dom/downloads/tests/test_downloads_pause_resume.html

   1 <!DOCTYPE html>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=938023
   5 -->
   6 <head>
   7   <title>Test for Bug 938023 Downloads API</title>
   8   <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
   9   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  10   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
  11 </head>
  12 <body>
  13
  14 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=938023">Mozilla Bug 938023</a>
  15 <p id="display"></p>
  16 <div id="content" style="display: none">
  17 </div>
  18 <a href="serve_file.sjs?contentType=application/octet-stream&size=102400&rate=10240" download="test.bin" id="download1">Large Download</a>
  19 <pre id="test">
  20 <script class="testbody" type="text/javascript;version=1.7">
  21
  22 // Testing pausing a download and then resuming it.
  23
  24 SimpleTest.waitForExplicitFinish();
  25
  26 var index = -1;
  27
  28 function next(args) {
  29   index += 1;
  30   if (index >= steps.length) {
  31     ok(false, "Shouldn't get here!");
  32     return;
  33   }
  34   try {
  35     steps[index](args);
  36   } catch(ex) {
  37     ok(false, "Caught exception", ex);
  38   }
  39 }
  40
  41 var pausing = false;
  42 var resuming = false;
  43
  44 // Catch all error function.
  45 function error() {
  46   ok(false, "API failure");
  47   SimpleTest.finish();
  48 }
  49
  50 function checkDownloadList(downloads) {
  51   ok(downloads.length == 0, "No downloads left");
  52   SimpleTest.finish();
  53 }
  54
  55 function checkResumeSucceeded(download) {
  56   ok(download.state == "succeeded", "Download resumed successfully.");
  57   navigator.mozDownloadManager.clearAllDone()
  58              .then(checkDownloadList, error);
  59 }
  60
  61 function downloadChange(evt) {
  62   var download = evt.download;
  63
  64   if (download.state == "downloading" && !pausing) {
  65     pausing = true;
  66     download.pause();
  67   } else if (download.state == "stopped" && !resuming) {
  68     resuming = true;
  69     ok(pausing, "Download stopped by pause()");
  70     download.resume()
  71             .then(function() { checkResumeSucceeded(download); }, error);
  72   }
  73 }
  74
  75 var steps = [
  76   // Start by setting the pref to true.
  77   function() {
  78     SpecialPowers.pushPrefEnv({
  79       set: [["dom.mozDownloads.enabled", true]]
  80     }, next);
  81   },
  82
  83   // Setup permission and clear current list.
  84   function() {
  85     SpecialPowers.pushPermissions([
  86       {type: "downloads", allow: true, context: document}
  87     ], function() {
  88       navigator.mozDownloadManager.clearAllDone().then(next, error);
  89     });
  90   },
  91
  92   function(downloads) {
  93     ok(downloads.length == 0, "Start with an empty download list.");
  94     next();
  95   },
  96
  97   // Setup the event listeners.
  98   function() {
  99     navigator.mozDownloadManager.ondownloadstart =
 100       function(evt) {
 101         ok(true, "Download started");
 102         evt.download.addEventListener("statechange", downloadChange);
 103       }
 104     next();
 105   },
 106
 107   // Click on the <a download> to start the download.
 108   function() {
 109     document.getElementById("download1").click();
 110   }
 111 ];
 112
 113 next();
 114
 115 </script>
 116 </pre>
 117 </body>
 118 </html>