471 lines
12 KiB
JavaScript
471 lines
12 KiB
JavaScript
import Map from '../../../../src/ol/Map.js';
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import Layer, {visibleAtResolution} from '../../../../src/ol/layer/Layer.js';
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import {get as getProjection} from '../../../../src/ol/proj.js';
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import RenderEvent from '../../../../src/ol/render/Event.js';
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import Source from '../../../../src/ol/source/Source.js';
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describe('ol.layer.Layer', function() {
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describe('constructor (defaults)', function() {
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let layer;
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beforeEach(function() {
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layer = new Layer({
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source: new Source({
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projection: getProjection('EPSG:4326')
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})
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});
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});
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afterEach(function() {
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layer.dispose();
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});
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it('creates an instance', function() {
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expect(layer).to.be.a(Layer);
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});
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it('provides default opacity', function() {
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expect(layer.getOpacity()).to.be(1);
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});
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it('provides default visibility', function() {
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expect(layer.getVisible()).to.be(true);
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});
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it('provides default max resolution', function() {
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expect(layer.getMaxResolution()).to.be(Infinity);
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});
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it('provides default min resolution', function() {
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expect(layer.getMinResolution()).to.be(0);
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});
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it('provides default layerState', function() {
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expect(layer.getLayerState()).to.eql({
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layer: layer,
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opacity: 1,
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visible: true,
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managed: true,
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sourceState: 'ready',
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extent: undefined,
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zIndex: 0,
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maxResolution: Infinity,
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minResolution: 0
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});
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});
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});
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describe('constructor (options)', function() {
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it('accepts options', function() {
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const layer = new Layer({
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source: new Source({
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projection: getProjection('EPSG:4326')
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}),
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opacity: 0.5,
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visible: false,
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zIndex: 10,
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maxResolution: 500,
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minResolution: 0.25,
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foo: 42
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});
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expect(layer.getOpacity()).to.be(0.5);
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expect(layer.getVisible()).to.be(false);
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expect(layer.getMaxResolution()).to.be(500);
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expect(layer.getMinResolution()).to.be(0.25);
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expect(layer.get('foo')).to.be(42);
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expect(layer.getLayerState()).to.eql({
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layer: layer,
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opacity: 0.5,
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visible: false,
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managed: true,
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sourceState: 'ready',
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extent: undefined,
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zIndex: 10,
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maxResolution: 500,
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minResolution: 0.25
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});
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layer.dispose();
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});
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});
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describe('visibleAtResolution', function() {
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let layer;
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beforeEach(function() {
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layer = new Layer({
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source: new Source({
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projection: getProjection('EPSG:4326')
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})
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});
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});
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afterEach(function() {
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layer.dispose();
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});
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it('returns false if layer is not visible', function() {
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layer.setVisible(false);
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layer.setMinResolution(3);
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layer.setMaxResolution(5);
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const layerState = layer.getLayerState();
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expect(visibleAtResolution(layerState, 4)).to.be(false);
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});
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it('returns false if resolution lower than minResolution', function() {
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layer.setVisible(true);
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layer.setMinResolution(3);
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layer.setMaxResolution(5);
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const layerState = layer.getLayerState();
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expect(visibleAtResolution(layerState, 2)).to.be(false);
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});
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it('returns false if resolution greater than maxResolution', function() {
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layer.setVisible(true);
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layer.setMinResolution(3);
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layer.setMaxResolution(5);
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const layerState = layer.getLayerState();
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expect(visibleAtResolution(layerState, 6)).to.be(false);
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});
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it('returns true otherwise', function() {
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layer.setVisible(true);
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layer.setMinResolution(3);
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layer.setMaxResolution(5);
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const layerState = layer.getLayerState();
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expect(visibleAtResolution(layerState, 4)).to.be(true);
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});
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});
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describe('#getLayerState', function() {
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let layer;
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beforeEach(function() {
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layer = new Layer({
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source: new Source({
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projection: getProjection('EPSG:4326')
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})
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});
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});
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afterEach(function() {
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layer.dispose();
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});
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it('returns a layerState from the properties values', function() {
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layer.setOpacity(1 / 3);
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layer.setVisible(false);
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layer.setMaxResolution(500);
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layer.setMinResolution(0.25);
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layer.setZIndex(10);
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expect(layer.getLayerState()).to.eql({
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layer: layer,
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opacity: 0.33,
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visible: false,
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managed: true,
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sourceState: 'ready',
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extent: undefined,
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zIndex: 10,
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maxResolution: 500,
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minResolution: 0.25
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});
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});
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it('returns a layerState with clamped values', function() {
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layer.setOpacity(-1.5);
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layer.setVisible(false);
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expect(layer.getLayerState()).to.eql({
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layer: layer,
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opacity: 0,
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visible: false,
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managed: true,
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sourceState: 'ready',
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extent: undefined,
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zIndex: 0,
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maxResolution: Infinity,
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minResolution: 0
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});
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layer.setOpacity(3);
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layer.setVisible(true);
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expect(layer.getLayerState()).to.eql({
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layer: layer,
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opacity: 1,
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visible: true,
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managed: true,
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sourceState: 'ready',
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extent: undefined,
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zIndex: 0,
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maxResolution: Infinity,
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minResolution: 0
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});
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});
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});
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describe('#getSource', function() {
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it('gets the layer source', function() {
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const source = new Source({projection: getProjection('EPSG:4326')});
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const layer = new Layer({source: source});
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expect(layer.getSource()).to.be(source);
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});
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});
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describe('#set("source", source)', function() {
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const projection = getProjection('EPSG:4326');
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it('sets the layer source', function() {
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const layer = new Layer({
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source: new Source({projection: projection})
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});
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const source = new Source({projection: projection});
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layer.set('source', source);
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expect(layer.getSource()).to.be(source);
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});
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it('calls changed', function() {
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const layer = new Layer({
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source: new Source({projection: projection})
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});
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sinon.spy(layer, 'changed');
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const source = new Source({projection: projection});
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layer.set('source', source);
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expect(layer.changed.calledOnce).to.be(true);
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});
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it('sets up event listeners', function() {
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sinon.spy(Layer.prototype, 'handleSourceChange_');
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const first = new Source({projection: projection});
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const layer = new Layer({source: first});
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first.setState('ready');
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expect(layer.handleSourceChange_.calledOnce).to.be(true);
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const second = new Source({projection: projection});
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layer.set('source', second);
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expect(layer.handleSourceChange_.calledOnce).to.be(true);
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second.setState('ready');
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expect(layer.handleSourceChange_.callCount).to.be(2);
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// remove spy
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Layer.prototype.handleSourceChange_.restore();
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});
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});
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describe('#setSource()', function() {
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const projection = getProjection('EPSG:4326');
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it('sets the layer source', function() {
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const layer = new Layer({
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source: new Source({projection: projection})
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});
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const source = new Source({projection: projection});
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layer.setSource(source);
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expect(layer.getSource()).to.be(source);
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});
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it('calls changed', function() {
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const layer = new Layer({
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source: new Source({projection: projection})
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});
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sinon.spy(layer, 'changed');
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const source = new Source({projection: projection});
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layer.setSource(source);
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expect(layer.changed.calledOnce).to.be(true);
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});
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it('sets up event listeners', function() {
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sinon.spy(Layer.prototype, 'handleSourceChange_');
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const first = new Source({projection: projection});
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const layer = new Layer({source: first});
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first.setState('ready');
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expect(layer.handleSourceChange_.calledOnce).to.be(true);
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const second = new Source({projection: projection});
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layer.setSource(second);
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expect(layer.handleSourceChange_.calledOnce).to.be(true);
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second.setState('ready');
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expect(layer.handleSourceChange_.callCount).to.be(2);
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// remove spy
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Layer.prototype.handleSourceChange_.restore();
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});
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});
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describe('#setOpacity', function() {
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let layer;
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beforeEach(function() {
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layer = new Layer({
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source: new Source({
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projection: getProjection('EPSG:4326')
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})
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});
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});
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afterEach(function() {
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layer.dispose();
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});
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it('accepts a positive number', function() {
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layer.setOpacity(0.3);
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expect(layer.getOpacity()).to.be(0.3);
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});
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it('triggers a change event', function() {
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const listener = sinon.spy();
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layer.on('propertychange', listener);
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layer.setOpacity(0.4);
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expect(listener.calledOnce).to.be(true);
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});
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});
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describe('#setVisible', function() {
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let layer;
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beforeEach(function() {
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layer = new Layer({
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source: new Source({
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projection: getProjection('EPSG:4326')
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})
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});
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});
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afterEach(function() {
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layer.dispose();
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});
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it('sets visible property', function() {
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layer.setVisible(false);
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expect(layer.getVisible()).to.be(false);
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layer.setVisible(true);
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expect(layer.getVisible()).to.be(true);
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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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layer.on('propertychange', listener);
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layer.setVisible(false);
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expect(listener.callCount).to.be(1);
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layer.setVisible(true);
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expect(listener.callCount).to.be(2);
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});
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});
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describe('#setMap (unmanaged layer)', function() {
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let map;
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beforeEach(function() {
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map = new Map({});
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});
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describe('with map in constructor options', function() {
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it('renders the layer', function() {
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const layer = new Layer({
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map: map
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});
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const frameState = {
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layerStatesArray: []
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};
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map.dispatchEvent(new RenderEvent('precompose', null, frameState, null, null));
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expect(frameState.layerStatesArray.length).to.be(1);
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const layerState = frameState.layerStatesArray[0];
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expect(layerState.layer).to.equal(layer);
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});
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});
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describe('setMap sequences', function() {
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let mapRenderSpy;
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beforeEach(function() {
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mapRenderSpy = sinon.spy(map, 'render');
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});
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afterEach(function() {
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mapRenderSpy.restore();
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});
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it('requests a render frame', function() {
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const layer = new Layer({});
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layer.setMap(map);
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expect(mapRenderSpy.callCount).to.be(1);
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layer.setMap(null);
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expect(mapRenderSpy.callCount).to.be(2);
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layer.setMap(map);
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expect(mapRenderSpy.callCount).to.be(3);
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});
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});
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describe('zIndex for unmanaged layers', function() {
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let frameState, layer;
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beforeEach(function() {
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layer = new Layer({
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map: map
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});
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frameState = {
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layerStatesArray: [],
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layerStates: {}
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};
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});
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afterEach(function() {
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layer.setMap(null);
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});
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it('has Infinity as zIndex when not configured otherwise', function() {
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map.dispatchEvent(new RenderEvent('precompose', null,
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frameState, null, null));
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const layerState = frameState.layerStatesArray[0];
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expect(layerState.zIndex).to.be(Infinity);
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});
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it('respects the configured zIndex', function() {
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layer.setZIndex(42);
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map.dispatchEvent(new RenderEvent('precompose', null,
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frameState, null, null));
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const layerState = frameState.layerStatesArray[0];
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expect(layerState.zIndex).to.be(42);
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});
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});
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});
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});
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