diff --git a/CHANGELOG.md b/CHANGELOG.md
index 241e2d4b..ad819d31 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,6 +36,7 @@ Special thanks to the following contributors: @B1gG, @codac, @ezeholz, @khassel,
 - Cleaned up error handling in newsfeed and calendar modules for real
 - Updated default WEATHER module such that a provider can optionally set a custom unit-of-measure for precipitation (`weatherObject.precipitationUnits`)
 - Update documentation.
+- Update jest tests: Reset changes on js/logger.js, mock logger.js in global_vars tests.
 
 ### Removed
 
diff --git a/js/logger.js b/js/logger.js
index b7c94a0e..93a5bb53 100644
--- a/js/logger.js
+++ b/js/logger.js
@@ -22,7 +22,7 @@
 		root.Log = factory(root.config);
 	}
 })(this, function (config) {
-	let logLevel = {
+	const logLevel = {
 		debug: Function.prototype.bind.call(console.debug, console),
 		log: Function.prototype.bind.call(console.log, console),
 		info: Function.prototype.bind.call(console.info, console),
@@ -32,14 +32,10 @@
 		groupCollapsed: Function.prototype.bind.call(console.groupCollapsed, console),
 		groupEnd: Function.prototype.bind.call(console.groupEnd, console),
 		time: Function.prototype.bind.call(console.time, console),
-		timeEnd: Function.prototype.bind.call(console.timeEnd, console)
+		timeEnd: Function.prototype.bind.call(console.timeEnd, console),
+		timeStamp: Function.prototype.bind.call(console.timeStamp, console)
 	};
 
-	// the timeStamp instruction fails when running the tests so it is not added in test environment
-	if (typeof process === "object" && process.env.NODE_ENV.trim() !== "test") {
-		logLevel = Object.assign(logLevel, { timeStamp: Function.prototype.bind.call(console.timeStamp, console) });
-	}
-
 	logLevel.setLogLevel = function (newLevel) {
 		if (newLevel) {
 			Object.keys(logLevel).forEach(function (key, index) {
diff --git a/package.json b/package.json
index 1f87c764..5a2a419c 100644
--- a/package.json
+++ b/package.json
@@ -100,14 +100,8 @@
 					"**/tests/unit/**/*.[jt]s?(x)"
 				],
 				"testPathIgnorePatterns": [
-					"<rootDir>/tests/unit/setup_unit.js"
-				],
-				"setupFiles": [
-					"<rootDir>/tests/unit/setup_unit.js"
-				],
-				"moduleNameMapper": {
-					"logger": "<rootDir>/js/logger.js"
-				}
+					"<rootDir>/tests/unit/mocks"
+				]
 			},
 			{
 				"displayName": "e2e",
diff --git a/tests/unit/global_vars/defaults_modules_spec.js b/tests/unit/global_vars/defaults_modules_spec.js
index 08899a2d..c0a7f0e4 100644
--- a/tests/unit/global_vars/defaults_modules_spec.js
+++ b/tests/unit/global_vars/defaults_modules_spec.js
@@ -22,7 +22,15 @@ beforeAll(function () {
 	sandbox.require = function (filename) {
 		// This modifies the global slightly,
 		// but supplies vm with essential code
-		return require(filename);
+		if (filename === "logger") {
+			return require("../mocks/logger.js");
+		} else {
+			try {
+				return require(filename);
+			} catch {
+				// ignore
+			}
+		}
 	};
 
 	vm.runInNewContext(code, sandbox, fileName);
diff --git a/tests/unit/global_vars/root_path_spec.js b/tests/unit/global_vars/root_path_spec.js
index 249066dc..591f3ddb 100644
--- a/tests/unit/global_vars/root_path_spec.js
+++ b/tests/unit/global_vars/root_path_spec.js
@@ -22,7 +22,15 @@ beforeAll(function () {
 	sandbox.require = function (filename) {
 		// This modifies the global slightly,
 		// but supplies vm with essential code
-		return require(filename);
+		if (filename === "logger") {
+			return require("../mocks/logger.js");
+		} else {
+			try {
+				return require(filename);
+			} catch {
+				// ignore
+			}
+		}
 	};
 
 	vm.runInNewContext(code, sandbox, fileName);
diff --git a/tests/unit/mocks/logger.js b/tests/unit/mocks/logger.js
new file mode 100644
index 00000000..56b5b123
--- /dev/null
+++ b/tests/unit/mocks/logger.js
@@ -0,0 +1,20 @@
+(function (root, factory) {
+	// Node, CommonJS-like
+	module.exports = factory(root.config);
+})(this, function (config) {
+	let logLevel = {
+		debug: function () {},
+		log: function () {},
+		info: function () {},
+		warn: function () {},
+		error: function () {},
+		group: function () {},
+		groupCollapsed: function () {},
+		groupEnd: function () {},
+		time: function () {},
+		timeEnd: function () {},
+		timeStamp: function () {}
+	};
+
+	return logLevel;
+});
diff --git a/tests/unit/setup_unit.js b/tests/unit/setup_unit.js
deleted file mode 100644
index b4b7574c..00000000
--- a/tests/unit/setup_unit.js
+++ /dev/null
@@ -1 +0,0 @@
-console.log = () => {};