| <!DOCTYPE html> |
| <head> |
| <link rel=author title="Aleks Totic" href="mailto:atotic@chromium.org"> |
| <link rel=help href="https://html.spec.whatwg.org/#clean-up-after-running-script"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="resources/common.js"></script> |
| </head> |
| <body style="height:2000px;"> |
| <script> |
| /* |
| promise 1, promise 2 execute immediately after script tag |
| promise 1 child executes immediately after promise 2. |
| |
| Relevant specs: |
| |
| https://html.spec.whatwg.org/#clean-up-after-running-script |
| If the JavaScript execution context stack is now empty, perform a microtask checkpoint. |
| |
| https://html.spec.whatwg.org/#perform-a-microtask-checkpoint |
| "perform a microtask checkpoint" runs in a loop until all microtasks have been delivered. |
| */ |
| |
| var test = async_test("Microtask immediately after script"); |
| |
| var events = []; |
| |
| Promise.resolve() |
| .then(function() { |
| events.push("promise 1"); |
| return Promise.resolve(); |
| }) |
| .then(function() { |
| test.step(function() { |
| events.push("promise 1 child"); |
| assert_array_equals(events, ["promise 1", "promise 2", "promise 1 child"]); |
| test.done(); |
| }); |
| }); |
| Promise.resolve() |
| .then(function() { |
| events.push("promise 2"); |
| }); |
| |
| // Set up events that must be executed after Promise. |
| window.setTimeout(function() { |
| events.push('timeout'); |
| }, 0); |
| window.addEventListener('scroll', function() { |
| events.push('scroll'); |
| }); |
| window.scrollBy(0,10); |
| |
| </script> |
| </body> |
