The Complete Unit Testing Collection [Tutorials and Frameworks]

Breaking Unit Testing Down

• Introduction and History of Unit Testing [Part 1] by Leah Grantz — We all know we should be incorporating unit testing into our development processes, but do you know the history of this concept? We take a look into the history of test automation to get a look at where this all got started.
• Unit Testing Guidelines: What to Test and What Not to Test by Anton Angelov — Unit testing can often take on a rather broad connotation. We try to help narrow down the phrase in terms of what it should (and shouldn't) cover.
• Importance of Unit Testing by Bala Murugan — Unit testing is one of the simplest and first measures that developers should take to prevent bugs in production.
• The Role of Unit Tests in Test Automation by Bobby Lalvani — Because TDD and AAA complement each other so well, you should combine them with test management tools to get the best results on your DevOps test automation projects.
• Why Do We Unit Test? And What’s the Purpose of Code Coverage? by Kevin Hooke — Use code coverage as a tool to help you find untested code, not as an ultimate goal.
• 8 Benefits of Unit Testing by Ekaterina Novoseltseva — You simply can't overlook the benefits of tearing your application apart, testing each, and putting it all back together.

Writing Unit Tests

• 10 Tips to Writing Good Unit Tests by Grzegorz Ziemoński — A good test suite can make your life easier by making you feel safe when changing your code; a bad test suite can make you miserable and waste a ton of your time.
• Best Practices for Writing Unit Tests by Jonathan Danylko — Do you know when it's time to write unit tests? Today, we try to provide insight on best practices for how (and when) to write unit tests.
• Writing Your F.I.R.S.T Unit Tests by Dan Newton — First-class developers write their code test-first using FIRST. Tests should be fast, independent, repeatable, self-validating, and timely.

Unit Testing Tools Written In...

Java

• Unit Testing With Mockito by Sukumar Kuppuswamy — Learn how to write effective unit tests with the Mockito framework as part of Test-Driven Development.
• Unit Testing With Apache Camel by Jitendra Bafna — Learn how to write unit test cases for Camel routes while taking advantage of its Java library and camel-test module to test your routes and integrations.
• How to Write Great Unit Tests With JUnit: Major Features of JUnit 4 by Dilini Rajapaksha — This tutorial teaches the essentials of writing readable, maintainable unit tests in JUnit, covering the four main features with examples of each.
• Intro to Unit Testing in Java With JUnit5 Library by Yuri Mednikov — Check out this post to learn more about Java unit testing with JUnit 5.

JavaScript

• Unit Testing in Angular 4 Using Jasmine and Karma - Part 1 by Debasis Saha — Learn about the logistics and necessity of unit testing and learn how Jasmine and Karma work together to accomplish this in Angular 4 applications.
• Unit Testing in Angular 4 Using Jasmine and Karma - Part 2 by Debasis Saha — Learn how to develop unit tests for Angular 4 components, directives, and services in part 2 of this tutorial series.
• Unit Testing With JS Promise by Venkatraman Ramamoorthy — Learn about executing unit testing for JavaScript with JS Promise, which can help you work with asynchronous operations more smoothly.
• Unit Testing Self-Invoking JavaScript Functions by Bendix Saeltz — Using QUnit and Sinon.js achieves the possibility of unit testing — and using the Google closure compiler with hard optimization enabled minifies code efficiently.

.NET Core and .NET

• How to Write Unit Tests for a .NET Core Application by Dhananjay Kumar — In this post, we take a look at how to create effective unit tests in a .NET Core application. This tutorial will help you learn by doing.
• Unit Testing With .NET Core by Jeremy Morgan — This tutorial will show .NET Core developers how to easily build and perform unit testing on this mature framework.

C, C++, and C#

• Unit Testing With C++: The How and the Why by Eric Goebelbecker — Learn the inner workings of unit testing with C++ and why it's so important.
• Unit Testing With Entity Framework and Entity Framework Core 2.1 by Paul Michaels — Learn how to write unit tests for data access for use with the In-Memory Database setting in Entity Framework Core 2.1.
• Most Complete NUnit Unit Testing Framework Cheat Sheet by Anton Angelov — This ''cheat sheet'' will help you get started with NUnit for unit testing .NET applications by getting familiar with its syntax.

Unit Testing Best and Worst Practices

Patterns and Anti-Patterns

• The Deadly Sins of Unit Testing — Part 1 by Erik Dietrich — These seven habits make for bad unit testing. Make sure you're not falling into these traps.
• The Deadly Sins of Unit Testing — Part 2 by Leah Grantz — Sloth, envy, and lust...learn how to spot and avoid slow dependencies, greedy algorithms, and inappropriate intimacy code smells to improve your unit tests.
• The Anatomy of Good Unit Testing by Jason Fauchelle — Here is a collection of thoughts and tid-bits that the author finds useful when writing tests (with examples in C#).
• Unit Testing: The Good, Bad, and Ugly by Ayush Prashar — We may not enjoy unit testing, but it's essential to software quality. Let's explore the importance and workings of unit testing.
• Unit Testing Anti-Patterns — Full List by Yegor Bugayenko — Let's take a look at anti-patterns to avoid when it comes to unit testing.

Some Words of Advice

• Handling Noisy Unit Test Suites by Arthur Hicken — Learn automation strategies to clean up your test suite of unit tests that fail, but have never been fixed for one reason or another.
• Java Unit Testing Best Practices: How to Get the Most Out of Your Test Automation by Brian McGlauflin — Following these best practices can make unit testing a quick and easy way to verify that your software is functional.
• Single-Statement Unit Tests by Yegor Bugayenko — The biggest benefit of this principle is that tests become declarative and object-oriented instead of being algorithmic, imperative, and procedural.
• Unit Testing: Indispensable by Rajesh Raj — Skipping unit testing can be dangerous. See why and learn how to start integrating it into your DevOps development process.
• Avoiding Common Hurdles in Unit Testing by William Riley-Land — Take a look at these tips for better mocking, mocking modules, code coverage, error handling, and more.

Implementation: Putting Unit Testing to the Test

The Business Case for Unit Testing

• The Business Case for Unit Testing — Part 1 by Erik Dietrich — Want to learn more about the importance of unit testing for businesses and dev teams? Check out this post to learn more about the necessity of unit testing.
• The Business Case for Unit Testing — Part 2 by Erik Dietrich — Learn more reasons that unit testing isn't just good for developers or testers — it's good for the business as a whole.
• Implementing Unit Testing: Goals by Gil Zilberfeld — This series talks about creating a sound unit testing strategy; the first thing to think about it your goals. Read on for some pointers.
• Implementing Unit Testing: Outcomes by Gil Zilberfeld — It's good to have goals, but this chapter in the series talks about outcomes- how to know that you're on track to achieve those goals.

Unit Testing ♥s DevOps

• CI/CD Pipelines to Run Unit Testing in Docker [Video] by Mohamed Radwan — This video demonstrates how to run unit tests within a Docker container and explains some of the intricacies of a Dockerfile.
• How Does Unit Testing Fit Into the DevOps World? by Erik Dietrich — See how unit tests form an important part of a DevOps process when you apply test automation to operations and deployment.
• Unit Testing and DevOps by Arthur Freyman — Unit tests are arguably mandatory. Get a comprehensive overview of libraries, tools, and strategies for DevOps unit testing.
• Go With Flow: Unit Testing, DevOps, and the Mainframe by Jason Bloomberg — Here are some insights into where Agile, DevOps, and some of their associated approaches like Flow Agile and CI/CD combine for better synergy.
• Unit Testing and Test Automation: Two Things You're Not Doing Enough Of by Erik Dietrich and RJ Williams — Unit testing, testing automation, quality assurance: all things work together for the good of your software. And your Scrum Master's mental health.

For the Devs

• Living in a ‘More Data, More Problems’ World With Unit Tests by Glenn Everitt — Unit testing in a world of increased data can become a bit unwieldy. Take a look at what that means and how your automated testing can cope with this reality.
• Improving C# Code Using Refactoring and Unit Testing by Ngoc Minh Tran — If you're hoping to improve your code quality, learn to use several refactoring and unit testing methods to turn bad code into beautiful code with these steps.

Unit Testing Questions and Considerations

• Unit Testing: The Myth of Complete Isolation by Grzegorz Ziemoński — The notion that unit tests should be performed in complete isolation is a myth. We should use isolation to our advantage, wherever it makes our tests more manageable.
• How Much Unit Testing Is Enough? by Erik Dietrich and RJ Williams — Teams want the benefits of unit testing while losing as little precious time to it as possible. How can we find that delicate balance?
• Why Do Programmers Fail to Write Good Unit Tests? by Leah Grantz — There is debate about what makes a good unit test. Since no one's perfect, here's how to make a good unit test, and more about why you should bother.
• Why Your Team Needs to Start Unit Testing Right Now by Eli Lopian — You have a well-established, experienced team. So why look for issues? Read on to find out why unit testing is still important!
• Why Do You Need to Unit Test If You Have a QA Team? by Erik Dietrich — This introduction to the need for unit testing shows the difference between unit testing and QA, and why you need people dedicated to both.
• The Five Stages to Unit Testing Enlightenment by Said Aspen — Namaste.
• To Unit Test or Not to Unit Test? by Alfredo Pinto — Get some insight on the importance of unit tests and well-organized software architecture.
• Unit Testing vs. Integration Testing: What's the Difference? by Leah Grantz — Let's help clarify the differences between unit testing and integration testing and look at what each of them means and how they come together.

Related Collections

Your Guide to Automated Testing [Articles and Tutorials]

The Complete CI/CD Collection [Tutorials]