test: add example Vitest test suite with basic assertions

Add example test file demonstrating Vitest usage with basic assertions for numbers, arrays, and objects

Author: relliv

resources/js/example.spec.ts

@@ -0,0 +1,19 @@
+import { describe, expect, it } from 'vitest';
+
+describe('Example Test Suite', () => {
+    it('should pass a basic assertion', () => {
+        expect(1 + 1).toBe(2);
+    });
+
+    it('should work with arrays', () => {
+        const items = ['apple', 'banana', 'cherry'];
+        expect(items).toHaveLength(3);
+        expect(items).toContain('banana');
+    });
+
+    it('should work with objects', () => {
+        const user = { name: 'John', age: 30 };
+        expect(user).toHaveProperty('name');
+        expect(user.name).toBe('John');
+    });
+});