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| 1 | +<!DOCTYPE html> |
| 2 | +<meta charset=utf-8> |
| 3 | +<title>Process Events for FileReader</title> |
| 4 | +<link rel=help href="http://www.w3.org/TR/FileAPI/#event-handler-attributes-section"> |
| 5 | +<link rel= author title=" Jinks Zhao" href=" mailto:[email protected]" > |
| 6 | +<script src="/resources/testharness.js"></script> |
| 7 | +<script src="/resources/testharnessreport.js"></script> |
| 8 | +Please choose one file through this input below.<br> |
| 9 | +<input type="file" id="filer"> |
| 10 | +<div id="log"></div> |
| 11 | +<script> |
| 12 | +var input, reader, progressEventCounter, progressEventTimeList, |
| 13 | + lastProgressEventTime; |
| 14 | +setup(function() { |
| 15 | + input = document.getElementById('filer'); |
| 16 | + reader = new FileReader(); |
| 17 | + progressEventCounter = 0; |
| 18 | + progressEventTimeList = []; |
| 19 | + lastProgressEventTime; |
| 20 | +}, { explicit_timeout: true }); |
| 21 | + |
| 22 | +var t = async_test("FileReader progress events.") |
| 23 | + |
| 24 | +reader.onprogress = t.step_func(function () { |
| 25 | + var newTime = new Date; |
| 26 | + var timeout = newTime - lastProgressEventTime; |
| 27 | + |
| 28 | + progressEventTimeList.push(timeout); |
| 29 | + lastProgressEventTime = newTime; |
| 30 | + progressEventCounter++; |
| 31 | + |
| 32 | + assert_less_than_equal(timeout, 50, "The progress event should be fired every 50ms."); |
| 33 | +}); |
| 34 | + |
| 35 | +reader.onload = t.step_func_done(function () { |
| 36 | + assert_greater_than_equal(progressEventCounter, 1, |
| 37 | + "When read completely, the progress event must be fired at least once.") |
| 38 | +}); |
| 39 | + |
| 40 | +input.onchange = t.step_func(function () { |
| 41 | + var files = input.files; |
| 42 | + |
| 43 | + assert_greater_than(files.length, 0); |
| 44 | + var file = files[0]; |
| 45 | + |
| 46 | + lastProgressEventTime = new Date; |
| 47 | + reader.readAsArrayBuffer(file); |
| 48 | +}); |
| 49 | +</script> |
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