Mobile App Testing
secondsky/claude-skills
Mobile app testing with unit tests, UI automation, performance testing.
A skill your agent uses when writing, reviewing, or improving Go test code — including table-driven tests, subtests, parallel tests, test helpers, test doubles, and assertions with cmp.Diff.
$ npx skills add cxuu/golang-skills --skill go-testing -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install cxuu/golang-skills go-testing --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/cxuu/golang-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/go-testing .claude/skills/go-testing && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "go-testing" agent skill from https://github.com/cxuu/golang-skills/tree/main/skills/go-testing into .claude/skills/go-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-testing", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/cxuu/golang-skills/tree/main/skills/go-testingType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add cxuu/golang-skills --skill go-testing -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install cxuu/golang-skills go-testing --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cxuu/golang-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/go-testing .agents/skills/go-testing && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "go-testing" agent skill from https://github.com/cxuu/golang-skills/tree/main/skills/go-testing into .agents/skills/go-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-testing", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add cxuu/golang-skills --skill go-testing -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install cxuu/golang-skills go-testing --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cxuu/golang-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/go-testing .cursor/skills/go-testing && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "go-testing" agent skill from https://github.com/cxuu/golang-skills/tree/main/skills/go-testing into .cursor/skills/go-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-testing", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/cxuu/golang-skills.git --path skills/go-testing--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add cxuu/golang-skills --skill go-testing -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install cxuu/golang-skills go-testing --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cxuu/golang-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/go-testing .gemini/skills/go-testing && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "go-testing" agent skill from https://github.com/cxuu/golang-skills/tree/main/skills/go-testing into .gemini/skills/go-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-testing", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install cxuu/golang-skills go-testingInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add cxuu/golang-skills --skill go-testing -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/cxuu/golang-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/go-testing .github/skills/go-testing && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "go-testing" agent skill from https://github.com/cxuu/golang-skills/tree/main/skills/go-testing into .github/skills/go-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-testing", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add cxuu/golang-skills --skill go-testing -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install cxuu/golang-skills go-testing --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cxuu/golang-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/go-testing .opencode/skills/go-testing && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "go-testing" agent skill from https://github.com/cxuu/golang-skills/tree/main/skills/go-testing into .opencode/skills/go-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-testing", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
go-testingA skill your agent uses when writing, reviewing, or improving Go test code — including table-driven tests, subtests, parallel tests, test helpers, test doubles, and assertions with cmp.Diff.
Go Testing is an agent skill from cxuu/golang-skills. Use when writing, reviewing, or improving Go test code — including table-driven tests, subtests, parallel tests, test helpers, test doubles, and assertions with cmp.Diff. Also use when a user asks to write a test for a Go function, even if they don't mention specific patterns like table-driven tests or subtests. Does not cover benchmark performance testing (see go-performance).
Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 10 other files, including scripts, reference files and assets (for example `references/INTEGRATION.md`, `references/TABLE-DRIVEN-TESTS.md` and `references/TEST-HELPERS.md`).
It sits in Testing & QA, covering Unit testing and Load testing. The repository describes itself as: AI Agent Skills for idiomatic, production-ready Go code, distilled from Google, Uber, Community. The licence is Apache-2.0.
Read from SKILL.md and the folder at commit 91f0c2e. It shows what the files ask for, not the result of running them.
Pre-approves these tools, so the agent can use them without asking each time:
Bash(bash:*)From allowed-tools in the SKILL.md frontmatter.
Ships 1 file in scripts/ (Go and Shell), which the agent can run.
Shell commands in SKILL.md call:
goFrom the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Go Testing loads about 1.3k tokens when it runs, and up to ~6.3k if it reads all its reference files. Until then it costs about 98 tokens; SKILL.md has 490 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
The full file from cxuu/golang-skills at commit 91f0c2e, republished under its Apache-2.0 licence (© cxuu). 490 words, ~1,340 tokens.
.claude/skills/go-testing/SKILL.md (or your agent's skills folder). This skill also uses 7 other files; get the full folder from GitHub.Compatibility: Diff examples may use
github.com/google/go-cmp.
scripts/gen-table-test.sh - Run when generating a table-driven test scaffold.assets/table-test-template.go - Use as a copyable table-test starting point.references/TABLE-DRIVEN-TESTS.md - Read when choosing table tests, subtests, or parallel test patterns.references/TEST-HELPERS.md - Read when writing helpers, fixtures, cleanup, or test doubles.references/TEST-ORGANIZATION.md - Read when structuring packages, black-box tests, or larger test suites.references/VALIDATION-APIS.md - Read when choosing t.Error, t.Fatal, cmp.Diff, or assertion style.references/INTEGRATION.md - Read when testing external services, HTTP handlers, databases, or long-running setup.| Pattern | Use When |
|---|---|
t.Error | Default — report failure, keep running |
t.Fatal | Setup failed or continuing is meaningless |
cmp.Diff | Comparing structs, slices, maps, protos |
| Table-driven | Many cases share identical logic |
| Subtests | Need filtering, parallel execution, or naming |
t.Helper() | Any test helper function (call as first statement) |
t.Cleanup() | Teardown in helpers instead of defer |
Normative: Test failures must be diagnosable without reading the test source.
Every failure message must include: function name, inputs, actual (got), and
expected (want). Use the format YourFunc(%v) = %v, want %v.
// Good:
t.Errorf("Add(2, 3) = %d, want %d", got, 5)
// Bad: Missing function name and inputs
t.Errorf("got %d, want %d", got, 5)Always print got before want: got %v, want %v — never reversed.
Normative: Do not use assertion libraries. Use
cmp.Difffor complex comparisons.
if diff := cmp.Diff(want, got); diff != "" {
t.Errorf("GetPost() mismatch (-want +got):\n%s", diff)
}For protocol buffers, add protocmp.Transform() as a cmp option. Always
include the direction key (-want +got) in diff messages. Avoid comparing
JSON/serialized output — compare semantically instead.
Normative: Use
t.Errorby default to report all failures in one run. Uset.Fatalonly when continuing is impossible.
Choose t.Fatal when:
Never call t.Fatal/t.FailNow from a goroutine other than the test
goroutine — use t.Error instead.
See
assets/table-test-template.gowhen scaffolding a new table-driven test and need the canonical struct, loop, and subtest layout.
Advisory: Use table-driven tests when many cases share identical logic.
Use table tests when: all cases run the same code path with no conditional
setup, mocking, or assertions. A single shouldErr bool is acceptable.
Don't use table tests when: cases need complex setup, conditional mocking, or multiple branches — write separate test functions instead.
Key rules:
Validation: After generating or modifying tests, run
go test -run TestXxx -vto verify the tests compile and pass. Fix any compilation errors before proceeding.
Normative: Test helpers must call
t.Helper()first and uset.Cleanup()for teardown.
func setupTestDB(t *testing.T) *sql.DB {
t.Helper()
db, err := sql.Open("sqlite3", ":memory:")
if err != nil {
t.Fatalf("Could not open database: %v", err)
}
t.Cleanup(func() { db.Close() })
return db
}Advisory: Test error semantics, not error message strings.
// Bad: Brittle string comparison
if err.Error() != "invalid input" { ... }
// Good: Semantic check
if !errors.Is(err, ErrInvalidInput) { ... }For simple presence checks when specific semantics don't matter:
if gotErr := err != nil; gotErr != tt.wantErr {
t.Errorf("f(%v) error = %v, want error presence = %t", tt.input, err, tt.wantErr)
}errors.Is/errors.As or sentinel errors© cxuu, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
SKILL.md and 7 other files (scripts, references, assets) in skills/go-testing of cxuu/golang-skills.
Open the folder on GitHubat commit 91f0c2e
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in cxuu/golang-skills, which our catalogue first saw on October 7, 2026.
Go Testing next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Go Testing this skillcxuu/golang-skills | 170 | 1 repos | ~1.3k | Automated safety check: Pass | Apache-2.0 | |
| Mobile App Testingsecondsky/claude-skills | 227 | — | ~643 | Automated safety check: Pass | MIT | |
| Test Automationrevfactory/harness-100 | 1.3k | — | ~1.7k | Automated safety check: Pass | Apache-2.0 | |
| Web Testing with Playwright and Vitestwithkynam/vibecode-pro-max-kit | 1.1k | — | ~892 | Automated safety check: Pass | Apache-2.0 | |
| Test CommanderEliasOulkadi/shokunin | 114 | — | ~3k | Automated safety check: Notes | MIT | |
| API Test Suite Builderborghei/Claude-Skills | 874 | — | ~1.6k | Automated safety check: Pass | MIT |
secondsky/claude-skills
Mobile app testing with unit tests, UI automation, performance testing.
revfactory/harness-100
A full test automation pipeline. An agent skill from revfactory/harness-100.
withkynam/vibecode-pro-max-kit
Covers web testing from unit to E2E, load, visual, accessibility and security checks, with Playwright, Vitest and k6 guides plus a Playwright setup script.
EliasOulkadi/shokunin
Generate unit, integration, E2E, and visual regression tests following the Testing Trophy methodology (80% integration).
borghei/Claude-Skills
Generate API test suites from route definitions across frameworks: auth, input validation, contract, k6 load testing, mocking, and OpenAPI-driven generation.
secondsky/claude-skills
| Nuxt 4 production optimization: hydration, performance, testing with Vitest, deployment to Cloudflare/Vercel/Netlify, and v4 migration.
cxuu/golang-skills
A skill your agent uses when reviewing Go code or checking code against community style standards.
cxuu/golang-skills
A skill your agent uses when optimizing Go code, investigating slow performance, or writing performance-critical sections.
cxuu/golang-skills
A skill your agent uses when writing or reviewing documentation for Go packages, types, functions, or methods.
cxuu/golang-skills
A skill your agent uses when writing Go code that returns, wraps, or handles errors — choosing between sentinel errors, custom types, and fmt.Errorf (%w vs %v), structuring error flow, or deciding…
cxuu/golang-skills
A skill your agent uses when defining or implementing Go interfaces, designing abstractions, creating mockable boundaries for testing, or composing types through embedding.
cxuu/golang-skills
A skill your agent uses when naming any Go identifier — packages, types, functions, methods, variables, constants, or receivers — to ensure idiomatic, clear names.
Categories
A skill your agent uses when writing, reviewing, or improving Go test code — including table-driven tests, subtests, parallel tests, test helpers, test doubles, and assertions with cmp.Diff. Go Testing is an agent skill from cxuu/golang-skills.Diff.
Go Testing fits situations like: improving Go test code — including table-driven tests; assertions with cmp.Diff; A user asks to write a test for a Go function; even if they dont mention specific patterns like table-driven tests.
Run `npx skills add cxuu/golang-skills --skill go-testing -a claude-code`. Or copy the skill folder (skills/go-testing in cxuu/golang-skills) into .claude/skills/go-testing in your project. Claude Code loads it when a task matches its description.
Run `npx skills add cxuu/golang-skills --skill go-testing -a codex`. Or copy the skill folder (skills/go-testing in cxuu/golang-skills) into .agents/skills/go-testing in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add cxuu/golang-skills --skill go-testing -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/go-testing, .gemini/skills/go-testing, .github/skills/go-testing and .opencode/skills/go-testing in your project.
Going by SKILL.md and its folder, Go Testing needs Go and a shell for the scripts in its folder and the command-line tools its instructions call (go). Our summary lists: A Bash shell. Its frontmatter pre-approves these tools: Bash(bash:*).
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
Go Testing is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 1.3k tokens (SKILL.md is roughly 5.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 5k tokens, read only when the agent opens those files.
Skills that share tags, products or a category with Go Testing: Mobile App Testing (secondsky/claude-skills, 227 stars), Test Automation (revfactory/harness-100, 1.3k stars), Web Testing with Playwright and Vitest (withkynam/vibecode-pro-max-kit, 1.1k stars) and Test Commander (EliasOulkadi/shokunin, 114 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
cxuu (a GitHub user) maintains it in cxuu/golang-skills, which has 170 GitHub stars. The repository holds 20 skills in this directory. The repository was last updated on June 20, 2026.
Source: cxuu/golang-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.