import { describe, test, expect } from 'vitest'

import { capitalizeFirstLetter, sortObjectByKey } from './utils'

describe('sortObjectByKey', () => {
  test('sorts object keys alphabetically', () => {
    const obj = { b: 2, a: 1, c: 3 }
    const sortedObj = sortObjectByKey(obj)
    expect(sortedObj).toEqual({ a: 1, b: 2, c: 3 })
  })

  test('handles empty object', () => {
    const obj = {}
    const sortedObj = sortObjectByKey(obj)
    expect(sortedObj).toEqual({})
  })

  test('keeps object keys in original order if already sorted', () => {
    const obj = { a: 1, b: 2, c: 3 }
    const sortedObj = sortObjectByKey(obj)
    expect(sortedObj).toEqual({ a: 1, b: 2, c: 3 })
  })

  test('sorts object keys in reverse alphabetical order', () => {
    const obj = { z: 1, b: 2, a: 3 }
    const sortedObj = sortObjectByKey(obj)
    expect(sortedObj).toEqual({ a: 3, b: 2, z: 1 })
  })

  test('sorts object keys in natural order', () => {
    const sortedObj1 = sortObjectByKey({
      'ScandicRed-100': 1,
      'ScandicRed-20': 1,
      'ScandicRed-40': 1,
      'ScandicRed-10': 1,
      'Grey-80': 1,
    })

    expect(Object.keys(sortedObj1)).toEqual([
      'Grey-80',
      'ScandicRed-10',
      'ScandicRed-20',
      'ScandicRed-40',
      'ScandicRed-100',
    ])
  })
})

describe('capitalizeFirstLetter function', () => {
  test('capitalizes the first letter of a string', () => {
    expect(capitalizeFirstLetter('hello')).toBe('Hello')
  })

  test('does not change an empty string', () => {
    expect(capitalizeFirstLetter('')).toBe('')
  })

  test('does not change a string already starting with an uppercase letter', () => {
    expect(capitalizeFirstLetter('World')).toBe('World')
  })
})