Added Basic Darkmode and Fixed Small Bugs

__tests__/utils.test.ts

@@ -0,0 +1,40 @@
+import { cn, absoluteUrl } from '@/lib/utils';
+
+describe('absoluteUrl', () => {
+  const originalEnv = process.env;
+
+  beforeEach(() => {
+    process.env = {
+      ...originalEnv,
+      NEXT_PUBLIC_APP_URL: 'https://example.com',
+    };
+  });
+
+  afterEach(() => {
+    process.env = originalEnv;
+  });
+
+  it('should return the correct absolute URL', () => {
+    const pathname = '/test';
+    expect(absoluteUrl(pathname)).toBe('https://example.com/test');
+  });
+
+  it('should handle empty pathname', () => {
+    const pathname = '';
+    expect(absoluteUrl(pathname)).toBe('https://example.com');
+  });
+});
+
+describe('cn', () => {
+  it('should merge multiple class names', () => {
+    expect(cn('class1', 'class2')).toBe('class1 class2');
+  });
+
+  it('should handle conditional class names', () => {
+    const isActive = true;
+    expect(cn('base', isActive && 'active')).toBe('base active');
+
+    const isDisabled = false;
+    expect(cn('base', isDisabled && 'disabled')).toBe('base');
+  });
+});