diff --git a/src/features/auth/model/stores/authStore/authStore.spec.ts b/src/features/auth/model/stores/authStore/authStore.spec.ts
new file mode 100644
index 0000000..314c26b
--- /dev/null
+++ b/src/features/auth/model/stores/authStore/authStore.spec.ts
@@ -0,0 +1,123 @@
+import { setupServer } from "msw/node";
+import {
+  loginMock,
+  registerMock,
+  logoutMock,
+  refreshMock,
+} from "../../../api/calls";
+import { defaultStoreState, useAuthStore } from "./authStore";
+import {
+  MOCK_EMAIL,
+  MOCK_NEW_EMAIL,
+  MOCK_PASSWORD,
+  MOCK_TOKEN,
+} from "../../../api/calls/mocks";
+
+const server = setupServer(loginMock, registerMock, logoutMock, refreshMock);
+
+describe("authStore", () => {
+  beforeAll(() => server.listen({ onUnhandledRequest: "error" }));
+  afterEach(() => {
+    useAuthStore.getState().reset();
+    server.resetHandlers();
+  });
+  afterAll(() => server.close());
+
+  describe("reset", () => {
+    it("should reset the store to default state", () => {
+      useAuthStore.getState().reset();
+      expect(useAuthStore.getState()).toMatchObject({ ...defaultStoreState });
+    });
+  });
+
+  describe("login", () => {
+    it("should set access token, user data, and update status after successful login", async () => {
+      await useAuthStore
+        .getState()
+        .login({ email: MOCK_EMAIL, password: MOCK_PASSWORD });
+
+      const { accessToken, user, status, error } = useAuthStore.getState();
+
+      expect(accessToken).toBeDefined();
+      expect(user).toBeDefined();
+      expect(status).toBe("authenticated");
+      expect(error).toBeNull();
+    });
+
+    it("should set error and update status if login fails", async () => {
+      await useAuthStore
+        .getState()
+        .login({ email: "wrong@test.com", password: "wrongPassword" });
+
+      const { status, error } = useAuthStore.getState();
+
+      expect(status).toBe("unauthenticated");
+      expect(error).toBeDefined();
+    });
+  });
+
+  describe("register", () => {
+    it("should set access token, user data, and update status after successful registration", async () => {
+      await useAuthStore
+        .getState()
+        .register({ email: MOCK_NEW_EMAIL, password: MOCK_PASSWORD });
+
+      const { accessToken, user, status, error } = useAuthStore.getState();
+
+      expect(accessToken).toBeDefined();
+      expect(user).toBeDefined();
+      expect(status).toBe("authenticated");
+      expect(error).toBeNull();
+    });
+
+    it("should set error and update status if registration fails", async () => {
+      await useAuthStore
+        .getState()
+        .register({ email: MOCK_EMAIL, password: MOCK_PASSWORD });
+
+      const { status, error } = useAuthStore.getState();
+
+      expect(status).toBe("unauthenticated");
+      expect(error).toBeDefined();
+    });
+  });
+
+  describe("logout", () => {
+    it("should clear access token, user data, and update status after logout", async () => {
+      await useAuthStore.getState().logout();
+
+      const { accessToken, user, status, error } = useAuthStore.getState();
+
+      expect(accessToken).toBeUndefined();
+      expect(user).toBeUndefined();
+      expect(status).toBe("unauthenticated");
+      expect(error).toBeNull();
+    });
+  });
+
+  describe("refresh", () => {
+    it("should update access token and user data after successful refresh", async () => {
+      useAuthStore.setState({ accessToken: MOCK_TOKEN });
+
+      await useAuthStore.getState().refresh();
+
+      const { accessToken, user, status, error } = useAuthStore.getState();
+
+      expect(accessToken).toBeDefined();
+      expect(user).toBeDefined();
+      expect(status).toBe("authenticated");
+      expect(error).toBeNull();
+    });
+
+    it("should set error and update status if refresh fails", async () => {
+      useAuthStore.setState({ accessToken: "old_token" });
+
+      await useAuthStore.getState().refresh();
+
+      const { status, error } = useAuthStore.getState();
+
+      expect(status).toBe("unauthenticated");
+      expect(error).toBeDefined();
+    });
+  });
+});