Issue 6987 - Fix regression preventing running individual tests

test_runner.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 101 matching lines @@
         memoryFS.unlinkSync("/" + bundleFilename);
         resolve(bundle);
       }
     });
   });
 }
 
 function runBrowserTests(processes)
 {
   if (!browserFiles.length)
-    return;
+    return Promise.resolve();

[Manish Jethani, 2018/09/26 10:36:49]

LGTM, for next bookmark.

 
   let nodeunitPath = path.join(__dirname, "node_modules", "nodeunit",
                                "examples", "browser", "nodeunit.js");
   let bundleFilename = "bundle.js";
 
   return webpackInMemory(bundleFilename, {
     entry: path.join(__dirname, "test", "browser", "_bootstrap.js"),
     module: {
       rules: [{
         resource: nodeunitPath,
@@ skipping 45 matching lines @@
 
 runBrowserTests(runnerProcesses).then(() =>
 {
   if (unitFiles.length)
     nodeunit.reporters.default.run(unitFiles);
 }).catch(error =>
 {
   console.error(error);
   process.exit(1);
 });