Workshop Name: Requirements Validation with Test-driven Development Description
We will discuss and implement software requirements for our simple calculator app.
Targeted Courses
Software Quality Assurance
Activities
Pre-lab Content Dissemination
Requirements engineering is the process of discovering, analyzing, documenting and validating the requirements of the system. Each software development process goes through the phase of requirements engineering. Engineered requirements are often translated to software features through different software development methodologies, such as test driven development and behavior development. We will use both, test driven development and behavior driven development in this workshop.
Test-driven Development (TDD)
The steps for TDD is:
1. Your test fails
2. Write code to fix your test
3. Your test passes
4. Refactor your test code
Behavior-driven Development (BDD)
The steps for BDD is:
1. Specify a feature file that describes the requirements in natural language
2. Specify a steps file that executes what needs to be done to satisfy the requirements
3. Implement the development file to satisfy the steps
In-class Hands-on Experience
Navigate to https://github.com/paser-group/continuous-secsoft/tree/master/software-quality-assurance/bddcalc
Apply test-driven development (TDD) to implement a subtraction operation for our simple calculator. We will use unittest.
Apply behavior-driven development (BDD) to implement a subtraction operation for our simple calculator. We will use behave. Demo will be recorded and shared on CANVAS
Assignment 3 (Post Lab Experience)
For this part of the workshop you will develop two Python program files to demonstrate that you have practiced test-driven development (TDD).
Your code should satisfy the following requirements:
The calculator must be able to multiply and divide
All methods related to mathematical operations should sanitize input
All methods related to mathematical operations should handle division by zero exceptions
All methods related to mathematical operations should be fast
You have applied static analysis to your Python program files. Use the Bandit tool to perform static analysis and report any weaknesses that you find in a TEXT file
