Show invalid url error on UI, add test case

tests/configs/modules/newsfeed/default.js

@@ -3,8 +3,7 @@
  * By Rodrigo Ramírez Norambuena https://rodrigoramirez.com
  * MIT Licensed.
  */
-
-var config = {
+let config = {
 	port: 8080,
 	ipWhitelist: ["127.0.0.1", "::ffff:127.0.0.1", "::1"],
 

tests/configs/modules/newsfeed/incorrect_url.js

@@ -0,0 +1,38 @@
+/* Magic Mirror Test config newsfeed module
+ *
+ * MIT Licensed.
+ */
+let config = {
+	port: 8080,
+	ipWhitelist: ["127.0.0.1", "::ffff:127.0.0.1", "::1"],
+
+	language: "en",
+	timeFormat: 12,
+	units: "metric",
+	electronOptions: {
+		webPreferences: {
+			nodeIntegration: true,
+			enableRemoteModule: true
+		}
+	},
+
+	modules: [
+		{
+			module: "newsfeed",
+			position: "bottom_bar",
+			config: {
+				feeds: [
+					{
+						title: "Incorrect Url",
+						url: "this is not a valid url"
+					}
+				]
+			}
+		}
+	]
+};
+
+/*************** DO NOT EDIT THE LINE BELOW ***************/
+if (typeof module !== "undefined") {
+	module.exports = config;
+}

tests/e2e/modules/newsfeed_spec.js

@@ -8,7 +8,7 @@ const afterEach = global.afterEach;
 describe("Newsfeed module", function () {
 	helpers.setupTimeout(this);
 
-	var app = null;
+	let app = null;
 
 	beforeEach(function () {
 		return helpers
@@ -29,8 +29,18 @@ describe("Newsfeed module", function () {
 			process.env.MM_CONFIG_FILE = "tests/configs/modules/newsfeed/default.js";
 		});
 
-		it("show title newsfeed", function () {
+		it("should show the newsfeed title", function () {
 			return app.client.waitUntilTextExists(".newsfeed .small", "Rodrigo Ramirez Blog", 10000).should.be.fulfilled;
 		});
 	});
+
+	describe("Invalid configuration", function () {
+		before(function () {
+			process.env.MM_CONFIG_FILE = "tests/configs/modules/newsfeed/incorrect_url.js";
+		});
+
+		it("should show invalid url warning", function () {
+			return app.client.waitUntilTextExists(".newsfeed .small", "Newsfeed Error. Incorrect url:", 10000).should.be.fulfilled;
+		});
+	});
 });