feat: add testing setup with Vitest and Testing Library

- Updated package.json to include Vitest and Testing Library dependencies and scripts for testing.
- Created a test suite for the ProvinceProvider context to validate cityId and province detection based on subdomains.
- Implemented unit tests for utility functions in helper/index.js, including phone number formatting and validation.
- Added tests for state information retrieval in lib/getStateInfo.js, ensuring correct city and state matching based on subdomains.
- Developed tests for appointment slot adaptation and availability checks in lib/appointmentSlots.js.
- Created tests for token storage functionality in lib/tokenStore.js.
- Implemented sanitization and JSON parsing tests in lib/sanitize.js.
- Added CASL ability tests in lib/ability.js to verify user access rights.
- Created tests for cookie management in lib/refreshCookie.js.
- Developed tests for patient user representation in lib/representationAdapters.js.
- Implemented client-side state information retrieval tests in lib/getStateInfoClient.js.
- Created tests for canonical URL generation in lib/getCanonicalUrl.js.
- Developed tests for clinic API service functions in services/clinicApi.js.
- Added request wrapper tests in services/response.js to ensure correct API interaction.
- Set up Vitest configuration in vitest.config.mjs for JSX support and alias resolution.
- Created setup and utility files for testing environment in test/setup.js and test/utils.jsx.

lib/multiDomainClient.test.js

@@ -0,0 +1,42 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import { getStateInfoClient } from '@/lib/getStateInfoClient';
+import { getCanonicalUrlClient } from '@/lib/getCanonicalUrl';
+
+function setLocation(loc) {
+    Object.defineProperty(window, 'location', { value: loc, writable: true, configurable: true });
+}
+
+describe('getStateInfoClient (window)', () => {
+    it('subdomain شناخته‌شده → شهر و استان', () => {
+        setLocation({ host: 'arak-nobat.ir', href: 'https://arak-nobat.ir/' });
+        const { matchedCity, matchedState, host } = getStateInfoClient();
+        expect(matchedCity?.name).toBe('اراک');
+        expect(matchedState?.name).toBe('مرکزی');
+        expect(host).toBe('arak-nobat.ir');
+    });
+
+    it('host ناشناخته → بدون تطبیق', () => {
+        setLocation({ host: 'zzz.ir', href: 'https://zzz.ir/' });
+        expect(getStateInfoClient().matchedCity).toBeUndefined();
+    });
+});
+
+describe('getCanonicalUrlClient (window)', () => {
+    beforeEach(() => {
+        setLocation({ host: 'arak-nobat.ir', pathname: '/doctors' });
+    });
+
+    it('subdomain → canonical به دامنه‌ی اصلی', () => {
+        expect(getCanonicalUrlClient()).toBe('https://nobat724.com/doctors');
+    });
+
+    it('دامنه‌ی اصلی → null', () => {
+        setLocation({ host: 'nobat724.com', pathname: '/doctors' });
+        expect(getCanonicalUrlClient()).toBeNull();
+    });
+
+    it('www و حروف بزرگ نرمال می‌شوند (دامنه‌ی اصلی) → null', () => {
+        setLocation({ host: 'WWW.Nobat724.com', pathname: '/x' });
+        expect(getCanonicalUrlClient()).toBeNull();
+    });
+});