How can I use Docker Compose for API testing?

How can I use Docker Compose for API testing?

You can use Docker Compose to define and run multi-container Docker applications, which is great for API testing. You can set up your API service along with any dependencies like databases in a single configuration file.

Can you show me a sample docker-compose.yml file for an API?

Sure! Here's a simple example:

version: '3'
services:
  api:
    image: my-api-image
    ports:
      - '3000:3000'
    environment:
      - NODE_ENV=test
  db:
    image: postgres
    environment:
      - POSTGRES_USER=user
      - POSTGRES_PASSWORD=pass

How do I run the tests after setting it up?

You can run your tests by executing docker-compose up to start the services, and then run your test command in a separate terminal or as part of your CI/CD pipeline.

What if I need to run tests in a specific order?

You can define dependencies in your docker-compose.yml file using the depends_on option to control the startup order of your services.