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Clean Architecture in Python

Application Configuration and Integration Tests

Explore configuring application settings with Docker Compose and conducting integration tests using MongoDB within a clean architecture framework. Understand how to manage ports, environment variables, and test case adjustments to support multiple databases in Python applications.

We'll cover the following...

Application configuration

Docker Compose, the testing framework, and the application itself are configured through a single JSON file that we need to update with the actual values we want to use for MongoDB.

JavaScript (JSX)
[
  {
    "name": "FLASK_ENV",
    "value": "production"
  },
  {
    "name": "FLASK_CONFIG",
    "value": "testing"
  },
  {
    "name": "POSTGRES_DB",
    "value": "postgres"
  },
  {
    "name": "POSTGRES_USER",
    "value": "postgres"
  },
  {
    "name": "POSTGRES_HOSTNAME",
    "value": "localhost"
  },
  {
    "name": "POSTGRES_PORT",
    "value": "5433"
  },
  {
    "name": "POSTGRES_PASSWORD",
    "value": "postgres"
  },
  {
    "name": "MONGODB_USER",
    "value": "root"
  },
  {
    "name": "MONGODB_HOSTNAME",
    "value": "localhost"
  },
  {
    "name": "MONGODB_PORT",
    "value": "27018"
  },
  {
    "name": "MONGODB_PASSWORD",
    "value": "mongodb"
  },
  {
    "name": "APPLICATION_DB",
    "value": "test"
  }
]

Since the standard port for MongoDB is 27017, we choose 27018 for the tests in our example. In a real scenario, ...