dom/webgpu/mochitest/test_navigator_gpu_not_replaceable.html

   1 <!doctype html>
   2 <html>
   3   <head>
   4     <meta charset="utf-8" />
   5     <script src="/tests/SimpleTest/SimpleTest.js"></script>
   6     <link rel="stylesheet" href="/tests/SimpleTest/test.css" />
   7   </head>
   8   <body>
   9     <script>
  10       ok(
  11         SpecialPowers.getBoolPref("dom.webgpu.enabled"),
  12         "Pref should be enabled."
  13       );
  14       const originalNavigatorGpu = navigator.gpu;
  15
  16       const BAD_GPU_VAL = "ohcrapthisisbad";
  17       ok(
  18         navigator.gpu !== BAD_GPU_VAL,
  19         "`navigator.gpu` should never equal `BAD_GPU_VAL` (before replacement attempt)"
  20       );
  21       navigator.gpu = BAD_GPU_VAL;
  22       ok(
  23         navigator.gpu !== BAD_GPU_VAL,
  24         "`navigator.gpu` should never equal `BAD_GPU_VAL` (after replacement attempt)"
  25       );
  26       ok(
  27         navigator.gpu === originalNavigatorGpu,
  28         "`navigator.gpu` should equal originally observed value after attempted replacement"
  29       );
  30     </script>
  31   </body>
  32 </html>