Issue 6391 - Allow running the browser unit tests with Firefox

test/runners/webdriver.js

Index: test/runners/webdriver.js
===================================================================
new file mode 100644
--- /dev/null
+++ b/test/runners/webdriver.js
@@ -0,0 +1,44 @@
+/*
+ * 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
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+"use strict";
+
+function executeScript(driver, name, script, scriptName, scriptArgs)
+{
+  let realScript = `let f = ${script}
+                    let callback = arguments[arguments.length - 1];
+                    return Promise.resolve()
+                      .then(() => f(...arguments))
+                      .then(() => callback());`;
+  return driver.executeScript(`window.consoleLogs = [];
+                               let oldLog = console.log;
+                               console.log = msg => {
+                                 window.consoleLogs.push(msg);
+                                 oldLog.call(this, msg);
+                               };`)
+    .then(() => driver.executeAsyncScript(realScript, scriptArgs))
+    .then(() => driver.executeScript("return window.consoleLogs;"))
+    .then(result =>
+    {
+      console.log(`\nTests in ${name}\n`);
+      result.forEach(item => console.log(item));
+    })
+    .then(() => driver.quit())
+  ;
+}
+
+module.exports.executeScript = executeScript;