testing

name	testing
description	Guides ccusage Rust and Node tests. Use when adding or fixing cargo tests, Node test files, CLI snapshots, Claude model pricing, LiteLLM compatibility, or fixture-backed tests.

ccusage Testing

The tdd skill owns the Red-Green-Refactor loop and the focused runner commands. This skill owns what is specific to ccusage: fixtures, adapter coverage, pricing and model behavior, snapshots, CLI output, and package tooling.

• Prefer behavior-focused tests over schema-shape tests, unless schema normalization itself is the behavior under test.
• Branching behavior belongs in separate tests or table-driven cases rather than an if inside a test body.
• Skipped local-data smoke tests are acceptable when real user log directories catch schema drift, as long as they pass on clean CI machines.

Rust

Unit tests sit next to the module they exercise in #[cfg(test)] mod tests. When a large module is split, its tests move with the code instead of staying in main.rs.

Read references/rust.md for fixtures, snapshots, pricing, and model names.

Node

Read references/node-test.md. Node covers only the package launcher and the Nix-side JS tooling; production CLI runtime behavior is tested in Rust.