| <!doctype html> |
| <html lang="en"> |
| <head> |
| <meta charset="utf-8"> |
| <title>XMLHttpRequest: progress events grow response body size</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <link rel="help" href="https://xhr.spec.whatwg.org/#the-send()-method" data-tested-assertations="following::a[contains(@href,'#make-progress-notifications')]/.. following::a[contains(@href,'#make-progress-notifications')]/../following:p[1]" /> |
| <link rel="help" href="https://xhr.spec.whatwg.org/#make-progress-notifications" data-tested-assertations=".." /> |
| <link rel="help" href="https://xhr.spec.whatwg.org/#handler-xhr-onprogress" data-tested-assertations="/../.." /> |
| <link rel="help" href="https://xhr.spec.whatwg.org/#event-xhr-progress" data-tested-assertations="/../.." /> |
| </head> |
| |
| <div id="log"></div> |
| |
| <script> |
| |
| function doTest(test, expectedLengthComputable, expectedTotal, url) { |
| var client = new XMLHttpRequest(); |
| var lastSize = 0; |
| |
| client.onprogress = test.step_func(function(e) { |
| assert_equals(e.total, expectedTotal); |
| assert_equals(e.lengthComputable, expectedLengthComputable); |
| |
| var currentSize = client.responseText.length; |
| |
| if (lastSize > 0 && currentSize > lastSize) { |
| // growth from a positive size to bigger! |
| test.done(); |
| } |
| |
| lastSize = currentSize; |
| }); |
| |
| client.onreadystatechange = test.step_func(function() { |
| if (client.readyState === 4) { |
| assert_unreached("onprogress not called multiple times, or response body did not grow."); |
| } |
| }); |
| |
| client.open("GET", url); |
| client.send(null); |
| return client; |
| } |
| |
| async_test(function () { doTest(this, false, 0, "resources/trickle.py?count=6&delay=150"); }, |
| document.title + ', unknown content-length'); |
| async_test(function () { doTest(this, true, 78, "resources/trickle.py?count=6&delay=150&specifylength=1"); }, |
| document.title + ', known content-length'); |
| </script> |
