054af09032
This updates ESLint and our shared eslint-config-openlayers to use Prettier. Most formatting changes were automatically applied with this:
npm run lint -- --fix
A few manual changes were required:
* In `examples/offscreen-canvas.js`, the `//eslint-disable-line` comment needed to be moved to the appropriate line to disable the error about the `'worker-loader!./offscreen-canvas.worker.js'` import.
* In `examples/webpack/exapmle-builder.js`, spaces could not be added after a couple `function`s for some reason. While editing this, I reworked `ExampleBuilder` to be a class.
* In `src/ol/format/WMSGetFeatureInfo.js`, the `// @ts-ignore` comment needed to be moved down one line so it applied to the `parsersNS` argument.
95 lines
3.3 KiB
JavaScript
95 lines
3.3 KiB
JavaScript
import EventTarget from '../../../src/ol/events/Target.js';
|
|
import {listen, listenOnce, unlistenByKey} from '../../../src/ol/events.js';
|
|
|
|
describe('ol.events', function () {
|
|
let add, target;
|
|
|
|
beforeEach(function () {
|
|
target = new EventTarget();
|
|
add = sinon.spy(target, 'addEventListener');
|
|
});
|
|
|
|
afterEach(function () {
|
|
target.addEventListener.restore();
|
|
});
|
|
|
|
describe('listen()', function () {
|
|
it('calls addEventListener on the target', function () {
|
|
listen(target, 'foo', function () {});
|
|
expect(add.callCount).to.be(1);
|
|
});
|
|
it('returns a key', function () {
|
|
const key = listen(target, 'foo', function () {});
|
|
expect(key).to.be.a(Object);
|
|
});
|
|
it('does not add the same listener twice', function () {
|
|
const listener = function () {};
|
|
listen(target, 'foo', listener);
|
|
listen(target, 'foo', listener);
|
|
expect(target.listeners_['foo'].length).to.be(1);
|
|
});
|
|
it('only treats listeners as same when all args are equal', function () {
|
|
const listener = function () {};
|
|
listen(target, 'foo', listener, {});
|
|
listen(target, 'foo', listener, {});
|
|
listen(target, 'foo', listener, undefined);
|
|
expect(target.listeners_['foo'].length).to.be(3);
|
|
});
|
|
});
|
|
|
|
describe('listenOnce()', function () {
|
|
it('creates a one-off listener', function () {
|
|
const target = new EventTarget();
|
|
const listener = sinon.spy();
|
|
listenOnce(target, 'foo', listener);
|
|
target.dispatchEvent('foo');
|
|
expect(listener.callCount).to.be(1);
|
|
target.dispatchEvent('foo');
|
|
expect(listener.callCount).to.be(1);
|
|
});
|
|
it('Adds the same listener twice', function () {
|
|
const listener = sinon.spy();
|
|
listenOnce(target, 'foo', listener);
|
|
listenOnce(target, 'foo', listener);
|
|
target.dispatchEvent('foo');
|
|
target.dispatchEvent('foo');
|
|
target.dispatchEvent('foo');
|
|
expect(listener.callCount).to.be(2);
|
|
});
|
|
});
|
|
|
|
describe('unlistenByKey()', function () {
|
|
it('unregisters previously registered listeners', function () {
|
|
const key = listen(target, 'foo', function () {});
|
|
unlistenByKey(key);
|
|
expect(target.listeners_['foo']).to.be(undefined);
|
|
});
|
|
it('works with multiple types', function () {
|
|
const key = listen(target, ['foo', 'bar'], function () {});
|
|
unlistenByKey(key);
|
|
expect(target.listeners_['foo']).to.be(undefined);
|
|
expect(target.listeners_['bar']).to.be(undefined);
|
|
});
|
|
});
|
|
|
|
describe('Listener keys', function () {
|
|
it('does not register duplicated listeners', function () {
|
|
const target = new EventTarget();
|
|
const listener = function () {};
|
|
const key1 = listen(target, 'foo', listener);
|
|
expect(target.listeners_['foo']).to.eql([listener]);
|
|
const key2 = listen(target, 'foo', listener);
|
|
expect(target.listeners_['foo']).to.eql([listener]);
|
|
expect(key1.listener).to.equal(key2.listener);
|
|
});
|
|
it('registers multiple listeners if this object is different', function () {
|
|
const target = new EventTarget();
|
|
const listener = function () {};
|
|
const key1 = listen(target, 'foo', listener, {});
|
|
const key2 = listen(target, 'foo', listener, {});
|
|
expect(key1.listener).to.not.equal(key2.listener);
|
|
expect(target.listeners_['foo']).to.eql([key1.listener, key2.listener]);
|
|
});
|
|
});
|
|
});
|