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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.

About this skill (catalog notes)

Structuring A Compose Test includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); a dedicated installation section; 15 code blocks for direct copy-paste. The SKILL.md runs to about 1,486 words, in the catalog's typical mid-range.

License
Apache-2.0
Original author
skydoves
Indexed lastmod
Catalog position
General · general-misc
Indexed related skills
10

How Structuring A Compose Test fits the catalog

Structuring A Compose Test sits in the General category under the general-misc 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

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 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/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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📱 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

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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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