| <!DOCTYPE html> |
| <html> |
| <head> |
| <!-- This behaviour is not explicitly spelled out in the spec. |
| It does say "queue tasks" under the "if the synchronous flag is unset" header in point 10 of the "send" algorithm.. --> |
| <link rel="help" href="https://xhr.spec.whatwg.org/#the-send()-method" data-tested-assertations="following-sibling::ol/li[10]/dl/dd/dl/dd[2]/p[3]" /> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <title>XMLHttpRequest: sync requests should block events on pending async requests</title> |
| </head> |
| |
| <body> |
| <div id="log"></div> |
| |
| <script type="text/javascript"> |
| var test = async_test(); |
| |
| var expect = ['sync 4', 'async 2', 'async 3', 'async 4'] |
| var actual = [] |
| |
| test.step(function() |
| { |
| var xhr_async = new XMLHttpRequest() |
| xhr_async.open('GET', 'resources/delay.py?ms=1000', true) // first launch an async request, completes in 1 second |
| xhr_async.onreadystatechange = function() |
| { |
| test.step(function() |
| { |
| actual.push('async ' + xhr_async.readyState) |
| if(xhr_async.readyState === 4 && actual.indexOf('sync 4')>-1){ |
| VerifyResult() |
| } |
| |
| }); |
| }; |
| xhr_async.send() |
| |
| setTimeout(function(){ |
| var xhr_sync = new XMLHttpRequest(); |
| xhr_sync.open('GET', 'resources/delay.py?ms=2000', false) // here's a sync request that will take 2 seconds to finish |
| xhr_sync.onreadystatechange = function() |
| { |
| test.step(function() |
| { |
| actual.push('sync ' + xhr_sync.readyState) |
| if(xhr_sync.readyState === 4 && actual.indexOf('async 4')>-1){ |
| VerifyResult() |
| } |
| }); |
| }; |
| xhr_sync.send() |
| |
| }, 10); |
| |
| function VerifyResult() |
| { |
| test.step(function() |
| { |
| assert_array_equals(actual, expect); |
| test.done(); |
| }); |
| }; |
| }); |
| </script> |
| </body> |
| </html> |
