246 lines
7.9 KiB
JavaScript
246 lines
7.9 KiB
JavaScript
goog.provide('ol.test.renderer.webgl.AtlasManager');
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describe('ol.renderer.webgl.Atlas', function() {
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var defaultRender = function(context, x, y) {
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};
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describe('#constructor', function() {
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it('inits the atlas', function() {
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var atlas = new ol.renderer.webgl.Atlas(256, 1);
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expect(atlas.emptyBlocks_).to.eql(
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[{x: 0, y: 0, width: 256, height: 256}]);
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});
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});
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describe('#add (squares with same size)', function() {
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it('adds one entry', function() {
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var atlas = new ol.renderer.webgl.Atlas(128, 1);
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var info = atlas.add('1', 32, 32, defaultRender);
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expect(info).to.eql(
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{offsetX: 1, offsetY: 1, image: atlas.canvas_});
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expect(atlas.get('1')).to.eql(info);
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});
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it('adds two entries', function() {
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var atlas = new ol.renderer.webgl.Atlas(128, 1);
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atlas.add('1', 32, 32, defaultRender);
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var info = atlas.add('2', 32, 32, defaultRender);
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expect(info).to.eql(
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{offsetX: 34, offsetY: 1, image: atlas.canvas_});
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expect(atlas.get('2')).to.eql(info);
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});
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it('adds three entries', function() {
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var atlas = new ol.renderer.webgl.Atlas(128, 1);
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atlas.add('1', 32, 32, defaultRender);
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atlas.add('2', 32, 32, defaultRender);
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var info = atlas.add('3', 32, 32, defaultRender);
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expect(info).to.eql(
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{offsetX: 67, offsetY: 1, image: atlas.canvas_});
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expect(atlas.get('3')).to.eql(info);
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});
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it('adds four entries (new row)', function() {
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var atlas = new ol.renderer.webgl.Atlas(128, 1);
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atlas.add('1', 32, 32, defaultRender);
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atlas.add('2', 32, 32, defaultRender);
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atlas.add('3', 32, 32, defaultRender);
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var info = atlas.add('4', 32, 32, defaultRender);
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expect(info).to.eql(
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{offsetX: 1, offsetY: 34, image: atlas.canvas_});
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expect(atlas.get('4')).to.eql(info);
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});
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it('returns null when an entry is too big', function() {
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var atlas = new ol.renderer.webgl.Atlas(128, 1);
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atlas.add('1', 32, 32, defaultRender);
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atlas.add('2', 32, 32, defaultRender);
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atlas.add('3', 32, 32, defaultRender);
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var info = atlas.add(4, 100, 100, defaultRender);
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expect(info).to.eql(null);
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});
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it('fills up the whole atlas', function() {
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var atlas = new ol.renderer.webgl.Atlas(128, 1);
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for (var i = 1; i <= 16; i++) {
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expect(atlas.add(i.toString(), 28, 28, defaultRender)).to.be.ok();
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}
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// there is no more space for items of this size, the next one will fail
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expect(atlas.add('17', 28, 28, defaultRender)).to.eql(null);
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});
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});
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describe('#add (rectangles with different sizes)', function() {
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it('adds a bunch of rectangles', function() {
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var atlas = new ol.renderer.webgl.Atlas(128, 1);
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expect(atlas.add('1', 64, 32, defaultRender)).to.eql(
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{offsetX: 1, offsetY: 1, image: atlas.canvas_});
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expect(atlas.add('2', 64, 32, defaultRender)).to.eql(
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{offsetX: 1, offsetY: 34, image: atlas.canvas_});
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expect(atlas.add('3', 64, 32, defaultRender)).to.eql(
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{offsetX: 1, offsetY: 67, image: atlas.canvas_});
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// this one can not be added anymore
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expect(atlas.add('4', 64, 32, defaultRender)).to.eql(null);
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// but there is still room for smaller ones
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expect(atlas.add('5', 40, 32, defaultRender)).to.eql(
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{offsetX: 66, offsetY: 1, image: atlas.canvas_});
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expect(atlas.add('6', 40, 32, defaultRender)).to.eql(
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{offsetX: 66, offsetY: 34, image: atlas.canvas_});
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});
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it('fills up the whole atlas (rectangles in portrait format)', function() {
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var atlas = new ol.renderer.webgl.Atlas(128, 1);
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for (var i = 1; i <= 32; i++) {
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expect(atlas.add(i.toString(), 28, 14, defaultRender)).to.be.ok();
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}
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// there is no more space for items of this size, the next one will fail
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expect(atlas.add('33', 28, 14, defaultRender)).to.eql(null);
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});
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it('fills up the whole atlas (rectangles in landscape format)', function() {
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var atlas = new ol.renderer.webgl.Atlas(128, 1);
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for (var i = 1; i <= 32; i++) {
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expect(atlas.add(i.toString(), 14, 28, defaultRender)).to.be.ok();
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}
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// there is no more space for items of this size, the next one will fail
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expect(atlas.add('33', 14, 28, defaultRender)).to.eql(null);
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});
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});
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describe('#add (rendering)', function() {
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it('calls the render callback with the right values', function() {
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var atlas = new ol.renderer.webgl.Atlas(128, 1);
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var rendererCallback = sinon.spy();
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atlas.add('1', 32, 32, rendererCallback);
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expect(rendererCallback.calledOnce).to.be.ok();
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expect(rendererCallback.calledWith(atlas.context_, 1, 1)).to.be.ok();
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rendererCallback = sinon.spy();
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atlas.add('2', 32, 32, rendererCallback);
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expect(rendererCallback.calledOnce).to.be.ok();
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expect(rendererCallback.calledWith(atlas.context_, 34, 1)).to.be.ok();
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});
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it('is possible to actually draw on the canvas', function() {
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var atlas = new ol.renderer.webgl.Atlas(128, 1);
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var rendererCallback = function(context, x, y) {
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context.fillStyle = '#FFA500';
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context.fillRect(x, y, 32, 32);
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};
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expect(atlas.add('1', 32, 32, rendererCallback)).to.be.ok();
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expect(atlas.add('2', 32, 32, rendererCallback)).to.be.ok();
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// no error, ok
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});
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});
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});
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describe('ol.renderer.webgl.AtlasManager', function() {
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var defaultRender = function(context, x, y) {
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};
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describe('#constructor', function() {
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it('inits the atlas manager', function() {
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var manager = new ol.renderer.webgl.AtlasManager();
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expect(manager.atlases_).to.not.be.empty();
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});
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});
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describe('#add', function() {
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it('adds one entry', function() {
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var manager = new ol.renderer.webgl.AtlasManager(128);
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var info = manager.add('1', 32, 32, defaultRender);
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expect(info).to.eql(
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{offsetX: 1, offsetY: 1, image: manager.atlases_[0].canvas_});
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expect(manager.getInfo('1')).to.eql(info);
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});
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it('creates a new atlas if needed', function() {
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var manager = new ol.renderer.webgl.AtlasManager(128);
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expect(manager.add('1', 100, 100, defaultRender)).to.be.ok();
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var info = manager.add('2', 100, 100, defaultRender);
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expect(info).to.be.ok();
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expect(info.image.width).to.eql(256);
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expect(manager.atlases_).to.have.length(2);
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});
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it('creates new atlases until one is large enough', function() {
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var manager = new ol.renderer.webgl.AtlasManager(128);
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expect(manager.add('1', 100, 100, defaultRender)).to.be.ok();
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expect(manager.atlases_).to.have.length(1);
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var info = manager.add('2', 500, 500, defaultRender);
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expect(info).to.be.ok();
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expect(info.image.width).to.eql(512);
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expect(manager.atlases_).to.have.length(3);
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});
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it('checks all existing atlases and create a new if needed', function() {
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var manager = new ol.renderer.webgl.AtlasManager(128);
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expect(manager.add('1', 100, 100, defaultRender)).to.be.ok();
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expect(manager.add('2', 100, 100, defaultRender)).to.be.ok();
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expect(manager.atlases_).to.have.length(2);
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var info = manager.add(3, 500, 500, defaultRender);
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expect(info).to.be.ok();
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expect(info.image.width).to.eql(512);
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expect(manager.atlases_).to.have.length(3);
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});
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it('returns null if the size exceeds the maximum size', function() {
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var manager = new ol.renderer.webgl.AtlasManager(128);
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expect(manager.add('1', 100, 100, defaultRender)).to.be.ok();
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expect(manager.add('2', 3000, 3000, defaultRender)).to.eql(null);
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});
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});
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describe('#getInfo', function() {
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it('returns null if no entry for the given id', function() {
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var manager = new ol.renderer.webgl.AtlasManager(128);
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expect(manager.getInfo('123456')).to.eql(null);
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});
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});
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});
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goog.require('ol.renderer.webgl.Atlas');
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goog.require('ol.renderer.webgl.AtlasManager');
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