Organize tests
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Tim Schaub
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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 Interaction from '../../../../../src/ol/interaction/Interaction.js';
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import Map from '../../../../../src/ol/Map.js';
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import MapBrowserEvent from '../../../../../src/ol/MapBrowserEvent.js';
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import Point from '../../../../../src/ol/geom/Point.js';
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import Translate, {
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TranslateEvent,
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} from '../../../../../src/ol/interaction/Translate.js';
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import VectorLayer from '../../../../../src/ol/layer/Vector.js';
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import VectorSource from '../../../../../src/ol/source/Vector.js';
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import View from '../../../../../src/ol/View.js';
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describe('ol.interaction.Translate', function () {
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let target, map, source, features;
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const width = 360;
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const height = 180;
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beforeEach(function (done) {
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target = document.createElement('div');
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const style = target.style;
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style.position = 'absolute';
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style.left = '-1000px';
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style.top = '-1000px';
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style.width = width + 'px';
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style.height = height + 'px';
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document.body.appendChild(target);
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source = new VectorSource();
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features = [
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new Feature({
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geometry: new Point([10, -20]),
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}),
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new Feature({
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geometry: new Point([20, -30]),
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}),
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];
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source.addFeatures(features);
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const layer = new VectorLayer({source: source});
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map = new Map({
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target: target,
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layers: [layer],
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view: new View({
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projection: 'EPSG:4326',
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center: [0, 0],
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resolution: 1,
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}),
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});
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map.once('postrender', function () {
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done();
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});
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});
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afterEach(function () {
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map.dispose();
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document.body.removeChild(target);
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});
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/**
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* Simulates a browser event on the map viewport. The client x/y location
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* will be adjusted as if the map were centered at 0,0.
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* @param {string} type Event type.
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* @param {number} x Horizontal offset from map center.
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* @param {number} y Vertical offset from map center.
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* @param {boolean} [opt_shiftKey] Shift key is pressed.
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*/
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function simulateEvent(type, x, y, opt_shiftKey) {
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const viewport = map.getViewport();
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// calculated in case body has top < 0 (test runner with small window)
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const position = viewport.getBoundingClientRect();
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const shiftKey = opt_shiftKey !== undefined ? opt_shiftKey : false;
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const event = new MapBrowserEvent(type, map, {
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type: type,
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target: viewport.firstChild,
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pointerId: 0,
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clientX: position.left + x + width / 2,
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clientY: position.top + y + height / 2,
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shiftKey: shiftKey,
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preventDefault: function () {},
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});
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map.handleMapBrowserEvent(event);
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}
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/**
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* Tracks events triggered by the interaction as well as feature
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* modifications. Helper function to
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* @param {ol.Feature} feature Translated feature.
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* @param {ol.interaction.Translate} interaction The interaction.
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* @return {Array<TranslateEvent|string>} events
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*/
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function trackEvents(feature, interaction) {
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const events = [];
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feature.on('change', function (event) {
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events.push('change');
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});
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interaction.on('translatestart', function (event) {
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events.push(event);
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});
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interaction.on('translateend', function (event) {
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events.push(event);
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});
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return events;
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}
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/**
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* Validates the event array to verify proper event sequence. Checks
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* that first and last event are correct TranslateEvents and that feature
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* modifications event are in between.
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* @param {Array<TranslateEvent|string>} events The events.
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* @param {Array<ol.Feature>} features The features.
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*/
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function validateEvents(events, features) {
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const startevent = events[0];
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const endevent = events[events.length - 1];
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// first event should be translatestart
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expect(startevent).to.be.an(TranslateEvent);
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expect(startevent.type).to.eql('translatestart');
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// last event should be translateend
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expect(endevent).to.be.an(TranslateEvent);
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expect(endevent.type).to.eql('translateend');
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// make sure we get change events to events array
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expect(events.length > 2).to.be(true);
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// middle events should be feature modification events
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for (let i = 1; i < events.length - 1; i++) {
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expect(events[i]).to.equal('change');
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}
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// TranslateEvents should include the expected features
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expect(startevent.features.getArray()).to.eql(features);
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expect(endevent.features.getArray()).to.eql(features);
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}
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describe('constructor', function () {
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it('creates a new interaction', function () {
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const translate = new Translate({
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features: features,
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});
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expect(translate).to.be.a(Translate);
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expect(translate).to.be.a(Interaction);
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});
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});
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describe('setActive', function () {
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it('works when the map is not set', function () {
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const translate = new Translate({
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features: features,
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});
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expect(translate.getActive()).to.be(true);
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translate.setActive(false);
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expect(translate.getActive()).to.be(false);
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});
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});
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describe('moving features, with features option', function () {
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let translate;
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beforeEach(function () {
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translate = new Translate({
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features: new Collection([features[0]]),
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});
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map.addInteraction(translate);
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});
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it('moves a selected feature', function () {
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const events = trackEvents(features[0], translate);
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simulateEvent('pointermove', 10, 20);
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simulateEvent('pointerdown', 10, 20);
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simulateEvent('pointerdrag', 50, -40);
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simulateEvent('pointerup', 50, -40);
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const geometry = features[0].getGeometry();
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expect(geometry).to.be.a(Point);
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expect(geometry.getCoordinates()).to.eql([50, 40]);
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validateEvents(events, [features[0]]);
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});
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it('does not move an unselected feature', function () {
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const events = trackEvents(features[0], translate);
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simulateEvent('pointermove', 20, 30);
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simulateEvent('pointerdown', 20, 30);
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simulateEvent('pointerdrag', 50, -40);
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simulateEvent('pointerup', 50, -40);
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const geometry = features[1].getGeometry();
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expect(geometry).to.be.a(Point);
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expect(geometry.getCoordinates()).to.eql([20, -30]);
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expect(events).to.be.empty();
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});
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});
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describe('moving features, without features option', function () {
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let translate;
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beforeEach(function () {
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translate = new Translate();
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map.addInteraction(translate);
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});
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it('moves only targeted feature', function () {
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const events = trackEvents(features[0], translate);
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simulateEvent('pointermove', 10, 20);
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simulateEvent('pointerdown', 10, 20);
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simulateEvent('pointerdrag', 50, -40);
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simulateEvent('pointerup', 50, -40);
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expect(features[0].getGeometry().getCoordinates()).to.eql([50, 40]);
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expect(features[1].getGeometry().getCoordinates()).to.eql([20, -30]);
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validateEvents(events, [features[0]]);
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});
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});
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describe('moving features, with filter option', function () {
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let translate;
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beforeEach(function () {
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translate = new Translate({
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filter: function (feature, layer) {
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return feature == features[0];
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},
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});
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map.addInteraction(translate);
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});
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it('moves a filter-passing feature', function () {
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const events = trackEvents(features[0], translate);
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simulateEvent('pointermove', 10, 20);
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simulateEvent('pointerdown', 10, 20);
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simulateEvent('pointerdrag', 50, -40);
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simulateEvent('pointerup', 50, -40);
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const geometry = features[0].getGeometry();
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expect(geometry).to.be.a(Point);
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expect(geometry.getCoordinates()).to.eql([50, 40]);
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validateEvents(events, [features[0]]);
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});
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it('does not move a filter-discarded feature', function () {
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const events = trackEvents(features[0], translate);
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simulateEvent('pointermove', 20, 30);
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simulateEvent('pointerdown', 20, 30);
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simulateEvent('pointerdrag', 50, -40);
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simulateEvent('pointerup', 50, -40);
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const geometry = features[1].getGeometry();
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expect(geometry).to.be.a(Point);
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expect(geometry.getCoordinates()).to.eql([20, -30]);
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expect(events).to.be.empty();
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});
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});
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describe('changes css cursor', function () {
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let element, translate;
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beforeEach(function () {
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translate = new Translate();
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map.addInteraction(translate);
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element = map.getViewport();
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});
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it('changes css cursor', function () {
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expect(element.classList.contains('ol-grabbing')).to.be(false);
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expect(element.classList.contains('ol-grab')).to.be(false);
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simulateEvent('pointermove', 10, 20);
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expect(element.classList.contains('ol-grabbing')).to.be(false);
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expect(element.classList.contains('ol-grab')).to.be(true);
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simulateEvent('pointerdown', 10, 20);
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expect(element.classList.contains('ol-grabbing')).to.be(true);
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expect(element.classList.contains('ol-grab')).to.be(false);
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simulateEvent('pointerup', 10, 20);
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expect(element.classList.contains('ol-grabbing')).to.be(false);
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expect(element.classList.contains('ol-grab')).to.be(true);
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simulateEvent('pointermove', 0, 0);
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expect(element.classList.contains('ol-grabbing')).to.be(false);
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expect(element.classList.contains('ol-grab')).to.be(false);
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});
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it('resets css cursor when interaction is deactivated while pointer is on feature', function () {
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simulateEvent('pointermove', 10, 20);
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expect(element.classList.contains('ol-grabbing')).to.be(false);
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expect(element.classList.contains('ol-grab')).to.be(true);
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translate.setActive(false);
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simulateEvent('pointermove', 0, 0);
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expect(element.classList.contains('ol-grabbing')).to.be(false);
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expect(element.classList.contains('ol-grab')).to.be(false);
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});
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it('resets css cursor interaction is removed while pointer is on feature', function () {
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simulateEvent('pointermove', 10, 20);
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expect(element.classList.contains('ol-grabbing')).to.be(false);
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expect(element.classList.contains('ol-grab')).to.be(true);
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map.removeInteraction(translate);
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simulateEvent('pointermove', 0, 0);
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expect(element.classList.contains('ol-grabbing')).to.be(false);
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expect(element.classList.contains('ol-grab')).to.be(false);
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});
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it('resets css cursor to existing cursor interaction is removed while pointer is on feature', function () {
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element.style.cursor = 'pointer';
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simulateEvent('pointermove', 10, 20);
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expect(element.classList.contains('ol-grabbing')).to.be(false);
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expect(element.classList.contains('ol-grab')).to.be(true);
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map.removeInteraction(translate);
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simulateEvent('pointermove', 0, 0);
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expect(element.classList.contains('ol-grabbing')).to.be(false);
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expect(element.classList.contains('ol-grab')).to.be(false);
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});
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});
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});
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