370 lines
12 KiB
JavaScript
370 lines
12 KiB
JavaScript
import _ol_events_ from '../../../src/ol/events.js';
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import _ol_Collection_ from '../../../src/ol/Collection.js';
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import _ol_CollectionEventType_ from '../../../src/ol/CollectionEventType.js';
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describe('ol.collection', function() {
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var collection;
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beforeEach(function() {
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collection = new _ol_Collection_();
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});
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describe('create an empty collection', function() {
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it('creates an empty collection', function() {
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expect(collection.getLength()).to.eql(0);
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expect(collection.getArray()).to.be.empty();
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expect(collection.item(0)).to.be(undefined);
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});
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});
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describe('create a collection from an array', function() {
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it('creates the expected collection', function() {
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var array = [0, 1, 2];
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var collection = new _ol_Collection_(array);
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expect(collection.item(0)).to.eql(0);
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expect(collection.item(1)).to.eql(1);
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expect(collection.item(2)).to.eql(2);
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});
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});
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describe('push to a collection', function() {
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it('adds elements to the collection', function() {
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var length = collection.push(1);
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expect(collection.getLength()).to.eql(length);
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expect(collection.getArray()).to.eql([1]);
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expect(collection.item(0)).to.eql(1);
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});
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it('returns the correct new length of the collection', function() {
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var length;
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_ol_events_.listen(collection, 'add', function(event) {
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if (event.element === 'remove_me') {
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collection.remove(event.element);
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}
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});
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length = collection.push('keep_me');
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expect(collection.getLength()).to.eql(length);
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length = collection.push('remove_me');
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expect(collection.getLength()).to.eql(length);
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});
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});
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describe('pop from a collection', function() {
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it('removes elements from the collection', function() {
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collection.push(1);
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collection.pop();
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expect(collection.getLength()).to.eql(0);
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expect(collection.getArray()).to.be.empty();
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expect(collection.item(0)).to.be(undefined);
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});
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});
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describe('insertAt', function() {
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it('inserts elements at the correct location', function() {
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collection = new _ol_Collection_([0, 2]);
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collection.insertAt(1, 1);
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expect(collection.item(0)).to.eql(0);
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expect(collection.item(1)).to.eql(1);
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expect(collection.item(2)).to.eql(2);
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});
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});
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describe('setAt', function() {
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it('sets at the correct location', function() {
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collection.setAt(1, 1);
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expect(collection.getLength()).to.eql(2);
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expect(collection.item(0)).to.be(undefined);
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expect(collection.item(1)).to.eql(1);
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});
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});
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describe('removeAt', function() {
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it('removes elements at the correction', function() {
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var collection = new _ol_Collection_([0, 1, 2]);
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collection.removeAt(1);
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expect(collection.item(0)).to.eql(0);
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expect(collection.item(1)).to.eql(2);
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});
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});
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describe('forEach', function() {
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var cb;
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beforeEach(function() {
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cb = sinon.spy();
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});
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describe('on an empty collection', function() {
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it('does not call the callback', function() {
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collection.forEach(cb);
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expect(cb).to.not.be.called();
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});
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});
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describe('on a non-empty collection', function() {
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it('does call the callback', function() {
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collection.push(1);
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collection.push(2);
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collection.forEach(cb);
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expect(cb.callCount).to.eql(2);
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});
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});
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describe('scope', function() {
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it('callbacks get the correct scope', function() {
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var collection = new _ol_Collection_([0]);
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var that;
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var uniqueObj = {};
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collection.forEach(function(elem) {
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that = this;
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}, uniqueObj);
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expect(that).to.be(uniqueObj);
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});
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});
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});
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describe('remove', function() {
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it('removes the first matching element', function() {
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var collection = new _ol_Collection_([0, 1, 2]);
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expect(collection.remove(1)).to.eql(1);
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expect(collection.getArray()).to.eql([0, 2]);
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expect(collection.getLength()).to.eql(2);
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});
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it('fires a remove event', function() {
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var collection = new _ol_Collection_([0, 1, 2]);
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var cb = sinon.spy();
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_ol_events_.listen(collection, _ol_CollectionEventType_.REMOVE, cb);
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expect(collection.remove(1)).to.eql(1);
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expect(cb).to.be.called();
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expect(cb.lastCall.args[0].element).to.eql(1);
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});
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it('does not remove more than one matching element', function() {
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var collection = new _ol_Collection_([0, 1, 1, 2]);
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expect(collection.remove(1)).to.eql(1);
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expect(collection.getArray()).to.eql([0, 1, 2]);
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expect(collection.getLength()).to.eql(3);
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});
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it('returns undefined if the element is not found', function() {
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var collection = new _ol_Collection_([0, 1, 2]);
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expect(collection.remove(3)).to.be(undefined);
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expect(collection.getArray()).to.eql([0, 1, 2]);
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expect(collection.getLength()).to.eql(3);
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});
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});
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describe('setAt and event', function() {
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it('does dispatch events', function() {
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var collection = new _ol_Collection_(['a', 'b']);
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var added, removed;
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_ol_events_.listen(collection, _ol_CollectionEventType_.ADD, function(e) {
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added = e.element;
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});
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_ol_events_.listen(
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collection, _ol_CollectionEventType_.REMOVE, function(e) {
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removed = e.element;
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});
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collection.setAt(1, 1);
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expect(added).to.eql(1);
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expect(removed).to.eql('b');
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});
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});
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describe('removeAt and event', function() {
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it('does dispatch events', function() {
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var collection = new _ol_Collection_(['a']);
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var removed;
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_ol_events_.listen(
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collection, _ol_CollectionEventType_.REMOVE, function(e) {
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removed = e.element;
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});
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collection.pop();
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expect(removed).to.eql('a');
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});
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});
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describe('insertAt and event', function() {
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it('does dispatch events', function() {
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var collection = new _ol_Collection_([0, 2]);
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var added;
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_ol_events_.listen(
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collection, _ol_CollectionEventType_.ADD, function(e) {
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added = e.element;
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});
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collection.insertAt(1, 1);
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expect(added).to.eql(1);
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});
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});
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describe('setAt beyond end', function() {
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it('triggers events properly', function() {
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var added = [];
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_ol_events_.listen(
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collection, _ol_CollectionEventType_.ADD, function(e) {
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added.push(e.element);
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});
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collection.setAt(2, 0);
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expect(collection.getLength()).to.eql(3);
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expect(collection.item(0)).to.be(undefined);
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expect(collection.item(1)).to.be(undefined);
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expect(collection.item(2)).to.eql(0);
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expect(added.length).to.eql(3);
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expect(added[0]).to.eql(undefined);
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expect(added[1]).to.eql(undefined);
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expect(added[2]).to.eql(0);
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});
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});
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describe('change:length event', function() {
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var collection, cb;
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beforeEach(function() {
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collection = new _ol_Collection_([0, 1, 2]);
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cb = sinon.spy();
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_ol_events_.listen(collection, 'change:length', cb);
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});
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describe('insertAt', function() {
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it('triggers change:length event', function() {
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collection.insertAt(2, 3);
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expect(cb).to.be.called();
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});
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});
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describe('removeAt', function() {
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it('triggers change:length event', function() {
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collection.removeAt(0);
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expect(cb).to.be.called();
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});
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});
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describe('setAt', function() {
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it('does not trigger change:length event', function() {
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collection.setAt(1, 1);
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expect(cb).to.not.be.called();
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});
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});
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});
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describe('add event', function() {
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it('triggers add when pushing', function() {
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var collection = new _ol_Collection_();
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var elem;
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_ol_events_.listen(collection, _ol_CollectionEventType_.ADD, function(e) {
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elem = e.element;
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});
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var length = collection.push(1);
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expect(elem).to.eql(length);
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});
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});
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describe('remove event', function() {
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var collection, cb1, cb2;
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beforeEach(function() {
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collection = new _ol_Collection_([1]);
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cb1 = sinon.spy();
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cb2 = sinon.spy();
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});
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describe('setAt', function() {
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it('triggers remove', function() {
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_ol_events_.listen(collection, _ol_CollectionEventType_.ADD, cb1);
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_ol_events_.listen(collection, _ol_CollectionEventType_.REMOVE, cb2);
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collection.setAt(0, 2);
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expect(cb2.lastCall.args[0].element).to.eql(1);
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expect(cb1.lastCall.args[0].element).to.eql(2);
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});
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});
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describe('pop', function() {
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it('triggers remove', function() {
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_ol_events_.listen(collection, _ol_CollectionEventType_.REMOVE, cb1);
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collection.pop();
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expect(cb1.lastCall.args[0].element).to.eql(1);
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});
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});
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});
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describe('extending a collection', function() {
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it('adds elements to end of the collection', function() {
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collection.extend([1, 2]);
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expect(collection.getLength()).to.eql(2);
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expect(collection.getArray()).to.eql([1, 2]);
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expect(collection.item(0)).to.eql(1);
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expect(collection.item(1)).to.eql(2);
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});
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it('fires events', function() {
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var collection = new _ol_Collection_();
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var elems = [];
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_ol_events_.listen(collection, _ol_CollectionEventType_.ADD, function(e) {
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elems.push(e.element);
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});
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collection.extend([1, 2]);
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expect(elems).to.eql([1, 2]);
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});
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});
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describe('unique collection', function() {
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it('allows unique items in the constructor', function() {
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new _ol_Collection_([{}, {}, {}], {unique: true});
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});
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it('throws if duplicate items are passed to the constructor', function() {
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var item = {};
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var call = function() {
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new _ol_Collection_([item, item], {unique: true});
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};
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expect(call).to.throwException();
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});
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it('allows unique items to be added via push', function() {
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var unique = new _ol_Collection_(undefined, {unique: true});
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unique.push({});
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unique.push({});
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});
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it('throws if duplicate items are added via push', function() {
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var unique = new _ol_Collection_(undefined, {unique: true});
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var item = {};
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unique.push(item);
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var call = function() {
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unique.push(item);
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};
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expect(call).to.throwException();
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});
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it('allows unique items to be added via insertAt', function() {
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var unique = new _ol_Collection_(undefined, {unique: true});
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unique.insertAt(0, {});
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unique.insertAt(0, {});
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});
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it('throws if duplicate items are added via insertAt', function() {
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var unique = new _ol_Collection_(undefined, {unique: true});
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var item = {};
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unique.insertAt(0, item);
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var call = function() {
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unique.insertAt(0, item);
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};
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expect(call).to.throwException();
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});
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it('allows unique items to be added via setAt', function() {
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var unique = new _ol_Collection_(undefined, {unique: true});
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unique.setAt(0, {});
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unique.setAt(1, {});
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});
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it('allows items to be reset via setAt', function() {
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var unique = new _ol_Collection_(undefined, {unique: true});
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var item = {};
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unique.setAt(0, item);
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unique.setAt(0, item);
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});
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it('throws if duplicate items are added via setAt', function() {
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var unique = new _ol_Collection_(undefined, {unique: true});
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var item = {};
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unique.setAt(0, item);
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var call = function() {
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unique.setAt(1, item);
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};
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expect(call).to.throwException();
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});
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});
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});
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