# Coverage Analysis

> Test coverage tracking and improvement strategies. Use when analyzing test coverage. Use when this capability is needed.

- Skill: `tomevault-io/coverage-analysis-2` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/coverage-analysis-2`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/coverage-analysis-2/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/coverage-analysis-2

---


# Coverage Analysis Skill

Test coverage analysis and improvement strategies.

## When to Use

Use when analyzing or improving test coverage.

## Running Coverage

```bash
# Basic coverage
go test -cover ./...

# Generate coverage profile
go test -coverprofile=coverage.out ./...

# HTML report
go tool cover -html=coverage.out

# Function-level coverage
go tool cover -func=coverage.out
```

## Interpreting Coverage

```
github.com/user/project/service/user.go:15:   GetUser         80.0%
github.com/user/project/service/user.go:25:   CreateUser      100.0%
github.com/user/project/service/user.go:35:   DeleteUser      0.0%
total:                                         (statements)    75.5%
```

## Coverage Goals

- **70-80%** - Good baseline
- **80-90%** - Excellent
- **90%+** - Diminishing returns
- Focus on critical paths
- Don't chase 100%

## CI/CD Integration

```yaml
# GitHub Actions
- name: Test with Coverage
  run: |
    go test -v -coverprofile=coverage.out ./...
    go tool cover -func=coverage.out
```

## Best Practices

- Track coverage trends
- Cover critical paths first
- Don't ignore edge cases
- Quality over quantity

---
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<!-- tomevault:4.0:skill_md:2026-04-13 -->