dom/webgpu/mochitest/test_compilation_message_pos.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
  15       async function testBody() {
  16         const adapter = await navigator.gpu.requestAdapter();
  17         const device = await adapter.requestDevice();
  18
  19         device.pushErrorScope("validation");
  20         const shaderModule = device.createShaderModule({
  21           // `?` is invalid, and we want to see if the offset will be right with the kitten emoji
  22           // before it.
  23           code: "/*🐈🐈🐈🐈🐈🐈🐈*/?",
  24         });
  25
  26         const error = await device.popErrorScope();
  27         ok(error, "expected error from invalid shader");
  28         is(error.message, "Shader module creation failed: Parsing error");
  29
  30         const compilationInfo = await shaderModule.getCompilationInfo();
  31         is(compilationInfo.messages.length, 1);
  32
  33         const { length, lineNum, linePos, message, offset } =
  34           compilationInfo.messages[0];
  35         is(length, 1);
  36         is(lineNum, 1);
  37         is(linePos, 19);
  38         is(
  39           message,
  40           `
  41 Shader '' parsing error: expected global item ('struct', 'const', 'var', 'alias', ';', 'fn') or the end of the file, found '?'
  42   ┌─ wgsl:1:12
  43   │
  44 1 │ /*🐈🐈🐈🐈🐈🐈🐈*/?
  45   │                   ^ expected global item ('struct', 'const', 'var', 'alias', ';', 'fn') or the end of the file
  46
  47 `
  48         );
  49         is(offset, 18);
  50       }
  51
  52       SimpleTest.waitForExplicitFinish();
  53       testBody()
  54         .catch(e => ok(false, "Unhandled exception " + e))
  55         .finally(() => SimpleTest.finish());
  56     </script>
  57   </body>
  58 </html>