test_import_meta_resolve.html

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<!DOCTYPE html>

<head>

  <meta charset=utf-8>

  <title>Test import.meta.resolve</title>

</head>

<body onload='testLoaded()'>

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

<script>

  SimpleTest.waitForExplicitFinish();

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

  function assertThrowsTypeError(fn, msg) {

    let hasThrown = false;

    try {

      fn();

    } catch (error) {

      hasThrown = true;

      ok(error instanceof TypeError, "Thrown error should be TypeError.");

    ok(hasThrown, msg);

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

  function testLoaded() {

    SimpleTest.finish();

</script>

<script type="module">

  is(typeof import.meta.resolve, "function", "resolve should be a function.");

  is(import.meta.resolve.name, "resolve", "resolve.name should be 'resolve'.");

  is(import.meta.resolve.length, 1, "resolve.length should be 1.");

  is(Object.getPrototypeOf(import.meta.resolve), Function.prototype,

     "prototype of resolve should be Function.prototype.");

</script>

<script type="module">

  is(import.meta.resolve("http://example.com/"), "http://example.com/",

     "resolve specifiers with absolute path.");

</script>

<script type="module">

  is(import.meta.resolve("./x"), (new URL("./x", import.meta.url)).href,

     "resolve specifiers with relative path.");

</script>

<script type="module">

  /* global assertThrowsTypeError */

  assertThrowsTypeError(() => new import.meta.resolve("./x"),

                        "import.meta.resolve is not a constructor.");

</script>

<script type="module">

  /* global assertThrowsTypeError */

  // Fails to resolve the specifier should throw a TypeError.

  assertThrowsTypeError(() => import.meta.resolve("failed"),

                        "import.meta.resolve should throw if fails to resolve");

</script>

<script type="module">

  for (const name of Reflect.ownKeys(import.meta)) {

    const desc = Object.getOwnPropertyDescriptor(import.meta, name);

    is(desc.writable, true, name + ".writable should be true.");

    is(desc.enumerable, true, name + ".enumerable should be true.");

    is(desc.configurable, true, name + ".configurable should be true.");

</script>

</body>