dom/bindings/test/test_large_arraybuffers.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=1688616
   5 -->
   6 <head>
   7   <meta charset="utf-8">
   8   <title>Test for large ArrayBuffers and views</title>
   9   <script src="/tests/SimpleTest/SimpleTest.js"></script>
  10   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  11 </head>
  12 <body>
  13 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1688616">Mozilla Bug 1688616</a>
  14 <p id="display"></p>
  15 <div id="content" style="display: none">
  16
  17 </div>
  18 <pre id="test">
  19 </pre>
  20   <script type="application/javascript">
  21     /* global TestFunctions */
  22
  23     SimpleTest.waitForExplicitFinish();
  24     SpecialPowers.pushPrefEnv({set: [["dom.expose_test_interfaces", true]]}, go);
  25
  26     function checkThrowsTooLarge(f) {
  27       let ex;
  28       try{
  29         f();
  30         ok(false, "Should have thrown!");
  31       } catch (e) {
  32         ex = e;
  33       }
  34       ok(ex.toString().includes("larger than 2 GB"), "Got exception: " + ex);
  35     }
  36
  37     function go() {
  38       let test = new TestFunctions();
  39
  40       const gb = 1 * 1024 * 1024 * 1024;
  41       let ab = new ArrayBuffer(5 * gb);
  42       checkThrowsTooLarge(() => test.testNotAllowShared(ab));
  43       checkThrowsTooLarge(() => test.testAllowShared(ab));
  44       checkThrowsTooLarge(() => test.testDictWithAllowShared({arrayBuffer: ab}));
  45       checkThrowsTooLarge(() => test.testUnionOfBuffferSource(ab));
  46       checkThrowsTooLarge(() => { test.arrayBuffer = ab; });
  47       checkThrowsTooLarge(() => { test.allowSharedArrayBuffer = ab; });
  48       checkThrowsTooLarge(() => { test.sequenceOfArrayBuffer = [ab]; });
  49       checkThrowsTooLarge(() => { test.sequenceOfAllowSharedArrayBuffer = [ab]; });
  50
  51       let ta = new Int8Array(ab, 0, 3 * gb);
  52       checkThrowsTooLarge(() => test.testNotAllowShared(ta));
  53       checkThrowsTooLarge(() => test.testAllowShared(ta));
  54       checkThrowsTooLarge(() => test.testDictWithAllowShared({arrayBufferView: ta}));
  55       checkThrowsTooLarge(() => test.testUnionOfBuffferSource(ta));
  56       checkThrowsTooLarge(() => { test.arrayBufferView = ta; });
  57       checkThrowsTooLarge(() => { test.allowSharedArrayBufferView = ta; });
  58       checkThrowsTooLarge(() => { test.sequenceOfArrayBufferView = [ta]; });
  59       checkThrowsTooLarge(() => { test.sequenceOfAllowSharedArrayBufferView = [ta]; });
  60
  61       let dv = new DataView(ab);
  62       checkThrowsTooLarge(() => test.testNotAllowShared(dv));
  63       checkThrowsTooLarge(() => test.testAllowShared(dv));
  64       checkThrowsTooLarge(() => test.testDictWithAllowShared({arrayBufferView: dv}));
  65       checkThrowsTooLarge(() => test.testUnionOfBuffferSource(dv));
  66       checkThrowsTooLarge(() => { test.arrayBufferView = dv; });
  67       checkThrowsTooLarge(() => { test.allowSharedArrayBufferView = dv; });
  68       checkThrowsTooLarge(() => { test.sequenceOfArrayBufferView = [dv]; });
  69       checkThrowsTooLarge(() => { test.sequenceOfAllowSharedArrayBufferView = [dv]; });
  70
  71       if (this.SharedArrayBuffer) {
  72         let sab = new SharedArrayBuffer(5 * gb);
  73         checkThrowsTooLarge(() => test.testAllowShared(sab));
  74         checkThrowsTooLarge(() => test.testDictWithAllowShared({allowSharedArrayBuffer: sab}));
  75         checkThrowsTooLarge(() => test.testUnionOfAllowSharedBuffferSource(sab));
  76         checkThrowsTooLarge(() => { test.allowSharedArrayBuffer = sab; });
  77         checkThrowsTooLarge(() => { test.sequenceOfAllowSharedArrayBuffer = [sab]; });
  78
  79         let sta = new Int8Array(sab);
  80         checkThrowsTooLarge(() => test.testAllowShared(sta));
  81         checkThrowsTooLarge(() => test.testDictWithAllowShared({allowSharedArrayBufferView: sta}));
  82         checkThrowsTooLarge(() => test.testUnionOfAllowSharedBuffferSource(sta));
  83         checkThrowsTooLarge(() => { test.allowSharedArrayBufferView = sta; });
  84         checkThrowsTooLarge(() => { test.sequenceOfAllowSharedArrayBufferView = [sta]; });
  85       }
  86
  87       // Small views on large buffers are fine.
  88       let ta2 = new Int8Array(ab, 4 * gb);
  89       is(ta2.byteLength, 1 * gb, "Small view on large ArrayBuffer");
  90       test.testNotAllowShared(ta2);
  91       test.arrayBufferView = ta2;
  92
  93       SimpleTest.finish();
  94     }
  95   </script>
  96 </body>
  97 </html>