Web Application Testing
anthropics/skills
Tests local web applications with Python Playwright scripts, checking frontend behavior, capturing screenshots and reading browser console logs.
Design, implement, stabilize, and review Go CLI tests across fresh command trees, pure logic, table-driven cases, streams, typed configuration, files, environment, function-backed HTTP fakes…
Install Go CLI Testing
$ npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-testing -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-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/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-testing .claude/skills/go-cli-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-cli-testing" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-testing into .claude/skills/go-cli-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-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/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-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 hashgraph-online/awesome-codex-plugins --skill go-cli-testing -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-testing --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-testing .agents/skills/go-cli-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-cli-testing" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-testing into .agents/skills/go-cli-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-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 hashgraph-online/awesome-codex-plugins --skill go-cli-testing -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-testing --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-testing .cursor/skills/go-cli-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-cli-testing" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-testing into .cursor/skills/go-cli-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-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/hashgraph-online/awesome-codex-plugins.git --path plugins/LVTD-LLC/skills/skills/go-cli-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 hashgraph-online/awesome-codex-plugins --skill go-cli-testing -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-testing --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-testing .gemini/skills/go-cli-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-cli-testing" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-testing into .gemini/skills/go-cli-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-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 hashgraph-online/awesome-codex-plugins go-cli-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 hashgraph-online/awesome-codex-plugins --skill go-cli-testing -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-testing .github/skills/go-cli-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-cli-testing" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-testing into .github/skills/go-cli-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-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 hashgraph-online/awesome-codex-plugins --skill go-cli-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 hashgraph-online/awesome-codex-plugins go-cli-testing --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-testing .opencode/skills/go-cli-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-cli-testing" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-testing into .opencode/skills/go-cli-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-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.
Facts
- Skill name
go-cli-testing- GitHub stars
- 1.2k
- Token cost
- ~999 tokens
- SKILL.md length
- 391 words
- Files
- 10 (incl. references)
- Skills in repo
- 736
- Repo updated
- First seen
- Licence
- MIT
At a glance
Design, implement, stabilize, and review Go CLI tests across fresh command trees, pure logic, table-driven cases, streams, typed configuration, files, environment, function-backed HTTP fakes…
- Works in 9 steps: Inventory success, invalid, boundary,… → Map each case to a pure, command,… → Inject arguments, streams,… → …
- Adding command tests
- SKILL.md covers Core Workflow, Read Next, Guardrails and Source Notes
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Go CLI Testing is an agent skill from hashgraph-online/awesome-codex-plugins. Design, implement, stabilize, and review Go CLI tests across fresh command trees, pure logic, table-driven cases, streams, typed configuration, files, environment, function-backed HTTP fakes, repositories, subprocesses, capability profiles, race checks, and artifact behavior. Use when adding command tests, diagnosing flaky Go tests, choosing test boundaries, or verifying human-, agent-, and CI-facing CLI contracts.
Its SKILL.md is about 1000 tokens, which your agent loads only when the skill is triggered. The skill folder holds 13 other files, including reference files (for example `agents/openai.yaml`, `guidelines.md` and `references/cli-testing/checklist.md`). Compatibility notes: Codex, Claude Code, and other Agent Skills-compatible clients.
It sits in Testing & QA. The repository describes itself as: A curated list of awesome OpenAI Codex / ChatGPT plugins, skills, and resources. The 1 Codex Marketplace. See live plugins at: https://hol.org/plugins/best-codex-plugins. The licence is MIT.
When your agent uses it
- Adding command tests
- Diagnosing flaky Go tests
- Choosing test boundaries
- Verifying human-
Example prompts
- “/go-cli-testing”
Requirements
- Compatibility (from SKILL.md): Codex, Claude Code, and other Agent Skills-compatible clients.
Workflow steps
9 steps, taken from the first numbered list in SKILL.md.
- Inventory success, invalid, boundary, dependency-failure, and cancellation behavior.
- Map each case to a pure, command, adapter, integration, or binary test.
- Inject arguments, streams, configuration, clocks, and effectful dependencies.
- Isolate files, environment, servers, repositories, ports, and subprocesses.
- Assert stdout, stderr, exit behavior, and errors according to the public contract.
- Gate live or platform-specific tests and make their changes reversible.
- Run standard, race, tagged, and relevant platform checks.
- Execute every supported build profile and smoke-test final artifacts.
- Interpret coverage gaps without treating execution as behavioral proof.
What it can do on your machine
Read from SKILL.md and the folder at commit 16b4156. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
pragprog.compkg.go.dev
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Compatibility
Codex, Claude Code, and other Agent Skills-compatible clients.
From compatibility in the SKILL.md frontmatter.
Context cost
Go CLI Testing loads about 999 tokens when it runs, and up to ~10k if it reads all its reference files. Until then it costs about 108 tokens; SKILL.md has 391 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.
Safety
Auto-check passed
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); files beside SKILL.md are not scanned.
SKILL.md
The full file from hashgraph-online/awesome-codex-plugins at commit 16b4156, republished under its MIT licence (© hashgraph-online). 391 words, ~999 tokens.
Download SKILL.mdSave it as
.claude/skills/go-cli-testing/SKILL.md (or your agent's skills folder). This skill also uses 9 other files; get the full folder from GitHub.- name
- go-cli-testing
- description
- Design, implement, stabilize, and review Go CLI tests across fresh command trees, pure logic, table-driven cases, streams, typed configuration, files, environment, function-backed HTTP fakes, repositories, subprocesses, capability profiles, race checks, and artifact behavior. Use when adding command tests, diagnosing flaky Go tests, choosing test boundaries, or verifying human-, agent-, and CI-facing CLI contracts.
- compatibility
- Codex, Claude Code, and other Agent Skills-compatible clients.
- license
- MIT
- metadata.version
- 0.4.0
- metadata.displayName
- Go CLI Testing
- metadata.category
- Go
- metadata.tags
- go,golang,cli,testing,table-tests,integration-tests,subprocess
Go CLI Testing
Test observable behavior at the narrowest boundary that proves it. Isolate every mutable resource and reserve executable tests for process-level semantics.
Core Workflow
- Inventory success, invalid, boundary, dependency-failure, and cancellation behavior.
- Map each case to a pure, command, adapter, integration, or binary test.
- Inject arguments, streams, configuration, clocks, and effectful dependencies.
- Isolate files, environment, servers, repositories, ports, and subprocesses.
- Assert stdout, stderr, exit behavior, and errors according to the public contract.
- Gate live or platform-specific tests and make their changes reversible.
- Run standard, race, tagged, and relevant platform checks.
- Execute every supported build profile and smoke-test final artifacts.
- Interpret coverage gaps without treating execution as behavioral proof.
Read Next
| Task | Load |
|---|---|
| Build or overhaul a CLI test suite | guidelines.md, workflows/test-cli-command.md |
| Stabilize a flaky asynchronous test | workflows/stabilize-flaky-test.md |
| Write focused command tests | references/cli-testing/rules.md, references/cli-testing/examples.md |
| Add subprocess, HTTP, repository, or integration tests | references/cli-testing/patterns.md |
| Review coverage, isolation, or flakiness | references/cli-testing/checklist.md |
| Choose the right test boundary | references/cli-testing/knowledge.md |
| Benchmark or profile performance | Use go-performance-testing |
Guardrails
- Do not mutate developer data or depend on fixed temporary paths and ports.
- Do not run parallel tests that replace process-global state.
- Replace timing sleeps with synchronization, deadlines, or fake clocks.
- Use
testing/synctestonly when the minimum Go version supports it and the behavior fits an isolated bubble. - Inspect wrapped errors structurally unless exact diagnostics are contractual.
- Prefer one valuable executable flow over many slow end-to-end tests.
- Construct a fresh command tree and typed configuration for every test.
- Assert both
Executeerrors and stream output.
Show full SKILL.md (135 more words)Show less
Source Notes
Guidance is transformed and paraphrased from testing material throughout Ricardo Gerardi, Powerful Command-Line Applications in Go (Pragmatic Bookshelf, 2021), especially Chapters 1-7 and 11. Examples are original.
Book: https://pragprog.com/titles/rggo/powerful-command-line-applications-in-go/
Modern test APIs should be verified against https://pkg.go.dev/testing and the current Go documentation before implementation.
Fresh command-tree, HTTP fake, configuration, and build-profile guidance also incorporates transformed material from Marian Montagnino, Building Modern CLI Applications in Go (Packt, 2023), especially Chapters 4, 6, and 11.
Subtest, coverage, parser, concurrency, HTTP server, and SQL adapter guidance also incorporates transformed material from Inanc Gumus, Go by Example: Programmer's Guide to Idiomatic and Testable Programs (Manning, 2025), Chapters 2-10.
Test categorization, race/shuffle execution, deterministic time, iotest, and
benchmark-correctness guidance also incorporates transformed material from
Teiva Harsanyi, 100 Go Mistakes and How to Avoid Them (Manning, 2022),
Chapter 11.
© hashgraph-online, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 9 other files (references) in plugins/LVTD-LLC/skills/skills/go-cli-testing of hashgraph-online/awesome-codex-plugins.
- SKILL.md
- agents/openai.yaml
- guidelines.md
- references/cli-testing/checklist.md
- references/cli-testing/examples.md
- references/cli-testing/knowledge.md
- references/cli-testing/patterns.md
- references/cli-testing/rules.md
- workflows/stabilize-flaky-test.md
- workflows/test-cli-command.md
Open the folder on GitHubat commit 16b4156
Compare with similar skills
Go CLI 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 CLI Testing this skillhashgraph-online/awesome-codex-plugins | 1.2k | — | ~999 | Automated safety check: Pass | MIT | |
| Web Application Testinganthropics/skills | 180k | 51 repos | ~966 | Automated safety check: Pass | Apache-2.0 | |
| Diagnosing Bugsfossasia/eventyay-interpretation | 1.6k | 31 repos | ~2.1k | Automated safety check: Pass | Apache-2.0 | |
| TDDfossasia/eventyay-interpretation | 1.6k | 28 repos | ~1.1k | Automated safety check: Pass | Apache-2.0 | |
| TDD WorkflowhellangleZ/burn-in-cceverywhere-ralph | 112 | 11 repos | ~2.4k | Automated safety check: Pass | None | |
| TDDsanity-io/sanity | 6.4k | 20 repos | ~1k | Automated safety check: Pass | MIT |
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Questions about Go CLI Testing
What does Go CLI Testing do?
Design, implement, stabilize, and review Go CLI tests across fresh command trees, pure logic, table-driven cases, streams, typed configuration, files, environment, function-backed HTTP fakes…. Go CLI Testing is an agent skill from hashgraph-online/awesome-codex-plugins. Design, implement, stabilize, and review Go CLI tests across fresh command trees, pure logic, table-driven cases, streams, typed configuration, files, environment, function-backed HTTP fakes, repositories, subprocesses, capability profiles, race checks, and artifact behavior.
When should I use Go CLI Testing?
Go CLI Testing fits situations like: adding command tests; diagnosing flaky Go tests; choosing test boundaries; verifying human-.
How do I install Go CLI Testing in Claude Code?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-testing -a claude-code`. Or copy the skill folder (plugins/LVTD-LLC/skills/skills/go-cli-testing in hashgraph-online/awesome-codex-plugins) into .claude/skills/go-cli-testing in your project. Claude Code loads it when a task matches its description.
How do I install Go CLI Testing in Codex?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-testing -a codex`. Or copy the skill folder (plugins/LVTD-LLC/skills/skills/go-cli-testing in hashgraph-online/awesome-codex-plugins) into .agents/skills/go-cli-testing in your project. Codex loads it when a task matches its description.
Can I use Go CLI Testing in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-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-cli-testing, .gemini/skills/go-cli-testing, .github/skills/go-cli-testing and .opencode/skills/go-cli-testing in your project.
What does Go CLI Testing need to run?
SKILL.md names no scripts, command-line tools or credentials: Go CLI Testing is instructions for the agent only. Compatibility (from SKILL.md): Codex, Claude Code, and other Agent Skills-compatible clients..
Does Go CLI Testing access the network?
SKILL.md names 2 domains. As links in the text: pragprog.com and pkg.go.dev. This is read from the text; nothing was executed.
Is Go CLI Testing safe to install?
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. Review the folder before installing.
What licence does Go CLI Testing use?
Go CLI Testing is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Go CLI Testing use?
About 999 tokens (SKILL.md is roughly 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 9.3k tokens, read only when the agent opens those files.
What are the alternatives to Go CLI Testing?
Skills that share tags, products or a category with Go CLI Testing: Web Application Testing (anthropics/skills, 180k stars), Diagnosing Bugs (fossasia/eventyay-interpretation, 1.6k stars), TDD (fossasia/eventyay-interpretation, 1.6k stars) and TDD Workflow (hellangleZ/burn-in-cceverywhere-ralph, 112 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Go CLI Testing?
hashgraph-online (a GitHub organization) maintains it in hashgraph-online/awesome-codex-plugins, which has 1,232 GitHub stars. The repository holds 736 skills in this directory. The repository was last updated on October 6, 2026.
Source: hashgraph-online/awesome-codex-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.