test-data
Generate realistic test data with Faker, create database seeds, manage fixtures, and build factory patterns.
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- ThinkfleetAI/thinkfleet-engine
- 최근 소스 활동
- 2026년 2월 1일 16:21
- 감지된 SKILL.md 언어
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SKILL.md
소스 지침 · 읽기 전용 미리보기- name
- test-data
- description
- Generate realistic test data with Faker, create database seeds, manage fixtures, and build factory patterns.
- metadata
- {"thinkfleetbot":{"emoji":"🎲","requires":{"anyBins":"[Truncated]"}}}
# Test Data Generation
Generate realistic test data for development, testing, and demos.
## Faker (Python)
```bash
# Quick generation
python3 -c "
from faker import Faker
import json
fake = Faker()
users = [{'name': fake.name(), 'email': fake.email(), 'phone': fake.phone_number(), 'address': fake.address(), 'company': fake.company()} for _ in range(10)]
print(json.dumps(users, indent=2))
"
# Generate CSV
python3 -c "
from faker import Faker
import csv, sys
fake = Faker()
w = csv.writer(sys.stdout)
w.writerow(['name','email','phone','joined'])
for _ in range(100):
w.writerow([fake.name(), fake.email(), fake.phone_number(), fake.date_between('-2y','today')])
" > test_users.csv
# Locale-specific data
python3 -c "
from faker import Faker
fake = Faker('en_US')
print(fake.name(), fake.zipcode(), fake.state())
fake_jp = Faker('ja_JP')
print(fake_jp.name(), fake_jp.address())
"
# Seeded (reproducible)
python3 -c "
from faker import Faker
fake = Faker()
Faker.seed(42)
print(fake.name()) # Always same result
"
```
## Faker (JavaScript)
```bash
# Generate JSON test data
node -e "
const { faker } = require('@faker-js/faker');
const users = Array.from({length: 10}, () => ({
id: faker.string.uuid(),
name: faker.person.fullName(),
email: faker.internet.email(),
avatar: faker.image.avatar(),
createdAt: faker.date.past().toISOString(),
}));
console.log(JSON.stringify(users, null, 2));
"
```
## Database Seeding
### PostgreSQL
```bash
# Generate and insert directly
python3 -c "
from faker import Faker
fake = Faker()
Faker.seed(42)
for i in range(100):
name = fake.name().replace(\"'\", \"''\")
email = fake.email()
print(f\"INSERT INTO users (name, email, created_at) VALUES ('{name}', '{email}', '{fake.date_between('-1y', 'today')}');\")
" | psql $DATABASE_URL
```
### JSON fixtures
```bash
# Generate fixture file
python3 -c "
from faker import Faker
import json
fake = Faker()
Faker.seed(42)
data = {
'users': [{'id': i, 'name': fake.name(), 'email': fake.email()} for i in range(1, 21)],
'posts': [{'id': i, 'user_id': fake.random_int(1, 20), 'title': fake.sentence(), 'body': fake.paragraph()} for i in range(1, 51)],
'comments': [{'id': i, 'post_id': fake.random_int(1, 50), 'user_id': fake.random_int(1, 20), 'text': fake.sentence()} for i in range(1, 101)]
}
print(json.dumps(data, indent=2))
" > fixtures/test_data.json
```
## Specific Data Types
```bash
python3 -c "
from faker import Faker
fake = Faker()
# Financial
print('CC:', fake.credit_card_number())
print('IBAN:', fake.iban())
print('Price:', fake.pricetag())
# Technical
print('IP:', fake.ipv4())
print('MAC:', fake.mac_address())
print('UA:', fake.user_agent())
print('URL:', fake.url())
# Content
print('Paragraph:', fake.paragraph())
print('BS:', fake.bs())
print('Job:', fake.job())
# Dates
print('Past:', fake.date_between('-1y', 'today'))
print('Future:', fake.date_between('today', '+1y'))
"
```
## Notes
- Always use `Faker.seed()` for reproducible test data in CI.
- Install: `pip install faker` or `npm install @faker-js/faker`.
- Never use Faker-generated data that looks like real PII in production databases.
- For load testing, generate data in bulk and import via COPY/bulk insert, not row-by-row INSERT.
- JSON fixtures are portable across test frameworks. Store them in `fixtures/` or `test/data/`.
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