSource({
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format: new GeoJSON(),
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url: 'spec/ol/source/vectorsource/single-feature.json'
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});
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const target = document.createElement('div');
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target.style.width = target.style.height = '100px';
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document.body.appendChild(target);
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map = new Map({
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target: target,
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layers: [
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new VectorLayer({
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source: source
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})
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],
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view: new View({
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center: [0, 0],
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zoom: 0
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})
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});
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map.once('rendercomplete', function() {
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spy = sinon.spy(source, 'loader_');
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done();
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});
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});
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afterEach(function() {
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if (spy) {
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source.loader_.restore();
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}
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document.body.removeChild(map.getTargetElement());
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map.setTarget(null);
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});
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it('#refresh() reloads from server', function(done) {
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expect(source.getFeatures()).to.have.length(1);
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map.once('rendercomplete', function() {
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expect(source.getFeatures()).to.have.length(1);
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expect(spy.callCount).to.be(1);
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done();
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});
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source.refresh();
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});
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it('#clear() removes all features from the source', function(done) {
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expect(source.getFeatures()).to.have.length(1);
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map.once('rendercomplete', function() {
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expect(source.getFeatures()).to.have.length(0);
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expect(spy.callCount).to.be(0);
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done();
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});
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source.clear();
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});
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it('After #setUrl(), refresh() loads from the new url', function(done) {
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source.loader_.restore();
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spy = undefined;
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expect(source.getFeatures()).to.have.length(1);
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const oldCoordinates = source.getFeatures()[0].getGeometry().getCoordinates();
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map.on('rendercomplete', function() {
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expect(source.getFeatures()).to.have.length(1);
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const newCoordinates = source.getFeatures()[0].getGeometry().getCoordinates();
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expect(newCoordinates).to.not.eql(oldCoordinates);
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done();
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});
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source.setUrl('spec/ol/data/point.json');
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source.refresh();
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});
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});
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describe('when populated with 10 random points and a null', function() {
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let features;
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let vectorSource;
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beforeEach(function() {
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features = [];
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let i;
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for (i = 0; i < 10; ++i) {
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features[i] =
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new Feature(new Point([Math.random(), Math.random()]));
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}
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features.push(new Feature(null));
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vectorSource = new VectorSource({
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features: features
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});
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});
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describe('#clear', function() {
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it('removes all features using fast path', function() {
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const removeFeatureSpy = sinon.spy();
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listen(vectorSource, 'removefeature', removeFeatureSpy);
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const clearSourceSpy = sinon.spy();
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listen(vectorSource, 'clear', clearSourceSpy);
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vectorSource.clear(true);
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expect(vectorSource.getFeatures()).to.eql([]);
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expect(vectorSource.isEmpty()).to.be(true);
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expect(removeFeatureSpy).not.to.be.called();
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expect(removeFeatureSpy.callCount).to.be(0);
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expect(clearSourceSpy).to.be.called();
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expect(clearSourceSpy.callCount).to.be(1);
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});
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it('removes all features using slow path', function() {
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const removeFeatureSpy = sinon.spy();
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listen(vectorSource, 'removefeature', removeFeatureSpy);
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const clearSourceSpy = sinon.spy();
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listen(vectorSource, 'clear', clearSourceSpy);
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vectorSource.clear();
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expect(vectorSource.getFeatures()).to.eql([]);
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expect(vectorSource.isEmpty()).to.be(true);
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expect(removeFeatureSpy).to.be.called();
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expect(removeFeatureSpy.callCount).to.be(features.length);
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expect(clearSourceSpy).to.be.called();
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expect(clearSourceSpy.callCount).to.be(1);
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});
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});
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describe('#forEachFeatureInExtent', function() {
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it('is called the expected number of times', function() {
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const f = sinon.spy();
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vectorSource.forEachFeatureInExtent(infiniteExtent, f);
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expect(f.callCount).to.be(10);
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});
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it('allows breaking out', function() {
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let count = 0;
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const result = vectorSource.forEachFeatureInExtent(infiniteExtent,
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function(f) {
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return ++count == 5;
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});
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expect(result).to.be(true);
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expect(count).to.be(5);
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});
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});
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describe('#getFeaturesInExtent', function() {
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it('returns the expected number of features', function() {
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expect(vectorSource.getFeaturesInExtent(infiniteExtent)).
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to.have.length(10);
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});
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});
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describe('#isEmpty', function() {
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it('returns false', function() {
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expect(vectorSource.isEmpty()).to.be(false);
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});
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});
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describe('#removeFeature', function() {
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it('works as expected', function() {
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let i;
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for (i = features.length - 1; i >= 0; --i) {
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vectorSource.removeFeature(features[i]);
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expect(vectorSource.getFeaturesInExtent(infiniteExtent)).
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have.length(i);
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}
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});
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it('fires a change event', function() {
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const listener = sinon.spy();
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listen(vectorSource, 'change', listener);
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vectorSource.removeFeature(features[0]);
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expect(listener).to.be.called();
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});
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it('fires a removefeature event', function() {
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const listener = sinon.spy();
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listen(vectorSource, 'removefeature', listener);
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vectorSource.removeFeature(features[0]);
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expect(listener).to.be.called();
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});
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});
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describe('modifying a feature\'s geometry', function() {
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it('keeps the R-Tree index up to date', function() {
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expect(vectorSource.getFeaturesInExtent([0, 0, 1, 1])).
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to.have.length(10);
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features[0].getGeometry().setCoordinates([100, 100]);
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expect(vectorSource.getFeaturesInExtent([0, 0, 1, 1])).
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to.have.length(9);
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features[0].getGeometry().setCoordinates([0.5, 0.5]);
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expect(vectorSource.getFeaturesInExtent([0, 0, 1, 1])).
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to.have.length(10);
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});
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});
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describe('setting a features geometry', function() {
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it('keeps the R-Tree index up to date', function() {
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expect(vectorSource.getFeaturesInExtent([0, 0, 1, 1])).
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to.have.length(10);
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features[0].setGeometry(new Point([100, 100]));
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expect(vectorSource.getFeaturesInExtent([0, 0, 1, 1])).
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to.have.length(9);
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});
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});
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});
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describe('tracking changes to features', function() {
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let vectorSource;
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beforeEach(function() {
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vectorSource = new VectorSource();
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});
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it('keeps its index up-to-date', function() {
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const feature = new Feature(new Point([1, 1]));
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vectorSource.addFeature(feature);
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expect(vectorSource.getFeaturesInExtent([0, 0, 2, 2])).
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to.eql([feature]);
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feature.getGeometry().setCoordinates([3, 3]);
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expect(vectorSource.getFeaturesInExtent([0, 0, 2, 2])).
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to.be.empty();
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expect(vectorSource.getFeaturesInExtent([2, 2, 4, 4])).
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to.eql([feature]);
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});
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it('handles features with null geometries', function() {
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const feature = new Feature(null);
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vectorSource.addFeature(feature);
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expect(vectorSource.getFeatures()).to.eql([feature]);
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});
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it('handles features with geometries changing from null', function() {
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const feature = new Feature(null);
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vectorSource.addFeature(feature);
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expect(vectorSource.getFeatures()).to.eql([feature]);
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feature.setGeometry(new Point([1, 1]));
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expect(vectorSource.getFeaturesInExtent([0, 0, 2, 2])).
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to.eql([feature]);
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expect(vectorSource.getFeatures()).to.eql([feature]);
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});
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it('handles features with geometries changing to null', function() {
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const feature = new Feature(new Point([1, 1]));
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vectorSource.addFeature(feature);
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expect(vectorSource.getFeatures()).to.eql([feature]);
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expect(vectorSource.getFeaturesInExtent([0, 0, 2, 2])).
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to.eql([feature]);
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feature.setGeometry(null);
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expect(vectorSource.getFeaturesInExtent([0, 0, 2, 2])).to.be.empty();
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expect(vectorSource.getFeatures()).to.eql([feature]);
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});
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it('fires a change event when setting a feature\'s property', function() {
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const feature = new Feature(new Point([1, 1]));
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vectorSource.addFeature(feature);
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const listener = sinon.spy();
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listen(vectorSource, 'change', listener);
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feature.set('foo', 'bar');
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expect(listener).to.be.called();
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});
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it('fires a changefeature event when updating a feature', function() {
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const feature = new Feature(new Point([1, 1]));
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vectorSource.addFeature(feature);
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const listener = sinon.spy(function(event) {
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expect(event.feature).to.be(feature);
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});
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vectorSource.on('changefeature', listener);
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feature.setStyle(null);
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expect(listener).to.be.called();
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});
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});
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describe('#getFeatureById()', function() {
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let source;
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beforeEach(function() {
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source = new VectorSource();
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});
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it('returns a feature by id', function() {
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const feature = new Feature();
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feature.setId('foo');
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source.addFeature(feature);
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expect(source.getFeatureById('foo')).to.be(feature);
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});
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it('returns a feature by id (set after add)', function() {
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const feature = new Feature();
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source.addFeature(feature);
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expect(source.getFeatureById('foo')).to.be(null);
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feature.setId('foo');
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expect(source.getFeatureById('foo')).to.be(feature);
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});
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it('returns null when no feature is found', function() {
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const feature = new Feature();
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feature.setId('foo');
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source.addFeature(feature);
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expect(source.getFeatureById('bar')).to.be(null);
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});
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it('returns null after removing feature', function() {
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const feature = new Feature();
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feature.setId('foo');
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source.addFeature(feature);
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expect(source.getFeatureById('foo')).to.be(feature);
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source.removeFeature(feature);
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expect(source.getFeatureById('foo')).to.be(null);
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});
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it('returns null after unsetting id', function() {
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const feature = new Feature();
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feature.setId('foo');
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source.addFeature(feature);
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expect(source.getFeatureById('foo')).to.be(feature);
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feature.setId(undefined);
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expect(source.getFeatureById('foo')).to.be(null);
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});
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it('returns null after clear', function() {
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const feature = new Feature();
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feature.setId('foo');
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source.addFeature(feature);
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expect(source.getFeatureById('foo')).to.be(feature);
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source.clear();
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expect(source.getFeatureById('foo')).to.be(null);
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});
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it('returns null when no features are indexed', function() {
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expect(source.getFeatureById('foo')).to.be(null);
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source.addFeature(new Feature());
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expect(source.getFeatureById('foo')).to.be(null);
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});
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it('returns correct feature after add/remove/add', function() {
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expect(source.getFeatureById('foo')).to.be(null);
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const first = new Feature();
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first.setId('foo');
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source.addFeature(first);
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expect(source.getFeatureById('foo')).to.be(first);
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source.removeFeature(first);
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expect(source.getFeatureById('foo')).to.be(null);
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const second = new Feature();
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second.setId('foo');
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source.addFeature(second);
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expect(source.getFeatureById('foo')).to.be(second);
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});
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it('returns correct feature after add/change', function() {
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expect(source.getFeatureById('foo')).to.be(null);
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const feature = new Feature();
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feature.setId('foo');
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source.addFeature(feature);
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expect(source.getFeatureById('foo')).to.be(feature);
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feature.setId('bar');
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expect(source.getFeatureById('foo')).to.be(null);
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expect(source.getFeatureById('bar')).to.be(feature);
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});
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});
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describe('#getFeatureByUid()', function() {
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let source;
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beforeEach(function() {
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source = new VectorSource();
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});
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it('returns a feature with an id', function() {
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const feature = new Feature();
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feature.setId('abcd');
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source.addFeature(feature);
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expect(source.getFeatureByUid(getUid(feature))).to.be(feature);
|
|
});
|
|
|
|
it('returns a feature without id', function() {
|
|
const feature = new Feature();
|
|
source.addFeature(feature);
|
|
expect(source.getFeatureByUid(getUid(feature))).to.be(feature);
|
|
});
|
|
|
|
it('returns null when no feature is found', function() {
|
|
const feature = new Feature();
|
|
feature.setId('abcd');
|
|
source.addFeature(feature);
|
|
const wrongId = 'abcd';
|
|
expect(source.getFeatureByUid(wrongId)).to.be(null);
|
|
});
|
|
|
|
it('returns null after removing feature', function() {
|
|
const feature = new Feature();
|
|
feature.setId('abcd');
|
|
source.addFeature(feature);
|
|
const uid = getUid(feature);
|
|
expect(source.getFeatureByUid(uid)).to.be(feature);
|
|
source.removeFeature(feature);
|
|
expect(source.getFeatureByUid(uid)).to.be(null);
|
|
});
|
|
|
|
it('returns null after clear', function() {
|
|
const feature = new Feature();
|
|
feature.setId('abcd');
|
|
source.addFeature(feature);
|
|
const uid = getUid(feature);
|
|
expect(source.getFeatureByUid(uid)).to.be(feature);
|
|
source.clear();
|
|
expect(source.getFeatureByUid(uid)).to.be(null);
|
|
});
|
|
|
|
it('returns null when no features are present', function() {
|
|
expect(source.getFeatureByUid('abcd')).to.be(null);
|
|
});
|
|
|
|
});
|
|
|
|
describe('#loadFeatures', function() {
|
|
|
|
describe('with the "bbox" strategy', function() {
|
|
|
|
|
|
it('requests the view extent plus render buffer', function(done) {
|
|
const center = [-97.6114, 38.8403];
|
|
const source = new VectorSource({
|
|
strategy: bboxStrategy,
|
|
loader: function(extent) {
|
|
setTimeout(function() {
|
|
const lonLatExtent = transformExtent(extent, 'EPSG:3857', 'EPSG:4326');
|
|
expect(lonLatExtent[0]).to.roughlyEqual(-99.259349218, 1e-9);
|
|
expect(lonLatExtent[2]).to.roughlyEqual(-95.963450781, 1e-9);
|
|
done();
|
|
}, 0);
|
|
}
|
|
});
|
|
const div = document.createElement('div');
|
|
div.style.width = div.style.height = '100px';
|
|
document.body.appendChild(div);
|
|
const map = new Map({
|
|
target: div,
|
|
layers: [
|
|
new VectorLayer({
|
|
source: source
|
|
})
|
|
],
|
|
view: new View({
|
|
center: fromLonLat(center),
|
|
zoom: 7
|
|
})
|
|
});
|
|
map.renderSync();
|
|
map.setTarget(null);
|
|
document.body.removeChild(div);
|
|
});
|
|
|
|
});
|
|
|
|
describe('with no loader and the "all" strategy', function() {
|
|
|
|
it('stores the infinity extent in the Rtree', function() {
|
|
const source = new VectorSource();
|
|
source.loadFeatures([-10000, -10000, 10000, 10000], 1,
|
|
getProjection('EPSG:3857'));
|
|
const loadedExtents = source.loadedExtentsRtree_.getAll();
|
|
expect(loadedExtents).to.have.length(1);
|
|
expect(loadedExtents[0].extent).to.eql(
|
|
[-Infinity, -Infinity, Infinity, Infinity]);
|
|
});
|
|
});
|
|
|
|
describe('with setLoader', function() {
|
|
|
|
it('it will change the loader function', function() {
|
|
let count1 = 0;
|
|
const loader1 = function(bbox, resolution, projection) {
|
|
count1++;
|
|
};
|
|
let count2 = 0;
|
|
const loader2 = function(bbox, resolution, projection) {
|
|
count2++;
|
|
};
|
|
const source = new VectorSource({loader: loader1});
|
|
source.loadFeatures([-10000, -10000, 10000, 10000], 1,
|
|
getProjection('EPSG:3857'));
|
|
source.setLoader(loader2);
|
|
source.refresh();
|
|
source.loadFeatures([-10000, -10000, 10000, 10000], 1,
|
|
getProjection('EPSG:3857'));
|
|
expect(count1).to.eql(1);
|
|
expect(count2).to.eql(1);
|
|
});
|
|
|
|
it('removes extents with #removeLoadedExtent()', function(done) {
|
|
const source = new VectorSource();
|
|
source.setLoader(function(bbox, resolution, projection) {
|
|
setTimeout(function() {
|
|
expect(source.loadedExtentsRtree_.getAll()).to.have.length(1);
|
|
source.removeLoadedExtent(bbox);
|
|
expect(source.loadedExtentsRtree_.getAll()).to.have.length(0);
|
|
done();
|
|
}, 0);
|
|
});
|
|
source.loadFeatures([-10000, -10000, 10000, 10000], 1, getProjection('EPSG:3857'));
|
|
});
|
|
});
|
|
|
|
});
|
|
|
|
describe('the feature id index', function() {
|
|
let source;
|
|
beforeEach(function() {
|
|
source = new VectorSource();
|
|
});
|
|
|
|
it('ignores features with the same id', function() {
|
|
const feature = new Feature();
|
|
feature.setId('foo');
|
|
source.addFeature(feature);
|
|
const dupe = new Feature();
|
|
dupe.setId('foo');
|
|
source.addFeature(dupe);
|
|
expect(source.getFeatures()).to.have.length(1);
|
|
expect(source.getFeatureById('foo')).to.be(feature);
|
|
});
|
|
|
|
it('allows changing feature and set the same id', function() {
|
|
const foo = new Feature();
|
|
foo.setId('foo');
|
|
source.addFeature(foo);
|
|
const bar = new Feature();
|
|
bar.setId('bar');
|
|
source.addFeature(bar);
|
|
bar.setId('foo');
|
|
expect(source.getFeatureById('foo')).to.be(bar);
|
|
});
|
|
|
|
});
|
|
|
|
describe('the undefined feature id index', function() {
|
|
let source;
|
|
beforeEach(function() {
|
|
source = new VectorSource();
|
|
});
|
|
|
|
it('disallows adding the same feature twice', function() {
|
|
const feature = new Feature();
|
|
source.addFeature(feature);
|
|
expect(function() {
|
|
source.addFeature(feature);
|
|
}).to.throwException();
|
|
});
|
|
});
|
|
|
|
describe('with useSpatialIndex set to false', function() {
|
|
let source;
|
|
beforeEach(function() {
|
|
source = new VectorSource({useSpatialIndex: false});
|
|
});
|
|
|
|
it('returns a features collection', function() {
|
|
expect(source.getFeaturesCollection()).to.be.a(Collection);
|
|
});
|
|
|
|
it('#forEachFeatureInExtent loops through all features', function() {
|
|
source.addFeatures([new Feature(), new Feature()]);
|
|
const spy = sinon.spy();
|
|
source.forEachFeatureInExtent([0, 0, 0, 0], spy);
|
|
expect(spy.callCount).to.be(2);
|
|
});
|
|
|
|
});
|
|
|
|
describe('with a collection of features', function() {
|
|
let collection, source;
|
|
beforeEach(function() {
|
|
source = new VectorSource({
|
|
useSpatialIndex: false
|
|
});
|
|
collection = source.getFeaturesCollection();
|
|
});
|
|
|
|
it('creates a features collection', function() {
|
|
expect(source.getFeaturesCollection()).to.not.be(null);
|
|
});
|
|
|
|
it('adding/removing features keeps the collection in sync', function() {
|
|
const feature = new Feature();
|
|
source.addFeature(feature);
|
|
expect(collection.getLength()).to.be(1);
|
|
source.removeFeature(feature);
|
|
expect(collection.getLength()).to.be(0);
|
|
});
|
|
|
|
it('#clear() features keeps the collection in sync', function() {
|
|
const feature = new Feature();
|
|
source.addFeatures([feature]);
|
|
expect(collection.getLength()).to.be(1);
|
|
source.clear();
|
|
expect(collection.getLength()).to.be(0);
|
|
source.addFeatures([feature]);
|
|
expect(collection.getLength()).to.be(1);
|
|
source.clear(true);
|
|
expect(collection.getLength()).to.be(0);
|
|
});
|
|
|
|
it('keeps the source\'s features in sync with the collection', function() {
|
|
const feature = new Feature();
|
|
collection.push(feature);
|
|
expect(source.getFeatures().length).to.be(1);
|
|
collection.remove(feature);
|
|
expect(source.getFeatures().length).to.be(0);
|
|
collection.extend([feature]);
|
|
expect(source.getFeatures().length).to.be(1);
|
|
collection.clear();
|
|
expect(source.getFeatures().length).to.be(0);
|
|
});
|
|
|
|
it('prevents adding two features with a duplicate id in the collection', function() {
|
|
source = new VectorSource({
|
|
features: new Collection()
|
|
});
|
|
const feature1 = new Feature();
|
|
feature1.setId('1');
|
|
const feature2 = new Feature();
|
|
feature2.setId('1');
|
|
const collection = source.getFeaturesCollection();
|
|
collection.push(feature1);
|
|
collection.push(feature2);
|
|
expect(collection.getLength()).to.be(1);
|
|
});
|
|
});
|
|
|
|
describe('with a collection of features plus spatial index', function() {
|
|
let collection, source;
|
|
beforeEach(function() {
|
|
collection = new Collection();
|
|
source = new VectorSource({
|
|
features: collection
|
|
});
|
|
});
|
|
|
|
it('#getFeaturesCollection returns the configured collection', function() {
|
|
expect(source.getFeaturesCollection()).to.equal(collection);
|
|
});
|
|
|
|
it('adding/removing features keeps the collection in sync', function() {
|
|
const feature = new Feature();
|
|
source.addFeature(feature);
|
|
expect(collection.getLength()).to.be(1);
|
|
source.removeFeature(feature);
|
|
expect(collection.getLength()).to.be(0);
|
|
});
|
|
|
|
it('#clear() features keeps the collection in sync', function() {
|
|
const feature = new Feature();
|
|
source.addFeatures([feature]);
|
|
expect(collection.getLength()).to.be(1);
|
|
source.clear();
|
|
expect(collection.getLength()).to.be(0);
|
|
source.addFeatures([feature]);
|
|
expect(collection.getLength()).to.be(1);
|
|
source.clear(true);
|
|
expect(collection.getLength()).to.be(0);
|
|
});
|
|
|
|
it('keeps the source\'s features in sync with the collection', function() {
|
|
const feature = new Feature();
|
|
collection.push(feature);
|
|
expect(source.getFeatures().length).to.be(1);
|
|
collection.remove(feature);
|
|
expect(source.getFeatures().length).to.be(0);
|
|
collection.extend([feature]);
|
|
expect(source.getFeatures().length).to.be(1);
|
|
collection.clear();
|
|
expect(source.getFeatures().length).to.be(0);
|
|
});
|
|
|
|
});
|
|
|
|
});
|