forked from tornado-packages/archive-monorepo
102 lines
3.6 KiB
TypeScript
102 lines
3.6 KiB
TypeScript
import * as ava from 'ava';
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import { XMLHttpRequest } from '../xml-http-request';
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import { ProgressEvent } from '../progress-event';
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function contextualize<T>(getContext: () => T): ava.RegisterContextual<T> {
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ava.test.beforeEach(t => {
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Object.assign(t.context, getContext());
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});
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return ava.test;
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}
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const test = contextualize(() => ({
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xhr: new XMLHttpRequest(),
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loadEvent: new ProgressEvent('load')
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}));
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test.beforeEach(t => {
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t.context.xhr = new XMLHttpRequest();
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t.context.loadEvent = new ProgressEvent('load');
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});
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test('XMLHttpRequestEventTarget dispatchEvent works with a DOM0 listener', t => {
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t.plan(1);
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t.context.xhr.onload = () => t.pass();
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t.context.xhr.dispatchEvent(t.context.loadEvent);
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});
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test('XMLHttpRequestEventTarget dispatchEvent works with a DOM2 listener', t => {
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t.plan(1);
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t.context.xhr.addEventListener('load', () => t.pass());
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t.context.xhr.dispatchEvent(t.context.loadEvent);
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});
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test('XMLHttpRequestEventTarget dispatchEvent executes DOM2 listeners in order', t => {
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t.plan(1);
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let firstExecuted = false;
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t.context.xhr.addEventListener('load', () => firstExecuted = true);
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t.context.xhr.addEventListener('load', () => {
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if (firstExecuted) { t.pass(); }
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});
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t.context.xhr.dispatchEvent(t.context.loadEvent);
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});
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test('XMLHttpRequestEventTarget removes a DOM2 listener correctly', t => {
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t.plan(1);
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const listener = () => t.pass();
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t.context.xhr.addEventListener('load', listener);
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t.context.xhr.dispatchEvent(t.context.loadEvent);
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t.context.xhr.removeEventListener('load', listener);
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t.context.xhr.dispatchEvent(t.context.loadEvent);
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});
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test('XMLHttpRequestEventTarget binds this correctly in a DOM0 listener', t => {
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t.plan(1);
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t.context.xhr.onload = function () { if (this === t.context.xhr) { t.pass(); } };
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t.context.xhr.dispatchEvent(t.context.loadEvent);
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});
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test('XMLHttpRequestEventTarget binds this correctly in a DOM2 listener', t => {
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t.plan(1);
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t.context.xhr.addEventListener('load', function () { if (this === t.context.xhr) { t.pass(); } });
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t.context.xhr.dispatchEvent(t.context.loadEvent);
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});
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test('XMLHttpRequestEventTarget sets target correctly in a DOM0 listener', t => {
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t.plan(1);
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t.context.xhr.onload = function (event) { if (event.target === t.context.xhr) { t.pass(); } };
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t.context.xhr.dispatchEvent(t.context.loadEvent);
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});
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test('XMLHttpRequestEventTarget sets target correctly in a DOM2 listener', t => {
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t.plan(1);
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t.context.xhr.addEventListener('load', function (event) { if (event.target === t.context.xhr) { t.pass(); } });
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t.context.xhr.dispatchEvent(t.context.loadEvent);
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});
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test('XMLHttpRequestEventTarget works with a DOM0 and two DOM2 listeners', t => {
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t.plan(3);
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t.context.xhr.addEventListener('load', () => t.pass());
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t.context.xhr.onload = () => t.pass();
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t.context.xhr.addEventListener('load', () => t.pass());
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t.context.xhr.dispatchEvent(t.context.loadEvent);
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});
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test('XMLHttpRequestEventTarget does not invoke a DOM0 listener for a different event', t => {
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t.plan(0);
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['onerror', 'onloadstart', 'onprogress', 'onabort', 'ontimeout', 'onloadend']
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.forEach(eventType => t.context.xhr[eventType] = () => t.pass());
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t.context.xhr.dispatchEvent(t.context.loadEvent);
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});
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test('XMLHttpRequestEventTarget does not invoke a DOM2 listener for a different event', t => {
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t.plan(0);
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['error', 'loadstart', 'progress', 'abort', 'timeout', 'loadend']
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.forEach(eventType => t.context.xhr.addEventListener(eventType, () => t.pass()));
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t.context.xhr.dispatchEvent(t.context.loadEvent);
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});
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// TODO:
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// * remove event listener from an event that had no listeners
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// * remove non-existent event listener from an event that had listeners
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