JavaScript/String/test/IsPalindrome.test.js at master · TheAlgorithms/JavaScript · GitHub

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import { isPalindromeIterative } from '../IsPalindrome'

describe('isPalindrome', () => {

it('expects to return true with empty string', () => {

expect(isPalindromeIterative('')).toEqual(true)

})

it('expects to return true when length of input is 1', () => {

const numberInput = 6

const stringInput = 'a'

expect(isPalindromeIterative(numberInput)).toEqual(true)

expect(isPalindromeIterative(stringInput)).toEqual(true)

})

it('expects to return true when input is palindrome', () => {

expect(isPalindromeIterative(121)).toEqual(true)

expect(isPalindromeIterative('yooy')).toEqual(true)

expect(isPalindromeIterative('19noon91')).toEqual(true)

expect(isPalindromeIterative('!*tyyt*!')).toEqual(true)

})

it('expects to return false when input is not palindrome', () => {

expect(isPalindromeIterative('hello')).toEqual(false)

expect(isPalindromeIterative(189)).toEqual(false)

expect(isPalindromeIterative('!*98[!')).toEqual(false)

})

it('expects to throw error when input is not a string or a number', () => {

expect(() => isPalindromeIterative(undefined)).toThrowError()

expect(() => isPalindromeIterative({ key: 'val' })).toThrowError()

expect(() => isPalindromeIterative([])).toThrowError()

})

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