diff --git a/package.json b/package.json
index 3b7c142..c845db1 100644
--- a/package.json
+++ b/package.json
@@ -2,9 +2,9 @@
   "name": "food-journal",
   "version": "1.0.0",
   "scripts": {
-    "test": "jest"
+    "test": "mocha --recursive **/*.test.js"
   },
   "dependencies": {
-    "jest": "24"
+    "mocha": "10"
   }
 }
diff --git a/testenv/testenv.test.js b/testenv/testenv.test.js
index c670de0..afa68bc 100644
--- a/testenv/testenv.test.js
+++ b/testenv/testenv.test.js
@@ -1,4 +1,6 @@
 const {environment} = require("./testenv.js");
+var assert = require('assert');
+var window;
 
 function saveToLocal (k, v) {
 	window.localStorage.setItem(k, v);
@@ -17,24 +19,35 @@ function clearLocal () {
 } 
 
 describe("test localStorage mock", () => {
-	test("test save and fetch", () => {
-		let window = environment();
+	it("test save and fetch", () => {
+		window = environment();
+
 		saveToLocal("testkey1", "testvalue1");
 		saveToLocal("testkey2", "testvalue2");
 		saveToLocal("testkey3", "testvalue3");
 		saveToLocal("testkey4", "testvalue4");
 
-		expect(getFromLocal("testkey1")).toStrictEqual("testvalue1");
-		expect(getFromLocal("testkey2")).toStrictEqual("testvalue2");
-		expect(getFromLocal("testkey3")).toStrictEqual("testvalue3");
-		expect(getFromLocal("testkey4")).toStrictEqual("testvalue4");
+		assert.equal(getFromLocal("testkey1"), "testvalue1");
+		assert.equal(getFromLocal("testkey2"), "testvalue2");
+		assert.equal(getFromLocal("testkey3"), "testvalue3");
+		assert.equal(getFromLocal("testkey4"), "testvalue4");
 
 		saveToLocal("testkey6", "testvalue5");
-		expect(getFromLocal("testkey6")).toStrictEqual("testvalue5");
+		assert.equal(getFromLocal("testkey6"), "testvalue5");
 	});
 
-	test("test delete and fetch", () => {
-		let window = environment();
+	it("test window locality", () => {
+		window = environment();
+
+		assert.equal(getFromLocal("testkey1"), null);
+		assert.equal(getFromLocal("testkey2"), null);
+		assert.equal(getFromLocal("testkey3"), null);
+		assert.equal(getFromLocal("testkey4"), null);
+	});
+
+	it("test delete and fetch", () => {
+		window = environment();
+
 		saveToLocal("testkey1", "testvalue1");
 		saveToLocal("testkey2", "testvalue2");
 		saveToLocal("testkey3", "testvalue3");
@@ -42,35 +55,36 @@ describe("test localStorage mock", () => {
 
 		removeFromLocal("testkey3");
 
-		expect(getFromLocal("testkey1")).toStrictEqual("testvalue1");
-		expect(getFromLocal("testkey2")).toStrictEqual("testvalue2");
-		expect(getFromLocal("testkey3")).toStrictEqual(null);
-		expect(getFromLocal("testkey4")).toStrictEqual("testvalue4");
+		assert.equal(getFromLocal("testkey1"), "testvalue1");
+		assert.equal(getFromLocal("testkey2"), "testvalue2");
+		assert.equal(getFromLocal("testkey3"), null);
+		assert.equal(getFromLocal("testkey4"), "testvalue4");
 
 		removeFromLocal("testkey1");
 
-		expect(getFromLocal("testkey1")).toStrictEqual(null);
-		expect(getFromLocal("testkey2")).toStrictEqual("testvalue2");
-		expect(getFromLocal("testkey3")).toStrictEqual(null);
-		expect(getFromLocal("testkey4")).toStrictEqual("testvalue4");
+		assert.equal(getFromLocal("testkey1"), null);
+		assert.equal(getFromLocal("testkey2"), "testvalue2");
+		assert.equal(getFromLocal("testkey3"), null);
+		assert.equal(getFromLocal("testkey4"), "testvalue4");
 
 		removeFromLocal("testkey4");
 		
-		expect(getFromLocal("testkey1")).toStrictEqual(null);
-		expect(getFromLocal("testkey2")).toStrictEqual("testvalue2");
-		expect(getFromLocal("testkey3")).toStrictEqual(null);
-		expect(getFromLocal("testkey4")).toStrictEqual(null);
+		assert.equal(getFromLocal("testkey1"), null);
+		assert.equal(getFromLocal("testkey2"), "testvalue2");
+		assert.equal(getFromLocal("testkey3"), null);
+		assert.equal(getFromLocal("testkey4"), null);
 
 		removeFromLocal("testkey2");
 		
-		expect(getFromLocal("testkey1")).toStrictEqual(null);
-		expect(getFromLocal("testkey2")).toStrictEqual(null);
-		expect(getFromLocal("testkey3")).toStrictEqual(null);
-		expect(getFromLocal("testkey4")).toStrictEqual(null);
+		assert.equal(getFromLocal("testkey1"), null);
+		assert.equal(getFromLocal("testkey2"), null);
+		assert.equal(getFromLocal("testkey3"), null);
+		assert.equal(getFromLocal("testkey4"), null);
 	});
 
-	test("test clear and fetch", () => {
-		let window = environment();
+	it("test clear and fetch", () => {
+		window = environment();
+
 		saveToLocal("testkey1", "testvalue1");
 		saveToLocal("testkey2", "testvalue2");
 		saveToLocal("testkey3", "testvalue3");
@@ -78,9 +92,9 @@ describe("test localStorage mock", () => {
 
 		clearLocal();
 
-		expect(getFromLocal("testkey1")).toStrictEqual(null);
-		expect(getFromLocal("testkey2")).toStrictEqual(null);
-		expect(getFromLocal("testkey3")).toStrictEqual(null);
-		expect(getFromLocal("testkey4")).toStrictEqual(null);
+		assert.equal(getFromLocal("testkey1"), null);
+		assert.equal(getFromLocal("testkey2"), null);
+		assert.equal(getFromLocal("testkey3"), null);
+		assert.equal(getFromLocal("testkey4"), null);
 	});
 });
\ No newline at end of file