webtest

---

Writing a WSGI app Writing a WSGI server Testing a WSGI server - http://wsgi.readthedocs.org/en/latest/learn.html Writing WSGI Middleware

Testing the whole thing:

Locally
On HTTP
Load test

Let us imagine we have a nice wsgi app. Lets imagine it is a Flask app. We want to test that the “hello world” actually returns hello world.:

>>> from flask import Flask
>>> app = Flask("myapp")
>>> wapp = app.wsgi_app

def build_environ():
    """
    We are playing at a low level with WSGI - wanting to wrap repoze.
    http://www.python.org/dev/peps/pep-0333/

    To test manually we need to generate correct HTTP Headers
    """
    import StringIO
    request_fo = StringIO.StringIO()
    err_fo = StringIO.StringIO()

    ###wsgi reqd keys and default valus
    wsgi_specific_headers = {"wsgi.version": (1,0),
                             "wsgi.url_scheme": "http",
                             "wsgi.input": request_fo,
                             "wsgi.errors": err_fo,
                             "wsgi.multithread": False,
                             "wsgi.multiprocess": False,
                             "wsgi.run_once": False
                            }

    ### key = HEADER (RFCLOC, NOTNULL, validvalues)
    HTTP_HEADERS = {"REQUEST_METHOD": "GET",
                    "SCRIPT_NAME": "module",
                    "PATH_INFO": "/cnxmodule:1234/",
                    "QUERY_STRING": "",
                    "CONTENT_TYPE": "",
                    "CONTENT_LENGTH": "",
                    "SERVER_NAME": "1.2.3.4",
                    "SERVER_PORT": "80",
                    "SERVER_PROTOCOL": "HTTP/1.1"
                    }
    d = {}
    d.update(wsgi_specific_headers)
    d.update(HTTP_HEADERS)
    return d