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NestJS Enterprise Backend APIs · Lesson

Database Seeding and Testing

Learn to seed your database with initial data for development and testing purposes, ensuring consistent environments.

What is Database Seeding?

Imagine starting a new project or running tests. Your database is empty! Database seeding is the process of populating a database with initial data.

This data can be anything from default user accounts to sample product listings. It's crucial for development, testing, and even for setting up a production environment with essential configuration data.

Benefits of Seeding

Seeding offers several key advantages:

  • Consistent Environments: Ensures everyone on the team, and your CI/CD pipeline, works with the same baseline data.
  • Faster Development: Developers don't waste time manually entering test data.
  • Reliable Testing: Tests run against predictable data, making results more trustworthy.
  • Easier Onboarding: New team members can quickly set up their local environment with meaningful data.

All lessons in this course

  1. Custom TypeORM Repositories
  2. Transactions and Migrations
  3. Database Seeding and Testing
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