Add test for displaying the header

tests/configs/modules/display.js

@@ -0,0 +1,42 @@
+/* Magic Mirror Test config for display setters module using the helloworld module
+ *
+ * MIT Licensed.
+ */
+var config = {
+	port: 8080,
+	ipWhitelist: ["127.0.0.1", "::ffff:127.0.0.1", "::1"],
+
+	language: "en",
+	timeFormat: 24,
+	units: "metric",
+	electronOptions: {
+		fullscreen: false,
+		width: 800,
+		height: 600,
+		webPreferences: {
+			nodeIntegration: true
+		}
+	},
+
+	modules: [
+		{
+			module: "helloworld",
+			position: "top_bar",
+			header: "test_header",
+			config: {
+				text: "Test Display Header"
+			}
+		},
+		{
+			module: "helloworld",
+			position: "bottom_bar",
+			config: {
+				text: "Test Hide Header"
+			}
+		}
+	]
+};
+/*************** DO NOT EDIT THE LINE BELOW ***************/
+if (typeof module !== "undefined") {
+	module.exports = config;
+}

tests/e2e/modules_display_spec.js

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+const helpers = require("./global-setup");
+
+const describe = global.describe;
+const it = global.it;
+
+describe("Display of modules", function () {
+	helpers.setupTimeout(this);
+
+	var app = null;
+
+	beforeEach(function () {
+		return helpers
+			.startApplication({
+				args: ["js/electron.js"]
+			})
+			.then(function (startedApp) {
+				app = startedApp;
+			});
+	});
+
+	afterEach(function () {
+		return helpers.stopApplication(app);
+	});
+
+	describe("Using helloworld", function () {
+		before(function () {
+			// Set config sample for use in test
+			process.env.MM_CONFIG_FILE = "tests/configs/modules/display.js";
+		});
+
+		it("should show the test header", async () => {
+			await app.client.waitForExist("#module_0_helloworld", 10000);
+			return app.client.element("#module_0_helloworld .module-header").isVisible().should.eventually.equal(true).getText("#module_0_helloworld .module-header").should.eventually.equal("TEST_HEADER");
+		});
+
+		it("should show no header if no header text is specified", async () => {
+			await app.client.waitForExist("#module_1_helloworld", 10000);
+			return app.client.element("#module_1_helloworld .module-header").isVisible().should.eventually.equal(false);
+		});
+	});
+});