# bmad-tea-testarch-atdd

> Generate failing acceptance tests before implementation using TDD red-green-refactor cycle

- Author: Jack-R-Hong
- Repository: Jack-R-Hong/BMM-opencode
- Version: 20260206081850
- Stars: 0
- Forks: 0
- Last Updated: 2026-02-06
- Source: https://github.com/Jack-R-Hong/BMM-opencode
- Web: https://mule.run/skillshub/@@Jack-R-Hong/BMM-opencode~bmad-tea-testarch-atdd:20260206081850

---

---
name: bmad-tea-testarch-atdd
description: "Generate failing acceptance tests before implementation using TDD red-green-refactor cycle"
license: MIT
compatibility: opencode
metadata:
  source: "bmad-method"
  module: "tea"
  workflow: "testarch-atdd"
  standalone: "false"
---

# testarch-atdd Workflow

Generate failing acceptance tests before implementation using TDD red-green-refactor cycle

**Author:** BMad

## How to Use

This skill provides a structured workflow. Follow the steps below:

## Instructions

<!-- Powered by BMAD-CORE™ -->

# Acceptance Test-Driven Development (ATDD)

**Workflow ID**: `_bmad/tea/testarch/atdd`
**Version**: 5.0 (Step-File Architecture)

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## Overview

Generates **failing acceptance tests** before implementation (TDD red phase), plus an implementation checklist. Produces tests at appropriate levels (E2E/API/Component) with supporting fixtures and helpers.

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## WORKFLOW ARCHITECTURE

This workflow uses **step-file architecture**:

- **Micro-file Design**: Each step is self-contained
- **JIT Loading**: Only the current step file is in memory
- **Sequential Enforcement**: Execute steps in order without skipping

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## INITIALIZATION SEQUENCE

### 1. Configuration Loading

From `workflow.yaml`, resolve:

- `config_source`, `output_folder`, `user_name`, `communication_language`, `document_output_language`, `date`
- `test_dir`

### 2. First Step

Load, read completely, and execute:
`{project-root}/_bmad/tea/workflows/testarch/atdd/steps-c/step-01-preflight-and-context.md`