simple-string-utils-study/test.js

Simple string utility functions for study purposes

const { capitalize, reverse, kebabCase, wordCount } = require('./index.js');

function test(name, fn) {
  try {
    fn();
    console.log(`✅ ${name}`);
  } catch (error) {
    console.log(`❌ ${name}: ${error.message}`);
  }
}

function assertEqual(actual, expected) {
  if (actual !== expected) {
    throw new Error(`Expected ${expected}, but got ${actual}`);
  }
}

test('capitalize function', () => {
  assertEqual(capitalize('hello'), 'Hello');
  assertEqual(capitalize('WORLD'), 'World');
  assertEqual(capitalize(''), '');
});

test('reverse function', () => {
  assertEqual(reverse('hello'), 'olleh');
  assertEqual(reverse('world'), 'dlrow');
  assertEqual(reverse(''), '');
});

test('kebabCase function', () => {
  assertEqual(kebabCase('HelloWorld'), 'hello-world');
  assertEqual(kebabCase('hello world'), 'hello-world');
  assertEqual(kebabCase('test case'), 'test-case');
});

test('wordCount function', () => {
  assertEqual(wordCount('hello world'), 2);
  assertEqual(wordCount('one two three'), 3);
  assertEqual(wordCount(''), 0);
  assertEqual(wordCount('   '), 0);
});

console.log('All tests completed!');