test_compilation_message_pos.html

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<html>

  <head>

    <meta charset="utf-8" />

    <script src="/tests/SimpleTest/SimpleTest.js"></script>

    <link rel="stylesheet" href="/tests/SimpleTest/test.css" />

  </head>

  <body>

    <script>

ok(

        SpecialPowers.getBoolPref("dom.webgpu.enabled"),

        "Pref should be enabled."

);

      async function testBody() {

        const adapter = await navigator.gpu.requestAdapter();

        const device = await adapter.requestDevice();

        device.pushErrorScope("validation");

        const shaderModule = device.createShaderModule({

          // `?` is invalid, and we want to see if the offset will be right with the kitten emoji

          // before it.

          code: "/*🐈🐈🐈🐈🐈🐈🐈*/?",

});

        const error = await device.popErrorScope();

        ok(error, "expected error from invalid shader");

        is(error.message, "Shader module creation failed: Parsing error");

        const compilationInfo = await shaderModule.getCompilationInfo();

        is(compilationInfo.messages.length, 1);

        const { length, lineNum, linePos, message, offset } =

          compilationInfo.messages[0];

        is(length, 1);

        is(lineNum, 1);

        is(linePos, 19);

is(

          message,

Shader '' parsing error: expected global item ('struct', 'const', 'var', 'alias', ';', 'fn') or the end of the file, found '?'

  ┌─ wgsl:1:12

│

1 │ /*🐈🐈🐈🐈🐈🐈🐈*/?

  │                   ^ expected global item ('struct', 'const', 'var', 'alias', ';', 'fn') or the end of the file

);

        is(offset, 18);

      SimpleTest.waitForExplicitFinish();

      testBody()

        .catch(e => ok(false, "Unhandled exception " + e))

        .finally(() => SimpleTest.finish());

    </script>

  </body>

</html>