Issue 6887 - add Chrome to "npm test"

test/browsers/chromium.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
+ * 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";
+
+// The Chromium version is a build number, quite obscure.
+// Chromium 63.0.3239.x is 508578
+// Chromium 65.0.3325.0 is 530368
+// We currently want Chromiun 63, as we still support it and that's the
+// loweset version that supports WebDriver.
+const CHROMIUM_REVISION = 508578;
+
+const path = require("path");
+const webdriver = require("selenium-webdriver");
+const chrome = require("selenium-webdriver/chrome");
+const {ensureChromium} = require("../../adblockpluscore/test/runners/" +
+                                "chromium_download");
+
+exports.platform = "chrome";
+
+exports.getDriver = function()
+{
+  return ensureChromium(CHROMIUM_REVISION).then(chromiumPath =>
+  {
+    let devenv = path.resolve("./devenv.chrome");

[Sebastian Noack, 2018/08/28 14:44:58]

I notice a pattern here. For both browsers we hard-code "./devenv.<platform>"
and then we resolve it. How about having the calling code pass in
"path.resolve(`./devenv/${module.platform}`)" (in order to DRY)?

[tlucas, 2018/08/29 09:16:54]

Done.

+
+    let options = new chrome.Options()
+      .setChromeBinaryPath(chromiumPath)
+      .addArguments("--no-sandbox")
+      .addArguments(`load-extension=${devenv}`);
+
+    return new webdriver.Builder()
+      .forBrowser("chrome")
+      .setChromeOptions(options)
+      .build();
+  });
+};