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README.md

echo

Echo is a fully configurable mock server, TCP chaos monkey proxy and an HTTP callback recorder. It is perfect to test external services.

The Echo make extensive use of Python context managers. This make it easy to controlling Echo on the fly from your code or using your testing framework setup mechanism.

The main part of Echo is an HTTP server with an REST API, the Echo HTTP server have a lot of flexibility and support many start up methods.

Echo server can be run as:

  • A standalone using echo command line tool.
  • A WSGI HTTP Server application.
  • A Docker instance container.

Mock

import echo


mock_response = {
    'status_code': 200,
    'body': {...},
}

request_contain = {
    'body': {...}
}

expectation = {
    'method': 'POST',
    'path': '/v1/users/',
    'request': request_contain,
    'response': mock_response,
}

with echo.mock(**expectation) as client:
    response = client.post()
    response.status_code == 200

Proxy

import settings


expectation = {
    'backend': 'google.com:80',
    'behaviour': {'20:delay': {'before': True, 'sleep': 1}},
    'protocol': {'http': {'buffer': 8124, 'keep_alive': False,
                          'overwrite_host_header': True,
                          'reuse_socket': False}}
}

with echo.proxy(**expectation) as proxy:
    settings.external_service_url = proxy.url
    proxy.post()

callback

import requests


with echo.callback() as webhook:
    settings.callback_url = webhook.url
    requests.post()
    webhook.wait_callback(timeout=10)
    webhook.response.data == {...}