diff --git a/jest.config.js b/jest.config.js
new file mode 100644
index 0000000..31364f0
--- /dev/null
+++ b/jest.config.js
@@ -0,0 +1,7 @@
+module.exports = {
+    preset: 'ts-jest',
+    testEnvironment: 'node',
+    transform: {
+        '^.+\\.tsx?$': 'ts-jest',
+    },
+};
\ No newline at end of file
diff --git a/modules/ecs6-class/line.ts b/modules/ecs6-class/line.ts
index e2d6086..2719731 100644
--- a/modules/ecs6-class/line.ts
+++ b/modules/ecs6-class/line.ts
@@ -12,26 +12,28 @@ export default class Line {
         this.n = n;
     }
 
-  
-
     calculateSlope() {
         this.slope = (this.point1.y - this.point2.y) / (this.point1.x - this.point2.x)
     }
 
+
     calculateNOfLineFunction() {
+        this.calculateSlope(); // הוספת קריאה כאן
         if (this.slope)
-            this.n = this.point1.y - this.slope * this.point1.x
+            this.n = this.point1.y - this.slope * this.point1.x;
     }
 
     getPointOnXAsis() {
-        return this.getPointByY(0)
+        this.calculateSlope(); // הוספת קריאה כאן
+        return this.getPointByY(0);
     }
-
     getPointOnYAsis() {
-        return this.getPointByX(0)
+        this.calculateSlope(); // הוספת קריאה כאן
+        return this.getPointByX(0);
     }
 
 
+
     getPointByX(x: number) {
         if (this.slope && this.n) {
             let y = this.slope * x + this.n
@@ -48,3 +50,9 @@ export default class Line {
 
 
 }
+
+
+
+
+
+
diff --git a/modules/ecs6-class/point.ts b/modules/ecs6-class/point.ts
index 0b6c320..bea12fe 100644
--- a/modules/ecs6-class/point.ts
+++ b/modules/ecs6-class/point.ts
@@ -13,3 +13,4 @@ export default class Point {
     }
 }
 
+
diff --git a/modules/tests/line.test.ts b/modules/tests/line.test.ts
new file mode 100644
index 0000000..337593e
--- /dev/null
+++ b/modules/tests/line.test.ts
@@ -0,0 +1,70 @@
+import Line from '../ecs6-class/line';
+import Point from '../ecs6-class/point';
+
+describe('Line class', () => {
+    let line: Line;
+    let point1: Point;
+    let point2: Point;
+
+    beforeEach(() => {
+        point1 = new Point({ x: 1, y: 2 });
+        point2 = new Point({ x: 3, y: 4 });
+        line = new Line({ point1, point2 });
+    });
+
+    it('should calculate slope correctly', () => {
+        line.calculateSlope();
+        expect(line.slope).toBe(1); // (2 - 4) / (1 - 3) = 1
+    });
+
+    it('should calculate n of line function correctly', () => {
+        line.calculateNOfLineFunction();
+        expect(line.n).toBe(1); // 2 - 1 * 1 = 1
+    });
+
+    it('should get point on X axis correctly', () => {
+        line.calculateNOfLineFunction();
+        const pointOnX = line.getPointOnXAsis();
+        expect(pointOnX).toEqual(new Point({ x: -1, y: 0 })); // x = (0 - 1) / 1
+    });
+
+    it('should get point on Y axis correctly', () => {
+        line.calculateNOfLineFunction();
+        const pointOnY = line.getPointOnYAsis();
+        expect(pointOnY).toEqual(new Point({ x: 0, y: 1 })); // y = 1 * 0 + 1
+    });
+
+    it('should get point by X correctly', () => {
+        line.calculateNOfLineFunction();
+        const pointByX = line.getPointByX(2);
+        expect(pointByX).toEqual(new Point({ x: 2, y: 3 })); // y = 1 * 2 + 1
+    });
+
+    it('should get point by Y correctly', () => {
+        line.calculateNOfLineFunction();
+        const pointByY = line.getPointByY(3);
+        expect(pointByY).toEqual(new Point({ x: 2, y: 3 })); // x = (3 - 1) / 1
+    });
+    it('calculateNOfLineFunction should not set n if slope is undefined', () => {
+        const line = new Line({ point1: new Point({ x: 1, y: 2 }), point2: new Point({ x: 3, y: 4 }) });
+        line.calculateNOfLineFunction();
+        expect(line.n).toBeUndefined();
+    });
+
+    it('getPointByX should return undefined if slope or n is undefined', () => {
+        const line = new Line();
+        expect(line.getPointByX(5)).toBeUndefined();
+    });
+
+    it('getPointByY should return undefined if slope or n is undefined', () => {
+        const line = new Line();
+        expect(line.getPointByY(5)).toBeUndefined();
+    });
+});
+
+
+
+
+
+
+
diff --git a/modules/tests/point.test.ts b/modules/tests/point.test.ts
new file mode 100644
index 0000000..6da9264
--- /dev/null
+++ b/modules/tests/point.test.ts
@@ -0,0 +1,34 @@
+import Point from '../ecs6-class/point';
+
+describe('Point class', () => {
+    let point: Point;
+
+    beforeEach(() => {
+        point = new Point({ x: 5, y: 10 });
+    });
+
+    test('should initialize with default values', () => {
+        const defaultPoint = new Point();
+        expect(defaultPoint.x).toBe(0);
+        expect(defaultPoint.y).toBe(0);
+    });
+
+    test('should initialize with provided values', () => {
+        expect(point.x).toBe(5);
+        expect(point.y).toBe(10);
+    });
+
+    test('should move vertically', () => {
+        point.moveVertical(5);
+        expect(point.y).toBe(15);
+        point.moveVertical(-3);
+        expect(point.y).toBe(12);
+    });
+
+    test('should move horizontally', () => {
+        point.moveHorizontal(3);
+        expect(point.x).toBe(8);
+        point.moveHorizontal(-2);
+        expect(point.x).toBe(6);
+    });
+});
\ No newline at end of file
diff --git a/package.json b/package.json
index f9371ee..d4691d2 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,8 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "test": "jest"
+    "test": "jest",
+    "test:coverage": "jest --coverage"
   },
   "repository": {
     "type": "git",
@@ -22,6 +23,7 @@
   "devDependencies": {
     "@types/jest": "^30.0.0",
     "jest": "^30.0.4",
+    "ts-jest": "^29.4.0",
     "ts-node": "^10.9.2",
     "typescript": "^5.8.3"
   }
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..9282fab
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,6 @@
+{
+    "compilerOptions": {
+        "types": ["jest"],
+        "esModuleInterop": true
+    }
+}
\ No newline at end of file