diff --git a/jest.config.ts b/jest.config.ts
new file mode 100644
index 000000000..0002e04a8
--- /dev/null
+++ b/jest.config.ts
@@ -0,0 +1,26 @@
+import type { Config } from 'jest';
+
+const config: Config = {
+  preset: 'jest-preset-angular',
+  testEnvironment: 'jsdom',
+  setupFilesAfterEnv: ['<rootDir>/setup-jest.ts'],
+  testMatch: ['**/?(*.)+(spec).ts'],
+  transform: {
+    '^.+\\.(ts|mjs|js)$': [
+      'jest-preset-angular',
+      {
+        tsconfig: '<rootDir>/tsconfig.spec.json',
+      },
+    ],
+  },
+  moduleFileExtensions: ['ts', 'js', 'html'],
+  moduleNameMapper: {
+    '^@app/(.*)$': '<rootDir>/src/app/$1',
+  },
+  testPathIgnorePatterns: ['/node_modules/', '/dist/'],
+  reporters: ['default'],
+};
+
+export default config;
+
+
diff --git a/package.json b/package.json
index 0cd7ccce8..12aae9d80 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "ng": "ng",
     "start": "ng serve",
     "build": "ng build",
-    "test": "ng test",
+    "test": "jest",
     "lint": "ng lint --force",
     "prepare": "husky install"
   },
@@ -34,10 +34,14 @@
     "@angular/build": "^20.0.0",
     "@angular/cli": "^20.0.0",
     "@angular/compiler-cli": "20.0.0",
+    "@types/jest": "^29.5.12",
     "@types/marked": "^6.0.0",
+    "jest": "^29.7.0",
+    "jest-preset-angular": "^14.0.0",
     "husky": "^8.0.3",
     "lint-staged": "^16.1.2",
     "prettier": "^3.1.1",
+    "ts-node": "^10.9.2",
     "typescript": "~5.8.3"
   },
   "lint-staged": {
diff --git a/setup-jest.ts b/setup-jest.ts
new file mode 100644
index 000000000..5c1d3caa2
--- /dev/null
+++ b/setup-jest.ts
@@ -0,0 +1,6 @@
+import 'jest-preset-angular/setup-jest';
+
+// Optional: mock for window.scrollTo etc. add minimal DOM APIs if needed
+Object.defineProperty(window, 'scrollTo', { value: () => {}, writable: true });
+
+
diff --git a/src/app/core/auth/services/jwt.service.spec.ts b/src/app/core/auth/services/jwt.service.spec.ts
new file mode 100644
index 000000000..1cb71bd2a
--- /dev/null
+++ b/src/app/core/auth/services/jwt.service.spec.ts
@@ -0,0 +1,25 @@
+import { TestBed } from "@angular/core/testing";
+import { JwtService } from "./jwt.service";
+
+describe("JwtService", () => {
+  let service: JwtService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(JwtService);
+    window.localStorage.clear();
+  });
+
+  it("should save and get token", () => {
+    service.saveToken("abc123");
+    expect(service.getToken()).toBe("abc123");
+  });
+
+  it("should remove token on destroy", () => {
+    service.saveToken("xyz");
+    service.destroyToken();
+    expect(service.getToken()).toBeUndefined();
+  });
+});
+
+
diff --git a/src/app/shared/components/list-errors.component.spec.ts b/src/app/shared/components/list-errors.component.spec.ts
new file mode 100644
index 000000000..c0cae81f4
--- /dev/null
+++ b/src/app/shared/components/list-errors.component.spec.ts
@@ -0,0 +1,17 @@
+import { ListErrorsComponent } from "./list-errors.component";
+
+describe("ListErrorsComponent", () => {
+  it("should build errorList from Errors input", () => {
+    const cmp = new ListErrorsComponent();
+    cmp.errors = { errors: { email: "is invalid", password: "is too short" } };
+    expect(cmp.errorList).toEqual(["email is invalid", "password is too short"]);
+  });
+
+  it("should handle null input as empty list", () => {
+    const cmp = new ListErrorsComponent();
+    cmp.errors = null;
+    expect(cmp.errorList).toEqual([]);
+  });
+});
+
+
diff --git a/src/app/shared/pipes/markdown.pipe.spec.ts b/src/app/shared/pipes/markdown.pipe.spec.ts
new file mode 100644
index 000000000..e3ddc221f
--- /dev/null
+++ b/src/app/shared/pipes/markdown.pipe.spec.ts
@@ -0,0 +1,19 @@
+import { TestBed } from "@angular/core/testing";
+import { MarkdownPipe } from "./markdown.pipe";
+import { DomSanitizer } from "@angular/platform-browser";
+
+jest.mock("marked", () => ({
+  marked: {
+    parse: (content: string) => `<p>${content}</p>`,
+  },
+}));
+
+describe("MarkdownPipe", () => {
+  it("should render markdown to sanitized HTML", async () => {
+    const pipe = TestBed.runInInjectionContext(() => new MarkdownPipe());
+    const result = await pipe.transform("Hello");
+    expect(result).toBe("<p>Hello</p>");
+  });
+});
+
+
diff --git a/tsconfig.spec.json b/tsconfig.spec.json
index 47e3dd755..1b1d13e41 100644
--- a/tsconfig.spec.json
+++ b/tsconfig.spec.json
@@ -3,7 +3,7 @@
   "extends": "./tsconfig.json",
   "compilerOptions": {
     "outDir": "./out-tsc/spec",
-    "types": ["jasmine"]
+    "types": ["jest", "node"]
   },
   "include": ["src/**/*.spec.ts", "src/**/*.d.ts"]
 }