We have improved the validation functions validateUsername and validatePassword adding the following rules for the username and password respectively:

• The username should be between 3 and 20 characters in length and it can only contain alphanumeric characters.
• The password should be at least 8 characters long and it should contain a combination of lower and uppercase letters along with at least one number or symbol;

Your task is to:

• Organize the test cases present in validation.js Test Script, into appropriate describe blocks.
• Write test cases to test case code in auth.js. Make sure to enclose the test cases in proper describe blocks;

Following are the test cases you have to write in the __test__/auth.js file:

Test ID: 1

1. Title: Hash a valid password;
2. Precondition: The hashPassword function is available;
3. Test Steps:
   • Pass the string 'examplePassword123' to the hashPassword function;
4. Expected Result: The function should return a string that is different from the input password;

Test ID: 2

1. Title: Hash an empty password;
2. Precondition: The hashPassword function is available;
3. Test Steps:
   • Pass an empty string '' to the hashPassword function;
4. Expected Result: The function should return a non-empty string;

Test ID: 3

1. Title: Compare a valid password with its correct hash;
2. Precondition: The comparePassword and hashPassword functions are available;
3. Test Steps:
   • Hash the string 'examplePassword123' using the hashPassword function;
   • Pass the original password 'examplePassword123' and the generated hash to the comparePassword function;
4. Expected Result: The function should return true, indicating the password matches the hash;

Test ID: 4

1. Title: Compare a valid password with an incorrect hash;
2. Precondition: The comparePassword and hashPassword functions are available;
3. Test Steps:
   • Hash the string 'examplePassword123' using the hashPassword function;
   • Pass a different password 'wrongPassword456' and the generated hash to the comparePassword function;
4. Expected Result: The function should return false, indicating the password does not match the hash;