125 lines
3.5 KiB
JavaScript
125 lines
3.5 KiB
JavaScript
goog.provide('ol.test.interaction.Interaction');
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goog.require('ol.events.EventTarget');
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goog.require('ol.Map');
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goog.require('ol.interaction.Interaction');
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describe('ol.interaction.Interaction', function() {
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describe('constructor', function() {
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var interaction;
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beforeEach(function() {
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interaction = new ol.interaction.Interaction({});
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});
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it('creates a new interaction', function() {
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expect(interaction).to.be.a(ol.interaction.Interaction);
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expect(interaction).to.be.a(ol.events.EventTarget);
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});
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it('creates an active interaction', function() {
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expect(interaction.getActive()).to.be(true);
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});
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});
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describe('#getMap()', function() {
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it('retrieves the associated map', function() {
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var map = new ol.Map({});
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var interaction = new ol.interaction.Interaction({});
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interaction.setMap(map);
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expect(interaction.getMap()).to.be(map);
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});
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it('returns null if no map', function() {
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var interaction = new ol.interaction.Interaction({});
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expect(interaction.getMap()).to.be(null);
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});
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});
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describe('#setMap()', function() {
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it('allows a map to be set', function() {
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var map = new ol.Map({});
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var interaction = new ol.interaction.Interaction({});
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interaction.setMap(map);
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expect(interaction.getMap()).to.be(map);
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});
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it('accepts null', function() {
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var interaction = new ol.interaction.Interaction({});
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interaction.setMap(null);
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expect(interaction.getMap()).to.be(null);
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});
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});
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describe('zoomByDelta()', function() {
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it('changes view resolution', function() {
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var view = new ol.View({
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resolution: 1,
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resolutions: [4, 2, 1, 0.5, 0.25]
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});
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ol.interaction.Interaction.zoomByDelta(view, 1);
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expect(view.getResolution()).to.be(0.5);
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ol.interaction.Interaction.zoomByDelta(view, -1);
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expect(view.getResolution()).to.be(1);
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ol.interaction.Interaction.zoomByDelta(view, 2);
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expect(view.getResolution()).to.be(0.25);
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ol.interaction.Interaction.zoomByDelta(view, -2);
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expect(view.getResolution()).to.be(1);
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});
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it('changes view resolution and center relative to the anchor', function() {
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var view = new ol.View({
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center: [0, 0],
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resolution: 1,
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resolutions: [4, 2, 1, 0.5, 0.25]
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});
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ol.interaction.Interaction.zoomByDelta(view, 1, [10, 10]);
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expect(view.getCenter()).to.eql([5, 5]);
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ol.interaction.Interaction.zoomByDelta(view, -1, [0, 0]);
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expect(view.getCenter()).to.eql([10, 10]);
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ol.interaction.Interaction.zoomByDelta(view, 2, [0, 0]);
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expect(view.getCenter()).to.eql([2.5, 2.5]);
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ol.interaction.Interaction.zoomByDelta(view, -2, [0, 0]);
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expect(view.getCenter()).to.eql([10, 10]);
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});
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it('changes view resolution and center relative to the anchor, while respecting the extent', function() {
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var view = new ol.View({
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center: [0, 0],
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extent: [-2.5, -2.5, 2.5, 2.5],
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resolution: 1,
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resolutions: [4, 2, 1, 0.5, 0.25]
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});
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ol.interaction.Interaction.zoomByDelta(view, 1, [10, 10]);
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expect(view.getCenter()).to.eql([2.5, 2.5]);
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ol.interaction.Interaction.zoomByDelta(view, -1, [0, 0]);
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expect(view.getCenter()).to.eql([2.5, 2.5]);
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ol.interaction.Interaction.zoomByDelta(view, 2, [10, 10]);
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expect(view.getCenter()).to.eql([2.5, 2.5]);
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ol.interaction.Interaction.zoomByDelta(view, -2, [0, 0]);
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expect(view.getCenter()).to.eql([2.5, 2.5]);
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});
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});
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});
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