7-password-validator.js

/* 
Password Validation

Write a program that should check if each password in an array 
contains a valid password (see below for password criteria) and return a
new array with true or false booleans for whether that password was valid or not.

To be valid, a password must:
- Have at least 5 characters.
- Have at least one English uppercase letter (A-Z)
- Have at least one English lowercase letter (a-z)
- Have at least one number (0-9)
- Have at least one non-alphanumeric symbol ("!", "#", "$", "%", ".", "*", "&")

Passwords must not be any previous password in the passwords array. 

Example 1:
PreviousPassword = ["fhD8!yrjj", "ttkTu.wer3", "dvyyeyY!5", "qwbfj76%", "tytT3729."];

Expected Result:
PasswordValidationResult=  [false, false, false, false, true]

*/
//FUNCTION TO CHECK IF LOWERCASE LETTERS ARE FOUND
 function isLowerCase(word){
   let newWord = word.split(''); //output ["w", "o", "r", "d"]
   let res = newWord.some(x => x >= 'a' && x <= 'z');
   return res;
 
}
//FUNCTION TO CHECK IF UPPERCASE LETTERS ARE PRESENT
function isUpperCase(word){
    let newWord = word.split(''); //output ["w", "o", "r", "d"]
    let res = newWord.some(x => x >= 'A' && x <= 'Z');
    return res;
  
 }
 //FUNCTION TO CHECK IF NUMBERS ARE PRESENT
 function isNum(word){
   let newWord = word.split(''); //output ["w", "o", "r", "d"]
   let res = newWord.some(x => x >= 0 && x <= 9);
   return res;
 
}
//FUNCTION TO CHECK IF SELECTED SYMBOLE ARE PRESENT
function isSymbols(word){
   let newWord = word.split(''); //output ["w", "o", "r", "d"]
   let res = newWord.some(x => x === '!' || x === '#' || x === '.' || x === '$' || x === '%');
   return res;
 
}

function validatePasswords(arr) {
   let splitArray = arr.map(element => element.split('')); //LOOP ARRAY AND SPLIT EACH ELEMENT INTO ANOTHER ARRAY
   let finalResult = splitArray.map(item => item.some(isLowerCase) && item.some(isUpperCase)
   && item.some(isNum) && item.some(isSymbols) && item.length >=5); //LOOP THROUGH EACH LETTER TO CONFIRM ALL CONDITIONS ARE MET
   return finalResult;
}

/* ======= TESTS - DO NOT MODIFY ===== */

 const passwords1 = ["Se%5", "TktE.TJTU", "384#HsHF", "dvyyeyy!5", "tryT3729"]
 const passwords2 = ["StUFf27%", "Pl3nty!", "Jai33", "shajsaUA**&&", "Pl3nty"]


const util = require('util');

function test(test_name, actual, expected) {
    let status;
    if (util.isDeepStrictEqual(actual, expected)) {
        status = "PASSED";
    } else {
        status = `FAILED: expected: ${util.inspect(expected)} but your function returned: ${util.inspect(actual)}`;
    }

    console.log(`${test_name}: ${status}`);
}

test(
  "validatePasswords function works - case 1",
  validatePasswords(passwords1),
  [false, false, true, false, false]
 );

test(
  "validatePasswords function works - case 2",
  validatePasswords(passwords2),
  [true, true, false, false, false]
);