import { describe, it, expect } from '@jest/globals';
import {
  validateEmail,
  validateUrl,
  sanitizeString
} from '../../src/lib/validation';

describe('Validation Utilities', () => {
  describe('validateEmail', () => {
    it('should return true for valid emails', () => {
      expect(validateEmail('test@example.com')).toBe(true);
      expect(validateEmail('user.name@domain.co.uk')).toBe(true);
    });

    it('should return false for invalid emails', () => {
      expect(validateEmail('invalid-email')).toBe(false);
      expect(validateEmail('@example.com')).toBe(false);
      expect(validateEmail('')).toBe(false);
    });
  });

  describe('validateUrl', () => {
    it('should return true for valid URLs', () => {
      expect(validateUrl('https://example.com')).toBe(true);
      expect(validateUrl('http://localhost:3000')).toBe(true);
    });

    it('should return false for invalid URLs', () => {
      expect(validateUrl('not-a-url')).toBe(false);
      expect(validateUrl('')).toBe(false);
    });
  });

  describe('sanitizeString', () => {
    it('should trim whitespace', () => {
      expect(sanitizeString('  test  ')).toBe('test');
    });

    it('should limit string length', () => {
      const longString = 'a'.repeat(2000);
      expect(sanitizeString(longString, 100)).toHaveLength(100);
    });

    it('should remove HTML tags', () => {
      expect(sanitizeString('test<script>alert(1)</script>test')).toBe('testscriptalert(1)/scripttest');
    });
  });
});