open-consul/ui/packages/consul-ui/tests/unit/utils/dom/event-source/openable-test.js

46 lines
1.8 KiB
JavaScript

import domEventSourceOpenable from 'consul-ui/utils/dom/event-source/openable';
import { module } from 'qunit';
import test from 'ember-sinon-qunit/test-support/test';
module('Unit | Utility | dom/event-source/openable', function() {
const createEventSource = function() {
const EventSource = function(cb) {
this.readyState = 1;
this.source = cb;
this.source.apply(this, arguments);
};
const o = EventSource.prototype;
['addEventListener', 'removeEventListener', 'dispatchEvent', 'close'].forEach(function(item) {
o[item] = function() {};
});
return EventSource;
};
test('it creates an Openable class implementing EventSource', function(assert) {
const EventSource = createEventSource();
const OpenableEventSource = domEventSourceOpenable(EventSource);
assert.ok(OpenableEventSource instanceof Function);
const source = new OpenableEventSource(function() {});
assert.ok(source instanceof EventSource);
});
test('it reopens the event source when open is called', function(assert) {
const callable = this.stub();
const EventSource = createEventSource();
const OpenableEventSource = domEventSourceOpenable(EventSource);
const source = new OpenableEventSource(callable);
assert.equal(source.readyState, 1);
// first automatic EventSource `open`
assert.ok(callable.calledOnce);
source.readyState = 3;
source.open();
// still only called once as it hasn't completely closed yet
// therefore is just opened by resetting the readyState
assert.ok(callable.calledOnce);
assert.equal(source.readyState, 1);
// properly close the source
source.readyState = 2;
source.open();
// this time it is opened via a recall of the callable
assert.ok(callable.calledTwice);
});
});