third_party/WebKit/LayoutTests/http/tests/xmlhttprequest/range-test.html

   1 <html>
   2 <body>
   3 <p>Test Range support in XMLHttpRequest</p>
   4 <script>
   5     if (window.testRunner) {
   6         testRunner.dumpAsText();
   7         testRunner.waitUntilDone();
   8     }
   9
  10     var console_messages = document.createElement("ul");
  11     document.body.appendChild(console_messages);
  12
  13     function log(message)
  14     {
  15         var item = document.createElement("li");
  16         item.appendChild(document.createTextNode(message));
  17         console_messages.appendChild(item);
  18     }
  19
  20     function getRange(url, start, end, useUniqueUrls, fullResponse, done_callback) {
  21         log("getRange(" + url + ", " + start + ", " + end + ", " + useUniqueUrls + ")");
  22         var req = new XMLHttpRequest;
  23
  24         if (useUniqueUrls)
  25           url = url + "?q=" + start + "-" + end;
  26
  27         req.open("GET", url, true);
  28         req.setRequestHeader("Range", "bytes=" + start + "-" + (end - 1));
  29         req.responseType = 'arraybuffer';
  30         req.onreadystatechange = function() {
  31             if (req.readyState == 4) {
  32                 if (req.status != 206)
  33                     log("Expected a 206 response, got " + req.status);
  34
  35                 var expected = fullResponse.subarray(start, end);
  36                 var actual = new Uint8Array(req.response);
  37                 log("Length : expected " + expected.length + " got " + actual.length);
  38
  39                 if (expected.length == actual.length) {
  40                     // Verify that all the data is what we expect.
  41                     for (var i = 0; i < expected.length; ++i) {
  42                         if (actual[i] != expected[i]) {
  43                             log("actual[" + i + "] != expected[" + i + "] (" + actual[i] + " != " + expected[i] + ")");
  44                         }
  45                     }
  46                 }
  47                 done_callback();
  48             }
  49         };
  50         req.send(null);
  51     }
  52
  53     function runRangeTest(useUniqueUrls, done_callback) {
  54         // First fetch full resource.
  55         var url = "resources/reply.xml";
  56         var req = new XMLHttpRequest;
  57         req.open("GET", url, true);
  58         req.responseType = 'arraybuffer';
  59         req.onreadystatechange = function() {
  60               if (req.readyState == 4) {
  61                   var fullResponse = new Uint8Array(req.response);
  62                   var startOffset = fullResponse.length / 2;
  63                   var endOffset = startOffset + 2;
  64
  65                   // Next fetch a subrange in the middle of the resource.
  66                   getRange(url, startOffset, endOffset, useUniqueUrls, fullResponse, function() {
  67
  68                       // Fetch a different range near the middle of the resource.
  69                       getRange(url, startOffset + 1, endOffset + 2, useUniqueUrls, fullResponse, function() {
  70                           done_callback();
  71                       });
  72                   });
  73               }
  74           };
  75         req.send(null);
  76     }
  77
  78     // First test range requests using the exact same URL.
  79     runRangeTest(false, function() {
  80         // Next test w/ a query parameter appended so that each XHR
  81         // has a unique URL.
  82         runRangeTest(true, function() {
  83             if (window.testRunner)
  84                 testRunner.notifyDone();
  85
  86         });
  87     });
  88
  89 </script>
  90 </body>
  91 </html>