Skills: Automated Testing Skills

---
name: test-generator
description: "Auto-generate unit tests"
triggers:
  - keyword: "generate-test"
tools:
  - Read
  - Grep
  - Glob
  - Write
---

## Generation Flow
1. Read source file, analyze function signatures and logic
2. Identify boundary conditions and exception paths
3. Write to create test file
4. Bash to run tests for verification

## Diagnosis Flow
1. Read failed test output
2. Locate failed assertions and error stacks
3. Read related source code
4. Analyze failure cause
5. Output diagnosis report and fix suggestions

# Source code
def divide(a: float, b: float) -> float:
    if b == 0:
        raise ValueError("Division by zero")
    return a / b

# Auto-generated tests
def test_divide_normal():
    assert divide(10, 2) == 5.0

def test_divide_negative():
    assert divide(-10, 2) == -5.0

def test_divide_zero():
    with pytest.raises(ValueError):
        divide(10, 0)

def test_divide_float():
    assert divide(7, 2) == 3.5

# Python
pytest --cov=src --cov-report=term-missing

# JavaScript
npx jest --coverage

# Go
go test -coverprofile=coverage.out ./...

Coverage Report
├── Total coverage: 72%
├── Uncovered files:
│   ├── src/auth/__init__.py (0%) ← Entry file, needs testing
│   ├── src/utils/validators.py (45%) ← Some functions untested
│   └── src/api/routes.py (60%) ← Error handling not covered
└── Suggestion: Prioritize adding tests for validators.py

---
name: tdd-assistant
description: "TDD assistant: write tests first, then implement"
triggers:
  - keyword: "tdd"
tools:
  - Read
  - Write
  - Edit
  - Bash
---

## TDD Flow
1. Understand requirements
2. Write failing test (RED)
3. Bash to confirm test fails
4. Edit to write minimal implementation (GREEN)
5. Bash to confirm test passes
6. Edit to refactor and optimize (REFACTOR)
7. Bash to confirm tests still pass