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Edit File: test.py
import mimetypes import sys import typing as t from collections import defaultdict from datetime import datetime from datetime import timedelta from http.cookiejar import CookieJar from io import BytesIO from itertools import chain from random import random from tempfile import TemporaryFile from time import time from urllib.request import Request as _UrllibRequest from ._internal import _get_environ from ._internal import _make_encode_wrapper from ._internal import _wsgi_decoding_dance from ._internal import _wsgi_encoding_dance from .datastructures import Authorization from .datastructures import CallbackDict from .datastructures import CombinedMultiDict from .datastructures import EnvironHeaders from .datastructures import FileMultiDict from .datastructures import Headers from .datastructures import MultiDict from .http import dump_cookie from .http import dump_options_header from .http import parse_options_header from .sansio.multipart import Data from .sansio.multipart import Epilogue from .sansio.multipart import Field from .sansio.multipart import File from .sansio.multipart import MultipartEncoder from .sansio.multipart import Preamble from .urls import iri_to_uri from .urls import url_encode from .urls import url_fix from .urls import url_parse from .urls import url_unparse from .urls import url_unquote from .utils import cached_property from .utils import get_content_type from .wrappers.request import Request from .wrappers.response import Response from .wsgi import ClosingIterator from .wsgi import get_current_url if t.TYPE_CHECKING: from _typeshed.wsgi import WSGIApplication from _typeshed.wsgi import WSGIEnvironment def stream_encode_multipart( data: t.Mapping[str, t.Any], use_tempfile: bool = True, threshold: int = 1024 * 500, boundary: t.Optional[str] = None, charset: str = "utf-8", ) -> t.Tuple[t.IO[bytes], int, str]: """Encode a dict of values (either strings or file descriptors or :class:`FileStorage` objects.) into a multipart encoded string stored in a file descriptor. """ if boundary is None: boundary = f"---------------WerkzeugFormPart_{time()}{random()}" stream: t.IO[bytes] = BytesIO() total_length = 0 on_disk = False write_binary: t.Callable[[bytes], int] if use_tempfile: def write_binary(s: bytes) -> int: nonlocal stream, total_length, on_disk if on_disk: return stream.write(s) else: length = len(s) if length + total_length <= threshold: stream.write(s) else: new_stream = t.cast(t.IO[bytes], TemporaryFile("wb+")) new_stream.write(stream.getvalue()) # type: ignore new_stream.write(s) stream = new_stream on_disk = True total_length += length return length else: write_binary = stream.write encoder = MultipartEncoder(boundary.encode()) write_binary(encoder.send_event(Preamble(data=b""))) for key, value in _iter_data(data): reader = getattr(value, "read", None) if reader is not None: filename = getattr(value, "filename", getattr(value, "name", None)) content_type = getattr(value, "content_type", None) if content_type is None: content_type = ( filename and mimetypes.guess_type(filename)[0] or "application/octet-stream" ) headers = Headers([("Content-Type", content_type)]) if filename is None: write_binary(encoder.send_event(Field(name=key, headers=headers))) else: write_binary( encoder.send_event( File(name=key, filename=filename, headers=headers) ) ) while True: chunk = reader(16384) if not chunk: break write_binary(encoder.send_event(Data(data=chunk, more_data=True))) else: if not isinstance(value, str): value = str(value) write_binary(encoder.send_event(Field(name=key, headers=Headers()))) write_binary( encoder.send_event(Data(data=value.encode(charset), more_data=False)) ) write_binary(encoder.send_event(Epilogue(data=b""))) length = stream.tell() stream.seek(0) return stream, length, boundary def encode_multipart( values: t.Mapping[str, t.Any], boundary: t.Optional[str] = None, charset: str = "utf-8", ) -> t.Tuple[str, bytes]: """Like `stream_encode_multipart` but returns a tuple in the form (``boundary``, ``data``) where data is bytes. """ stream, length, boundary = stream_encode_multipart( values, use_tempfile=False, boundary=boundary, charset=charset ) return boundary, stream.read() class _TestCookieHeaders: """A headers adapter for cookielib""" def __init__(self, headers: t.Union[Headers, t.List[t.Tuple[str, str]]]) -> None: self.headers = headers def getheaders(self, name: str) -> t.Iterable[str]: headers = [] name = name.lower() for k, v in self.headers: if k.lower() == name: headers.append(v) return headers def get_all( self, name: str, default: t.Optional[t.Iterable[str]] = None ) -> t.Iterable[str]: headers = self.getheaders(name) if not headers: return default # type: ignore return headers class _TestCookieResponse: """Something that looks like a httplib.HTTPResponse, but is actually just an adapter for our test responses to make them available for cookielib. """ def __init__(self, headers: t.Union[Headers, t.List[t.Tuple[str, str]]]) -> None: self.headers = _TestCookieHeaders(headers) def info(self) -> _TestCookieHeaders: return self.headers class _TestCookieJar(CookieJar): """A cookielib.CookieJar modified to inject and read cookie headers from and to wsgi environments, and wsgi application responses. """ def inject_wsgi(self, environ: "WSGIEnvironment") -> None: """Inject the cookies as client headers into the server's wsgi environment. """ cvals = [f"{c.name}={c.value}" for c in self] if cvals: environ["HTTP_COOKIE"] = "; ".join(cvals) else: environ.pop("HTTP_COOKIE", None) def extract_wsgi( self, environ: "WSGIEnvironment", headers: t.Union[Headers, t.List[t.Tuple[str, str]]], ) -> None: """Extract the server's set-cookie headers as cookies into the cookie jar. """ self.extract_cookies( _TestCookieResponse(headers), # type: ignore _UrllibRequest(get_current_url(environ)), ) def _iter_data(data: t.Mapping[str, t.Any]) -> t.Iterator[t.Tuple[str, t.Any]]: """Iterate over a mapping that might have a list of values, yielding all key, value pairs. Almost like iter_multi_items but only allows lists, not tuples, of values so tuples can be used for files. """ if isinstance(data, MultiDict): yield from data.items(multi=True) else: for key, value in data.items(): if isinstance(value, list): for v in value: yield key, v else: yield key, value _TAnyMultiDict = t.TypeVar("_TAnyMultiDict", bound=MultiDict) 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. See explanation above. :param json: An object to be serialized and assigned to ``data``. Defaults the content type to ``"application/json"``. Serialized with the function assigned to :attr:`json_dumps`. :param environ_base: an optional dict of environment defaults. :param environ_overrides: an optional dict of environment overrides. :param charset: the charset used to encode string data. :param auth: An authorization object to use for the ``Authorization`` header value. A ``(username, password)`` tuple is a shortcut for ``Basic`` authorization. .. versionchanged:: 2.1 ``CONTENT_TYPE`` and ``CONTENT_LENGTH`` are not duplicated as header keys in the environ. .. versionchanged:: 2.0 ``REQUEST_URI`` and ``RAW_URI`` is the full raw URI including the query string, not only the path. .. versionchanged:: 2.0 The default :attr:`request_class` is ``Request`` instead of ``BaseRequest``. .. versionadded:: 2.0 Added the ``auth`` parameter. .. versionadded:: 0.15 The ``json`` param and :meth:`json_dumps` method. .. versionadded:: 0.15 The environ has keys ``REQUEST_URI`` and ``RAW_URI`` containing the path before percent-decoding. This is not part of the WSGI PEP, but many WSGI servers include it. .. versionchanged:: 0.6 ``path`` and ``base_url`` can now be unicode strings that are encoded with :func:`iri_to_uri`. """ #: the server protocol to use. defaults to HTTP/1.1 server_protocol = "HTTP/1.1" #: the wsgi version to use. defaults to (1, 0) wsgi_version = (1, 0) #: The default request class used by :meth:`get_request`. request_class = Request import json #: The serialization function used when ``json`` is passed. json_dumps = staticmethod(json.dumps) del json _args: t.Optional[MultiDict] _query_string: t.Optional[str] _input_stream: t.Optional[t.IO[bytes]] _form: t.Optional[MultiDict] _files: t.Optional[FileMultiDict] def __init__( self, path: str = "/", base_url: t.Optional[str] = None, query_string: t.Optional[t.Union[t.Mapping[str, str], str]] = None, method: str = "GET", input_stream: t.Optional[t.IO[bytes]] = None, content_type: t.Optional[str] = None, content_length: t.Optional[int] = None, errors_stream: t.Optional[t.IO[str]] = None, multithread: bool = False, multiprocess: bool = False, run_once: bool = False, headers: t.Optional[t.Union[Headers, t.Iterable[t.Tuple[str, str]]]] = None, data: t.Optional[ t.Union[t.IO[bytes], str, bytes, t.Mapping[str, t.Any]] ] = None, environ_base: t.Optional[t.Mapping[str, t.Any]] = None, environ_overrides: t.Optional[t.Mapping[str, t.Any]] = None, charset: str = "utf-8", mimetype: t.Optional[str] = None, json: t.Optional[t.Mapping[str, t.Any]] = None, auth: t.Optional[t.Union[Authorization, t.Tuple[str, str]]] = None, ) -> None: path_s = _make_encode_wrapper(path) if query_string is not None and path_s("?") in path: raise ValueError("Query string is defined in the path and as an argument") request_uri = url_parse(path) if query_string is None and path_s("?") in path: query_string = request_uri.query self.charset = charset self.path = iri_to_uri(request_uri.path) self.request_uri = path if base_url is not None: base_url = url_fix(iri_to_uri(base_url, charset), charset) self.base_url = base_url # type: ignore if isinstance(query_string, (bytes, str)): self.query_string = query_string else: if query_string is None: query_string = MultiDict() elif not isinstance(query_string, MultiDict): query_string = MultiDict(query_string) self.args = query_string self.method = method if headers is None: headers = Headers() elif not isinstance(headers, Headers): headers = Headers(headers) self.headers = headers if content_type is not None: self.content_type = content_type if errors_stream is None: errors_stream = sys.stderr self.errors_stream = errors_stream self.multithread = multithread self.multiprocess = multiprocess self.run_once = run_once self.environ_base = environ_base self.environ_overrides = environ_overrides self.input_stream = input_stream self.content_length = content_length self.closed = False if auth is not None: if isinstance(auth, tuple): auth = Authorization( "basic", {"username": auth[0], "password": auth[1]} ) self.headers.set("Authorization", auth.to_header()) if json is not None: if data is not None: raise TypeError("can't provide both json and data") data = self.json_dumps(json) if self.content_type is None: self.content_type = "application/json" if data: if input_stream is not None: raise TypeError("can't provide input stream and data") if hasattr(data, "read"): data = data.read() # type: ignore if isinstance(data, str): data = data.encode(self.charset) if isinstance(data, bytes): self.input_stream = BytesIO(data) if self.content_length is None: self.content_length = len(data) else: for key, value in _iter_data(data): # type: ignore if isinstance(value, (tuple, dict)) or hasattr(value, "read"): self._add_file_from_data(key, value) else: self.form.setlistdefault(key).append(value) if mimetype is not None: self.mimetype = mimetype @classmethod def from_environ( cls, environ: "WSGIEnvironment", **kwargs: t.Any ) -> "EnvironBuilder": """Turn an environ dict back into a builder. Any extra kwargs override the args extracted from the environ. .. versionchanged:: 2.0 Path and query values are passed through the WSGI decoding dance to avoid double encoding. .. versionadded:: 0.15 """ headers = Headers(EnvironHeaders(environ)) out = { "path": _wsgi_decoding_dance(environ["PATH_INFO"]), "base_url": cls._make_base_url( environ["wsgi.url_scheme"], headers.pop("Host"), _wsgi_decoding_dance(environ["SCRIPT_NAME"]), ), "query_string": _wsgi_decoding_dance(environ["QUERY_STRING"]), "method": environ["REQUEST_METHOD"], "input_stream": environ["wsgi.input"], "content_type": headers.pop("Content-Type", None), "content_length": headers.pop("Content-Length", None), "errors_stream": environ["wsgi.errors"], "multithread": environ["wsgi.multithread"], "multiprocess": environ["wsgi.multiprocess"], "run_once": environ["wsgi.run_once"], "headers": headers, } out.update(kwargs) return cls(**out) def _add_file_from_data( self, key: str, value: t.Union[ t.IO[bytes], t.Tuple[t.IO[bytes], str], t.Tuple[t.IO[bytes], str, str] ], ) -> None: """Called in the EnvironBuilder to add files from the data dict.""" if isinstance(value, tuple): self.files.add_file(key, *value) else: self.files.add_file(key, value) @staticmethod def _make_base_url(scheme: str, host: str, script_root: str) -> str: return url_unparse((scheme, host, script_root, "", "")).rstrip("/") + "/" @property def base_url(self) -> str: """The base URL is used to extract the URL scheme, host name, port, and root path. """ return self._make_base_url(self.url_scheme, self.host, self.script_root) @base_url.setter def base_url(self, value: t.Optional[str]) -> None: if value is None: scheme = "http" netloc = "localhost" script_root = "" else: scheme, netloc, script_root, qs, anchor = url_parse(value) if qs or anchor: raise ValueError("base url must not contain a query string or fragment") self.script_root = script_root.rstrip("/") self.host = netloc self.url_scheme = scheme @property def content_type(self) -> t.Optional[str]: """The content type for the request. Reflected from and to the :attr:`headers`. Do not set if you set :attr:`files` or :attr:`form` for auto detection. """ ct = self.headers.get("Content-Type") if ct is None and not self._input_stream: if self._files: return "multipart/form-data" if self._form: return "application/x-www-form-urlencoded" return None return ct @content_type.setter def content_type(self, value: t.Optional[str]) -> None: if value is None: self.headers.pop("Content-Type", None) else: self.headers["Content-Type"] = value @property def mimetype(self) -> t.Optional[str]: """The mimetype (content type without charset etc.) .. versionadded:: 0.14 """ ct = self.content_type return ct.split(";")[0].strip() if ct else None @mimetype.setter def mimetype(self, value: str) -> None: self.content_type = get_content_type(value, self.charset) @property def mimetype_params(self) -> t.Mapping[str, str]: """The mimetype parameters as dict. For example if the content type is ``text/html; charset=utf-8`` the params would be ``{'charset': 'utf-8'}``. .. versionadded:: 0.14 """ def on_update(d: CallbackDict) -> None: self.headers["Content-Type"] = dump_options_header(self.mimetype, d) d = parse_options_header(self.headers.get("content-type", ""))[1] return CallbackDict(d, on_update) @property def content_length(self) -> t.Optional[int]: """The content length as integer. Reflected from and to the :attr:`headers`. Do not set if you set :attr:`files` or :attr:`form` for auto detection. """ return self.headers.get("Content-Length", type=int) @content_length.setter def content_length(self, value: t.Optional[int]) -> None: if value is None: self.headers.pop("Content-Length", None) else: self.headers["Content-Length"] = str(value) def _get_form(self, name: str, storage: t.Type[_TAnyMultiDict]) -> _TAnyMultiDict: """Common behavior for getting the :attr:`form` and :attr:`files` properties. :param name: Name of the internal cached attribute. :param storage: Storage class used for the data. """ if self.input_stream is not None: raise AttributeError("an input stream is defined") rv = getattr(self, name) if rv is None: rv = storage() setattr(self, name, rv) return rv # type: ignore def _set_form(self, name: str, value: MultiDict) -> None: """Common behavior for setting the :attr:`form` and :attr:`files` properties. :param name: Name of the internal cached attribute. :param value: Value to assign to the attribute. """ self._input_stream = None setattr(self, name, value) @property def form(self) -> MultiDict: """A :class:`MultiDict` of form values.""" return self._get_form("_form", MultiDict) @form.setter def form(self, value: MultiDict) -> None: self._set_form("_form", value) @property def files(self) -> FileMultiDict: """A :class:`FileMultiDict` of uploaded files. Use :meth:`~FileMultiDict.add_file` to add new files. """ return self._get_form("_files", FileMultiDict) @files.setter def files(self, value: FileMultiDict) -> None: self._set_form("_files", value) @property def input_stream(self) -> t.Optional[t.IO[bytes]]: """An optional input stream. This is mutually exclusive with setting :attr:`form` and :attr:`files`, setting it will clear those. Do not provide this if the method is not ``POST`` or another method that has a body. """ return self._input_stream @input_stream.setter def input_stream(self, value: t.Optional[t.IO[bytes]]) -> None: self._input_stream = value self._form = None self._files = None @property def query_string(self) -> str: """The query string. If you set this to a string :attr:`args` will no longer be available. """ if self._query_string is None: if self._args is not None: return url_encode(self._args, charset=self.charset) return "" return self._query_string @query_string.setter def query_string(self, value: t.Optional[str]) -> None: self._query_string = value self._args = None @property def args(self) -> MultiDict: """The URL arguments as :class:`MultiDict`.""" if self._query_string is not None: raise AttributeError("a query string is defined") if self._args is None: self._args = MultiDict() return self._args @args.setter def args(self, value: t.Optional[MultiDict]) -> None: self._query_string = None self._args = value @property def server_name(self) -> str: """The server name (read-only, use :attr:`host` to set)""" return self.host.split(":", 1)[0] @property def server_port(self) -> int: """The server port as integer (read-only, use :attr:`host` to set)""" pieces = self.host.split(":", 1) if len(pieces) == 2: try: return int(pieces[1]) except ValueError: pass if self.url_scheme == "https": return 443 return 80 def __del__(self) -> None: try: self.close() except Exception: pass def close(self) -> None: """Closes all files. If you put real :class:`file` objects into the :attr:`files` dict you can call this method to automatically close them all in one go. """ if self.closed: return try: files = self.files.values() except AttributeError: files = () # type: ignore for f in files: try: f.close() except Exception: pass self.closed = True def get_environ(self) -> "WSGIEnvironment": """Return the built environ. .. versionchanged:: 0.15 The content type and length headers are set based on input stream detection. Previously this only set the WSGI keys. """ input_stream = self.input_stream content_length = self.content_length mimetype = self.mimetype content_type = self.content_type if input_stream is not None: start_pos = input_stream.tell() input_stream.seek(0, 2) end_pos = input_stream.tell() input_stream.seek(start_pos) content_length = end_pos - start_pos elif mimetype == "multipart/form-data": input_stream, content_length, boundary = stream_encode_multipart( CombinedMultiDict([self.form, self.files]), charset=self.charset ) content_type = f'{mimetype}; boundary="{boundary}"' elif mimetype == "application/x-www-form-urlencoded": form_encoded = url_encode(self.form, charset=self.charset).encode("ascii") content_length = len(form_encoded) input_stream = BytesIO(form_encoded) else: input_stream = BytesIO() result: "WSGIEnvironment" = {} if self.environ_base: result.update(self.environ_base) def _path_encode(x: str) -> str: return _wsgi_encoding_dance(url_unquote(x, self.charset), self.charset) raw_uri = _wsgi_encoding_dance(self.request_uri, self.charset) result.update( { "REQUEST_METHOD": self.method, "SCRIPT_NAME": _path_encode(self.script_root), "PATH_INFO": _path_encode(self.path), "QUERY_STRING": _wsgi_encoding_dance(self.query_string, self.charset), # Non-standard, added by mod_wsgi, uWSGI "REQUEST_URI": raw_uri, # Non-standard, added by gunicorn "RAW_URI": raw_uri, "SERVER_NAME": self.server_name, "SERVER_PORT": str(self.server_port), "HTTP_HOST": self.host, "SERVER_PROTOCOL": self.server_protocol, "wsgi.version": self.wsgi_version, "wsgi.url_scheme": self.url_scheme, "wsgi.input": input_stream, "wsgi.errors": self.errors_stream, "wsgi.multithread": self.multithread, "wsgi.multiprocess": self.multiprocess, "wsgi.run_once": self.run_once, } ) headers = self.headers.copy() # Don't send these as headers, they're part of the environ. headers.remove("Content-Type") headers.remove("Content-Length") if content_type is not None: result["CONTENT_TYPE"] = content_type if content_length is not None: result["CONTENT_LENGTH"] = str(content_length) combined_headers = defaultdict(list) for key, value in headers.to_wsgi_list(): combined_headers[f"HTTP_{key.upper().replace('-', '_')}"].append(value) for key, values in combined_headers.items(): result[key] = ", ".join(values) if self.environ_overrides: result.update(self.environ_overrides) return result def get_request(self, cls: t.Optional[t.Type[Request]] = None) -> Request: """Returns a request with the data. If the request class is not specified :attr:`request_class` is used. :param cls: The request wrapper to use. """ if cls is None: cls = self.request_class return cls(self.get_environ()) class ClientRedirectError(Exception): """If a redirect loop is detected when using follow_redirects=True with the :cls:`Client`, then this exception is raised. """ class Client: """This class allows you to send requests to a wrapped application. The use_cookies parameter indicates whether cookies should be stored and sent for subsequent requests. This is True by default, but passing False will disable this behaviour. If you want to request some subdomain of your application you may set `allow_subdomain_redirects` to `True` as if not no external redirects are allowed. .. versionchanged:: 2.1 Removed deprecated behavior of treating the response as a tuple. All data is available as properties on the returned response object. .. versionchanged:: 2.0 ``response_wrapper`` is always a subclass of :class:``TestResponse``. .. versionchanged:: 0.5 Added the ``use_cookies`` parameter. """ def __init__( self, application: "WSGIApplication", response_wrapper: t.Optional[t.Type["Response"]] = None, use_cookies: bool = True, allow_subdomain_redirects: bool = False, ) -> None: self.application = application if response_wrapper in {None, Response}: response_wrapper = TestResponse elif not isinstance(response_wrapper, TestResponse): response_wrapper = type( "WrapperTestResponse", (TestResponse, response_wrapper), # type: ignore {}, ) self.response_wrapper = t.cast(t.Type["TestResponse"], response_wrapper) if use_cookies: self.cookie_jar: t.Optional[_TestCookieJar] = _TestCookieJar() else: self.cookie_jar = None self.allow_subdomain_redirects = allow_subdomain_redirects def set_cookie( self, server_name: str, key: str, value: str = "", max_age: t.Optional[t.Union[timedelta, int]] = None, expires: t.Optional[t.Union[str, datetime, int, float]] = None, path: str = "/", domain: t.Optional[str] = None, secure: bool = False, httponly: bool = False, samesite: t.Optional[str] = None, charset: str = "utf-8", ) -> None: """Sets a cookie in the client's cookie jar. The server name is required and has to match the one that is also passed to the open call. """ assert self.cookie_jar is not None, "cookies disabled" header = dump_cookie( key, value, max_age, expires, path, domain, secure, httponly, charset, samesite=samesite, ) environ = create_environ(path, base_url=f"http://{server_name}") headers = [("Set-Cookie", header)] self.cookie_jar.extract_wsgi(environ, headers) def delete_cookie( self, server_name: str, key: str, path: str = "/", domain: t.Optional[str] = None, secure: bool = False, httponly: bool = False, samesite: t.Optional[str] = None, ) -> None: """Deletes a cookie in the test client.""" self.set_cookie( server_name, key, expires=0, max_age=0, path=path, domain=domain, secure=secure, httponly=httponly, samesite=samesite, ) def run_wsgi_app( self, environ: "WSGIEnvironment", buffered: bool = False ) -> t.Tuple[t.Iterable[bytes], str, Headers]: """Runs the wrapped WSGI app with the given environment. :meta private: """ if self.cookie_jar is not None: self.cookie_jar.inject_wsgi(environ) rv = run_wsgi_app(self.application, environ, buffered=buffered) if self.cookie_jar is not None: self.cookie_jar.extract_wsgi(environ, rv[2]) return rv def resolve_redirect( self, response: "TestResponse", buffered: bool = False ) -> "TestResponse": """Perform a new request to the location given by the redirect response to the previous request. :meta private: """ scheme, netloc, path, qs, anchor = url_parse(response.location) builder = EnvironBuilder.from_environ( response.request.environ, path=path, query_string=qs ) to_name_parts = netloc.split(":", 1)[0].split(".") from_name_parts = builder.server_name.split(".") if to_name_parts != [""]: # The new location has a host, use it for the base URL. builder.url_scheme = scheme builder.host = netloc else: # A local redirect with autocorrect_location_header=False # doesn't have a host, so use the request's host. to_name_parts = from_name_parts # Explain why a redirect to a different server name won't be followed. if to_name_parts != from_name_parts: if to_name_parts[-len(from_name_parts) :] == from_name_parts: if not self.allow_subdomain_redirects: raise RuntimeError("Following subdomain redirects is not enabled.") else: raise RuntimeError("Following external redirects is not supported.") path_parts = path.split("/") root_parts = builder.script_root.split("/") if path_parts[: len(root_parts)] == root_parts: # Strip the script root from the path. builder.path = path[len(builder.script_root) :] else: # The new location is not under the script root, so use the # whole path and clear the previous root. builder.path = path builder.script_root = "" # Only 307 and 308 preserve all of the original request. if response.status_code not in {307, 308}: # HEAD is preserved, everything else becomes GET. if builder.method != "HEAD": builder.method = "GET" # Clear the body and the headers that describe it. if builder.input_stream is not None: builder.input_stream.close() builder.input_stream = None builder.content_type = None builder.content_length = None builder.headers.pop("Transfer-Encoding", None) return self.open(builder, buffered=buffered) def open( self, *args: t.Any, buffered: bool = False, follow_redirects: bool = False, **kwargs: t.Any, ) -> "TestResponse": """Generate an environ dict from the given arguments, make a request to the application using it, and return the response. :param args: Passed to :class:`EnvironBuilder` to create the environ for the request. If a single arg is passed, it can be an existing :class:`EnvironBuilder` or an environ dict. :param buffered: Convert the iterator returned by the app into a list. If the iterator has a ``close()`` method, it is called automatically. :param follow_redirects: Make additional requests to follow HTTP redirects until a non-redirect status is returned. :attr:`TestResponse.history` lists the intermediate responses. .. versionchanged:: 2.1 Removed the ``as_tuple`` parameter. .. versionchanged:: 2.0 ``as_tuple`` is deprecated and will be removed in Werkzeug 2.1. Use :attr:`TestResponse.request` and ``request.environ`` instead. .. versionchanged:: 2.0 The request input stream is closed when calling ``response.close()``. Input streams for redirects are automatically closed. .. versionchanged:: 0.5 If a dict is provided as file in the dict for the ``data`` parameter the content type has to be called ``content_type`` instead of ``mimetype``. This change was made for consistency with :class:`werkzeug.FileWrapper`. .. versionchanged:: 0.5 Added the ``follow_redirects`` parameter. """ request: t.Optional["Request"] = None if not kwargs and len(args) == 1: arg = args[0] if isinstance(arg, EnvironBuilder): request = arg.get_request() elif isinstance(arg, dict): request = EnvironBuilder.from_environ(arg).get_request() elif isinstance(arg, Request): request = arg if request is None: builder = EnvironBuilder(*args, **kwargs) try: request = builder.get_request() finally: builder.close() response = self.run_wsgi_app(request.environ, buffered=buffered) response = self.response_wrapper(*response, request=request) redirects = set() history: t.List["TestResponse"] = [] if not follow_redirects: return response while response.status_code in { 301, 302, 303, 305, 307, 308, }: # Exhaust intermediate response bodies to ensure middleware # that returns an iterator runs any cleanup code. if not buffered: response.make_sequence() response.close() new_redirect_entry = (response.location, response.status_code) if new_redirect_entry in redirects: raise ClientRedirectError( f"Loop detected: A {response.status_code} redirect" f" to {response.location} was already made." ) redirects.add(new_redirect_entry) response.history = tuple(history) history.append(response) response = self.resolve_redirect(response, buffered=buffered) else: # This is the final request after redirects. response.history = tuple(history) # Close the input stream when closing the response, in case # the input is an open temporary file. response.call_on_close(request.input_stream.close) return response def get(self, *args: t.Any, **kw: t.Any) -> "TestResponse": """Call :meth:`open` with ``method`` set to ``GET``.""" kw["method"] = "GET" return self.open(*args, **kw) def post(self, *args: t.Any, **kw: t.Any) -> "TestResponse": """Call :meth:`open` with ``method`` set to ``POST``.""" kw["method"] = "POST" return self.open(*args, **kw) def put(self, *args: t.Any, **kw: t.Any) -> "TestResponse": """Call :meth:`open` with ``method`` set to ``PUT``.""" kw["method"] = "PUT" return self.open(*args, **kw) def delete(self, *args: t.Any, **kw: t.Any) -> "TestResponse": """Call :meth:`open` with ``method`` set to ``DELETE``.""" kw["method"] = "DELETE" return self.open(*args, **kw) def patch(self, *args: t.Any, **kw: t.Any) -> "TestResponse": """Call :meth:`open` with ``method`` set to ``PATCH``.""" kw["method"] = "PATCH" return self.open(*args, **kw) def options(self, *args: t.Any, **kw: t.Any) -> "TestResponse": """Call :meth:`open` with ``method`` set to ``OPTIONS``.""" kw["method"] = "OPTIONS" return self.open(*args, **kw) def head(self, *args: t.Any, **kw: t.Any) -> "TestResponse": """Call :meth:`open` with ``method`` set to ``HEAD``.""" kw["method"] = "HEAD" return self.open(*args, **kw) def trace(self, *args: t.Any, **kw: t.Any) -> "TestResponse": """Call :meth:`open` with ``method`` set to ``TRACE``.""" kw["method"] = "TRACE" return self.open(*args, **kw) def __repr__(self) -> str: return f"<{type(self).__name__} {self.application!r}>" def create_environ(*args: t.Any, **kwargs: t.Any) -> "WSGIEnvironment": """Create a new WSGI environ dict based on the values passed. The first parameter should be the path of the request which defaults to '/'. The second one can either be an absolute path (in that case the host is localhost:80) or a full path to the request with scheme, netloc port and the path to the script. This accepts the same arguments as the :class:`EnvironBuilder` constructor. .. versionchanged:: 0.5 This function is now a thin wrapper over :class:`EnvironBuilder` which was added in 0.5. The `headers`, `environ_base`, `environ_overrides` and `charset` parameters were added. """ builder = EnvironBuilder(*args, **kwargs) try: return builder.get_environ() finally: builder.close() def run_wsgi_app( app: "WSGIApplication", environ: "WSGIEnvironment", buffered: bool = False ) -> t.Tuple[t.Iterable[bytes], str, Headers]: """Return a tuple in the form (app_iter, status, headers) of the application output. This works best if you pass it an application that returns an iterator all the time. Sometimes applications may use the `write()` callable returned by the `start_response` function. This tries to resolve such edge cases automatically. But if you don't get the expected output you should set `buffered` to `True` which enforces buffering. If passed an invalid WSGI application the behavior of this function is undefined. Never pass non-conforming WSGI applications to this function. :param app: the application to execute. :param buffered: set to `True` to enforce buffering. :return: tuple in the form ``(app_iter, status, headers)`` """ # Copy environ to ensure any mutations by the app (ProxyFix, for # example) don't affect subsequent requests (such as redirects). environ = _get_environ(environ).copy() status: str response: t.Optional[t.Tuple[str, t.List[t.Tuple[str, str]]]] = None buffer: t.List[bytes] = [] def start_response(status, headers, exc_info=None): # type: ignore nonlocal response if exc_info: try: raise exc_info[1].with_traceback(exc_info[2]) finally: exc_info = None response = (status, headers) return buffer.append app_rv = app(environ, start_response) close_func = getattr(app_rv, "close", None) app_iter: t.Iterable[bytes] = iter(app_rv) # when buffering we emit the close call early and convert the # application iterator into a regular list if buffered: try: app_iter = list(app_iter) finally: if close_func is not None: close_func() # otherwise we iterate the application iter until we have a response, chain # the already received data with the already collected data and wrap it in # a new `ClosingIterator` if we need to restore a `close` callable from the # original return value. else: for item in app_iter: buffer.append(item) if response is not None: break if buffer: app_iter = chain(buffer, app_iter) if close_func is not None and app_iter is not app_rv: app_iter = ClosingIterator(app_iter, close_func) status, headers = response # type: ignore return app_iter, status, Headers(headers) class TestResponse(Response): """:class:`~werkzeug.wrappers.Response` subclass that provides extra information about requests made with the test :class:`Client`. Test client requests will always return an instance of this class. If a custom response class is passed to the client, it is subclassed along with this to support test information. If the test request included large files, or if the application is serving a file, call :meth:`close` to close any open files and prevent Python showing a ``ResourceWarning``. .. versionchanged:: 2.2 Set the ``default_mimetype`` to None to prevent a mimetype being assumed if missing. .. versionchanged:: 2.1 Removed deprecated behavior for treating the response instance as a tuple. .. versionadded:: 2.0 Test client methods always return instances of this class. """ default_mimetype = None # Don't assume a mimetype, instead use whatever the response provides request: Request """A request object with the environ used to make the request that resulted in this response. """ history: t.Tuple["TestResponse", ...] """A list of intermediate responses. Populated when the test request is made with ``follow_redirects`` enabled. """ # Tell Pytest to ignore this, it's not a test class. __test__ = False def __init__( self, response: t.Iterable[bytes], status: str, headers: Headers, request: Request, history: t.Tuple["TestResponse"] = (), # type: ignore **kwargs: t.Any, ) -> None: super().__init__(response, status, headers, **kwargs) self.request = request self.history = history self._compat_tuple = response, status, headers @cached_property def text(self) -> str: """The response data as text. A shortcut for ``response.get_data(as_text=True)``. .. versionadded:: 2.1 """ return self.get_data(as_text=True)