third_party/WebKit/LayoutTests/fast/files/resources/blob-slice-common.js

   1 var blob, file; // Populated by runTests() in individual tests.
   2 var sliceParams = []; // Populated by individual tests.
   3 var testIndex = 0;
   4
   5 function testSlicing(start, end, expectedResult, blob, doneCallback)
   6 {
   7     var blobClass = blob.constructor.name;
   8     var sliced;
   9     var reader = new FileReader();
  10     var message = ".slice";
  11     if (start === null && end === null) {
  12         message += "()";
  13         sliced = blob.slice();
  14     } else if (end == undefined) {
  15         message += "(" + start + ")";
  16         sliced = blob.slice(start);
  17     } else {
  18         message += "(" + start + ", " + end + ")";
  19         sliced = blob.slice(start, end);
  20     }
  21     reader.onloadend = function(event) {
  22         var error = event.target.error;
  23         if (error) {
  24             testFailed("File read error " + message + error);
  25             doneCallback();
  26             return;
  27         }
  28         var blobContentsVar = blobClass.toLowerCase() + "Contents";
  29         window[blobContentsVar] = event.target.result;
  30         shouldBeEqualToString(blobContentsVar, expectedResult);
  31         doneCallback();
  32     };
  33     debug(blobClass + " " + message);
  34     reader.readAsText(sliced);
  35 }
  36
  37 function runNextTest()
  38 {
  39     if (testIndex >= sliceTestCases.length) {
  40         finishJSTest();
  41         return;
  42     }
  43
  44     var testCase = sliceTestCases[testIndex];
  45     testIndex++;
  46     testSlicing(testCase[0], testCase[1], testCase[2], blob, function() {
  47         testSlicing(testCase[0], testCase[1], testCase[2], file, runNextTest);
  48     });
  49 }