| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>self.queueMicrotask works in Window</title> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| <iframe></iframe> |
| <script> |
| promise_test(() => { |
| var counter = 0; |
| self.queueMicrotask(() => { |
| assert_equals(counter++, 1); |
| self.queueMicrotask(() => { |
| assert_equals(counter++, 2); |
| }); |
| }); |
| var promise = new Promise((resolve, reject) => { |
| setTimeout(() => { |
| assert_equals(counter++, 3); |
| resolve(); |
| }, 0); |
| }); |
| assert_equals(counter++, 0); |
| return promise; |
| }, `Queued microtasks should be drained before executing macrotasks`); |
| |
| promise_test(() => { |
| return new Promise((resolve, reject) => { |
| self.queueMicrotask(function () { |
| try { |
| assert_equals(arguments.length, 0); |
| assert_equals(this, self); |
| assert_equals(frames.length, 1); |
| assert_not_equals(frames[0], self); |
| var iframe = frames[0]; |
| iframe.queueMicrotask(function () { |
| try { |
| assert_equals(this, self); |
| assert_not_equals(this, iframe); |
| self.queueMicrotask(function () { |
| 'use strict'; |
| try { |
| assert_equals(this, undefined); |
| resolve(); |
| } catch (e) { |
| reject(e); |
| } |
| }); |
| } catch (e) { |
| reject(e); |
| } |
| }); |
| } catch (e) { |
| reject(e); |
| } |
| }); |
| }); |
| }, `queueMicrotask's callback has zero arguments and self as |this|`); |
| |
| promise_test(() => { |
| return new Promise((resolve ,reject) => { |
| var counter = 0; |
| Promise.resolve().then(() => { |
| assert_equals(counter++, 1); |
| self.queueMicrotask(() => { |
| assert_equals(counter++, 3); |
| resolve(); |
| }); |
| }); |
| self.queueMicrotask(() => { |
| assert_equals(counter++, 2); |
| }); |
| assert_equals(counter++, 0); |
| }); |
| }, `queueMicrotask and Promise uses the same Microtask queue`); |
| |
| test(() => { |
| assert_throws_js(TypeError, () => { |
| self.queueMicrotask(); |
| }); |
| assert_throws_js(TypeError, () => { |
| self.queueMicrotask(null); |
| }); |
| assert_throws_js(TypeError, () => { |
| self.queueMicrotask(undefined); |
| }); |
| assert_throws_js(TypeError, () => { |
| self.queueMicrotask(42); |
| }); |
| assert_throws_js(TypeError, () => { |
| self.queueMicrotask("42"); |
| }); |
| assert_throws_js(TypeError, () => { |
| self.queueMicrotask(true); |
| }); |
| assert_throws_js(TypeError, () => { |
| self.queueMicrotask(Symbol("42")); |
| }); |
| assert_throws_js(TypeError, () => { |
| self.queueMicrotask({}); |
| }); |
| assert_throws_js(TypeError, () => { |
| self.queueMicrotask({ handleEvent() { } }); |
| }); |
| }, `queueMicrotask should reject non-function arguments`); |
| </script> |
| </body> |
| </html> |
