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test: add WPT tests for dom/events · nodejs/node@eece34c · GitHub

test: add WPT tests for dom/events · nodejs/node@eece34c · GitHub
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nissy-dev
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targos
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test: add WPT tests for dom/events
PR-URL: #43151 Refs: #40678 Reviewed-By: Masashi Hirano <shisama07@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: James M Snell <jasnell@gmail.com>
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‎test/fixtures/wpt/README.md‎

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- common: https://github.com/web-platform-tests/wpt/tree/03c5072aff/common
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- console: https://github.com/web-platform-tests/wpt/tree/3b1f72e99a/console
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- dom/abort: https://github.com/web-platform-tests/wpt/tree/c49cafb491/dom/abort
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- dom/events: https://github.com/web-platform-tests/wpt/tree/f8821adb28/dom/events
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- encoding: https://github.com/web-platform-tests/wpt/tree/35f70910d3/encoding
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- FileAPI: https://github.com/web-platform-tests/wpt/tree/3b279420d4/FileAPI
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- hr-time: https://github.com/web-platform-tests/wpt/tree/9910784394/hr-time

‎test/fixtures/wpt/dom/events/AddEventListenerOptions-once.any.js‎

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// META: title=AddEventListenerOptions.once
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"use strict";
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test(function() {
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var invoked_once = false;
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var invoked_normal = false;
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function handler_once() {
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invoked_once = true;
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}
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function handler_normal() {
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invoked_normal = true;
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}
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const et = new EventTarget();
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et.addEventListener('test', handler_once, {once: true});
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et.addEventListener('test', handler_normal);
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et.dispatchEvent(new Event('test'));
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assert_equals(invoked_once, true, "Once handler should be invoked");
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assert_equals(invoked_normal, true, "Normal handler should be invoked");
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invoked_once = false;
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invoked_normal = false;
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et.dispatchEvent(new Event('test'));
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assert_equals(invoked_once, false, "Once handler shouldn't be invoked again");
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assert_equals(invoked_normal, true, "Normal handler should be invoked again");
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et.removeEventListener('test', handler_normal);
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}, "Once listener should be invoked only once");
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test(function() {
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const et = new EventTarget();
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var invoked_count = 0;
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function handler() {
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invoked_count++;
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if (invoked_count == 1)
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et.dispatchEvent(new Event('test'));
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}
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et.addEventListener('test', handler, {once: true});
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et.dispatchEvent(new Event('test'));
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assert_equals(invoked_count, 1, "Once handler should only be invoked once");
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invoked_count = 0;
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function handler2() {
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invoked_count++;
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if (invoked_count == 1)
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et.addEventListener('test', handler2, {once: true});
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if (invoked_count <= 2)
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et.dispatchEvent(new Event('test'));
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}
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et.addEventListener('test', handler2, {once: true});
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et.dispatchEvent(new Event('test'));
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assert_equals(invoked_count, 2, "Once handler should only be invoked once after each adding");
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}, "Once listener should be invoked only once even if the event is nested");
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test(function() {
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var invoked_count = 0;
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function handler() {
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invoked_count++;
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}
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const et = new EventTarget();
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et.addEventListener('test', handler, {once: true});
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et.addEventListener('test', handler);
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et.dispatchEvent(new Event('test'));
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assert_equals(invoked_count, 1, "The handler should only be added once");
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invoked_count = 0;
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et.dispatchEvent(new Event('test'));
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assert_equals(invoked_count, 0, "The handler was added as a once listener");
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invoked_count = 0;
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et.addEventListener('test', handler, {once: true});
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et.removeEventListener('test', handler);
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et.dispatchEvent(new Event('test'));
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assert_equals(invoked_count, 0, "The handler should have been removed");
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}, "Once listener should be added / removed like normal listeners");
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test(function() {
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const et = new EventTarget();
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var invoked_count = 0;
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for (let n = 4; n > 0; n--) {
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et.addEventListener('test', (e) => {
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invoked_count++;
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e.stopImmediatePropagation();
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}, {once: true});
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}
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for (let n = 4; n > 0; n--) {
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et.dispatchEvent(new Event('test'));
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}
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assert_equals(invoked_count, 4, "The listeners should be invoked");
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}, "Multiple once listeners should be invoked even if the stopImmediatePropagation is set");

‎test/fixtures/wpt/dom/events/AddEventListenerOptions-passive.any.js‎

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// META: title=AddEventListenerOptions.passive
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test(function() {
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var supportsPassive = false;
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var query_options = {
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get passive() {
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supportsPassive = true;
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return false;
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},
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get dummy() {
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assert_unreached("dummy value getter invoked");
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return false;
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}
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};
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const et = new EventTarget();
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et.addEventListener('test_event', null, query_options);
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assert_true(supportsPassive, "addEventListener doesn't support the passive option");
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supportsPassive = false;
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et.removeEventListener('test_event', null, query_options);
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assert_false(supportsPassive, "removeEventListener supports the passive option when it should not");
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}, "Supports passive option on addEventListener only");
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function testPassiveValue(optionsValue, expectedDefaultPrevented, existingEventTarget) {
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var defaultPrevented = undefined;
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var handler = function handler(e) {
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assert_false(e.defaultPrevented, "Event prematurely marked defaultPrevented");
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e.preventDefault();
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defaultPrevented = e.defaultPrevented;
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}
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const et = existingEventTarget || new EventTarget();
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et.addEventListener('test', handler, optionsValue);
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var uncanceled = et.dispatchEvent(new Event('test', {bubbles: true, cancelable: true}));
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assert_equals(defaultPrevented, expectedDefaultPrevented, "Incorrect defaultPrevented for options: " + JSON.stringify(optionsValue));
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assert_equals(uncanceled, !expectedDefaultPrevented, "Incorrect return value from dispatchEvent");
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et.removeEventListener('test', handler, optionsValue);
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}
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test(function() {
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testPassiveValue(undefined, true);
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testPassiveValue({}, true);
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testPassiveValue({passive: false}, true);
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testPassiveValue({passive: true}, false);
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testPassiveValue({passive: 0}, true);
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testPassiveValue({passive: 1}, false);
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}, "preventDefault should be ignored if-and-only-if the passive option is true");
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function testPassiveValueOnReturnValue(test, optionsValue, expectedDefaultPrevented) {
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var defaultPrevented = undefined;
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var handler = test.step_func(e => {
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assert_false(e.defaultPrevented, "Event prematurely marked defaultPrevented");
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e.returnValue = false;
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defaultPrevented = e.defaultPrevented;
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});
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const et = new EventTarget();
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et.addEventListener('test', handler, optionsValue);
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var uncanceled = et.dispatchEvent(new Event('test', {bubbles: true, cancelable: true}));
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assert_equals(defaultPrevented, expectedDefaultPrevented, "Incorrect defaultPrevented for options: " + JSON.stringify(optionsValue));
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assert_equals(uncanceled, !expectedDefaultPrevented, "Incorrect return value from dispatchEvent");
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et.removeEventListener('test', handler, optionsValue);
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}
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async_test(t => {
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testPassiveValueOnReturnValue(t, undefined, true);
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testPassiveValueOnReturnValue(t, {}, true);
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testPassiveValueOnReturnValue(t, {passive: false}, true);
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testPassiveValueOnReturnValue(t, {passive: true}, false);
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testPassiveValueOnReturnValue(t, {passive: 0}, true);
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testPassiveValueOnReturnValue(t, {passive: 1}, false);
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t.done();
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}, "returnValue should be ignored if-and-only-if the passive option is true");
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function testPassiveWithOtherHandlers(optionsValue, expectedDefaultPrevented) {
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var handlerInvoked1 = false;
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var dummyHandler1 = function() {
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handlerInvoked1 = true;
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};
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var handlerInvoked2 = false;
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var dummyHandler2 = function() {
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handlerInvoked2 = true;
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};
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const et = new EventTarget();
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et.addEventListener('test', dummyHandler1, {passive:true});
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et.addEventListener('test', dummyHandler2);
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testPassiveValue(optionsValue, expectedDefaultPrevented, et);
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assert_true(handlerInvoked1, "Extra passive handler not invoked");
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assert_true(handlerInvoked2, "Extra non-passive handler not invoked");
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et.removeEventListener('test', dummyHandler1);
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et.removeEventListener('test', dummyHandler2);
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}
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test(function() {
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testPassiveWithOtherHandlers({}, true);
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testPassiveWithOtherHandlers({passive: false}, true);
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testPassiveWithOtherHandlers({passive: true}, false);
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}, "passive behavior of one listener should be unaffected by the presence of other listeners");
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function testOptionEquivalence(optionValue1, optionValue2, expectedEquality) {
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var invocationCount = 0;
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var handler = function handler(e) {
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invocationCount++;
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}
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const et = new EventTarget();
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et.addEventListener('test', handler, optionValue1);
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et.addEventListener('test', handler, optionValue2);
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et.dispatchEvent(new Event('test', {bubbles: true}));
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assert_equals(invocationCount, expectedEquality ? 1 : 2, "equivalence of options " +
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JSON.stringify(optionValue1) + " and " + JSON.stringify(optionValue2));
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et.removeEventListener('test', handler, optionValue1);
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et.removeEventListener('test', handler, optionValue2);
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}
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test(function() {
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// Sanity check options that should be treated as distinct handlers
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testOptionEquivalence({capture:true}, {capture:false, passive:false}, false);
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testOptionEquivalence({capture:true}, {passive:true}, false);
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// Option values that should be treated as equivalent
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testOptionEquivalence({}, {passive:false}, true);
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testOptionEquivalence({passive:true}, {passive:false}, true);
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testOptionEquivalence(undefined, {passive:true}, true);
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testOptionEquivalence({capture: true, passive: false}, {capture: true, passive: true}, true);
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}, "Equivalence of option values");
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‎test/fixtures/wpt/dom/events/AddEventListenerOptions-signal.any.js‎

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'use strict';
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test(function() {
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let count = 0;
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function handler() {
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count++;
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}
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const et = new EventTarget();
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const controller = new AbortController();
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et.addEventListener('test', handler, { signal: controller.signal });
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et.dispatchEvent(new Event('test'));
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assert_equals(count, 1, "Adding a signal still adds a listener");
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et.dispatchEvent(new Event('test'));
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assert_equals(count, 2, "The listener was not added with the once flag");
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controller.abort();
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et.dispatchEvent(new Event('test'));
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assert_equals(count, 2, "Aborting on the controller removes the listener");
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et.addEventListener('test', handler, { signal: controller.signal });
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et.dispatchEvent(new Event('test'));
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assert_equals(count, 2, "Passing an aborted signal never adds the handler");
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}, "Passing an AbortSignal to addEventListener options should allow removing a listener");
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test(function() {
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let count = 0;
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function handler() {
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count++;
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}
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const et = new EventTarget();
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const controller = new AbortController();
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et.addEventListener('test', handler, { signal: controller.signal });
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et.removeEventListener('test', handler);
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et.dispatchEvent(new Event('test'));
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assert_equals(count, 0, "The listener was still removed");
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}, "Passing an AbortSignal to addEventListener does not prevent removeEventListener");
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test(function() {
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let count = 0;
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function handler() {
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count++;
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}
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const et = new EventTarget();
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const controller = new AbortController();
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et.addEventListener('test', handler, { signal: controller.signal, once: true });
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controller.abort();
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et.dispatchEvent(new Event('test'));
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assert_equals(count, 0, "The listener was still removed");
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}, "Passing an AbortSignal to addEventListener works with the once flag");
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test(function() {
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let count = 0;
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function handler() {
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count++;
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}
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const et = new EventTarget();
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const controller = new AbortController();
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et.addEventListener('test', handler, { signal: controller.signal, once: true });
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et.removeEventListener('test', handler);
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et.dispatchEvent(new Event('test'));
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assert_equals(count, 0, "The listener was still removed");
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}, "Removing a once listener works with a passed signal");
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test(function() {
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let count = 0;
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function handler() {
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count++;
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}
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const et = new EventTarget();
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const controller = new AbortController();
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et.addEventListener('first', handler, { signal: controller.signal, once: true });
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et.addEventListener('second', handler, { signal: controller.signal, once: true });
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controller.abort();
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et.dispatchEvent(new Event('first'));
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et.dispatchEvent(new Event('second'));
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assert_equals(count, 0, "The listener was still removed");
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}, "Passing an AbortSignal to multiple listeners");
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test(function() {
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let count = 0;
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function handler() {
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count++;
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}
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const et = new EventTarget();
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const controller = new AbortController();
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et.addEventListener('test', handler, { signal: controller.signal, capture: true });
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controller.abort();
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et.dispatchEvent(new Event('test'));
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assert_equals(count, 0, "The listener was still removed");
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}, "Passing an AbortSignal to addEventListener works with the capture flag");
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test(function() {
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let count = 0;
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function handler() {
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count++;
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}
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const et = new EventTarget();
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const controller = new AbortController();
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et.addEventListener('test', () => {
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controller.abort();
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}, { signal: controller.signal });
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et.addEventListener('test', handler, { signal: controller.signal });
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et.dispatchEvent(new Event('test'));
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assert_equals(count, 0, "The listener was still removed");
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}, "Aborting from a listener does not call future listeners");
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test(function() {
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let count = 0;
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function handler() {
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count++;
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}
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const et = new EventTarget();
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const controller = new AbortController();
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et.addEventListener('test', () => {
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et.addEventListener('test', handler, { signal: controller.signal });
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controller.abort();
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}, { signal: controller.signal });
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et.dispatchEvent(new Event('test'));
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assert_equals(count, 0, "The listener was still removed");
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}, "Adding then aborting a listener in another listener does not call it");
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test(function() {
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const et = new EventTarget();
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const ac = new AbortController();
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let count = 0;
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et.addEventListener('foo', () => {
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et.addEventListener('foo', () => {
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count++;
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if (count > 5) ac.abort();
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et.dispatchEvent(new Event('foo'));
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}, { signal: ac.signal });
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et.dispatchEvent(new Event('foo'));
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}, { once: true });
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et.dispatchEvent(new Event('foo'));
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}, "Aborting from a nested listener should remove it");
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test(function() {
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const et = new EventTarget();
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assert_throws_js(TypeError, () => { et.addEventListener("foo", () => {}, { signal: null }); });
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}, "Passing null as the signal should throw");
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test(function() {
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const et = new EventTarget();
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assert_throws_js(TypeError, () => { et.addEventListener("foo", null, { signal: null }); });
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}, "Passing null as the signal should throw (listener is also null)");

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