description: Execute spec tasks using TDD methodology argument-hint: [feature-name] # Execute Spec Tasks with TDD Execute implementation tasks from spec using Kent Beck's Test-Driven Development methodology. ## Arguments: [feature-name] Tool policy: Use Cursor file tools (read_file/list_dir/glob_file_search/apply_patch/edit_file); no shell. ## Current Specs Available specs: Discover via list_dir/glob_file_search under `{{KIRO_DIR}}/specs/` ## Instructions ### Help Mode (--help) If arguments contain "--help", show usage: ``` /kiro/spec-impl [feature-name] Examples: /kiro/spec-impl auth-system 1.1 # Execute task 1.1 /kiro/spec-impl auth-system 1,2,3 # Execute tasks 1, 2, 3 /kiro/spec-impl auth-system --all # Execute all pending tasks ``` ### Pre-Execution Validation Feature name: Parse first token of `[feature-name]` argument Validate required files exist: - Requirements: Check `{{KIRO_DIR}}/specs/[feature-name]/requirements.md` via read_file - Design: Check `{{KIRO_DIR}}/specs/[feature-name]/design.md` via read_file - Tasks: Check `{{KIRO_DIR}}/specs/[feature-name]/tasks.md` via read_file - Metadata: Check `{{KIRO_DIR}}/specs/[feature-name]/spec.json` via read_file ### Context Loading **Load all required content before execution:** **Core Steering:** - Structure: `{{KIRO_DIR}}/steering/structure.md` - Tech Stack: `{{KIRO_DIR}}/steering/tech.md` - Product: `{{KIRO_DIR}}/steering/product.md` **Custom Steering:** Additional files: Discover via list_dir/glob_file_search in `{{KIRO_DIR}}/steering` excluding `structure.md`, `tech.md`, `product.md` **Spec Documents:** Feature directory: Parse from `[feature-name]` argument - Requirements: `{{KIRO_DIR}}/specs/[feature-name]/requirements.md` - Design: `{{KIRO_DIR}}/specs/[feature-name]/design.md` - Tasks: `{{KIRO_DIR}}/specs/[feature-name]/tasks.md` **Note**: [feature-name] will be replaced with actual feature name during execution ### Task Execution 1. **Parse feature name and task numbers** from arguments 2. **Load all context** (steering + spec documents) 3. **Extract checkboxes** from tasks.md: Read file and parse `- [ ]` / `- [x]` lines programmatically (no shell) 4. **Execute each checkbox** using TDD methodology directly ### For Each Task Checkbox Execute using TDD methodology directly: **Implementation Steps:** 1. **Load Project Context** (read these files first): - Structure: `{{KIRO_DIR}}/steering/structure.md` - Tech Stack: `{{KIRO_DIR}}/steering/tech.md` - Product: `{{KIRO_DIR}}/steering/product.md` - Custom steering files: Discover via list_dir/glob_file_search in `{{KIRO_DIR}}/steering` excluding `structure.md`, `tech.md`, `product.md` - Spec Metadata: `{{KIRO_DIR}}/specs/[feature-name]/spec.json` - Requirements: `{{KIRO_DIR}}/specs/[feature-name]/requirements.md` - Design: `{{KIRO_DIR}}/specs/[feature-name]/design.md` - All Tasks: `{{KIRO_DIR}}/specs/[feature-name]/tasks.md` 2. **TDD Implementation** for each specific task: - **RED**: Write failing tests first - **GREEN**: Write minimal code to pass tests - **REFACTOR**: Clean up and improve code structure 3. **Task Completion**: - Verify all tests pass - Update checkbox from `- [ ]` to `- [x]` in `{{KIRO_DIR}}/specs/[feature-name]/tasks.md` - Ensure no regressions in existing tests **For each task:** - Extract exact checkbox content from tasks.md - Follow Kent Beck's TDD methodology strictly - Implement only the specific task requirements - Maintain code quality and test coverage ## Implementation Logic 1. **Parse Arguments**: - Feature name: First argument - Task numbers: Second argument (support: "1", "1,2,3", "--all") 2. **Validate**: - Spec directory exists - Required files (requirements.md, design.md, tasks.md, spec.json) exist - Spec is approved for implementation 3. **Execute**: - **Load all file contents** into memory first - **Build complete context** for implementation - **Execute each task sequentially** using TDD methodology - Each task implementation receives complete project knowledge ## Error Handling - Spec not found: Run /kiro/spec-init first - Not approved: Complete spec workflow first - Task failure: Keep checkbox unchecked, show error ## Success Metrics - All selected checkboxes marked [x] in tasks.md - Tests pass - No regressions