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Series
In this series, I will explain why people don't write tests and why they should be doing it. Next, I'll introduce you to code testing and show how to test an Angular application.
In this article, I'll show how to test Angular directive. To test it I'll create appCloneElement directive. Its purpose is to duplicate HTML elements given n times. Setup If unsure how to set up Angular with Jest please refer to the article: https://...
In this article, I'll show how to test Angular pipes. It can be done in two different ways: directly create pipe and test output use the pipe in the component and test HTML In the example there will be created two simple pipes: trim - for trimmi...
In this article, I'll show how to set up a basic Angular app with Jest. In case of any problems please refer to the official documentation: Jest - https://jestjs.io jest-preset-angular - https://thymikee.github.io/jest-preset-angular The setup is...
Code coverage is a metric that measures what part of the tested code was executed. It's relevant because it helps to find edge cases, untested or dead code. Especially, when the application grows bigger and so does the code, these metrics become very...
The methodology This series will be based on the black box testing methodology. What does that even mean? It means that there is input data provided, then internal processing occurs (a.k.a. black box) and results are produced. The tester is not aware...
Why people don't write tests? People don't write tests for the following reasons: lack of knowledge on how to do it their code is not testable fear of being judged due to their own ignorance lack of a competent person in the team (e.g. tech lead)...