Issue 6391 - Allow running the browser unit tests with Firefox

test/runners/firefox_process.js

Index: test/runners/firefox_process.js
===================================================================
new file mode 100644
--- /dev/null
+++ b/test/runners/firefox_process.js
@@ -0,0 +1,66 @@
+/*
+ * 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/>.
+ */
+
+/* eslint-env node */
+/* eslint no-console: "off" */
+
+"use strict";
+
+const {Builder} = require("selenium-webdriver");
+const firefox = require("selenium-webdriver/firefox");
+require("geckodriver");
+
+function runScript(script, scriptName, scriptArgs)
+{
+  let binary = new firefox.Binary(firefox.Channel.NIGHTLY);
+  binary.addArguments("-headless");
+
+  const options = new firefox.Options()
+        .setBinary(binary);
+
+  const driver = new Builder()
+        .forBrowser("firefox")
+        .setFirefoxOptions(options)
+        .build();
+
+  let realScript = `let f = ${script} return f(...arguments);`;
+  return driver.executeScript(`window.consoleLogs = [];
+  let oldLog = console.log;
+  console.log = msg => {
+    window.consoleLogs.push(msg);
+    oldLog.call(this, msg);
+  };`)
+    .then(result => driver.executeScript(realScript, scriptArgs))
+    .then(result => driver.executeScript("return window.consoleLogs;"))
+    .then(result =>
+    {
+      console.log("\nTests in Firefox\n");
+      result.forEach(item => console.log(item));
+    })
+    .then(() => driver.quit());
+}
+
+module.exports = function(script, scriptName, ...scriptArgs)
+{
+  return runScript(script, scriptName, scriptArgs).then(result =>
+  {
+    return result;
+  }).catch(error =>
+  {
+    throw error;
+  });
+};