How did you ensure testing environments and infrastructure at your previous workplace?

The following approaches are typically used to ensure test environments and infrastructure:

• Environment isolation: creating separate configurations for development, testing, and production with different database settings, services, and environment variables.

• Containerization: using Docker for quick deployment of test services and databases, which makes it easy to create and destroy test environments.

• CI/CD integration: automating the running of tests and deployment of test environments through continuous integration systems (e.g., Jenkins, GitLab CI).

• Mocking external services: using mocks or stubs for integration tests to avoid dependency on real external APIs.

• Using in-memory databases or test databases for unit and integration tests to avoid affecting real data.

Example: a separate PostgreSQL database in a Docker container was used for testing, which was started before tests and removed afterward.