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You're reading from  Mastering TypeScript - Fourth Edition

Product typeBook
Published inApr 2021
Reading LevelIntermediate
PublisherPackt
ISBN-139781800564732
Edition4th Edition
Languages
Typescript
Tools
Visual Studio
Concepts
Programming Language
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Author (1)
Nathan Rozentals
Nathan Rozentals
author image
Nathan Rozentals

Nathan Rozentals has been writing commercial software for over 30 years, in C, C++, Java and C#. He picked up TypeScript within a week after its initial release in October 2012 and realized how much TypeScript could help when writing JavaScript. He was one of the first people to start blogging about TypeScript, discussing early frameworks such as Backbone, Marionette, ExtJS and AngularJs. He knew he'd hit the mark when Microsoft staff started to reference his blog posts in their CodePlex discussion forums. Nathan's TypeScript solutions now control User Interfaces in IoT devices, run as stand-alone applications for Point-of-Sale solutions, provide complex application configuration web sites, and are used for mission-critical server APIs.
Read more about Nathan Rozentals

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The testing paradigm

Test-driven development (TDD) is really a way of thinking, or a paradigm if you like, that should be baked into any standard development process. This paradigm starts with tests and drives the momentum of a piece of production code through these tests. TDD means asking the question "How do I know that I have solved the problem?", instead of just "How do I solve the problem?". This is an important idea to grasp. We write code in order to solve a problem, but we should also be able to prove that we have solved the problem through the use of automated tests.

The basic steps of a test-driven approach are as follows:

  • Write a test that fails.
  • Run the test to ensure that it fails.
  • Write code to make the test pass.
  • Run the test to see that it now passes.
  • Run all tests to see that the new code does not break other tests.
  • Repeat.

Using TDD is really a mindset. Some developers follow this approach...

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Mastering TypeScript - Fourth Edition
Published in: Apr 2021Publisher: PacktISBN-13: 9781800564732
© 2021 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Nathan Rozentals

Nathan Rozentals has been writing commercial software for over 30 years, in C, C++, Java and C#. He picked up TypeScript within a week after its initial release in October 2012 and realized how much TypeScript could help when writing JavaScript. He was one of the first people to start blogging about TypeScript, discussing early frameworks such as Backbone, Marionette, ExtJS and AngularJs. He knew he'd hit the mark when Microsoft staff started to reference his blog posts in their CodePlex discussion forums. Nathan's TypeScript solutions now control User Interfaces in IoT devices, run as stand-alone applications for Point-of-Sale solutions, provide complex application configuration web sites, and are used for mission-critical server APIs.
Read more about Nathan Rozentals

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