Book Image

Software Architecture with Python

By : Anand Balachandran Pillai
Book Image

Software Architecture with Python

By: Anand Balachandran Pillai

Overview of this book

This book starts by explaining how Python fits into an application's architecture. As you move along, you will get to grips with architecturally significant demands and how to determine them. Later, you’ll gain a complete understanding of the different architectural quality requirements for building a product that satisfies business needs, such as maintainability/reusability, testability, scalability, performance, usability, and security. You will also use various techniques such as incorporating DevOps, continuous integration, and more to make your application robust. You will discover when and when not to use object orientation in your applications, and design scalable applications. The focus is on building the business logic based on the business process documentation, and understanding which frameworks to use and when to use them. The book also covers some important patterns that should be taken into account while solving design problems, as well as those in relatively new domains such as the Cloud. By the end of this book, you will have understood the ins and outs of Python so that you can make critical design decisions that not just live up to but also surpassyour clients’ expectations.
Table of Contents (18 chapters)
Software Architecture with Python
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
Index

Understanding testability


The testability can be defined as follows:

"The degree of ease with which a software system exposes its faults through execution-based testing"

A software system with a high level of testability provides a high degree of exposure of its faults through testing, thereby giving the developers higher accessibility to the system's issues, and allowing them to find and fix bugs faster. A less testable system, on the other hand, would make it difficult for the developers to figure out issues with it, and can often lead to unexpected failures in production.

The testability is, thus, an important aspect in ensuring the quality, stability, and predictability of the software system in production.

Software testability and related attributes

A software system is testable if it gives up (exposes) its faults easily to the tester. Not only that, the system should behave in a predictable way for the tester to develop useful tests. An unpredictable system would give varying outputs to...