Choosing What To Test

Q: What is a Claude Code skill and how does the Choosing What To Test skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Choosing What To Test is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: testing · Last updated: 2026-05-28

Use this skill to pick which behaviors to cover in an Android test suite using Google's five-category state vocabulary plus the explicit "what NOT to test" list from `/training/testing/fundamentals/what-to-test`. Covers state on screen, state held in memory (ViewModels), persisted state (DB / DataStore / files), other state (system bars / system services), and errors / edge cases. Includes Google's verbatim "Tests to Avoid" list (framework entry points such as activities / fragments / services should not have business logic) and an edge-case mining checklist. Use when the user asks "what should I write tests for", "should I unit-test this Activity", "do I need a test for this util class", "what edge cases am I missing", or "should I test the ViewModel or the Composable".

About this skill (catalog notes)

Choosing What To Test includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); a dedicated installation section; pricing or quota commentary. At roughly 2,141 words the SKILL.md is on the longer end of the catalog distribution.

License: Apache-2.0
Original author: skydoves
Indexed lastmod: 2026-05-28
Catalog position: Engineering · testing
Indexed related skills: 10

How Choosing What To Test fits the catalog

Choosing What To Test sits in the Engineering category under the testing sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Android test suites under-cover business logic and over-cover framework glue. Google's /training/testing/fundamentals/what-to-test page sorts test value by what state the code touches and explicitly names the categories of tests to avoid. This skill encodes those categories and the edge-case checklist so the agent can advise concretely instead of saying "test everything important".

What this skill does

Choosing What To Test is a community-contributed Claude Code skill in the testing sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/choosing-what-to-test/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user asks "what should I write tests for", "should I unit-test this Activity", "do I need a test for this util class", "what edge cases am I missing", or "should I test the ViewModel or the Composable".

Who uses this skill

The Choosing What To Test Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 93,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/choosing-what-to-test
curl -L https://claudskills.com/skills/choosing-what-to-test/SKILL.md \
  -o ~/.claude/skills/choosing-what-to-test/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/choosing-what-to-test/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/choosing-what-to-test/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\choosing-what-to-test\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Choosing What To Test Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/choosing-what-to-test/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Choosing What To Test skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Choosing What To Test skill?

Use Choosing What To Test when your Claude Code task falls under the Engineering category — specifically in the testing area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Choosing What To Test" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the Choosing What To Test skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Choosing What To Test is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/skydoves/android-testing-skills/blob/HEAD/fundamentals/concepts/choosing-what-to-test/SKILL.md
License: Apache-2.0
Author: skydoves

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

skydoves. (2026). Choosing What To Test [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/choosing-what-to-test/

BibTeX

@misc{choosing-what-to-test-2026,
  author    = {skydoves},
  title     = {Choosing What To Test [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/choosing-what-to-test/}
}

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