diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0a7bce67..a0e8e0c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - Add `.vscode/` folder to `.gitignore` to keep custom Visual Studio Code config out of git.
 - Add unit test the capitalizeFirstLetter function of newfeed module.
 - Add new unit tests for function `shorten` in calendar module.
+- Add unit test for js/class.js.
 - Add unit tests for function `roundValue` in currentweather module.
 - Add test e2e showWeek feature in spanish language.
 
diff --git a/js/class.js b/js/class.js
index f2fa5159..ec75f6f2 100644
--- a/js/class.js
+++ b/js/class.js
@@ -90,4 +90,9 @@ function cloneObject(obj) {
 }
 
 /*************** DO NOT EDIT THE LINE BELOW ***************/
-if (typeof module !== "undefined") { module.exports = Class; }
+if (typeof module !== "undefined") {
+	module.exports = Class;
+	module.exports._test = {
+		cloneObject: cloneObject
+	}
+}
diff --git a/tests/unit/functions/class_spec.js b/tests/unit/functions/class_spec.js
new file mode 100644
index 00000000..e2e6d521
--- /dev/null
+++ b/tests/unit/functions/class_spec.js
@@ -0,0 +1,51 @@
+var chai = require("chai");
+var expect = chai.expect;
+var jsClass = require("../../../js/class.js");
+
+describe("File js/class", function() {
+	describe("Test function cloneObject", function() {
+		var cloneObject = jsClass._test.cloneObject;
+
+		it("should be return equals object", function() {
+			var expected = {name: "Rodrigo", web: "https://rodrigoramirez.com", project: "MagicMirror"};
+			var obj = {};
+			obj = cloneObject(expected);
+			expect(expected).to.deep.equal(obj);
+		});
+
+		it("should be return equals int", function() {
+			var expected = 1;
+			var obj = {};
+			obj = cloneObject(expected);
+			expect(expected).to.equal(obj);
+		});
+
+		it("should be return equals string", function() {
+			var expected = "Perfect stranger";
+			var obj = {};
+			obj = cloneObject(expected);
+			expect(expected).to.equal(obj);
+		});
+
+		it("should be return equals undefined", function() {
+			var expected = undefined;
+			var obj = {};
+			obj = cloneObject(expected);
+			expect(undefined).to.equal(obj);
+		});
+
+		// CoverageME
+		/*
+		context("Test lockstring code", function() {
+			it("should be return equals object", function() {
+				var expected = {name: "Module", lockStrings: "stringLock"};
+				var obj = {};
+				obj = cloneObject(expected);
+				expect(expected).to.deep.equal(obj);
+			});
+		});
+		*/
+
+	});
+});
+