Utest.h

Judgement

What it is

Developer tool

What it does

A single-header unit testing library for C and C++ with googletest-style output, test filtering and xunit XML output.

Adopt it when

You need unit tests in a plain C project, or want a test framework you can drop in as one header.

Watch out

It is a one-person project with a basic feature set.

Ready for

Usable

Runs as

Library

Built with

C and C++

How established

Established: started 11 years ago, latest release pre-ai.

What the license allows

You can take the code into anything, including a product you sell, with no conditions.

Judged on 2026-11-06 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Utest.h → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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