Book Image

Agile Technical Practices Distilled

By : Pedro M. Santos, Marco Consolaro, Alessandro Di Gioia
Book Image

Agile Technical Practices Distilled

By: Pedro M. Santos, Marco Consolaro, Alessandro Di Gioia

Overview of this book

The number of popular technical practices has grown exponentially in the last few years. Learning the common fundamental software development practices can help you become a better programmer. This book uses the term Agile as a wide umbrella and covers Agile principles and practices, as well as most methodologies associated with it. You’ll begin by discovering how driver-navigator, chess clock, and other techniques used in the pair programming approach introduce discipline while writing code. You’ll then learn to safely change the design of your code using refactoring. While learning these techniques, you’ll also explore various best practices to write efficient tests. The concluding chapters of the book delve deep into the SOLID principles - the five design principles that you can use to make your software more understandable, flexible and maintainable. By the end of the book, you will have discovered new ideas for improving your software design skills, the relationship within your team, and the way your business works.
Table of Contents (31 chapters)
Free Chapter
Section 1
Section 2
Section 3
Section 4
Chapter 21
License: CyberDojo

Writing the Assertion First and Working Backward

In this lesson, we will write our tests in a slightly different way. When creating a new test, we will go straight to the assertion we are trying to prove. This will ensure that test code exists solely to support the assertion, thus minimizing any code written for the tests.

Once we have the assertion, we will code backward, writing the code we need to perform the assertion. Only then will we define the test name.

For example, let's look at fizzbuzz:

In order of writing:

    assert fizzBuzzed == "1"
    var fizzBuzzed = fizzBuzzer.FizzBuzz(1)
    var fizzBuzzer = new FizzBuzzer()

Final code:

    var fizzBuzzer = new FizzBuzzer() +
    var fizzBuzzed = fizzBuzzer.FizzBuzz(1) +
    assert fizzBuzzed == "1"