Added e2e test for font files

package.json

@@ -45,8 +45,9 @@
     "http-auth": "^3.1.3",
     "jshint": "^2.9.4",
     "mocha": "^3.4.2",
-    "stylelint": "^8.0.0",
+    "mocha-each": "^1.1.0",
     "spectron": "3.6.x",
+    "stylelint": "^8.0.0",
     "stylelint-config-standard": "latest",
     "time-grunt": "latest"
   },

tests/e2e/fonts.js

@@ -0,0 +1,52 @@
+const helpers = require("./global-setup");
+const path = require("path");
+const request = require("request");
+
+const expect = require("chai").expect;
+
+const describe = global.describe;
+const it = global.it;
+const beforeEach = global.beforeEach;
+const afterEach = global.afterEach;
+const forEach = require("mocha-each");
+
+describe("All font files from roboto.css should be downloadable", function() {
+	helpers.setupTimeout(this);
+
+	var fontFiles = [];
+	// Statements below filters out all 'url' lines in the CSS file
+	var fileContent = require("fs").readFileSync(__dirname + "/../../fonts/roboto.css", "utf8");
+	var regex = /\burl\(['"]([^'"]+)['"]\)/g;
+	var match = regex.exec(fileContent);
+	while (match != null) {
+		// Push 1st match group onto fontFiles stack
+		fontFiles.push(match[1]);
+		// Find the next one
+		match = regex.exec(fileContent);
+	}
+
+	before(function() {
+		// Set config sample for use in test
+		process.env.MM_CONFIG_FILE = "tests/configs/without_modules.js";
+
+		return helpers
+			.startApplication({
+				args: ["js/electron.js"]
+			})
+			.then(function(startedApp) {
+				app = startedApp;
+			});
+	});
+
+	after(function() {
+		return helpers.stopApplication(app);
+	});
+
+	forEach(fontFiles).it("should return 200 HTTP code for file '%s'", (fontFile, done) => {
+		var fontUrl = "http://localhost:8080/fonts/" + fontFile;
+		request.get(fontUrl, function(err, res, body) {
+			expect(res.statusCode).to.equal(200);
+			done();
+		});
+	});
+});