diff --git a/source/assets/scripts/localStorage.test.js b/source/assets/scripts/localStorage.test.js
index 90ed2b7..94730d1 100644
--- a/source/assets/scripts/localStorage.test.js
+++ b/source/assets/scripts/localStorage.test.js
@@ -1,49 +1,108 @@
 import {strict as assert} from "node:assert";
 import {describe, it, beforeEach} from "mocha";
-import {saveReviewsToStorage, getReviewsFromStorage} from "./localStorage.js";
+import {newReviewToStorage, getReviewFromStorage, updateReviewToStorage, deleteReviewFromStorage, getAllReviewsFromStorage} from "./localStorage.js";
 
 describe("test app localStorage interaction", () => {
 	
-	beforeEach(() => {
+	before(() => {
 		localStorage.clear();
+		localStorage.setItem("activeIDS", JSON.stringify([]));
+		localStorage.setItem("nextID", JSON.stringify(0));
 	});
 
-	it("get after init", () => {
-		assert.deepEqual(getReviewsFromStorage(), []);
+	it("test localStorage state after init", () => {
+		assert.deepEqual(getAllReviewsFromStorage(), []);
+		assert.deepEqual(JSON.parse(localStorage.getItem("activeIDS")), []);
+		assert.strictEqual(JSON.parse(localStorage.getItem("nextID")), 0);
 	});
-	it("store one then get", () => {
-		let reviews = [{
+
+	it("test localStorage state after adding one review", () => {
+		let review = {
 			"imgSrc": "sample src",
 			"imgAlt": "sample alt",
 			"mealName": "sample name",
 			"restaurant": "sample restaurant",
 			"rating": 5,
 			"tags": ["tag 1", "tag  2", "tag 3"]
-		}];
+		};
 
-		saveReviewsToStorage(reviews);
-		assert.deepEqual(getReviewsFromStorage(), reviews);
+		newReviewToStorage(review);
+
+		review.reviewID = 0;
+
+		assert.deepEqual(getAllReviewsFromStorage(), [review]);
+		assert.deepEqual(getReviewFromStorage(0), review);
+		assert.deepEqual(JSON.parse(localStorage.getItem("activeIDS")), [0]);
+		assert.strictEqual(JSON.parse(localStorage.getItem("nextID")), 1);
 	});
-	it("repeated store one more and get", () => {
-		let reviews = [];
 
-		assert.deepEqual(getReviewsFromStorage(), reviews);
+	it("test localStorage state during adding 999 reviews", () => {
+		let reviews = getAllReviewsFromStorage();
+		let ids = [0];
+
+		for(let i = 1; i < 1000; i++){
+			ids.push(i);
+			let new_review = {
+				"imgSrc": `sample src ${i}`,
+				"imgAlt": `sample alt ${i}`,
+				"mealName": `sample name ${i}`,
+				"restaurant": `sample restaurant ${i}`,
+				"rating": i,
+				"tags": [`tag ${3*i}`, `tag ${3*i + 1}`, `tag ${3*i + 2}`]
+			}
+
+			newReviewToStorage(new_review);
+
+			new_review.reviewID = i;
+			reviews.push(new_review);
+
+			assert.deepEqual(getAllReviewsFromStorage(), reviews);
+			assert.deepEqual(getReviewFromStorage(i), new_review);
+			assert.deepEqual(JSON.parse(localStorage.getItem("activeIDS")), ids);
+			assert.strictEqual(JSON.parse(localStorage.getItem("nextID")), (i+1));
+		}
+	}).timeout(5000);
+
+	it("test localStorage state during updating 1000 reviews", () => {
+		let reviews = getAllReviewsFromStorage();
+		let ids = JSON.parse(localStorage.getItem("activeIDS"));
 
 		for(let i = 0; i < 1000; i++){
-			reviews = getReviewsFromStorage();
-			
-			reviews.push(
-				{
-					"imgSrc": `sample src ${i}`,
-					"imgAlt": `sample alt ${i}`,
-					"mealName": `sample name ${i}`,
-					"restaurant": `sample restaurant ${i}`,
-					"rating": i,
-					"tags": [`tag ${3*i}`, `tag ${3*i + 1}`, `tag ${3*i + 2}`]
-				}
-			);
-			saveReviewsToStorage(reviews);
-			assert.deepEqual(getReviewsFromStorage(), reviews);
+			let new_review = {
+				"imgSrc": `updated sample src ${i}`,
+				"imgAlt": `updated sample alt ${i}`,
+				"mealName": `updated sample name ${i}`,
+				"restaurant": `updated sample restaurant ${i}`,
+				"rating": i*2+i,
+				"tags": [`tag ${3*i}`, `tag ${3*i + 1}`, `tag ${3*i + 2}`]
+			}
+			new_review.reviewID = i;
+
+			reviews[i] = new_review;
+
+			updateReviewToStorage(i, new_review);
+
+			assert.deepEqual(getAllReviewsFromStorage(), reviews);
+			assert.deepEqual(getReviewFromStorage(i), new_review);
+			assert.deepEqual(JSON.parse(localStorage.getItem("activeIDS")), ids);
+			assert.strictEqual(JSON.parse(localStorage.getItem("nextID")), 1000);
 		}
-	}).timeout(10000);
+	}).timeout(5000);
+
+	it("test localStorage state during deleting 1000 reviews", () => {
+		let reviews = getAllReviewsFromStorage();
+		let ids = JSON.parse(localStorage.getItem("activeIDS"));
+
+		for(let i = 999; i >= 0; i--){
+			deleteReviewFromStorage(i);
+			ids.pop();
+			reviews.pop();
+
+			assert.deepEqual(getAllReviewsFromStorage(), reviews);
+			assert.deepEqual(JSON.parse(localStorage.getItem("activeIDS")), ids);
+			assert.strictEqual(JSON.parse(localStorage.getItem("nextID")), 1000);
+		}
+	}).timeout(5000);
+
+	after(() => {});
 });