openlayers
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Build tools and sources for developing OpenLayers based mapping applications
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JavaScript
goog.provide('ol.test.source.Vector');
goog.require('ol.events');
goog.require('ol.Collection');
goog.require('ol.Feature');
goog.require('ol.geom.Point');
goog.require('ol.geom.LineString');
goog.require('ol.proj');
goog.require('ol.source.Vector');
describe('ol.source.Vector', function() {
var pointFeature;
var infiniteExtent;
beforeEach(function() {
pointFeature = new ol.Feature(new ol.geom.Point([0, 0]));
infiniteExtent = [-Infinity, -Infinity, Infinity, Infinity];
});
describe('when empty', function() {
var vectorSource;
beforeEach(function() {
vectorSource = new ol.source.Vector();
});
describe('#forEachFeatureInExtent', function() {
it('does not call the callback', function() {
var f = sinon.spy();
vectorSource.forEachFeatureInExtent(infiniteExtent, f);
expect(f).not.to.be.called();
});
});
describe('#getFeaturesInExtent', function() {
it('returns an empty array', function() {
var features = vectorSource.getFeaturesInExtent(infiniteExtent);
expect(features).to.be.an(Array);
expect(features).to.be.empty();
});
});
describe('#isEmpty', function() {
it('returns true', function() {
expect(vectorSource.isEmpty()).to.be(true);
});
});
describe('#addFeature', function() {
it('can add a single point feature', function() {
vectorSource.addFeature(pointFeature);
var features = vectorSource.getFeaturesInExtent(infiniteExtent);
expect(features).to.be.an(Array);
expect(features).to.have.length(1);
expect(features[0]).to.be(pointFeature);
});
it('fires a change event', function() {
var listener = sinon.spy();
ol.events.listen(vectorSource, 'change', listener);
vectorSource.addFeature(pointFeature);
expect(listener).to.be.called();
});
it('adds same id features only once', function() {
var source = new ol.source.Vector();
var feature1 = new ol.Feature();
feature1.setId('1');
var feature2 = new ol.Feature();
feature2.setId('1');
source.addFeature(feature1);
source.addFeature(feature2);
expect(source.getFeatures().length).to.be(1);
});
});
});
describe('when populated with 3 features', function() {
var features = [];
var vectorSource;
beforeEach(function() {
features.push(new ol.Feature(new ol.geom.LineString([[0, 0], [10, 10]])));
features.push(new ol.Feature(new ol.geom.Point([0, 10])));
features.push(new ol.Feature(new ol.geom.Point([10, 5])));
vectorSource = new ol.source.Vector({
features: features
});
});
describe('#getClosestFeatureToCoordinate', function() {
it('returns the expected feature', function() {
var feature = vectorSource.getClosestFeatureToCoordinate([1, 9]);
expect(feature).to.be(features[1]);
});
it('returns the expected feature when a filter is used', function() {
var feature = vectorSource.getClosestFeatureToCoordinate([1, 9], function(feature) {
return feature.getGeometry().getType() == 'LineString';
});
expect(feature).to.be(features[0]);
});
});
});
describe('when populated with 10 random points and a null', function() {
var features;
var vectorSource;
beforeEach(function() {
features = [];
var i;
for (i = 0; i < 10; ++i) {
features[i] =
new ol.Feature(new ol.geom.Point([Math.random(), Math.random()]));
}
features.push(new ol.Feature(null));
vectorSource = new ol.source.Vector({
features: features
});
});
describe('#clear', function() {
it('removes all features using fast path', function() {
var changeSpy = sinon.spy();
ol.events.listen(vectorSource, 'change', changeSpy);
var removeFeatureSpy = sinon.spy();
ol.events.listen(vectorSource, 'removefeature', removeFeatureSpy);
var clearSourceSpy = sinon.spy();
ol.events.listen(vectorSource, 'clear', clearSourceSpy);
vectorSource.clear(true);
expect(vectorSource.getFeatures()).to.eql([]);
expect(vectorSource.isEmpty()).to.be(true);
expect(changeSpy).to.be.called();
expect(changeSpy.callCount).to.be(1);
expect(removeFeatureSpy).not.to.be.called();
expect(removeFeatureSpy.callCount).to.be(0);
expect(clearSourceSpy).to.be.called();
expect(clearSourceSpy.callCount).to.be(1);
});
it('removes all features using slow path', function() {
var changeSpy = sinon.spy();
ol.events.listen(vectorSource, 'change', changeSpy);
var removeFeatureSpy = sinon.spy();
ol.events.listen(vectorSource, 'removefeature', removeFeatureSpy);
var clearSourceSpy = sinon.spy();
ol.events.listen(vectorSource, 'clear', clearSourceSpy);
vectorSource.clear();
expect(vectorSource.getFeatures()).to.eql([]);
expect(vectorSource.isEmpty()).to.be(true);
expect(changeSpy).to.be.called();
expect(changeSpy.callCount).to.be(1);
expect(removeFeatureSpy).to.be.called();
expect(removeFeatureSpy.callCount).to.be(features.length);
expect(clearSourceSpy).to.be.called();
expect(clearSourceSpy.callCount).to.be(1);
});
});
describe('#forEachFeatureInExtent', function() {
it('is called the expected number of times', function() {
var f = sinon.spy();
vectorSource.forEachFeatureInExtent(infiniteExtent, f);
expect(f.callCount).to.be(10);
});
it('allows breaking out', function() {
var count = 0;
var result = vectorSource.forEachFeatureInExtent(infiniteExtent,
function(f) {
return ++count == 5;
});
expect(result).to.be(true);
expect(count).to.be(5);
});
});
describe('#getFeaturesInExtent', function() {
it('returns the expected number of features', function() {
expect(vectorSource.getFeaturesInExtent(infiniteExtent)).
to.have.length(10);
});
});
describe('#isEmpty', function() {
it('returns false', function() {
expect(vectorSource.isEmpty()).to.be(false);
});
});
describe('#removeFeature', function() {
it('works as expected', function() {
var i;
for (i = features.length - 1; i >= 0; --i) {
vectorSource.removeFeature(features[i]);
expect(vectorSource.getFeaturesInExtent(infiniteExtent)).
have.length(i);
}
});
it('fires a change event', function() {
var listener = sinon.spy();
ol.events.listen(vectorSource, 'change', listener);
vectorSource.removeFeature(features[0]);
expect(listener).to.be.called();
});
});
describe('modifying a feature\'s geometry', function() {
it('keeps the R-Tree index up to date', function() {
expect(vectorSource.getFeaturesInExtent([0, 0, 1, 1])).
to.have.length(10);
features[0].getGeometry().setCoordinates([100, 100]);
expect(vectorSource.getFeaturesInExtent([0, 0, 1, 1])).
to.have.length(9);
features[0].getGeometry().setCoordinates([0.5, 0.5]);
expect(vectorSource.getFeaturesInExtent([0, 0, 1, 1])).
to.have.length(10);
});
});
describe('setting a features geometry', function() {
it('keeps the R-Tree index up to date', function() {
expect(vectorSource.getFeaturesInExtent([0, 0, 1, 1])).
to.have.length(10);
features[0].setGeometry(new ol.geom.Point([100, 100]));
expect(vectorSource.getFeaturesInExtent([0, 0, 1, 1])).
to.have.length(9);
});
});
});
describe('tracking changes to features', function() {
var vectorSource;
beforeEach(function() {
vectorSource = new ol.source.Vector();
});
it('keeps its index up-to-date', function() {
var feature = new ol.Feature(new ol.geom.Point([1, 1]));
vectorSource.addFeature(feature);
expect(vectorSource.getFeaturesInExtent([0, 0, 2, 2])).
to.eql([feature]);
feature.getGeometry().setCoordinates([3, 3]);
expect(vectorSource.getFeaturesInExtent([0, 0, 2, 2])).
to.be.empty();
expect(vectorSource.getFeaturesInExtent([2, 2, 4, 4])).
to.eql([feature]);
});
it('handles features with null geometries', function() {
var feature = new ol.Feature(null);
vectorSource.addFeature(feature);
expect(vectorSource.getFeatures()).to.eql([feature]);
});
it('handles features with geometries changing from null', function() {
var feature = new ol.Feature(null);
vectorSource.addFeature(feature);
expect(vectorSource.getFeatures()).to.eql([feature]);
feature.setGeometry(new ol.geom.Point([1, 1]));
expect(vectorSource.getFeaturesInExtent([0, 0, 2, 2])).
to.eql([feature]);
expect(vectorSource.getFeatures()).to.eql([feature]);
});
it('handles features with geometries changing to null', function() {
var feature = new ol.Feature(new ol.geom.Point([1, 1]));
vectorSource.addFeature(feature);
expect(vectorSource.getFeatures()).to.eql([feature]);
expect(vectorSource.getFeaturesInExtent([0, 0, 2, 2])).
to.eql([feature]);
feature.setGeometry(null);
expect(vectorSource.getFeaturesInExtent([0, 0, 2, 2])).to.be.empty();
expect(vectorSource.getFeatures()).to.eql([feature]);
});
it('fires a change event when setting a feature\'s property', function() {
var feature = new ol.Feature(new ol.geom.Point([1, 1]));
vectorSource.addFeature(feature);
var listener = sinon.spy();
ol.events.listen(vectorSource, 'change', listener);
feature.set('foo', 'bar');
expect(listener).to.be.called();
});
it('fires a changefeature event when updating a feature', function() {
var feature = new ol.Feature(new ol.geom.Point([1, 1]));
vectorSource.addFeature(feature);
var listener = sinon.spy(function(event) {
expect(event.feature).to.be(feature);
});
vectorSource.on('changefeature', listener);
feature.setStyle(null);
expect(listener).to.be.called();
});
});
describe('#getFeatureById()', function() {
var source;
beforeEach(function() {
source = new ol.source.Vector();
});
it('returns a feature by id', function() {
var feature = new ol.Feature();
feature.setId('foo');
source.addFeature(feature);
expect(source.getFeatureById('foo')).to.be(feature);
});
it('returns a feature by id (set after add)', function() {
var feature = new ol.Feature();
source.addFeature(feature);
expect(source.getFeatureById('foo')).to.be(null);
feature.setId('foo');
expect(source.getFeatureById('foo')).to.be(feature);
});
it('returns null when no feature is found', function() {
var feature = new ol.Feature();
feature.setId('foo');
source.addFeature(feature);
expect(source.getFeatureById('bar')).to.be(null);
});
it('returns null after removing feature', function() {
var feature = new ol.Feature();
feature.setId('foo');
source.addFeature(feature);
expect(source.getFeatureById('foo')).to.be(feature);
source.removeFeature(feature);
expect(source.getFeatureById('foo')).to.be(null);
});
it('returns null after unsetting id', function() {
var feature = new ol.Feature();
feature.setId('foo');
source.addFeature(feature);
expect(source.getFeatureById('foo')).to.be(feature);
feature.setId(undefined);
expect(source.getFeatureById('foo')).to.be(null);
});
it('returns null after clear', function() {
var feature = new ol.Feature();
feature.setId('foo');
source.addFeature(feature);
expect(source.getFeatureById('foo')).to.be(feature);
source.clear();
expect(source.getFeatureById('foo')).to.be(null);
});
it('returns null when no features are indexed', function() {
expect(source.getFeatureById('foo')).to.be(null);
source.addFeature(new ol.Feature());
expect(source.getFeatureById('foo')).to.be(null);
});
it('returns correct feature after add/remove/add', function() {
expect(source.getFeatureById('foo')).to.be(null);
var first = new ol.Feature();
first.setId('foo');
source.addFeature(first);
expect(source.getFeatureById('foo')).to.be(first);
source.removeFeature(first);
expect(source.getFeatureById('foo')).to.be(null);
var second = new ol.Feature();
second.setId('foo');
source.addFeature(second);
expect(source.getFeatureById('foo')).to.be(second);
});
it('returns correct feature after add/change', function() {
expect(source.getFeatureById('foo')).to.be(null);
var feature = new ol.Feature();
feature.setId('foo');
source.addFeature(feature);
expect(source.getFeatureById('foo')).to.be(feature);
feature.setId('bar');
expect(source.getFeatureById('foo')).to.be(null);
expect(source.getFeatureById('bar')).to.be(feature);
});
});
describe('#loadFeatures', function() {
describe('with no loader and the "all" strategy', function() {
it('stores the infinity extent in the Rtree', function() {
var source = new ol.source.Vector();
source.loadFeatures([-10000, -10000, 10000, 10000], 1,
ol.proj.get('EPSG:3857'));
var loadedExtents = source.loadedExtentsRtree_.getAll();
expect(loadedExtents).to.have.length(1);
expect(loadedExtents[0].extent).to.eql(
[-Infinity, -Infinity, Infinity, Infinity]);
});
});
});
describe('the feature id index', function() {
var source;
beforeEach(function() {
source = new ol.source.Vector();
});
it('ignores features with the same id', function() {
var feature = new ol.Feature();
feature.setId('foo');
source.addFeature(feature);
var dupe = new ol.Feature();
dupe.setId('foo');
source.addFeature(dupe);
expect(source.getFeatures()).to.have.length(1);
expect(source.getFeatureById('foo')).to.be(feature);
});
it('allows changing feature and set the same id', function() {
var foo = new ol.Feature();
foo.setId('foo');
source.addFeature(foo);
var bar = new ol.Feature();
bar.setId('bar');
source.addFeature(bar);
bar.setId('foo');
expect(source.getFeatureById('foo')).to.be(bar);
});
});
describe('the undefined feature id index', function() {
var source;
beforeEach(function() {
source = new ol.source.Vector();
});
it('disallows adding the same feature twice', function() {
var feature = new ol.Feature();
source.addFeature(feature);
expect(function() {
source.addFeature(feature);
}).to.throwException();
});
});
describe('with useSpatialIndex set to false', function() {
var source;
beforeEach(function() {
source = new ol.source.Vector({useSpatialIndex: false});
});
it('returns a features collection', function() {
expect(source.getFeaturesCollection()).to.be.a(ol.Collection);
});
it('#forEachFeatureInExtent loops through all features', function() {
source.addFeatures([new ol.Feature(), new ol.Feature()]);
var spy = sinon.spy();
source.forEachFeatureInExtent([0, 0, 0, 0], spy);
expect(spy.callCount).to.be(2);
});
});
describe('with a collection of features', function() {
var collection, source;
beforeEach(function() {
source = new ol.source.Vector({
useSpatialIndex: false
});
collection = source.getFeaturesCollection();
});
it('creates a features collection', function() {
expect(source.getFeaturesCollection()).to.not.be(null);
});
it('adding/removing features keeps the collection in sync', function() {
var feature = new ol.Feature();
source.addFeature(feature);
expect(collection.getLength()).to.be(1);
source.removeFeature(feature);
expect(collection.getLength()).to.be(0);
});
it('#clear() features keeps the collection in sync', function() {
var feature = new ol.Feature();
source.addFeatures([feature]);
expect(collection.getLength()).to.be(1);
source.clear();
expect(collection.getLength()).to.be(0);
source.addFeatures([feature]);
expect(collection.getLength()).to.be(1);
source.clear(true);
expect(collection.getLength()).to.be(0);
});
it('keeps the source\'s features in sync with the collection', function() {
var feature = new ol.Feature();
collection.push(feature);
expect(source.getFeatures().length).to.be(1);
collection.remove(feature);
expect(source.getFeatures().length).to.be(0);
collection.extend([feature]);
expect(source.getFeatures().length).to.be(1);
collection.clear();
expect(source.getFeatures().length).to.be(0);
});
});
describe('with a collection of features plus spatial index', function() {
var collection, source;
beforeEach(function() {
collection = new ol.Collection();
source = new ol.source.Vector({
features: collection
});
});
it('#getFeaturesCollection returns the configured collection', function() {
expect(source.getFeaturesCollection()).to.equal(collection);
});
it('adding/removing features keeps the collection in sync', function() {
var feature = new ol.Feature();
source.addFeature(feature);
expect(collection.getLength()).to.be(1);
source.removeFeature(feature);
expect(collection.getLength()).to.be(0);
});
it('#clear() features keeps the collection in sync', function() {
var feature = new ol.Feature();
source.addFeatures([feature]);
expect(collection.getLength()).to.be(1);
source.clear();
expect(collection.getLength()).to.be(0);
source.addFeatures([feature]);
expect(collection.getLength()).to.be(1);
source.clear(true);
expect(collection.getLength()).to.be(0);
});
it('keeps the source\'s features in sync with the collection', function() {
var feature = new ol.Feature();
collection.push(feature);
expect(source.getFeatures().length).to.be(1);
collection.remove(feature);
expect(source.getFeatures().length).to.be(0);
collection.extend([feature]);
expect(source.getFeatures().length).to.be(1);
collection.clear();
expect(source.getFeatures().length).to.be(0);
});
});
});