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Structuring A Compose Test

Category: General  ·  Sub-category: general-misc  ·  Last updated:
Use this skill to structure a Jetpack Compose UI test class the way androidx itself writes them — `@MediumTest` + `@RunWith(AndroidJUnit4::class)`, a single `createComposeRule(StandardTestDispatcher())` rule, hoisted `mutableStateOf` declared above `setContent { }`, and the Test → Find → Assert → Act → Re-assert flow. Covers when to use `createAndroidComposeRule<MyActivity>()` for custom Activities, how to drive state from outside the composition via `runOnIdle { }`, why state must NOT be hoisted inside `setContent`, and why `@get:Rule createComposeRule()` and `runComposeUiTest { }` MUST NOT both appear in the same test. Use when the developer asks "how do I write a Compose test", "where do I declare state", "how do I name the test class", "MediumTest vs LargeTest", "rule.setContent inside @Before", or shows a test class that won't compile or doesn't drive state from outside.
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From the source SKILL.md

Compose tests fail or rot because their structure is wrong, not because the assertions are wrong. State that lives inside setContent { } cannot be driven from the test thread; setContent called inside @Before becomes a hidden race; combining @get:Rule with runComposeUiTest { } creates two competing test environments. This skill encodes the exact class skeleton used by androidx.compose.material3 and androidx.compose.foundation so the developer's tests behave the same way.

What this skill does

Structuring A Compose Test is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/structuring-a-compose-test/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the developer asks "how do I write a Compose test", "where do I declare state", "how do I name the test class", "MediumTest vs LargeTest", "rule.setContent inside @Before", or shows a test class that won't compile or doesn't drive state from outside.

Who uses this skill

The Structuring A Compose Test Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 159,000+ 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/structuring-a-compose-test
curl -L https://claudskills.com/skills/structuring-a-compose-test/SKILL.md \
  -o ~/.claude/skills/structuring-a-compose-test/SKILL.md

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

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

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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 →

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One-click install via the desktop app

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Frequently asked questions

How do I install the Structuring A Compose Test Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/structuring-a-compose-test/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Structuring A Compose Test skill do?
Use this skill to structure a Jetpack Compose UI test class the way androidx itself writes them — `@MediumTest` + `@RunWith(AndroidJUnit4::class)`, a single `createComposeRule(StandardTestDispatcher())` rule, hoisted `mutableStateOf` declared above `setContent { }`, and the Test → Find → Assert → Act → Re-assert flow. Covers when to use `createAndroidComposeRule<MyActivity>()` for custom Activities, how to drive state from outside the composition via `runOnIdle { }`, why state must NOT be hoisted inside `setContent`, and why `@get:Rule createComposeRule()` and `runComposeUiTest { }` MUST NOT both appear in the same test. Use when the developer asks "how do I write a Compose test", "where do I declare state", "how do I name the test class", "MediumTest vs LargeTest", "rule.setContent inside @Before", or shows a test class that won't compile or doesn't drive state from outside.
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 Structuring A Compose Test skill?
Use Structuring A Compose Test when your Claude Code task falls under the General category — specifically in the general misc 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 Structuring A Compose Test" or describe the task and let Claude pick). Browse related skills at /category/general/.
What is a Claude Code skill and how does the Structuring A Compose 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. Structuring A Compose Test is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

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

APA
skydoves. (2026). Structuring A Compose Test [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/structuring-a-compose-test/
BibTeX
@misc{structuring-a-compose-test-2026,
  author    = {skydoves},
  title     = {Structuring A Compose Test [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/structuring-a-compose-test/}
}

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Security scan

Grade A · scanned 2026-07-24 — free static scan against the OWASP Agentic Skills Top 10.

The scan flagged 1 of 10 categories (filesystem), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.

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