cmdtest Posts

A collection of my posts on cmdtest. Whether I'm trying to build something new or figure out how to break it, these notes, fixes, and deep dives document my process. I hope you find them useful.

• Migrating cmdtest from Zig 0.15 to 0.16

  June 23, 2026

  The Zig 0.16 release brought a complete I/O system redesign. Here is my experience migrating cmdtest, including the new Child process API, file operations, and what I had to learn along the way.

• Memory Allocation in Zig: Reading stdout

  November 17, 2025

  Working on cmdtest, my Zig CLI testing tool, I ran into the problem of reading stdio from long-lived processes. This is my dive into why memory allocation is key for handling program output.

• cmdtest v0.2.0

  November 7, 2025

  I'm sharing my experience building cmdtest, a Zig package for testing CLI apps. This post covers Zig I/O, comptime vs runtime, and build.zig import quirks.