test-coverage

A command for measuring which parts of a codebase are exercised by tests and finding untested areas. Test coverage describes how much code the test suite runs.

In plain words
What is it for?
It is for generating a coverage report, identifying low-coverage files and lines, and suggesting tests for uncovered code.
Why use it?
It shows where tests are missing so developers can focus their effort on important or risky code.

Command

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/marshall0524/everythingclaudecode/test-coverage
Clone the repo
git clone --depth 1 https://github.com/marshall0524/everythingclaudecode
Per session 5 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 427 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00005 $0.00427
Opus 5 $0.00003 $0.00214
Sonnet 5 $0.00001 $0.00085
Haiku 4.5 $0.00001 $0.00043

Measured 2d ago against content hash bb3542aeec9d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

test-coverage scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to test-coverage — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.opencode/commands/test-coverage.md · 81 lines

What it actually says

Test Coverage Command

Analyze test coverage and identify gaps: $ARGUMENTS

Your Task

  1. Run coverage report: npm test -- --coverage
  2. Analyze results - Identify low coverage areas
  3. Prioritize gaps - Critical code first
  4. Generate missing tests - For uncovered code

Coverage Targets

Code Type Target
Standard code 80%
Financial logic 100%
Auth/security 100%
Utilities 90%
UI components 70%

Coverage Report Analysis

Summary

File           | % Stmts | % Branch | % Funcs | % Lines
---------------|---------|----------|---------|--------
All files      |   XX    |    XX    |   XX    |   XX

Low Coverage Files

[Files below target, prioritized by criticality]

Uncovered Lines

[Specific lines that need tests]

Test Generation

For each uncovered area:

[Function/Component Name]

Location: src/path/file.ts:123

Coverage Gap: [description]

Suggested Tests:

describe('functionName', () => {
  it('should [expected behavior]', () => {
    // Test code
  })

  it('should handle [edge case]', () => {
    // Edge case test
  })
})

Coverage Improvement Plan

  1. Critical (add immediately)

    • file1.ts - Auth logic
    • file2.ts - Payment handling
  2. High (add this sprint)

    • file3.ts - Core business logic
  3. Medium (add when touching file)

    • file4.ts - Utilities

IMPORTANT: Coverage is a metric, not a goal. Focus on meaningful tests, not just hitting numbers.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 81 lines · 5 tokens per session scan A bb3542aeec9d

Subscribe to this mod's changes

test-coverage is a command published in the GitHub repository marshall0524/everythingclaudecode (35 stars, last pushed 1mo ago), licensed MIT. It adds 5 tokens to every session and 427 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to test-coverage, differing in 0 lines, and is treated as a copy.