test_parse_importMap_failed.html

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<!DOCTYPE html>

<head>

  <meta charset=utf-8>

  <title>Test the error message when parsing import maps failed</title>

</head>

<body onload='testLoaded()'>

<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

<script>

// eslint-disable-next-line no-unused-vars

let gotMsg = false;

window.onerror = function(event, src, lineno, colno, error) {

  info("error: " + error.message);

  ok(error instanceof SyntaxError, "error should be SyntaxError.");

  ok(error.message.match(/import map/),

     "error.message should contain 'import map'");

  gotMsg = true;

};

</script>

<!--

An import map with invalid JSON format. A SyntaxError will be thrown when parsing

the import map.

-->

<script type="importmap" onerror='importMapError()'>

  "imports": {{

    "foo": "./foo.js"

</script>

<script>

  SimpleTest.waitForExplicitFinish();

  /* global gotMsg */

  // eslint-disable-next-line no-unused-vars

  function testLoaded() {

    ok(gotMsg, "Should have thrown a SyntaxError.");

    SimpleTest.finish();

</script>

</body>