Pytest with Docker - test

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examples/pytest/docker/Dockerfile

FROM python:3.7
WORKDIR /workdir
RUN pip install flask
CMD ["flask", "run", "--host", "0.0.0.0"]

examples/pytest/docker/.dockerignore

__pycache__
.git
.pytest_cache

examples/pytest/docker/test_with_docker.py

import requests
import time
import os

def setup_module():
    global image_name
    image_name = 'test_image_' + str(int(time.time()*1000))
    print(f"image: {image_name}")
    print("setup_module ", os.system(f"docker build -t {image_name} ."))

def teardown_module():
    print("teardown_module ", os.system(f"docker rmi -f {image_name}"))


def setup_function():
    global port
    global container_name

    port = '5001'
    container_name = 'test_container_' + str(int(time.time()*1000))
    print(f"container: {container_name}")
    print("setup_function ", os.system(f"docker run --rm -d -v$(pwd):/workdir -p{port}:5000 --name {container_name} {image_name}"))
    time.sleep(1) # Let the Docker container start

def teardown_function():
    print("teardown_function ", os.system(f"docker stop -t 0 {container_name}"))

def test_app():
    url = f"http://localhost:{port}/api/calc?a=3&b=10"
    print(url)
    res = requests.get(url)
    assert res.status_code == 200
    assert res.json() == {'a': 3, 'add': 13, 'b': 10}