test_backgroundtask_no_output.js

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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-

 * vim: sw=4 ts=4 sts=4 et

 * 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/. */

// Run a background task which itself waits for a launched background task,

// which itself waits for a launched background task, etc.  Verify no output is

// produced.

add_task(async function test_backgroundtask_no_output() {

  let sentinel = Services.uuid.generateUUID().toString();

  sentinel = sentinel.substring(1, sentinel.length - 1);

  let count = 2;

  let outputLines = [];

  let exitCode = await do_backgroundtask("no_output", {

    extraArgs: [sentinel, count.toString()],

    // This is a misnomer: stdout is redirected to stderr, so this is _any_

    // output line.

    onStdoutLine: line => outputLines.push(line),

});

  Assert.equal(0, exitCode);

  if (AppConstants.platform !== "win") {

    // Check specific logs because there can still be some logs in certain conditions,

    // e.g. in code coverage (see bug 1831778 and bug 1804833)

ok(

      outputLines.every(l => !l.includes("*** You are running in")),

      "Should not have logs by default"

);

});

// Run a background task which itself waits for a launched background task,

// which itself waits for a launched background task, etc.  Since we ignore the

// no output restriction, verify that output is produced.

add_task(async function test_backgroundtask_ignore_no_output() {

  let sentinel = Services.uuid.generateUUID().toString();

  sentinel = sentinel.substring(1, sentinel.length - 1);

  let count = 2;

  let outputLines = [];

  let exitCode = await do_backgroundtask("no_output", {

    extraArgs: [sentinel, count.toString()],

    extraEnv: { MOZ_BACKGROUNDTASKS_IGNORE_NO_OUTPUT: "1" },

    // This is a misnomer: stdout is redirected to stderr, so this is _any_

    // output line.

    onStdoutLine: line => {

      if (line.includes(sentinel)) {

        outputLines.push(line);

},

});

  Assert.equal(0, exitCode);

  Assert.equal(count, outputLines.length);

});