| <!doctype html> |
| <meta name="variant" content=""> |
| <meta name="variant" content="?keep-promise"> |
| <title>testharness.js - task scheduling</title> |
| <script src="../../variants.js"></script> |
| <script src="../../../testharness.js"></script> |
| <script src="../../../testharnessreport.js"></script> |
| <script> |
| var sameMicrotask = null; |
| var expectedError = new Error('This error is expected'); |
| |
| // Derived from `immediate` |
| // https://github.com/calvinmetcalf/immediate/blob/c353bd2106648cee1d525bfda22cfc4456e69c0e/lib/mutation.js |
| function microTask(callback) { |
| var observer = new MutationObserver(callback); |
| var element = document.createTextNode(''); |
| observer.observe(element, { |
| characterData: true |
| }); |
| |
| element.data = true; |
| }; |
| |
| async_test(function(t) { |
| var microtask_ran = false; |
| |
| t.step_timeout(t.step_func(function() { |
| assert_true(microtask_ran, 'function registered as a microtask was executed before task'); |
| t.done(); |
| }), 0); |
| |
| microTask(function() { |
| microtask_ran = true; |
| }); |
| }, 'precondition: microtask creation logic functions as expected'); |
| |
| test(function() { |
| sameMicrotask = true; |
| microTask(function() { sameMicrotask = false; }); |
| }, 'synchronous test without cleanup'); |
| |
| test(function() { |
| assert_true(sameMicrotask); |
| }, 'sub-test with 0 cleanup functions executes in the same microtask as a passing sub-test'); |
| |
| test(function() { |
| sameMicrotask = true; |
| microTask(function() { sameMicrotask = false; }); |
| throw expectedError; |
| }, 'failing synchronous test without cleanup'); |
| |
| test(function() { |
| assert_true(sameMicrotask); |
| }, 'sub-test with 0 cleanup functions executes in the same microtask as a failing sub-test'); |
| |
| test(function(t) { |
| t.add_cleanup(function() {}); |
| |
| sameMicrotask = true; |
| microTask(function() { sameMicrotask = false; }); |
| }, 'synchronous test with cleanup'); |
| |
| test(function() { |
| assert_true(sameMicrotask); |
| }, 'sub-test with some cleanup functions executes in the same microtask as a passing sub-test'); |
| |
| test(function(t) { |
| t.add_cleanup(function() {}); |
| |
| sameMicrotask = true; |
| microTask(function() { sameMicrotask = false; }); |
| throw expectedError; |
| }, 'failing synchronous test with cleanup'); |
| |
| test(function() { |
| assert_true(sameMicrotask); |
| }, 'sub-test with some cleanup functions executes in the same microtask as a failing sub-test'); |
| </script> |
| |
| <script type="text/json" id="expected"> |
| { |
| "summarized_status": { |
| "message": null, |
| "status_string": "OK" |
| }, |
| "summarized_tests": [ |
| { |
| "message": "This error is expected", |
| "name": "failing synchronous test with cleanup", |
| "properties": {}, |
| "status_string": "FAIL" |
| }, |
| { |
| "message": "This error is expected", |
| "name": "failing synchronous test without cleanup", |
| "properties": {}, |
| "status_string": "FAIL" |
| }, |
| { |
| "message": null, |
| "name": "precondition: microtask creation logic functions as expected", |
| "properties": {}, |
| "status_string": "PASS" |
| }, |
| { |
| "message": null, |
| "name": "sub-test with 0 cleanup functions executes in the same microtask as a failing sub-test", |
| "properties": {}, |
| "status_string": "PASS" |
| }, |
| { |
| "message": null, |
| "name": "sub-test with 0 cleanup functions executes in the same microtask as a passing sub-test", |
| "properties": {}, |
| "status_string": "PASS" |
| }, |
| { |
| "message": null, |
| "name": "sub-test with some cleanup functions executes in the same microtask as a failing sub-test", |
| "properties": {}, |
| "status_string": "PASS" |
| }, |
| { |
| "message": null, |
| "name": "sub-test with some cleanup functions executes in the same microtask as a passing sub-test", |
| "properties": {}, |
| "status_string": "PASS" |
| }, |
| { |
| "message": null, |
| "name": "synchronous test with cleanup", |
| "properties": {}, |
| "status_string": "PASS" |
| }, |
| { |
| "message": null, |
| "name": "synchronous test without cleanup", |
| "properties": {}, |
| "status_string": "PASS" |
| } |
| ], |
| "type": "complete" |
| } |
| </script> |
