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react-native-harness

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by callstackincubator · part of callstackincubator/react-native-harness

Write and debug React Native Harness tests for app code. Use when the user asks to create or fix tests that import from react-native-harness, mock modules, spy…

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🧰 Not standalone. This skill ships with callstackincubator/react-native-harness and only works together with that tool — install the tool first, then add this skill.

Write and debug React Native Harness tests for app code. Use when the user asks to create or fix tests that import from react-native-harness, mock modules, spy…

Inspect the full instructions your agent will receiveExpand

This is the exact playbook injected into your agent when the skill activates — shown here so you can audit it before installing. You don't need to read it to use the skill.

name: react-native-harness description: Write and debug React Native Harness tests for app code. Use when the user asks to create or fix tests that import from react-native-harness, mock modules, spy on functions, render React Native components on-device, use setupFiles or setupFilesAfterEnv, or add optional UI tests with @react-native-harness/ui.

Router only. Private setup before using this skill:

Copy & paste — that's it
harness --version

Require react-native-harness >= 1.3.0-rc.1; older CLIs lack these skill commands. If older, run npm install -g react-native-harness@latest, recheck, then continue. If you cannot upgrade, stop and tell the user. Do not include version or upgrade commands in final plans.

Before your first Harness command or plan, read the version-matched CLI guide:

Copy & paste — that's it
harness skill get core

If you need more details on Harness, see the available CLI skill guides:

Copy & paste — that's it
harness skill list

Load additional skills via harness skill get <name> when needed.

Use this skill only to route into version-matched CLI guidance. Let the installed CLI skill files provide exact workflow guidance, API usage, and current test-writing rules.