Password Validator (TDD) 🔒

A Python application that validates passwords against defined security requirements using Test-Driven Development (TDD).

Overview

This project demonstrates the use of Test-Driven Development (TDD) by implementing a password validation function through incremental test creation and implementation. The application verifies that passwords meet a specified set of security rules and includes an automated test suite.

Architecture

File	Description
check_pwd.py	Contains the password validation logic
tests.py	Contains automated unit tests using Python's unittest framework

Features

Feature	Description
Length validation	Ensures passwords are between 8 and 20 characters
Lowercase requirement	Requires at least one lowercase letter
Uppercase requirement	Requires at least one uppercase letter
Digit requirement	Requires at least one numeric digit
Symbol requirement	Requires at least one approved special character
Automated testing	Verifies functionality through unit tests

Getting Started

Prerequisites

Installation

git clone https://github.com/desibragg/password-validator-tdd.git
cd password-validator-tdd

Run Tests

python tests.py

Example

from check_pwd import check_pwd

print(check_pwd("Hello123!"))  # True
print(check_pwd("hello123"))   # False

Technologies

• Python
• unittest
• Test-Driven Development (TDD)
• Git/GitHub