A Java library for automating data setup in unit tests.

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What is it?

Instancio is a library for instantiating and populating objects with random data, making your tests more dynamic. Each test run is against a new set of inputs.

Why use it?

The goal is to reduce the time and lines of code spent on manual data setup in unit tests, and potentially to uncover bugs that may have gone unnoticed with static test data.

How does it work?

Instancio uses reflection to populate objects, including nested objects and collections. A single method call provides you with a fully populated instance of a class, ready to be used as an input to your test case.