unsupported-attribute.html

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This WPT test may be referenced by the following Test IDs:
- /html/semantics/scripting-1/the-script-element/import-attributes/unsupported-attribute.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Handling of unsupported attribute</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script>

  setup({allow_uncaught_exception: true});

  window.log = [];

  window.addEventListener("error", ev => log.push(ev.error));

  const test_load = async_test(

      "Test that invalid module attribute leads to SyntaxError on window.");

  window.addEventListener("load", test_load.step_func_done(ev => {

    assert_equals(log.length, 1);

    assert_equals(log[0].constructor, SyntaxError);

  }));

  function unreachable() { log.push("unexpected"); }

</script>

<script type="module" src="./unsupported-attribute.js" onerror="unreachable()"></script>