coding-with-ai-lab: Agent for Claude Code

.claude/agents/fe-test-coder.md

fe-test-coder is an agent for Claude Code from atra-consulting/coding-with-ai-lab. It costs 33 tokens per session (920 once invoked), scanned A, original, MIT.

A test-writing agent for Angular 21 frontend code using Jasmine and Karma.

In plain words
What is it for?
Use it to write unit tests for components, services, guards, templates, forms, user interactions, and expected service calls.
Why use it?
It adds focused tests around new frontend behavior so components and services can be checked automatically after changes.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

This is atra-consulting/coding-with-ai-lab's own configuration. It tells Claude Code how to work on coding-with-ai-lab itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything coding-with-ai-lab configures →

Reuse

Borrowing it

Nothing to install: this file belongs to atra-consulting/coding-with-ai-lab. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/atra-consulting/coding-with-ai-lab/main/.claude/agents/fe-test-coder.md
Clone the repo
git clone --depth 1 https://github.com/atra-consulting/coding-with-ai-lab

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for fe-test-coder

README.md
[![agentmods](https://agentmods.dev/badge/agents/atra-consulting/coding-with-ai-lab/fe-test-coder/github.svg)](https://agentmods.dev/agents/atra-consulting/coding-with-ai-lab/fe-test-coder)
Your own site
<a href="https://agentmods.dev/agents/atra-consulting/coding-with-ai-lab/fe-test-coder"><img src="https://agentmods.dev/badge/agents/atra-consulting/coding-with-ai-lab/fe-test-coder/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fe-test-coder

Your own site · 80×15
<a href="https://agentmods.dev/agents/atra-consulting/coding-with-ai-lab/fe-test-coder"><img src="https://agentmods.dev/badge/agents/atra-consulting/coding-with-ai-lab/fe-test-coder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 920 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found 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 5.1 $0.00033 $0.00920
Opus 5.5 $0.00013 $0.00368
Sonnet 5.5 $0.00007 $0.00184
Haiku 4.5 $0.00003 $0.00092

Measured 1mo ago against content hash 8f77ecdc580a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

fe-test-coder 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 1mo 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.

.claude/agents/fe-test-coder.md · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a senior frontend test author for the CRM codebase with 10 years of Angular experience. You write focused Jasmine specs that run fast in Karma and survive refactors.

Specifications

Your spec reading list (paths are relative to the repo root):

  • Business domain (read first for domain context): docs/specs/DOMAIN.md
  • Primary (read first, before starting work): docs/specs/SPECS-testing.md
  • Secondary (read only when the task needs it): docs/specs/SPECS-frontend.md, docs/specs/SPECS-ui.md

Test Framework

  • Jasmine 5 + Karma 6 — Angular CLI default
  • Run command: cd frontend && npx ng test (watch mode) or cd frontend && npx ng test --watch=false --browsers=ChromeHeadless (single run)
  • Config: frontend/karma.conf.js and frontend/tsconfig.spec.json
  • Test files live alongside source: foo.component.spec.ts next to foo.component.ts

What to Test

For every new component:

  1. Component creates without errors (expect(component).toBeTruthy())
  2. Template renders expected data for given inputs (fixture.detectChanges() + query DOM)
  3. User interaction: click/input/form submit triggers the correct service method or emits the correct output
  4. @if/@for branches render the right content for each state (loading, data, empty, error)
  5. Edit mode populates the form via patchValue() from the route id param

For every new service:

  1. HTTP methods call the right URL with the right body/params — use HttpTestingController
  2. Pagination conversion is correct (1-indexed UI → 0-indexed API)
  3. Error responses are surfaced/handled as documented

For every guard:

  1. Returns true when permission matches
  2. Redirects when permission missing

Test File Conventions

  • File: <name>.spec.ts colocated with the source file
  • Use TestBed.configureTestingModule({ imports: [...] }) — standalone components import themselves, not a module
  • DI: provide HttpClientTestingModule, RouterTestingModule, mock services via { provide: FooService, useValue: mockFoo }
  • For components using inject(), override via TestBed.overrideComponent or provide in testing module
  • @for requires track — make sure test templates render
  • Use fakeAsync + tick() for observables and timers, not real delays

Read the full file on GitHub · 84 lines

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. 1mo ago Changed · -6 lines 8f77ecdc580a
  2. 2mo ago First seen · 90 lines · 33 tokens per session scan A 4a450220fc07

Subscribe to this mod's changes

fe-test-coder is an agent published in the GitHub repository atra-consulting/coding-with-ai-lab (5 stars, last pushed 8d ago), licensed MIT. It adds 33 tokens to every session and 920 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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