requests-mock-flask

requests-mock-flask helps with testing Flask applications with httpretty, responses or requests-mock.

• Installation
• Usage example
• Use cases
• Full documentation

Installation

Requires Python 3.9+.

pip install requests-mock-flask

Usage example

import flask
import requests
import responses
import requests_mock

from requests_mock_flask import add_flask_app_to_mock

app = flask.Flask(__name__)

@app.route('/')
def _() -> str:
    return 'Hello, World!'

@responses.activate
def test_responses_decorator() -> None:
    """
    It is possible to use the helper with a ``responses`` decorator.
    """
    add_flask_app_to_mock(
        mock_obj=responses,
        flask_app=app,
        base_url='http://www.example.com',
    )

    response = requests.get('http://www.example.com')

    assert response.status_code == 200
    assert response.text == 'Hello, World!'

def test_responses_context_manager() -> None:
    """
    It is possible to use the helper with a ``responses`` context manager.
    """
    with responses.RequestsMock(
        assert_all_requests_are_fired=False,
    ) as resp_m:
        add_flask_app_to_mock(
            mock_obj=resp_m,
            flask_app=app,
            base_url='http://www.example.com',
        )

        response = requests.get('http://www.example.com')

    assert response.status_code == 200
    assert response.text == 'Hello, World!'

def test_requests_mock_context_manager() -> None:
    """
    It is possible to use the helper with a ``requests_mock`` context
    manager.
    """
    with requests_mock.Mocker() as resp_m:
        add_flask_app_to_mock(
            mock_obj=resp_m,
            flask_app=app,
            base_url='http://www.example.com',
        )

        response = requests.get('http://www.example.com')

    assert response.status_code == 200
    assert response.text == 'Hello, World!'

def test_requests_mock_adapter() -> None:
    """
    It is possible to use the helper with a ``requests_mock`` adapter.
    """
    session = requests.Session()
    adapter = requests_mock.Adapter()
    session.mount('mock', adapter)

    add_flask_app_to_mock(
        mock_obj=adapter,
        flask_app=app,
        base_url='mock://www.example.com',
    )

    response = session.get('mock://www.example.com')

    assert response.status_code == 200
    assert response.text == 'Hello, World!'

@httpretty.activate
def test_httpretty_decorator() -> None:
    """
    It is possible to use the helper with HTTPretty.
    """
    add_flask_app_to_mock(
        mock_obj=httpretty,
        flask_app=app,
        base_url='http://www.example.com',
    )

    response = requests.get('http://www.example.com')

    assert response.status_code == 200
    assert response.text == 'Hello, World!'

Use cases

• Use requests or other Python APIs for testing Flask applications.
• Create a test suite which can test a Flask application as well as a live web application, to make a verified fake.
• Test a service which calls a Flask application that you have the source code for.

Full documentation

See the full documentation for more information including how to contribute.