Test Coverage Analysis

by sd0xdev

Test Coverage Analysis is a Quality skill for Claude Code, published by sd0xdev in sd0x-dev-flow.

188 stars24 forkson sd0xdev/sd0x-dev-flowAdded 2026/09/06Repository updated 2026/09/05

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agent-harnessclaude-codeclaude-code-plugincodexharness-engineeringskills

Install in seconds

Install Test Coverage Analysis

Copy Test Coverage Analysis into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/sd0xdev/sd0x-harness/tree/main/skills/check-coverage ~/.claude/skills/check-coverage

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/sd0xdev/sd0x-harness.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/check-coverage/SKILL.md in sd0xdev/sd0x-dev-flow
Installs to: ~/.claude/skills/check-coverage
Collection: One of 25 skills cataloged from this repository
Category: Quality — 1745 skills

What Test Coverage Analysis does

Test Coverage Analysis assesses unit, integration, and E2E coverage for a feature and identifies missing cases. Use it to map source files to tests, find gaps, and recommend new tests.

Test Coverage Analysis is cataloged under Quality on DirSkills. Test Coverage Analysis comes from a repository tagged agent-harness, claude-code, claude-code-plugin, codex and harness-engineering.

Documentation

README

Excerpt

Test Coverage Analysis

Trigger

Keywords: check coverage, test coverage, coverage analysis, coverage gaps, check-coverage

When NOT to Use

Test sufficiency review via Codex (use /codex-test-review)
Generating tests (use /codex-test-gen)
Running tests (use /verify)

Parent Skill Reference

See @skills/test-review/SKILL.md for Codex-based test review workflow.

Agent Dispatch

Agent({
  description: "Assess three-layer test coverage and identify gaps",
  subagent_type: "coverage-analyst",
  prompt: `Assess Unit / Integration / E2E test coverage for the feature docs at: $ARGUMENTS
Follow the steps defined in this skill.`
})

Task

Step 1: Read Feature Documentation

This is the opening of the README. Read the full README on GitHub.

Commands Test Coverage Analysis provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

/codex-test-review
/codex-test-gen
/verify

Frequently asked about Test Coverage Analysis

What else does sd0xdev publish alongside Test Coverage Analysis?
Test Coverage Analysis is one of 25 skills that DirSkills catalogs from sd0xdev/sd0x-dev-flow, the repository it ships in. Its siblings there include Adr, Architecture Design and Ask. Each one is a separate skill with its own page in this directory, installs the same way Test Coverage Analysis does, and is maintained by sd0xdev in that same repository. The rest of the collection is listed on the sd0xdev/sd0x-dev-flow page.
How does Test Coverage Analysis compare to other Quality skills?
Test Coverage Analysis ranks #1627 by stars among the 1745 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Test Coverage Analysis against them. Open each page to compare what they document and how they install.