Merge pull request web-platform-tests#967 from w3c/hallvors/sync-bloc…

…ks-async New test: sync request blocks async
aliams · Aug 18, 2014 · 752685a · 752685a
2 parents e898c25 + 3382690
commit 752685a
Showing 1 changed file with 66 additions and 0 deletions.
diff --git a/XMLHttpRequest/send-sync-blocks-async.htm b/XMLHttpRequest/send-sync-blocks-async.htm
@@ -0,0 +1,66 @@
+<!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="http://dvcs.w3.org/hg/xhr/raw-file/tip/Overview.html#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>