test_formatMessages.html

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<head>

  <meta charset="utf-8">

  <title>Test Localization.prototype.formatMessages API</title>

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

  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css">

  <script type="application/javascript">

  "use strict";

  const mockSource = L10nFileSource.createMock("test", "app", ["en-US"], "/localization/{locale}/", [

      path: "/localization/en-US/mock.ftl",

      source: `

key1 = Value

  .title = Title 1

  .accesskey = K

key2 =

  .label = This is a label for { $user }

]);

  let registry = new L10nRegistry({

    bundleOptions: {

      useIsolating: false

});

  registry.registerSources([mockSource]);

  function getAttributeByName(attributes, name) {

    return attributes.find(attr => attr.name === name);

  (async () => {

    SimpleTest.waitForExplicitFinish();

    const loc = new Localization(

      ['mock.ftl'],

      false,

      registry,

);

      // Simple mix works.

      let msgs = await loc.formatMessages([

        {id: "key1"},

        {id: "key2", args: { user: "Amy"}},

]);

        is(msgs[0].value, "Value");

        let attr0 = getAttributeByName(msgs[0].attributes, "title");

        is(attr0.name, "title");

        is(attr0.value, "Title 1");

        let attr1 = getAttributeByName(msgs[0].attributes, "accesskey");

        is(attr1.name, "accesskey");

        is(attr1.value, "K");

        is(msgs[1].value, null);

        let attr0 = getAttributeByName(msgs[1].attributes, "label");

        is(attr0.name, "label");

        is(attr0.value, "This is a label for Amy");

      // Missing arguments cause exception in automation.

      try {

        let msgs = await loc.formatMessages([

          {id: "key1"},

          {id: "key2"},

]);

        ok(false, "Missing argument didn't cause an exception.");

      } catch (e) {

        is(e.message,

          "[fluent][resolver] errors in en-US/key2: Resolver error: Unknown variable: $user",

          "Missing key causes an exception.");

      // Missing keys cause exception in automation.

      try {

        let msgs = await loc.formatMessages([

          { id: "key1" },

          { id: "key4" },

]);

        ok(false, "Missing key didn't cause an exception.");

      } catch (e) {

        is(e.message,

           "[fluent] Missing message in locale en-US: key4",

           "Missing key causes an exception.");

    SimpleTest.finish();

  })();

  </script>

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