test_print_stderr.js

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

add_task(async function() {

  Assert.throws(

    () => Cu.printStderr(),

    /Not enough arguments/,

    "Without argument printStderr throws"

);

  const types = ["", "foo", 42, true, null, {foo: "bar"}];

  types.forEach(type => Cu.printStderr(type));

});