299 lines
9.9 KiB
Python
299 lines
9.9 KiB
Python
from __future__ import annotations
|
|
|
|
import importlib.metadata
|
|
import typing as t
|
|
from contextlib import contextmanager
|
|
from contextlib import ExitStack
|
|
from copy import copy
|
|
from types import TracebackType
|
|
from urllib.parse import urlsplit
|
|
|
|
import werkzeug.test
|
|
from click.testing import CliRunner
|
|
from click.testing import Result
|
|
from werkzeug.test import Client
|
|
from werkzeug.wrappers import Request as BaseRequest
|
|
|
|
from .cli import ScriptInfo
|
|
from .sessions import SessionMixin
|
|
|
|
if t.TYPE_CHECKING: # pragma: no cover
|
|
from _typeshed.wsgi import WSGIEnvironment
|
|
from werkzeug.test import TestResponse
|
|
|
|
from .app import Flask
|
|
|
|
|
|
class EnvironBuilder(werkzeug.test.EnvironBuilder):
|
|
"""An :class:`~werkzeug.test.EnvironBuilder`, that takes defaults from the
|
|
application.
|
|
|
|
:param app: The Flask application to configure the environment from.
|
|
:param path: URL path being requested.
|
|
:param base_url: Base URL where the app is being served, which
|
|
``path`` is relative to. If not given, built from
|
|
:data:`PREFERRED_URL_SCHEME`, ``subdomain``,
|
|
:data:`SERVER_NAME`, and :data:`APPLICATION_ROOT`.
|
|
:param subdomain: Subdomain name to append to :data:`SERVER_NAME`.
|
|
:param url_scheme: Scheme to use instead of
|
|
:data:`PREFERRED_URL_SCHEME`.
|
|
:param json: If given, this is serialized as JSON and passed as
|
|
``data``. Also defaults ``content_type`` to
|
|
``application/json``.
|
|
:param args: other positional arguments passed to
|
|
:class:`~werkzeug.test.EnvironBuilder`.
|
|
:param kwargs: other keyword arguments passed to
|
|
:class:`~werkzeug.test.EnvironBuilder`.
|
|
"""
|
|
|
|
def __init__(
|
|
self,
|
|
app: Flask,
|
|
path: str = "/",
|
|
base_url: str | None = None,
|
|
subdomain: str | None = None,
|
|
url_scheme: str | None = None,
|
|
*args: t.Any,
|
|
**kwargs: t.Any,
|
|
) -> None:
|
|
assert not (base_url or subdomain or url_scheme) or (
|
|
base_url is not None
|
|
) != bool(subdomain or url_scheme), (
|
|
'Cannot pass "subdomain" or "url_scheme" with "base_url".'
|
|
)
|
|
|
|
if base_url is None:
|
|
http_host = app.config.get("SERVER_NAME") or "localhost"
|
|
app_root = app.config["APPLICATION_ROOT"]
|
|
|
|
if subdomain:
|
|
http_host = f"{subdomain}.{http_host}"
|
|
|
|
if url_scheme is None:
|
|
url_scheme = app.config["PREFERRED_URL_SCHEME"]
|
|
|
|
url = urlsplit(path)
|
|
base_url = (
|
|
f"{url.scheme or url_scheme}://{url.netloc or http_host}"
|
|
f"/{app_root.lstrip('/')}"
|
|
)
|
|
path = url.path
|
|
|
|
if url.query:
|
|
path = f"{path}?{url.query}"
|
|
|
|
self.app = app
|
|
super().__init__(path, base_url, *args, **kwargs)
|
|
|
|
def json_dumps(self, obj: t.Any, **kwargs: t.Any) -> str:
|
|
"""Serialize ``obj`` to a JSON-formatted string.
|
|
|
|
The serialization will be configured according to the config associated
|
|
with this EnvironBuilder's ``app``.
|
|
"""
|
|
return self.app.json.dumps(obj, **kwargs)
|
|
|
|
|
|
_werkzeug_version = ""
|
|
|
|
|
|
def _get_werkzeug_version() -> str:
|
|
global _werkzeug_version
|
|
|
|
if not _werkzeug_version:
|
|
_werkzeug_version = importlib.metadata.version("werkzeug")
|
|
|
|
return _werkzeug_version
|
|
|
|
|
|
class FlaskClient(Client):
|
|
"""Works like a regular Werkzeug test client but has knowledge about
|
|
Flask's contexts to defer the cleanup of the request context until
|
|
the end of a ``with`` block. For general information about how to
|
|
use this class refer to :class:`werkzeug.test.Client`.
|
|
|
|
.. versionchanged:: 0.12
|
|
`app.test_client()` includes preset default environment, which can be
|
|
set after instantiation of the `app.test_client()` object in
|
|
`client.environ_base`.
|
|
|
|
Basic usage is outlined in the :doc:`/testing` chapter.
|
|
"""
|
|
|
|
application: Flask
|
|
|
|
def __init__(self, *args: t.Any, **kwargs: t.Any) -> None:
|
|
super().__init__(*args, **kwargs)
|
|
self.preserve_context = False
|
|
self._new_contexts: list[t.ContextManager[t.Any]] = []
|
|
self._context_stack = ExitStack()
|
|
self.environ_base = {
|
|
"REMOTE_ADDR": "127.0.0.1",
|
|
"HTTP_USER_AGENT": f"Werkzeug/{_get_werkzeug_version()}",
|
|
}
|
|
|
|
@contextmanager
|
|
def session_transaction(
|
|
self, *args: t.Any, **kwargs: t.Any
|
|
) -> t.Iterator[SessionMixin]:
|
|
"""When used in combination with a ``with`` statement this opens a
|
|
session transaction. This can be used to modify the session that
|
|
the test client uses. Once the ``with`` block is left the session is
|
|
stored back.
|
|
|
|
::
|
|
|
|
with client.session_transaction() as session:
|
|
session['value'] = 42
|
|
|
|
Internally this is implemented by going through a temporary test
|
|
request context and since session handling could depend on
|
|
request variables this function accepts the same arguments as
|
|
:meth:`~flask.Flask.test_request_context` which are directly
|
|
passed through.
|
|
"""
|
|
if self._cookies is None:
|
|
raise TypeError(
|
|
"Cookies are disabled. Create a client with 'use_cookies=True'."
|
|
)
|
|
|
|
app = self.application
|
|
ctx = app.test_request_context(*args, **kwargs)
|
|
self._add_cookies_to_wsgi(ctx.request.environ)
|
|
|
|
with ctx:
|
|
sess = app.session_interface.open_session(app, ctx.request)
|
|
|
|
if sess is None:
|
|
raise RuntimeError("Session backend did not open a session.")
|
|
|
|
yield sess
|
|
resp = app.response_class()
|
|
|
|
if app.session_interface.is_null_session(sess):
|
|
return
|
|
|
|
with ctx:
|
|
app.session_interface.save_session(app, sess, resp)
|
|
|
|
self._update_cookies_from_response(
|
|
ctx.request.host.partition(":")[0],
|
|
ctx.request.path,
|
|
resp.headers.getlist("Set-Cookie"),
|
|
)
|
|
|
|
def _copy_environ(self, other: WSGIEnvironment) -> WSGIEnvironment:
|
|
out = {**self.environ_base, **other}
|
|
|
|
if self.preserve_context:
|
|
out["werkzeug.debug.preserve_context"] = self._new_contexts.append
|
|
|
|
return out
|
|
|
|
def _request_from_builder_args(
|
|
self, args: tuple[t.Any, ...], kwargs: dict[str, t.Any]
|
|
) -> BaseRequest:
|
|
kwargs["environ_base"] = self._copy_environ(kwargs.get("environ_base", {}))
|
|
builder = EnvironBuilder(self.application, *args, **kwargs)
|
|
|
|
try:
|
|
return builder.get_request()
|
|
finally:
|
|
builder.close()
|
|
|
|
def open(
|
|
self,
|
|
*args: t.Any,
|
|
buffered: bool = False,
|
|
follow_redirects: bool = False,
|
|
**kwargs: t.Any,
|
|
) -> TestResponse:
|
|
if args and isinstance(
|
|
args[0], (werkzeug.test.EnvironBuilder, dict, BaseRequest)
|
|
):
|
|
if isinstance(args[0], werkzeug.test.EnvironBuilder):
|
|
builder = copy(args[0])
|
|
builder.environ_base = self._copy_environ(builder.environ_base or {}) # type: ignore[arg-type]
|
|
request = builder.get_request()
|
|
elif isinstance(args[0], dict):
|
|
request = EnvironBuilder.from_environ(
|
|
args[0], app=self.application, environ_base=self._copy_environ({})
|
|
).get_request()
|
|
else:
|
|
# isinstance(args[0], BaseRequest)
|
|
request = copy(args[0])
|
|
request.environ = self._copy_environ(request.environ)
|
|
else:
|
|
# request is None
|
|
request = self._request_from_builder_args(args, kwargs)
|
|
|
|
# Pop any previously preserved contexts. This prevents contexts
|
|
# from being preserved across redirects or multiple requests
|
|
# within a single block.
|
|
self._context_stack.close()
|
|
|
|
response = super().open(
|
|
request,
|
|
buffered=buffered,
|
|
follow_redirects=follow_redirects,
|
|
)
|
|
response.json_module = self.application.json # type: ignore[assignment]
|
|
|
|
# Re-push contexts that were preserved during the request.
|
|
for cm in self._new_contexts:
|
|
self._context_stack.enter_context(cm)
|
|
|
|
self._new_contexts.clear()
|
|
return response
|
|
|
|
def __enter__(self) -> FlaskClient:
|
|
if self.preserve_context:
|
|
raise RuntimeError("Cannot nest client invocations")
|
|
self.preserve_context = True
|
|
return self
|
|
|
|
def __exit__(
|
|
self,
|
|
exc_type: type | None,
|
|
exc_value: BaseException | None,
|
|
tb: TracebackType | None,
|
|
) -> None:
|
|
self.preserve_context = False
|
|
self._context_stack.close()
|
|
|
|
|
|
class FlaskCliRunner(CliRunner):
|
|
"""A :class:`~click.testing.CliRunner` for testing a Flask app's
|
|
CLI commands. Typically created using
|
|
:meth:`~flask.Flask.test_cli_runner`. See :ref:`testing-cli`.
|
|
"""
|
|
|
|
def __init__(self, app: Flask, **kwargs: t.Any) -> None:
|
|
self.app = app
|
|
super().__init__(**kwargs)
|
|
|
|
def invoke( # type: ignore
|
|
self, cli: t.Any = None, args: t.Any = None, **kwargs: t.Any
|
|
) -> Result:
|
|
"""Invokes a CLI command in an isolated environment. See
|
|
:meth:`CliRunner.invoke <click.testing.CliRunner.invoke>` for
|
|
full method documentation. See :ref:`testing-cli` for examples.
|
|
|
|
If the ``obj`` argument is not given, passes an instance of
|
|
:class:`~flask.cli.ScriptInfo` that knows how to load the Flask
|
|
app being tested.
|
|
|
|
:param cli: Command object to invoke. Default is the app's
|
|
:attr:`~flask.app.Flask.cli` group.
|
|
:param args: List of strings to invoke the command with.
|
|
|
|
:return: a :class:`~click.testing.Result` object.
|
|
"""
|
|
if cli is None:
|
|
cli = self.app.cli
|
|
|
|
if "obj" not in kwargs:
|
|
kwargs["obj"] = ScriptInfo(create_app=lambda: self.app)
|
|
|
|
return super().invoke(cli, args, **kwargs)
|