How can I mock API calls in Python for testing?

How can I mock API calls in Python for testing?

You can use libraries like unittest.mock or responses to mock API calls in Python. Would you like an example?

Yes, please provide an example using unittest.mock.

Sure! Here's a simple example:

from unittest.mock import patch
import requests

def get_data(url):
    response = requests.get(url)
    return response.json()

@patch('requests.get')
def test_get_data(mock_get):
    mock_get.return_value.json.return_value = {'key': 'value'}
    result = get_data('http://fakeurl.com')
    assert result == {'key': 'value'}

This mocks the requests.get method.

What about using the responses library?

With the responses library, you can mock HTTP responses easily. Here's an example:

import responses
import requests

@responses.activate
def test_get_data():
    responses.add(responses.GET, 'http://fakeurl.com', json={'key': 'value'}, status=200)
    result = requests.get('http://fakeurl.com').json()
    assert result == {'key': 'value'}

This sets up a mock response for the specified URL.