Property-based testing in Java with JUnit-Quickcheck – Part 2: Generators

In Part 1 of this tutorial we created a Property-based test (PBT) from a normal JUnit test with basic types. Now let us extend the domain object PostalParcel with a list of Products.

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Property-based testing in Java with JUnit-Quickcheck – Part 1: The basics

To be able to show you what Property-based testing (PBT) is, let’s start by grasping the concept of a property in programming languages. Since this is a Java tutorial, I will start with Oracle and their definition of a property in their glossary:

Characteristics of an object that users can set, such as the color of a window.

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Be carefull using UI Designs as a visual during your BDD refinements

 

The practise of Behaviour Driven Development (BDD), and using tooling to support this like cucumber, has inspired many posts and talks. The recurring questions are predominantly about how teams and people pull these tools out of its collaboration context, and bring it into the test automation context. Cucumber’s post might perhaps be one of the best on this topic,

Last year I started giving talks about BDD based on my own experiences. One pitfall that always seems to pop up, at least in the Netherlands, is about imperative versus declarative (or implementation vs intention).

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