DRP 15 - Server

Requirements

• Python 3.8 or above
• FastAPI
• MongoDB
• Docker

Running the app locally

First download and set up MongoDB locally by following the tutorial:

https://medium.com/swlh/get-up-and-running-with-mongodb-in-under-5-minutes-abc8770b1ef8#:~:text=Open%20the%20terminal%2C%20and%20navigate,version%20and%20mongod%20%2D%2Dversion%20.

You can run the server locally as followed:

# Create a new virtual environment
python3 -m venv env 
source env/bin/activate

# Install required packages
pip3 install -r requirements.txt 

IMPORTANT: Do not use production database when running locally!

export DB_CONNECTION_STRING=<dev database connection string>

Note: When testing on local database, set it to something like

DB_CONNECTION_STRING="mongodb://127.0.0.1:27017/"

And for MongoDB Atlas, do something like

"mongodb+srv://:@cluster0.jqoga.mongodb.net/?retryWrites=true&w=majority"

uvicorn --port <port_number> --workers 8 niched.main:app
#replace <port_number> with a port number to run the web app on, different to the database's port number

Testing locally

IMPORTANT: Again, use development database as before!

Running unit tests

Unit tests should not connect to the database or communicate with the 'outside world'

# Create a new virtual environment
python3 -m venv env 
source env/bin/activate
pip3 install -r requirements.txt 
export PYTHONPATH=.

pytest --cov-report term-missing:skip-covered --cov=niched/ test/unit_tests/

When running integration tests, use dev database! You can also create your own database locally, and then connect to this database in development stage.

To create a local mongoDB, follow this guide!

# Create a new virtual environment
python3 -m venv env 
source env/bin/activate
pip3 install -r requirements.txt 
export PYTHONPATH=.
export DB_CONNECTION_STRING=<database connection string>
export DB_DATABASE="develop"

pytest --cov-report term-missing:skip-covered --cov=niched/ test/integration_tests/

For example, to run the server locally, set DB_CONNECTION_STRING to mongodb://127.0.0.1:27017/

Pytest has more options for reports, see the page for more information!

To run GitLab-CI test pipelines:

gitlab-runner exec docker unit-test
gitlab-runner exec docker integration-test