Setting Up Host Vs Device Tests

Q: What is a Claude Code skill and how does the Setting Up Host Vs Device Tests 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. Setting Up Host Vs Device Tests is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Product · Sub-category: accessibility · Last updated: 2026-05-28

Use this skill to choose between host (Robolectric/JVM) and device (instrumentation) tests for Jetpack Compose, and to configure each correctly. Covers the `androidHostTest` (a.k.a. `src/test/`) vs `androidDeviceTest` (a.k.a. `src/androidTest/`) source set split, what each flavor can and cannot drive (RenderThread, screenshots, accessibility), the `@RunWith(AndroidJUnit4::class) @Config(minSdk = 23)` setup for Robolectric, and why `Thread.sleep` is forbidden everywhere except screenshot tests waiting on the RenderThread. Use when the user reports "tests pass locally but fail on CI", asks "Robolectric vs instrumentation", mentions screenshot tests, ripple animations, accessibility checks throwing on Robolectric, or "should this test live in test/ or androidTest/".

About this skill (catalog notes)

Setting Up Host Vs Device Tests includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); a dedicated installation section; 9 code blocks for direct copy-paste. At roughly 2,129 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: Product · accessibility
Indexed related skills: 10

How Setting Up Host Vs Device Tests fits the catalog

Setting Up Host Vs Device Tests sits in the Product category under the accessibility 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 run unchanged on either Robolectric (JVM, fast, no emulator) or on a real/virtual device (full Android stack, RenderThread, accessibility). The same runComposeUiTest { setContent { … } } block compiles in both — only the underlying Looper and Choreographer differ. This skill encodes which flavor each test should live in, the Robolectric class skeleton, and the one legitimate Thread.sleep exception (screenshot tests waiting on the RenderThread).

What this skill does

Setting Up Host Vs Device Tests is a community-contributed Claude Code skill in the accessibility sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/setting-up-host-vs-device-tests/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user reports "tests pass locally but fail on CI", asks "Robolectric vs instrumentation", mentions screenshot tests, ripple animations, accessibility checks throwing on Robolectric, or "should this test live in test/ or androidTest/".

Who uses this skill

The Setting Up Host Vs Device Tests Claude Code skill is built for product managers, product designers, and cross-functional teams planning, shipping, and measuring product features. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ 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/setting-up-host-vs-device-tests
curl -L https://claudskills.com/skills/setting-up-host-vs-device-tests/SKILL.md \
  -o ~/.claude/skills/setting-up-host-vs-device-tests/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/setting-up-host-vs-device-tests/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/setting-up-host-vs-device-tests/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\setting-up-host-vs-device-tests\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 Setting Up Host Vs Device Tests Claude Code skill?

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

What does the Setting Up Host Vs Device Tests 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 Setting Up Host Vs Device Tests skill?

Use Setting Up Host Vs Device Tests when your Claude Code task falls under the Product category — specifically in the accessibility 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 Setting Up Host Vs Device Tests" or describe the task and let Claude pick). Browse related skills at /category/product/.

What is a Claude Code skill and how does the Setting Up Host Vs Device Tests 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. Setting Up Host Vs Device Tests is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/skydoves/android-testing-skills/blob/HEAD/compose/setup/setting-up-host-vs-device-tests/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). Setting Up Host Vs Device Tests [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/setting-up-host-vs-device-tests/

BibTeX

@misc{setting-up-host-vs-device-tests-2026,
  author    = {skydoves},
  title     = {Setting Up Host Vs Device Tests [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/setting-up-host-vs-device-tests/}
}

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