Class EnvironBuilder

src/werkzeug/test.py:178–764

This class can be used to conveniently create a WSGI environment for testing purposes. It can be used to quickly create WSGI environments or request objects from arbitrary data. The signature of this class is also used in some other places as of Werkzeug 0.5 (:func:`create_environ`

class EnvironBuilder:
    """This class can be used to conveniently create a WSGI environment
    for testing purposes.  It can be used to quickly create WSGI environments
    or request objects from arbitrary data.

    The signature of this class is also used in some other places as of
    Werkzeug 0.5 (:func:`create_environ`, :meth:`Response.from_values`,
    :meth:`Client.open`).  Because of this most of the functionality is
    available through the constructor alone.

    Files and regular form data can be manipulated independently of each
    other with the :attr:`form` and :attr:`files` attributes, but are
    passed with the same argument to the constructor: `data`.

    `data` can be any of these values:

    -   a `str` or `bytes` object: The object is converted into an
        :attr:`input_stream`, the :attr:`content_length` is set and you have to
        provide a :attr:`content_type`.
    -   a `dict` or :class:`MultiDict`: The keys have to be strings. The values
        have to be either any of the following objects, or a list of any of the
        following objects:

        -   a :class:`file`-like object:  These are converted into
            :class:`FileStorage` objects automatically.
        -   a `tuple`:  The :meth:`~FileMultiDict.add_file` method is called
            with the key and the unpacked `tuple` items as positional
            arguments.
        -   a `str`:  The string is set as form data for the associated key.
    -   a file-like object: The object content is loaded in memory and then
        handled like a regular `str` or a `bytes`.

    :param path: the path of the request.  In the WSGI environment this will
                 end up as `PATH_INFO`.  If the `query_string` is not defined
                 and there is a question mark in the `path` everything after
                 it is used as query string.
    :param base_url: the base URL is a URL that is used to extract the WSGI
                     URL scheme, host (server name + server port) and the
                     script root (`SCRIPT_NAME`).
    :param query_string: an optional string or dict with URL parameters.
    :param method: the HTTP method to use, defaults to `GET`.
    :param input_stream: an optional input stream.  Do not specify this and
                         `data`.  As soon as an input stream is set you can't
                         modify :attr:`args` and :attr:`files` unless you
                         set the :attr:`input_stream` to `None` again.
    :param content_type: The content type for the request.  As of 0.5 you
                         don't have to provide this when specifying files
                         and form data via `data`.
    :param content_length: The content length for the request.  You don't
                           have to specify this when providing data via
                           `data`.
    :param errors_stream: an optional error stream that is used for
                          `wsgi.errors`.  Defaults to :data:`stderr`.
    :param multithread: controls `wsgi.multithread`.  Defaults to `False`.
    :param multiprocess: controls `wsgi.multiprocess`.  Defaults to `False`.
    :param run_once: controls `wsgi.run_once`.  Defaults to `False`.
    :param headers: an optional list or :class:`Headers` object of headers.
    :param data: a string or dict of form data or a file-object.