| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <script src="../../resources/js-test-pre.js"></script> |
| </head> |
| <body> |
| <script> |
| |
| description("Test that promises and mutation observers are both delivered from the same microtask queue."); |
| var jsTestIsAsync = true; |
| |
| var actualResult = []; |
| var expectedResult = []; |
| var currentTest = 0; |
| |
| new MutationObserver(function() { |
| actualResult.push('mutate'); |
| checkIfDone(); |
| }).observe(document.body, { attributes: true }); |
| function mutate() |
| { |
| document.body.setAttribute('data-random', Math.random()); |
| } |
| function promise() |
| { |
| Promise.resolve().then(function() { |
| actualResult.push('promise'); |
| checkIfDone(); |
| }); |
| } |
| function timeout() |
| { |
| setTimeout(function() { |
| actualResult.push('timeout'); |
| checkIfDone(); |
| }, 0); |
| } |
| |
| function checkIfDone() |
| { |
| if (actualResult.length != expectedResult.length) |
| return; |
| |
| debug("Expected result: " + expectedResult); |
| debug("Actual result: " + actualResult); |
| shouldBe("actualResult", "expectedResult"); |
| debug(""); |
| |
| ++currentTest |
| runNextTest(); |
| } |
| |
| var tests = [ |
| [[timeout, promise, mutate], ["promise", "mutate", "timeout"]], |
| [[timeout, mutate, promise], ["mutate", "promise", "timeout"]] |
| ]; |
| |
| function runNextTest() |
| { |
| if (currentTest >= tests.length) { |
| finishJSTest(); |
| return; |
| } |
| |
| actualResult = []; |
| tasks = tests[currentTest][0]; |
| expectedResult = tests[currentTest][1]; |
| |
| for (task of tasks) { |
| task(); |
| } |
| } |
| |
| runNextTest() |
| |
| </script> |
| <script src="../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
