108 lines
3.4 KiB
JavaScript
108 lines
3.4 KiB
JavaScript
goog.provide('ol.test.View2D');
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describe('ol.View2D', function() {
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describe('create constraints', function() {
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describe('create resolution constraint', function() {
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describe('with no options', function() {
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it('gives a correct resolution constraint function', function() {
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var options = {};
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var fn = ol.View2D.createResolutionConstraint_(options).constraint;
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expect(fn(156543.03392804097, 0, 0))
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.to.roughlyEqual(156543.03392804097, 1e-9);
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expect(fn(78271.51696402048, 0, 0))
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.to.roughlyEqual(78271.51696402048, 1e-10);
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});
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});
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describe('with maxResolution, maxZoom, and zoomFactor options',
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function() {
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it('gives a correct resolution constraint function', function() {
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var options = {
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maxResolution: 81,
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maxZoom: 3,
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zoomFactor: 3
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};
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var info = ol.View2D.createResolutionConstraint_(options);
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var maxResolution = info.maxResolution;
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expect(maxResolution).to.eql(81);
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var minResolution = info.minResolution;
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expect(minResolution).to.eql(3);
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var fn = info.constraint;
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expect(fn(82, 0, 0)).to.eql(81);
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expect(fn(81, 0, 0)).to.eql(81);
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expect(fn(27, 0, 0)).to.eql(27);
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expect(fn(9, 0, 0)).to.eql(9);
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expect(fn(3, 0, 0)).to.eql(3);
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expect(fn(2, 0, 0)).to.eql(3);
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});
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});
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describe('with resolutions', function() {
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it('gives a correct resolution constraint function', function() {
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var options = {
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resolutions: [97, 76, 65, 54, 0.45]
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};
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var info = ol.View2D.createResolutionConstraint_(options);
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var maxResolution = info.maxResolution;
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expect(maxResolution).to.eql(97);
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var minResolution = info.minResolution;
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expect(minResolution).to.eql(0.45);
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var fn = info.constraint;
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expect(fn(97, 0, 0)).to.eql(97);
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expect(fn(76, 0, 0)).to.eql(76);
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expect(fn(65, 0, 0)).to.eql(65);
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expect(fn(54, 0, 0)).to.eql(54);
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expect(fn(0.45, 0, 0)).to.eql(0.45);
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});
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});
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});
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describe('create rotation constraint', function() {
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it('gives a correct rotation constraint function', function() {
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var options = {};
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var fn = ol.View2D.createRotationConstraint_(options);
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expect(fn(0.01, 0)).to.eql(0);
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expect(fn(0.15, 0)).to.eql(0.15);
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});
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});
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});
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describe('#getZoom', function() {
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var view;
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beforeEach(function() {
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view = new ol.View2D({
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resolutions: [512, 256, 128, 64, 32, 16]
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});
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});
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it('returns correct zoom levels', function() {
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view.setResolution(undefined);
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expect(view.getZoom()).to.be(undefined);
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view.setResolution(511);
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expect(view.getZoom()).to.be(undefined);
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view.setResolution(512);
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expect(view.getZoom()).to.be(0);
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view.setResolution(64);
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expect(view.getZoom()).to.be(3);
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view.setResolution(65);
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expect(view.getZoom()).to.be(undefined);
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view.setResolution(16);
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expect(view.getZoom()).to.be(5);
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view.setResolution(15);
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expect(view.getZoom()).to.be(undefined);
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});
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});
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});
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goog.require('ol.View2D');
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