Advance to version 0.7.1.

.readthedocs.yaml

@@ -0,0 +1,41 @@
+# The Flask HTTP Digest Authentication Project.
+# Author: imacat@mail.imacat.idv.tw (imacat), 2023/4/5
+
+#  Copyright (c) 2023 imacat.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+# .readthedocs.yaml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Set the version of Python and other tools you might need
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.8"
+
+# Build documentation in the docs/ directory with Sphinx
+
+# If using Sphinx, optionally build your docs in additional formats such as PDF
+formats: all
+
+# Optionally declare the Python requirements required to build your docs
+python:
+   install:
+   - method: pip
+     path: .
+   - requirements: docs/requirements.txt

MANIFEST.in

@@ -15,8 +15,7 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 
-include docs/*
-include docs/source/*
-include docs/source/_static/*
-include docs/source/_templates/*
-include tests/*
+recursive-include docs *
+recursive-exclude docs/build *
+recursive-include tests *
+recursive-exclude tests *.pyc

README.rst

@@ -12,8 +12,6 @@ views.
 
 HTTP Digest Authentication is specified in `RFC 2617`_.
 
-Refer to the full `Flask-DigestAuth readthedocs documentation`_.
-
 
 Why HTTP Digest Authentication?
 -------------------------------
@@ -52,345 +50,16 @@ You may also install the latest source from the
     pip install git+https://github.com/imacat/flask-digestauth.git
 
 
-Configuration
+Documentation
 =============
 
-Flask-DigestAuth takes the configuration ``DIGEST_AUTH_REALM`` as the
-realm.  The default realm is ``Login Required``.
+Refer to the `documentation on Read the Docs`_.
 
 
-Setting the Password
-====================
+Change Log
+==========
 
-The password hash of the HTTP Digest Authentication is composed of the
-realm, the username, and the password.  Example for setting the
-password:
-
-::
-
-    from flask_digest_auth import make_password_hash
-
-    user.password = make_password_hash(realm, username, password)
-
-The username is part of the hash.  If the user changes their username,
-you need to ask their password, to generate and store the new password
-hash.
-
-
-Flask-DigestAuth Alone
-======================
-
-Flask-DigestAuth can authenticate the users alone.
-
-
-Simple Applications with Flask-DigestAuth Alone
------------------------------------------------
-
-In your ``my_app.py``:
-
-::
-
-    from flask import Flask, request, redirect
-    from flask_digest_auth import DigestAuth
-
-    app: flask = Flask(__name__)
-    ... (Configure the Flask application) ...
-
-    auth: DigestAuth = DigestAuth()
-    auth.init_app(app)
-
-    @auth.register_get_password
-    def get_password_hash(username: str) -> t.Optional[str]:
-        ... (Load the password hash) ...
-
-    @auth.register_get_user
-    def get_user(username: str) -> t.Optional[t.Any]:
-        ... (Load the user) ...
-
-    @app.get("/admin")
-    @auth.login_required
-    def admin():
-        return f"Hello, {g.user.username}!"
-
-    @app.post("/logout")
-    @auth.login_required
-    def logout():
-        auth.logout()
-        return redirect(request.form.get("next"))
-
-
-Larger Applications with ``create_app()`` with Flask-DigestAuth Alone
----------------------------------------------------------------------
-
-In your ``my_app/__init__.py``:
-
-::
-
-    from flask import Flask
-    from flask_digest_auth import DigestAuth
-
-    auth: DigestAuth = DigestAuth()
-
-    def create_app(test_config = None) -> Flask:
-        app: flask = Flask(__name__)
-        ... (Configure the Flask application) ...
-
-        auth.init_app(app)
-
-        @auth.register_get_password
-        def get_password_hash(username: str) -> t.Optional[str]:
-            ... (Load the password hash) ...
-
-        @auth.register_get_user
-        def get_user(username: str) -> t.Optional[t.Any]:
-            ... (Load the user) ...
-
-        return app
-
-In your ``my_app/views.py``:
-
-::
-
-    from my_app import auth
-    from flask import Flask, Blueprint, request, redirect
-
-    bp = Blueprint("admin", __name__, url_prefix="/admin")
-
-    @bp.get("/admin")
-    @auth.login_required
-    def admin():
-        return f"Hello, {g.user.username}!"
-
-    @app.post("/logout")
-    @auth.login_required
-    def logout():
-        auth.logout()
-        return redirect(request.form.get("next"))
-
-    def init_app(app: Flask) -> None:
-        app.register_blueprint(bp)
-
-
-
-Flask-Login Integration
-=======================
-
-Flask-DigestAuth works with Flask-Login_.  You can write a Flask
-module that requires log in, without specifying how to log in.  The
-application can use either HTTP Digest Authentication, or the log in
-forms, as needed.
-
-To use Flask-Login with Flask-DigestAuth,
-``login_manager.init_app(app)`` must be called before
-``auth.init_app(app)``.
-
-The currently logged-in user can be retrieved at
-``flask_login.current_user``, if any.
-
-The views only depend on Flask-Login, but not the Flask-DigestAuth.
-You can change the actual authentication mechanism without changing
-the views.
-
-
-Simple Applications with Flask-Login Integration
-------------------------------------------------
-
-In your ``my_app.py``:
-
-::
-
-    import flask_login
-    from flask import Flask, request, redirect
-    from flask_digest_auth import DigestAuth
-
-    app: flask = Flask(__name__)
-    ... (Configure the Flask application) ...
-
-    login_manager: flask_login.LoginManager = flask_login.LoginManager()
-    login_manager.init_app(app)
-
-    @login_manager.user_loader
-    def load_user(user_id: str) -> t.Optional[User]:
-        ... (Load the user with the username) ...
-
-    auth: DigestAuth = DigestAuth()
-    auth.init_app(app)
-
-    @auth.register_get_password
-    def get_password_hash(username: str) -> t.Optional[str]:
-        ... (Load the password hash) ...
-
-    @app.get("/admin")
-    @flask_login.login_required
-    def admin():
-        return f"Hello, {flask_login.current_user.get_id()}!"
-
-    @app.post("/logout")
-    @flask_login.login_required
-    def logout():
-        auth.logout()
-        # Do not call flask_login.logout_user()
-        return redirect(request.form.get("next"))
-
-
-Larger Applications with ``create_app()`` with Flask-Login Integration
-----------------------------------------------------------------------
-
-In your ``my_app/__init__.py``:
-
-::
-
-    from flask import Flask
-    from flask_digest_auth import DigestAuth
-    from flask_login import LoginManager
-
-    auth: DigestAuth = DigestAuth()
-
-    def create_app(test_config = None) -> Flask:
-        app: flask = Flask(__name__)
-        ... (Configure the Flask application) ...
-
-        login_manager: LoginManager = LoginManager()
-        login_manager.init_app(app)
-
-        @login_manager.user_loader
-        def load_user(user_id: str) -> t.Optional[User]:
-            ... (Load the user with the username) ...
-
-        auth.init_app(app)
-
-        @auth.register_get_password
-        def get_password_hash(username: str) -> t.Optional[str]:
-            ... (Load the password hash) ...
-
-        return app
-
-In your ``my_app/views.py``:
-
-::
-
-    import flask_login
-    from flask import Flask, Blueprint, request, redirect
-    from my_app import auth
-
-    bp = Blueprint("admin", __name__, url_prefix="/admin")
-
-    @bp.get("/admin")
-    @flask_login.login_required
-    def admin():
-        return f"Hello, {flask_login.current_user.get_id()}!"
-
-    @app.post("/logout")
-    @flask_login.login_required
-    def logout():
-        auth.logout()
-        # Do not call flask_login.logout_user()
-        return redirect(request.form.get("next"))
-
-    def init_app(app: Flask) -> None:
-        app.register_blueprint(bp)
-
-The views only depend on Flask-Login, but not the actual
-authentication mechanism.  You can change the actual authentication
-mechanism without changing the views.
-
-
-Session Integration
-===================
-
-Flask-DigestAuth features session integration.  The user log in
-is remembered in the session.  The authentication information is not
-requested again.  This is different to the practice of the HTTP Digest
-Authentication, but is convenient for the log in accounting.
-
-
-Log In Bookkeeping
-==================
-
-You can register a callback to run when the user logs in, for ex.,
-logging the log in event, adding the log in counter, etc.
-
-::
-
-    @auth.register_on_login
-    def on_login(user: User) -> None:
-        user.visits = user.visits + 1
-
-
-Log Out
-=======
-
-Flask-DigestAuth supports log out.  The user will be prompted for the
-new username and password.
-
-
-Test Client
-===========
-
-Flask-DigestAuth comes with a test client that supports HTTP digest
-authentication.
-
-
-A unittest Test Case
---------------------
-
-::
-
-    from flask import Flask
-    from flask_digest_auth import Client
-    from flask_testing import TestCase
-    from my_app import create_app
-
-    class MyTestCase(TestCase):
-
-        def create_app(self):
-            app: Flask = create_app({
-                "TESTING": True,
-                "SECRET_KEY": token_urlsafe(32),
-                "DIGEST_AUTH_REALM": "admin",
-            })
-            app.test_client_class = Client
-            return app
-
-        def test_admin(self):
-            response = self.client.get("/admin")
-            self.assertEqual(response.status_code, 401)
-            response = self.client.get(
-                "/admin", digest_auth=(USERNAME, PASSWORD))
-            self.assertEqual(response.status_code, 200)
-
-
-A pytest Test
--------------
-
-::
-
-    import pytest
-    from flask import Flask
-    from flask_digest_auth import Client
-    from my_app import create_app
-
-    @pytest.fixture()
-    def app():
-        app: Flask = create_app({
-            "TESTING": True,
-            "SECRET_KEY": token_urlsafe(32),
-            "DIGEST_AUTH_REALM": "admin",
-        })
-        app.test_client_class = Client
-        yield app
-
-    @pytest.fixture()
-    def client(app):
-        return app.test_client()
-
-    def test_admin(app: Flask, client: Client):
-        with app.app_context():
-            response = client.get("/admin")
-            assert response.status_code == 401
-            response = client.get(
-                "/admin", digest_auth=(USERNAME, PASSWORD))
-            assert response.status_code == 200
+Refer to the `change log`_.
 
 
 Copyright
@@ -422,5 +91,6 @@ Authors
 .. _RFC 2617: https://www.rfc-editor.org/rfc/rfc2617
 .. _Flask: https://flask.palletsprojects.com
 .. _Flask-DigestAuth GitHub repository: https://github.com/imacat/flask-digestauth
-.. _Flask-DigestAuth readthedocs documentation: https://flask-digestauth.readthedocs.io
 .. _Flask-Login: https://flask-login.readthedocs.io
+.. _documentation on Read the Docs: https://flask-digestauth.readthedocs.io
+.. _change log: https://flask-digestauth.readthedocs.io/en/latest/changelog.html

docs/requirements.txt

@@ -1 +1 @@
-flask
+sphinx_rtd_theme

docs/source/changelog.rst

@@ -0,0 +1,161 @@
+Change Log
+==========
+
+
+Version 0.7.1
+-------------
+
+Released 2024/12/9
+
+Fix test cases for compatibility with httpx 0.28.0.
+
+
+Version 0.7.0
+-------------
+
+Released 2023/10/8
+
+* Removed the test client.  You should use httpx instead of Flask-Testing
+  when writing automatic tests.  Flask-Testing is not maintained for more
+  than 3 years, and is not compatible with Flask 3 now.
+* Revised to skip the tests when Flask-Login is not compatible with Werkzeug.
+
+
+Version 0.6.2
+-------------
+
+Released 2023/6/10
+
+* Changed logging from STDERR to the Flask logger.
+* Test case updates:
+  * Added missing documentation.
+  * Changed properties from public to private.
+  * Disabled logging.
+
+
+Version 0.6.1
+-------------
+
+Released 2023/5/3
+
+* Revised the code for the upcoming Werkzeug 2.4.
+
+
+Version 0.6.0
+-------------
+
+Released 2023/4/26
+
+* Updated the minimal Python version to 3.8.
+* Switched from ``setup.cfg`` to ``pyproject.toml``.
+* Added the change log.
+* Simplified ``README.rst``.
+
+
+Version 0.5.0
+-------------
+
+Released 2023/1/6
+
+* Added the ``DIGEST_AUTH_REALM`` configuration variable as the
+  recommended way to set the authentication realm.
+* Changed the default realm from an empty string to
+  ``Login Required``.
+
+
+Version 0.4.0
+-------------
+
+Released 2023/1/4
+
+* Changed the package name from ``flask-digest-auth`` to
+  ``Flask-DigestAuth``, according to the Flask recommended extension
+  guidelines
+  https://flask.palletsprojects.com/en/latest/extensiondev/ .
+* Replaced ``app.digest_auth`` with ``app.extensions["digest-auth"]``
+  to store the ``DigestAuth`` instance.
+* Replaced ``auth.app`` with ``current_app``, to prevent circular
+  imports.
+
+
+Version 0.3.1
+-------------
+
+Released 2022/12/29
+
+Fixed the missing authentication state with disabled users.
+
+
+Version 0.3.0
+-------------
+
+Released 2022/12/7
+
+Changed the visibility of several methods and properties of the
+DigestAuth class that should be private to private.
+
+
+Version 0.2.4
+-------------
+
+Released 2022/12/6
+
+Fixed the pytest example in the documentation.
+
+
+Version 0.2.3
+-------------
+
+Released 2022/12/6
+
+Fixed the dependencies for the documentation hosted on Read the Docs.
+
+
+Version 0.2.2
+-------------
+
+Released 2022/12/6
+
+Added the Sphinx documentation, and hosted the documentation on
+Read the Docs.
+
+
+Version 0.2.1
+-------------
+
+Released 2022/12/6
+
+Various fixes, with the help from SonarQube.
+
+
+Version 0.2.0
+-------------
+
+Released 2022/11/27
+
+* Added log out support.  User can log out.
+* Added on-login event handler.  You can do some accounting when the
+  user logs in.
+
+This release is written in Sydney and on the international flight,
+and released in Taipei.
+
+
+Version 0.1.1
+-------------
+
+Released 2022/11/24
+
+Changed the minimal Python version to 3.7.
+
+Released at Sydney, Australia on vacation.
+
+
+Version 0.1.0
+-------------
+
+Released 2022/11/24
+
+The initial release.
+
+Released at Sydney, Australia on vacation.

docs/source/conf.py

@@ -6,6 +6,7 @@ import os
 import sys
 
 sys.path.insert(0, os.path.abspath('../../src/'))
+import flask_digest_auth
 
 # -- Project information -----------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
@@ -13,7 +14,7 @@ sys.path.insert(0, os.path.abspath('../../src/'))
 project = 'Flask-DigestAuth'
 copyright = '2022-2023, imacat'
 author = 'imacat'
-release = '0.5.0'
+release = flask_digest_auth.VERSION
 
 # -- General configuration ---------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration

docs/source/examples.rst

@@ -199,70 +199,3 @@ In your ``my_app/views.py``:
 The views only depend on Flask-Login, but not the actual
 authentication mechanism.  You can change the actual authentication
 mechanism without changing the views.
-
-
-.. _example-unittest:
-
-A unittest Test Case
---------------------
-
-::
-
-    from flask import Flask
-    from flask_digest_auth import Client
-    from flask_testing import TestCase
-    from my_app import create_app
-
-    class MyTestCase(TestCase):
-
-        def create_app(self):
-            app: Flask = create_app({
-                "TESTING": True,
-                "SECRET_KEY": token_urlsafe(32),
-                "DIGEST_AUTH_REALM": "admin",
-            })
-            app.test_client_class = Client
-            return app
-
-        def test_admin(self):
-            response = self.client.get("/admin")
-            self.assertEqual(response.status_code, 401)
-            response = self.client.get(
-                "/admin", digest_auth=(USERNAME, PASSWORD))
-            self.assertEqual(response.status_code, 200)
-
-
-
-.. _example-pytest:
-
-A pytest Test
--------------
-
-::
-
-    import pytest
-    from flask import Flask
-    from flask_digest_auth import Client
-    from my_app import create_app
-
-    @pytest.fixture()
-    def app():
-        app: Flask = create_app({
-            "TESTING": True,
-            "SECRET_KEY": token_urlsafe(32),
-            "DIGEST_AUTH_REALM": "admin",
-        })
-        app.test_client_class = Client
-        yield app
-
-    @pytest.fixture()
-    def client(app):
-        return app.test_client()
-
-    def test_admin(app: Flask, client: Client):
-        with app.app_context():
-            response = client.get("/admin")
-            assert response.status_code == 401
-            response = client.get(
-                "/admin", digest_auth=(USERNAME, PASSWORD))
-            assert response.status_code == 200

docs/source/flask_digest_auth.rst

@@ -20,14 +20,6 @@ flask\_digest\_auth.auth module
    :undoc-members:
    :show-inheritance:
 
-flask\_digest\_auth.test module
--------------------------------
-
-.. automodule:: flask_digest_auth.test
-   :members:
-   :undoc-members:
-   :show-inheritance:
-
 Module contents
 ---------------
 

docs/source/index.rst

@@ -19,6 +19,7 @@ HTTP Digest Authentication is specified in `RFC 2617`_.
    intro
    flask_digest_auth
    examples
+   changelog
 
 
 

docs/source/intro.rst

@@ -137,17 +137,6 @@ new username and password.
 See :meth:`flask_digest_auth.auth.DigestAuth.logout`.
 
 
-Test Client
------------
-
-Flask-DigestAuth comes with a test client that supports HTTP digest
-authentication.
-
-See :class:`flask_digest_auth.test.Client`.
-
-Also see :ref:`example-unittest` and :ref:`example-pytest`.
-
-
 .. _HTTP Digest Authentication: https://en.wikipedia.org/wiki/Digest_access_authentication
 .. _RFC 2617: https://www.rfc-editor.org/rfc/rfc2617
 .. _Flask: https://flask.palletsprojects.com

pyproject.toml

@@ -1,7 +1,7 @@
 # The Flask HTTP Digest Authentication Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2022/11/23
 
-#  Copyright (c) 2022 imacat.
+#  Copyright (c) 2022-2024 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@@ -15,6 +15,42 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 
+[project]
+name = "Flask-DigestAuth"
+dynamic = ["version"]
+description = "The Flask HTTP Digest Authentication project."
+readme = "README.rst"
+requires-python = ">=3.8"
+authors = [
+    {name = "imacat", email = "imacat@mail.imacat.idv.tw"},
+]
+keywords = ["flask", "digest-authentication"]
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "License :: OSI Approved :: Apache Software License",
+    "Operating System :: OS Independent",
+    "Framework :: Flask",
+    "Topic :: System :: Systems Administration :: Authentication/Directory",
+    "Intended Audience :: Developers",
+]
+dependencies = [
+    "Flask",
+]
+
+[project.optional-dependencies]
+devel = [
+    "httpx >= 0.20.0",
+]
+
+[project.urls]
+"Documentation" = "https://flask-digestauth.readthedocs.io"
+"Change Log" = "https://mia-accounting.readthedocs.io/en/latest/changelog.html"
+"Repository" = "https://github.com/imacat/flask-digestauth"
+"Bug Tracker" = "https://github.com/imacat/flask-digestauth/issues"
+
 [build-system]
 requires = ["setuptools>=42"]
 build-backend = "setuptools.build_meta"
+
+[tool.setuptools.dynamic]
+version = {attr = "flask_digest_auth.VERSION"}

setup.cfg

@@ -1,53 +0,0 @@
-# The Flask HTTP Digest Authentication Project.
-# Author: imacat@mail.imacat.idv.tw (imacat), 2022/11/23
-
-#  Copyright (c) 2022-2023 imacat.
-#
-#  Licensed under the Apache License, Version 2.0 (the "License");
-#  you may not use this file except in compliance with the License.
-#  You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-#  Unless required by applicable law or agreed to in writing, software
-#  distributed under the License is distributed on an "AS IS" BASIS,
-#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-#  See the License for the specific language governing permissions and
-#  limitations under the License.
-
-[metadata]
-name = Flask-DigestAuth
-version = 0.5.0
-author = imacat
-author_email = imacat@mail.imacat.idv.tw
-description = The Flask HTTP Digest Authentication project.
-long_description = file: README.rst
-long_description_content_type = text/x-rst
-url = https://github.com/imacat/flask-digestauth
-project_urls =
-    Bug Tracker = https://github.com/imacat/flask-digestauth/issues
-classifiers =
-    Programming Language :: Python :: 3
-    License :: OSI Approved :: Apache Software License
-    Operating System :: OS Independent
-    Framework :: Flask
-    Topic :: System :: Systems Administration :: Authentication/Directory
-    Intended Audience :: Developers
-
-[options]
-package_dir =
-    = src
-packages = find:
-python_requires = >=3.7
-install_requires =
-  flask
-tests_require =
-  unittest
-  flask-testing
-
-[options.packages.find]
-where = src
-
-[options.extras_require]
-flask_login =
-    flask-login

src/flask_digest_auth/__init__.py

@@ -1,7 +1,7 @@
 # The Flask HTTP Digest Authentication Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2022/11/6
 
-#  Copyright (c) 2022 imacat.
+#  Copyright (c) 2022-2023 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@@ -20,4 +20,6 @@
 """
 from flask_digest_auth.algo import make_password_hash, calc_response
 from flask_digest_auth.auth import DigestAuth
-from flask_digest_auth.test import Client
+
+VERSION: str = "0.7.1"
+"""The package version."""

src/flask_digest_auth/algo.py

@@ -20,8 +20,8 @@
 """
 from __future__ import annotations
 
-import typing as t
 from hashlib import md5
+from typing import Optional, Literal
 
 
 def make_password_hash(realm: str, username: str, password: str) -> str:
@@ -44,10 +44,10 @@ def make_password_hash(realm: str, username: str, password: str) -> str:
 
 def calc_response(
         method: str, uri: str, password_hash: str,
-        nonce: str, qop: t.Optional[t.Literal["auth", "auth-int"]] = None,
-        algorithm: t.Optional[t.Literal["MD5", "MD5-sess"]] = "MD5-sess",
-        cnonce: t.Optional[str] = None, nc: t.Optional[str] = None,
-        body: t.Optional[bytes] = None) -> str:
+        nonce: str, qop: Optional[Literal["auth", "auth-int"]] = None,
+        algorithm: Optional[Literal["MD5", "MD5-sess"]] = "MD5-sess",
+        cnonce: Optional[str] = None, nc: Optional[str] = None,
+        body: Optional[bytes] = None) -> str:
     """Calculates the response value of the HTTP digest authentication.
 
     :param method: The request method.

src/flask_digest_auth/auth.py

@@ -23,9 +23,9 @@ See `RFC 2617`_ HTTP Authentication: Basic and Digest Access Authentication
 from __future__ import annotations
 
 import sys
-import typing as t
 from functools import wraps
 from secrets import token_urlsafe, randbits
+from typing import Any, Optional, Literal, Callable, List
 
 from flask import g, request, Response, session, abort, Flask, Request, \
     current_app
@@ -38,7 +38,7 @@ from flask_digest_auth.algo import calc_response
 class DigestAuth:
     """The HTTP digest authentication."""
 
-    def __init__(self, realm: t.Optional[str] = None):
+    def __init__(self, realm: Optional[str] = None):
         """Constructs the HTTP digest authentication.
 
         :param realm: The realm.
@@ -48,16 +48,15 @@ class DigestAuth:
         """The serializer to generate and validate the nonce and opaque."""
         self.realm: str = "Login Required" if realm is None else realm
         """The realm.  Default is "Login Required"."""
-        self.algorithm: t.Optional[t.Literal["MD5", "MD5-sess"]] = None
+        self.algorithm: Optional[Literal["MD5", "MD5-sess"]] = None
         """The algorithm, either None, ``MD5``, or ``MD5-sess``.  Default is
         None."""
         self.use_opaque: bool = True
         """Whether to use an opaque.  Default is True."""
-        self.__domain: t.List[str] = []
+        self.__domain: List[str] = []
         """A list of directories that this username and password applies to.
         Default is empty."""
-        self.__qop: t.List[t.Literal["auth", "auth-int"]] \
-            = ["auth", "auth-int"]
+        self.__qop: List[Literal["auth", "auth-int"]] = ["auth", "auth-int"]
         """A list of supported quality of protection supported, either
         ``qop``, ``auth-int``, both, or empty.  Default is both."""
         self.__get_password_hash: BasePasswordHashGetter \
@@ -68,7 +67,7 @@ class DigestAuth:
         self.__on_login: BaseOnLogInCallback = BaseOnLogInCallback()
         """The callback to run when the user logs in."""
 
-    def login_required(self, view) -> t.Callable:
+    def login_required(self, view) -> Callable:
         """The view decorator for the HTTP digest authentication.
 
         :Example:
@@ -89,7 +88,7 @@ class DigestAuth:
         class NoLogInException(Exception):
             """The exception thrown when the user is not authorized."""
 
-        def get_logged_in_user() -> t.Any:
+        def get_logged_in_user() -> Any:
             """Returns the currently logged-in user.
 
             :return: The currently logged-in user.
@@ -97,13 +96,13 @@ class DigestAuth:
             """
             if "user" not in session:
                 raise NoLogInException
-            user: t.Optional[t.Any] = self.__get_user(session["user"])
+            user: Optional[Any] = self.__get_user(session["user"])
             if user is None:
                 del session["user"]
                 raise NoLogInException
             return user
 
-        def auth_user(state: AuthState) -> t.Any:
+        def auth_user(state: AuthState) -> Any:
             """Authenticates a user.
 
             :param state: The authentication state.
@@ -121,7 +120,7 @@ class DigestAuth:
             return self.__get_user(authorization.username)
 
         @wraps(view)
-        def login_required_view(*args, **kwargs) -> t.Any:
+        def login_required_view(*args, **kwargs) -> Any:
             """The login-protected view.
 
             :param args: The positional arguments of the view.
@@ -141,7 +140,7 @@ class DigestAuth:
                 return view(*args, **kwargs)
             except UnauthorizedException as e:
                 if len(e.args) > 0:
-                    sys.stderr.write(e.args[0] + "\n")
+                    current_app.logger.warning(e.args[0])
                 response: Response = Response()
                 response.status = 401
                 response.headers["WWW-Authenticate"] \
@@ -171,7 +170,7 @@ class DigestAuth:
             except BadData:
                 raise UnauthorizedException("Invalid opaque")
             state.opaque = authorization.opaque
-        password_hash: t.Optional[str] \
+        password_hash: Optional[str] \
             = self.__get_password_hash(authorization.username)
         if password_hash is None:
             raise UnauthorizedException(
@@ -202,7 +201,7 @@ class DigestAuth:
         :return: The ``WWW-Authenticate`` response header.
         """
 
-        def get_opaque() -> t.Optional[str]:
+        def get_opaque() -> Optional[str]:
             """Returns the opaque value.
 
             :return: The opaque value.
@@ -213,7 +212,7 @@ class DigestAuth:
                 return state.opaque
             return self.__serializer.dumps(randbits(32), salt="opaque")
 
-        opaque: t.Optional[str] = get_opaque()
+        opaque: Optional[str] = get_opaque()
         nonce: str = self.__serializer.dumps(
             randbits(32),
             salt="nonce" if opaque is None else f"nonce-{opaque}")
@@ -226,7 +225,7 @@ class DigestAuth:
         if opaque is not None:
             header += f", opaque=\"{opaque}\""
         if state.stale is not None:
-            header += f", stale=TRUE" if state.stale else f", stale=FALSE"
+            header += ", stale=TRUE" if state.stale else ", stale=FALSE"
         if self.algorithm is not None:
             header += f", algorithm=\"{self.algorithm}\""
         if len(self.__qop) > 0:
@@ -234,7 +233,7 @@ class DigestAuth:
             header += f", qop=\"{qop_list}\""
         return header
 
-    def register_get_password(self, func: t.Callable[[str], t.Optional[str]])\
+    def register_get_password(self, func: Callable[[str], Optional[str]]) \
             -> None:
         """The decorator to register the callback to obtain the password hash.
 
@@ -256,7 +255,7 @@ class DigestAuth:
             """The base password hash getter."""
 
             @staticmethod
-            def __call__(username: str) -> t.Optional[str]:
+            def __call__(username: str) -> Optional[str]:
                 """Returns the password hash of a user.
 
                 :param username: The username.
@@ -266,8 +265,7 @@ class DigestAuth:
 
         self.__get_password_hash = PasswordHashGetter()
 
-    def register_get_user(self, func: t.Callable[[str], t.Optional[t.Any]])\
-            -> None:
+    def register_get_user(self, func: Callable[[str], Optional[Any]]) -> None:
         """The decorator to register the callback to obtain the user.
 
         :Example:
@@ -287,7 +285,7 @@ class DigestAuth:
             """The user getter."""
 
             @staticmethod
-            def __call__(username: str) -> t.Optional[t.Any]:
+            def __call__(username: str) -> Optional[Any]:
                 """Returns a user.
 
                 :param username: The username.
@@ -297,7 +295,7 @@ class DigestAuth:
 
         self.__get_user = UserGetter()
 
-    def register_on_login(self, func: t.Callable[[t.Any], None]) -> None:
+    def register_on_login(self, func: Callable[[Any], None]) -> None:
         """The decorator to register the callback to run when the user logs in.
 
         :Example:
@@ -316,7 +314,7 @@ class DigestAuth:
             """The callback when the user logs in."""
 
             @staticmethod
-            def __call__(user: t.Any) -> None:
+            def __call__(user: Any) -> None:
                 """Runs the callback when the user logs in.
 
                 :param user: The logged-in user.
@@ -336,7 +334,6 @@ class DigestAuth:
 
             app: flask = Flask(__name__)
             auth: DigestAuth = DigestAuth()
-            auth.realm = "My Admin"
             auth.init_app(app)
 
         :param app: The Flask application.
@@ -347,8 +344,15 @@ class DigestAuth:
             self.realm = app.config["DIGEST_AUTH_REALM"]
 
         if hasattr(app, "login_manager"):
-            from flask_login import LoginManager, login_user
+            self.__init_login_manager(app)
 
+    def __init_login_manager(self, app: Flask) -> None:
+        """Initializes the Flask-Login login manager.
+
+        :param app: The Flask application.
+        :return: None.
+        """
+        from flask_login import LoginManager, login_user
         login_manager: LoginManager = getattr(app, "login_manager")
 
         @login_manager.unauthorized_handler
@@ -367,7 +371,7 @@ class DigestAuth:
             abort(response)
 
         @login_manager.request_loader
-            def load_user_from_request(req: Request) -> t.Optional[t.Any]:
+        def load_user_from_request(req: Request) -> Optional[Any]:
             """Loads the user from the request header.
 
             :param req: The request.
@@ -428,9 +432,9 @@ class AuthState:
 
     def __init__(self):
         """Constructs the authorization state."""
-        self.opaque: t.Optional[str] = None
+        self.opaque: Optional[str] = None
         """The opaque value specified by the client, if valid."""
-        self.stale: t.Optional[bool] = None
+        self.stale: Optional[bool] = None
         """The stale value, if there is a previous log in attempt."""
 
 
@@ -447,7 +451,7 @@ class BasePasswordHashGetter:
     """
 
     @staticmethod
-    def __call__(username: str) -> t.Optional[str]:
+    def __call__(username: str) -> Optional[str]:
         """Returns the password hash of a user.
 
         :param username: The username.
@@ -468,7 +472,7 @@ class BaseUserGetter:
     """
 
     @staticmethod
-    def __call__(username: str) -> t.Optional[t.Any]:
+    def __call__(username: str) -> Optional[Any]:
         """Returns a user.
 
         :param username: The username.
@@ -488,7 +492,7 @@ class BaseOnLogInCallback:
     """
 
     @staticmethod
-    def __call__(user: t.Any) -> None:
+    def __call__(user: Any) -> None:
         """Runs the callback when the user logs in.
 
         :param user: The logged-in user.

src/flask_digest_auth/test.py

@@ -1,154 +0,0 @@
-# The Flask HTTP Digest Authentication Project.
-# Author: imacat@mail.imacat.idv.tw (imacat), 2022/11/3
-
-#  Copyright (c) 2022 imacat.
-#
-#  Licensed under the Apache License, Version 2.0 (the "License");
-#  you may not use this file except in compliance with the License.
-#  You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-#  Unless required by applicable law or agreed to in writing, software
-#  distributed under the License is distributed on an "AS IS" BASIS,
-#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-#  See the License for the specific language governing permissions and
-#  limitations under the License.
-
-"""The test client with HTTP digest authentication enabled.
-
-"""
-import typing as t
-from secrets import token_urlsafe
-
-from flask import g
-from werkzeug.datastructures import Authorization, WWWAuthenticate
-from werkzeug.test import TestResponse, Client as WerkzeugClient
-
-from flask_digest_auth.algo import calc_response, make_password_hash
-
-
-class Client(WerkzeugClient):
-    """The test client with HTTP digest authentication enabled.
-
-    :Example:
-
-    For unittest_:
-
-    ::
-
-        class MyTestCase(flask_testing.TestCase):
-
-            def create_app(self):
-                app: Flask = create_app({
-                    "SECRET_KEY": token_urlsafe(32),
-                    "TESTING": True
-                })
-                app.test_client_class = Client
-                return app
-
-            def test_admin(self):
-                response = self.client.get("/admin")
-                self.assertEqual(response.status_code, 401)
-                response = self.client.get(
-                    "/admin", digest_auth=(USERNAME, PASSWORD))
-                self.assertEqual(response.status_code, 200)
-
-    For pytest_:
-
-    ::
-
-        @pytest.fixture()
-        def app():
-            app: Flask = create_app({
-                "SECRET_KEY": token_urlsafe(32),
-                "TESTING": True
-            })
-            app.test_client_class = Client
-            yield app
-
-        @pytest.fixture()
-        def client(app):
-            return app.test_client()
-
-        def test_admin(app: Flask, client: Client):
-            with app.app_context():
-                response = client.get("/admin")
-                assert response.status_code == 401
-                response = client.get(
-                    "/admin", digest_auth=(USERNAME, PASSWORD))
-                assert response.status_code == 200
-
-    .. _unittest: https://docs.python.org/3/library/unittest.html
-    .. _pytest: https://pytest.org
-    """
-
-    def open(self, *args, digest_auth: t.Optional[t.Tuple[str, str]] = None,
-             **kwargs) -> TestResponse:
-        """Opens a request.
-
-        :param args: The arguments.
-        :param digest_auth: The (*username*, *password*) tuple for the HTTP
-            digest authentication.
-        :param kwargs: The keyword arguments.
-        :return: The response.
-        """
-        response: TestResponse = super(Client, self).open(*args, **kwargs)
-        www_authenticate: WWWAuthenticate = response.www_authenticate
-        if not (response.status_code == 401
-                and www_authenticate.type == "digest"
-                and digest_auth is not None):
-            return response
-        if hasattr(g, "_login_user"):
-            delattr(g, "_login_user")
-        auth_data: Authorization = self.__class__.make_authorization(
-            www_authenticate, args[0], digest_auth[0], digest_auth[1])
-        response = super(Client, self).open(*args, auth=auth_data, **kwargs)
-        return response
-
-    @staticmethod
-    def make_authorization(www_authenticate: WWWAuthenticate, uri: str,
-                           username: str, password: str) -> Authorization:
-        """Composes and returns the request authorization.
-
-        :param www_authenticate: The ``WWW-Authenticate`` response.
-        :param uri: The request URI.
-        :param username: The username.
-        :param password: The password.
-        :return: The request authorization.
-        """
-        qop: t.Optional[t.Literal["auth", "auth-int"]] = None
-        if www_authenticate.qop is not None and "auth" in www_authenticate.qop:
-            qop = "auth"
-
-        cnonce: t.Optional[str] = None
-        if qop is not None or www_authenticate.algorithm == "MD5-sess":
-            cnonce = token_urlsafe(8)
-        nc: t.Optional[str] = None
-        count: int = 1
-        if qop is not None:
-            nc: str = hex(count)[2:].zfill(8)
-
-        expected: str = calc_response(
-            method="GET", uri=uri,
-            password_hash=make_password_hash(www_authenticate.realm,
-                                             username, password),
-            nonce=www_authenticate.nonce, qop=qop,
-            algorithm=www_authenticate.algorithm, cnonce=cnonce, nc=nc,
-            body=None)
-
-        data: t.Dict[str, str] = {
-            "username": username, "realm": www_authenticate.realm,
-            "nonce": www_authenticate.nonce, "uri": uri, "response": expected}
-        if www_authenticate.algorithm is not None:
-            data["algorithm"] = www_authenticate.algorithm
-        if cnonce is not None:
-            data["cnonce"] = cnonce
-        if www_authenticate.opaque is not None:
-            data["opaque"] = www_authenticate.opaque
-        if qop is not None:
-            data["qop"] = qop
-        if nc is not None:
-            data["nc"] = nc
-
-        return Authorization("digest", data=data)

tests/test_algo.py

@@ -18,8 +18,8 @@
 """The test case for the HTTP digest authentication algorithm.
 
 """
-import typing as t
 import unittest
+from typing import Optional, Literal
 
 from flask_digest_auth import make_password_hash, calc_response
 
@@ -39,11 +39,11 @@ class AlgorithmTestCase(unittest.TestCase):
         method: str = "GET"
         uri: str = "/dir/index.html"
         nonce: str = "dcd98b7102dd2f0e8b11d0f600bfb0c093"
-        qop: t.Optional[t.Literal["auth", "auth-int"]] = "auth"
-        algorithm: t.Optional[t.Literal["MD5", "MD5-sess"]] = None
-        cnonce: t.Optional[str] = "0a4f113b"
-        nc: t.Optional[str] = "00000001"
-        body: t.Optional[bytes] = None
+        qop: Optional[Literal["auth", "auth-int"]] = "auth"
+        algorithm: Optional[Literal["MD5", "MD5-sess"]] = None
+        cnonce: Optional[str] = "0a4f113b"
+        nc: Optional[str] = "00000001"
+        body: Optional[bytes] = None
 
         password_hash: str = make_password_hash(realm, username, password)
         response: str = calc_response(method, uri, password_hash, nonce, qop,

tests/test_auth.py

@@ -18,18 +18,18 @@
 """The test case for the HTTP digest authentication.
 
 """
-import typing as t
+import logging
+import unittest
 from secrets import token_urlsafe
+from typing import Any, Optional, Dict
 
-from flask import Response, Flask, g, redirect, request
-from flask_testing import TestCase
-from werkzeug.datastructures import WWWAuthenticate, Authorization
+import httpx
+from flask import Flask, g, redirect, request
+from werkzeug.datastructures import WWWAuthenticate
 
-from flask_digest_auth import DigestAuth, make_password_hash, Client
-
-_REALM: str = "testrealm@host.com"
-_USERNAME: str = "Mufasa"
-_PASSWORD: str = "Circle Of Life"
+from flask_digest_auth import DigestAuth, make_password_hash
+from testlib import REALM, USERNAME, PASSWORD, ADMIN_1_URI, ADMIN_2_URI, \
+    LOGOUT_URI, make_authorization
 
 
 class User:
@@ -42,34 +42,42 @@ class User:
         :param password: The clear-text password.
         """
         self.username: str = username
-        self.password_hash: str = make_password_hash(
-            _REALM, username, password)
+        """The username."""
+        self.password_hash: str = make_password_hash(REALM, username, password)
+        """The password hash."""
         self.visits: int = 0
+        """The number of visits."""
 
 
-class AuthenticationTestCase(TestCase):
+class AuthenticationTestCase(unittest.TestCase):
     """The test case for the HTTP digest authentication."""
 
-    def create_app(self):
-        """Creates the Flask application.
+    def setUp(self) -> None:
+        """Sets up the test.
+        This is run once per test.
 
-        :return: The Flask application.
+        :return: None.
         """
+        logging.getLogger("test_auth").addHandler(logging.NullHandler())
         app: Flask = Flask(__name__)
         app.config.from_mapping({
             "TESTING": True,
             "SECRET_KEY": token_urlsafe(32),
-            "DIGEST_AUTH_REALM": _REALM,
+            "DIGEST_AUTH_REALM": REALM,
         })
-        app.test_client_class = Client
+        self.__client: httpx.Client = httpx.Client(
+            transport=httpx.WSGITransport(app=app),
+            base_url="https://testserver")
+        """The testing client."""
 
         auth: DigestAuth = DigestAuth()
         auth.init_app(app)
-        self.user: User = User(_USERNAME, _PASSWORD)
-        user_db: t.Dict[str, User] = {_USERNAME: self.user}
+        self.__user: User = User(USERNAME, PASSWORD)
+        """The user account."""
+        user_db: Dict[str, User] = {USERNAME: self.__user}
 
         @auth.register_get_password
-        def get_password_hash(username: str) -> t.Optional[str]:
+        def get_password_hash(username: str) -> Optional[str]:
             """Returns the password hash of a user.
 
             :param username: The username.
@@ -79,7 +87,7 @@ class AuthenticationTestCase(TestCase):
                 else None
 
         @auth.register_get_user
-        def get_user(username: str) -> t.Optional[t.Any]:
+        def get_user(username: str) -> Optional[Any]:
             """Returns a user.
 
             :param username: The username.
@@ -96,7 +104,7 @@ class AuthenticationTestCase(TestCase):
             """
             user.visits = user.visits + 1
 
-        @app.get("/admin-1/auth", endpoint="admin-1")
+        @app.get(ADMIN_1_URI, endpoint="admin-1")
         @auth.login_required
         def admin_1() -> str:
             """The first administration section.
@@ -105,7 +113,7 @@ class AuthenticationTestCase(TestCase):
             """
             return f"Hello, {g.user.username}! #1"
 
-        @app.get("/admin-2/auth", endpoint="admin-2")
+        @app.get(ADMIN_2_URI, endpoint="admin-2")
         @auth.login_required
         def admin_2() -> str:
             """The second administration section.
@@ -114,7 +122,7 @@ class AuthenticationTestCase(TestCase):
             """
             return f"Hello, {g.user.username}! #2"
 
-        @app.post("/logout", endpoint="logout")
+        @app.post(LOGOUT_URI, endpoint="logout")
         @auth.login_required
         def logout() -> redirect:
             """Logs out the user.
@@ -124,63 +132,65 @@ class AuthenticationTestCase(TestCase):
             auth.logout()
             return redirect(request.form.get("next"))
 
-        return app
-
     def test_auth(self) -> None:
         """Tests the authentication.
 
         :return: None.
         """
-        response: Response = self.client.get(self.app.url_for("admin-1"))
+        response: httpx.Response
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 401)
-        response = self.client.get(
-            self.app.url_for("admin-1"), digest_auth=(_USERNAME, _PASSWORD))
+        response = self.__client.get(ADMIN_1_URI,
+                                     auth=httpx.DigestAuth(USERNAME, PASSWORD))
         self.assertEqual(response.status_code, 200)
-        self.assertEqual(response.data.decode("UTF-8"),
-                         f"Hello, {_USERNAME}! #1")
-        response: Response = self.client.get(self.app.url_for("admin-2"))
+        self.assertEqual(response.text, f"Hello, {USERNAME}! #1")
+        response = self.__client.get(ADMIN_2_URI)
         self.assertEqual(response.status_code, 200)
-        self.assertEqual(response.data.decode("UTF-8"),
-                         f"Hello, {_USERNAME}! #2")
-        self.assertEqual(self.user.visits, 1)
+        self.assertEqual(response.text, f"Hello, {USERNAME}! #2")
+        self.assertEqual(self.__user.visits, 1)
 
     def test_stale_opaque(self) -> None:
         """Tests the stale and opaque value.
 
         :return: None.
         """
-        admin_uri: str = self.app.url_for("admin-1")
-        response: Response
+        response: httpx.Response
         www_authenticate: WWWAuthenticate
-        auth_data: Authorization
+        auth_header: str
 
-        response = super(Client, self.client).get(admin_uri)
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 401)
-        www_authenticate = response.www_authenticate
+        www_authenticate = WWWAuthenticate.from_header(
+            response.headers["WWW-Authenticate"])
         self.assertEqual(www_authenticate.type, "digest")
-        self.assertEqual(www_authenticate.stale, None)
+        self.assertIsNone(www_authenticate.get("stale"))
         opaque: str = www_authenticate.opaque
 
         www_authenticate.nonce = "bad"
-        auth_data = Client.make_authorization(
-            www_authenticate, admin_uri, _USERNAME, _PASSWORD)
-        response = super(Client, self.client).get(admin_uri, auth=auth_data)
+        auth_header = make_authorization(
+            www_authenticate, ADMIN_1_URI, USERNAME, PASSWORD)
+        response = self.__client.get(ADMIN_1_URI,
+                                     headers={"Authorization": auth_header})
         self.assertEqual(response.status_code, 401)
-        www_authenticate = response.www_authenticate
-        self.assertEqual(www_authenticate.stale, True)
+        www_authenticate = WWWAuthenticate.from_header(
+            response.headers["WWW-Authenticate"])
+        self.assertEqual(www_authenticate.get("stale"), "TRUE")
         self.assertEqual(www_authenticate.opaque, opaque)
 
-        auth_data = Client.make_authorization(
-            www_authenticate, admin_uri, _USERNAME, _PASSWORD + "2")
-        response = super(Client, self.client).get(admin_uri, auth=auth_data)
+        auth_header = make_authorization(
+            www_authenticate, ADMIN_1_URI, USERNAME, PASSWORD + "2")
+        response = self.__client.get(ADMIN_1_URI,
+                                     headers={"Authorization": auth_header})
         self.assertEqual(response.status_code, 401)
-        www_authenticate = response.www_authenticate
-        self.assertEqual(www_authenticate.stale, False)
+        www_authenticate = WWWAuthenticate.from_header(
+            response.headers["WWW-Authenticate"])
+        self.assertEqual(www_authenticate.get("stale"), "FALSE")
         self.assertEqual(www_authenticate.opaque, opaque)
 
-        auth_data = Client.make_authorization(
-            www_authenticate, admin_uri, _USERNAME, _PASSWORD)
-        response = super(Client, self.client).get(admin_uri, auth=auth_data)
+        auth_header = make_authorization(
+            www_authenticate, ADMIN_1_URI, USERNAME, PASSWORD)
+        response = self.__client.get(ADMIN_1_URI,
+                                     headers={"Authorization": auth_header})
         self.assertEqual(response.status_code, 200)
 
     def test_logout(self) -> None:
@@ -188,35 +198,34 @@ class AuthenticationTestCase(TestCase):
 
         :return: None.
         """
-        admin_uri: str = self.app.url_for("admin-1")
-        logout_uri: str = self.app.url_for("logout")
-        response: Response
+        logout_uri: str = LOGOUT_URI
+        response: httpx.Response
 
-        response = self.client.get(admin_uri)
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 401)
 
-        response = self.client.get(admin_uri,
-                                   digest_auth=(_USERNAME, _PASSWORD))
+        response = self.__client.get(ADMIN_1_URI,
+                                     auth=httpx.DigestAuth(USERNAME, PASSWORD))
         self.assertEqual(response.status_code, 200)
 
-        response = self.client.get(admin_uri)
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 200)
 
-        response = self.client.post(logout_uri, data={"next": admin_uri})
+        response = self.__client.post(logout_uri, data={"next": ADMIN_1_URI})
         self.assertEqual(response.status_code, 302)
-        self.assertEqual(response.location, admin_uri)
+        self.assertEqual(response.headers["Location"], ADMIN_1_URI)
 
-        response = self.client.get(admin_uri)
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 401)
 
-        response = self.client.get(admin_uri,
-                                   digest_auth=(_USERNAME, _PASSWORD))
+        response = self.__client.get(ADMIN_1_URI,
+                                     auth=httpx.DigestAuth(USERNAME, PASSWORD))
         self.assertEqual(response.status_code, 401)
 
-        response = self.client.get(admin_uri,
-                                   digest_auth=(_USERNAME, _PASSWORD))
+        response = self.__client.get(ADMIN_1_URI,
+                                     auth=httpx.DigestAuth(USERNAME, PASSWORD))
         self.assertEqual(response.status_code, 200)
 
-        response = self.client.get(admin_uri)
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 200)
-        self.assertEqual(self.user.visits, 2)
+        self.assertEqual(self.__user.visits, 2)

tests/test_flask_login.py

@@ -18,18 +18,21 @@
 """The test case for the Flask-Login integration.
 
 """
-import typing as t
+import logging
+import unittest
 from secrets import token_urlsafe
+from typing import Optional, Dict
 
-from flask import Response, Flask, g, redirect, request
-from flask_testing import TestCase
-from werkzeug.datastructures import WWWAuthenticate, Authorization
+import httpx
+from flask import Flask, g, redirect, request
+from werkzeug.datastructures import WWWAuthenticate
 
-from flask_digest_auth import DigestAuth, make_password_hash, Client
+from flask_digest_auth import DigestAuth, make_password_hash
+from testlib import REALM, USERNAME, PASSWORD, ADMIN_1_URI, ADMIN_2_URI, \
+    LOGOUT_URI, make_authorization
 
-_REALM: str = "testrealm@host.com"
-_USERNAME: str = "Mufasa"
-_PASSWORD: str = "Circle Of Life"
+SKIPPED_NO_FLASK_LOGIN: str = "Skipped without Flask-Login."
+"""The message that a test is skipped when Flask-Login is not installed."""
 
 
 class User:
@@ -42,11 +45,15 @@ class User:
         :param password: The clear-text password.
         """
         self.username: str = username
-        self.password_hash: str = make_password_hash(
-            _REALM, username, password)
+        """The username."""
+        self.password_hash: str = make_password_hash(REALM, username, password)
+        """The password hash."""
         self.visits: int = 0
+        """The number of visits."""
         self.is_active: bool = True
+        """True if the account is active, or False otherwise."""
         self.is_anonymous: bool = False
+        """True if the account is anonymous, or False otherwise."""
 
     def get_id(self) -> str:
         """Returns the username.
@@ -67,40 +74,50 @@ class User:
         return self.is_active
 
 
-class FlaskLoginTestCase(TestCase):
+class FlaskLoginTestCase(unittest.TestCase):
     """The test case with the Flask-Login integration."""
 
-    def create_app(self) -> Flask:
-        """Creates the Flask application.
+    def setUp(self) -> None:
+        """Sets up the test.
+        This is run once per test.
 
-        :return: The Flask application.
+        :return: None.
         """
-        app: Flask = Flask(__name__)
-        app.config.from_mapping({
+        logging.getLogger("test_flask_login").addHandler(logging.NullHandler())
+        self.app: Flask = Flask(__name__)
+        self.app.config.from_mapping({
             "TESTING": True,
             "SECRET_KEY": token_urlsafe(32),
-            "DIGEST_AUTH_REALM": _REALM,
+            "DIGEST_AUTH_REALM": REALM,
         })
-        app.test_client_class = Client
+        self.__client: httpx.Client = httpx.Client(
+            transport=httpx.WSGITransport(app=self.app),
+            base_url="https://testserver")
+        """The testing client."""
 
-        self.has_flask_login: bool = True
+        self.__has_flask_login: bool = True
+        """Whether the Flask-Login package is installed."""
         try:
             import flask_login
         except ModuleNotFoundError:
-            self.has_flask_login = False
-            return app
+            self.__has_flask_login = False
+            return
+        except ImportError:
+            self.__has_flask_login = False
+            return
 
         login_manager: flask_login.LoginManager = flask_login.LoginManager()
-        login_manager.init_app(app)
+        login_manager.init_app(self.app)
 
         auth: DigestAuth = DigestAuth()
-        auth.init_app(app)
+        auth.init_app(self.app)
 
-        self.user: User = User(_USERNAME, _PASSWORD)
-        user_db: t.Dict[str, User] = {_USERNAME: self.user}
+        self.__user: User = User(USERNAME, PASSWORD)
+        """The user account."""
+        user_db: Dict[str, User] = {USERNAME: self.__user}
 
         @auth.register_get_password
-        def get_password_hash(username: str) -> t.Optional[str]:
+        def get_password_hash(username: str) -> Optional[str]:
             """Returns the password hash of a user.
 
             :param username: The username.
@@ -119,7 +136,7 @@ class FlaskLoginTestCase(TestCase):
             user.visits = user.visits + 1
 
         @login_manager.user_loader
-        def load_user(user_id: str) -> t.Optional[User]:
+        def load_user(user_id: str) -> Optional[User]:
             """Loads a user.
 
             :param user_id: The username.
@@ -127,7 +144,7 @@ class FlaskLoginTestCase(TestCase):
             """
             return user_db[user_id] if user_id in user_db else None
 
-        @app.get("/admin-1/auth", endpoint="admin-1")
+        @self.app.get(ADMIN_1_URI)
         @flask_login.login_required
         def admin_1() -> str:
             """The first administration section.
@@ -136,7 +153,7 @@ class FlaskLoginTestCase(TestCase):
             """
             return f"Hello, {flask_login.current_user.get_id()}! #1"
 
-        @app.get("/admin-2/auth", endpoint="admin-2")
+        @self.app.get(ADMIN_2_URI)
         @flask_login.login_required
         def admin_2() -> str:
             """The second administration section.
@@ -145,7 +162,7 @@ class FlaskLoginTestCase(TestCase):
             """
             return f"Hello, {flask_login.current_user.get_id()}! #2"
 
-        @app.post("/logout", endpoint="logout")
+        @self.app.post(LOGOUT_URI)
         @flask_login.login_required
         def logout() -> redirect:
             """Logs out the user.
@@ -155,75 +172,81 @@ class FlaskLoginTestCase(TestCase):
             auth.logout()
             return redirect(request.form.get("next"))
 
-        return app
-
     def test_auth(self) -> None:
         """Tests the authentication.
 
         :return: None.
         """
-        if not self.has_flask_login:
-            self.skipTest("Skipped without Flask-Login.")
+        if not self.__has_flask_login:
+            self.skipTest(SKIPPED_NO_FLASK_LOGIN)
 
-        response: Response = self.client.get(self.app.url_for("admin-1"))
+        response: httpx.Response
+
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 401)
-        response = self.client.get(
-            self.app.url_for("admin-1"), digest_auth=(_USERNAME, _PASSWORD))
+        response = self.__client.get(ADMIN_1_URI,
+                                     auth=httpx.DigestAuth(USERNAME, PASSWORD))
         self.assertEqual(response.status_code, 200)
-        self.assertEqual(response.data.decode("UTF-8"),
-                         f"Hello, {_USERNAME}! #1")
-        response: Response = self.client.get(self.app.url_for("admin-2"))
+        self.assertEqual(response.text, f"Hello, {USERNAME}! #1")
+        response = self.__client.get(ADMIN_2_URI)
         self.assertEqual(response.status_code, 200)
-        self.assertEqual(response.data.decode("UTF-8"),
-                         f"Hello, {_USERNAME}! #2")
-        self.assertEqual(self.user.visits, 1)
+        self.assertEqual(response.text, f"Hello, {USERNAME}! #2")
+        self.assertEqual(self.__user.visits, 1)
 
     def test_stale_opaque(self) -> None:
         """Tests the stale and opaque value.
 
         :return: None.
         """
-        if not self.has_flask_login:
-            self.skipTest("Skipped without Flask-Login.")
+        if not self.__has_flask_login:
+            self.skipTest(SKIPPED_NO_FLASK_LOGIN)
 
-        admin_uri: str = self.app.url_for("admin-1")
-        response: Response
+        response: httpx.Response
         www_authenticate: WWWAuthenticate
-        auth_data: Authorization
+        auth_header: str
 
-        response = super(Client, self.client).get(admin_uri)
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 401)
-        www_authenticate = response.www_authenticate
+        www_authenticate = WWWAuthenticate.from_header(
+            response.headers["WWW-Authenticate"])
         self.assertEqual(www_authenticate.type, "digest")
-        self.assertEqual(www_authenticate.stale, None)
+        self.assertIsNone(www_authenticate.get("stale"))
         opaque: str = www_authenticate.opaque
 
+        with self.app.app_context():
             if hasattr(g, "_login_user"):
                 delattr(g, "_login_user")
         www_authenticate.nonce = "bad"
-        auth_data = Client.make_authorization(
-            www_authenticate, admin_uri, _USERNAME, _PASSWORD)
-        response = super(Client, self.client).get(admin_uri, auth=auth_data)
+        auth_header = make_authorization(
+            www_authenticate, ADMIN_1_URI, USERNAME, PASSWORD)
+        response = self.__client.get(ADMIN_1_URI,
+                                     headers={"Authorization": auth_header})
         self.assertEqual(response.status_code, 401)
-        www_authenticate = response.www_authenticate
-        self.assertEqual(www_authenticate.stale, True)
+        www_authenticate = WWWAuthenticate.from_header(
+            response.headers["WWW-Authenticate"])
+        self.assertEqual(www_authenticate.get("stale"), "TRUE")
         self.assertEqual(www_authenticate.opaque, opaque)
 
+        with self.app.app_context():
             if hasattr(g, "_login_user"):
                 delattr(g, "_login_user")
-        auth_data = Client.make_authorization(
-            www_authenticate, admin_uri, _USERNAME, _PASSWORD + "2")
-        response = super(Client, self.client).get(admin_uri, auth=auth_data)
+        auth_header = make_authorization(
+            www_authenticate, ADMIN_1_URI, USERNAME, PASSWORD + "2")
+        response = self.__client.get(ADMIN_1_URI,
+                                     headers={"Authorization": auth_header})
         self.assertEqual(response.status_code, 401)
-        www_authenticate = response.www_authenticate
-        self.assertEqual(www_authenticate.stale, False)
+        www_authenticate = WWWAuthenticate.from_header(
+            response.headers["WWW-Authenticate"])
+        self.assertEqual(www_authenticate.get("stale"), "FALSE")
         self.assertEqual(www_authenticate.opaque, opaque)
 
+        with self.app.app_context():
             if hasattr(g, "_login_user"):
                 delattr(g, "_login_user")
-        auth_data = Client.make_authorization(
-            www_authenticate, admin_uri, _USERNAME, _PASSWORD)
-        response = super(Client, self.client).get(admin_uri, auth=auth_data)
+        auth_header = make_authorization(
+            www_authenticate, ADMIN_1_URI, USERNAME, PASSWORD)
+        response = self.__client.get(ADMIN_1_URI,
+                                     headers={"Authorization": auth_header})
         self.assertEqual(response.status_code, 200)
 
     def test_logout(self) -> None:
@@ -231,69 +254,67 @@ class FlaskLoginTestCase(TestCase):
 
         :return: None.
         """
-        if not self.has_flask_login:
-            self.skipTest("Skipped without Flask-Login.")
+        if not self.__has_flask_login:
+            self.skipTest(SKIPPED_NO_FLASK_LOGIN)
 
-        admin_uri: str = self.app.url_for("admin-1")
-        logout_uri: str = self.app.url_for("logout")
-        response: Response
+        response: httpx.Response
 
-        response = self.client.get(admin_uri)
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 401)
 
-        response = self.client.get(admin_uri,
-                                   digest_auth=(_USERNAME, _PASSWORD))
+        response = self.__client.get(ADMIN_1_URI,
+                                     auth=httpx.DigestAuth(USERNAME, PASSWORD))
         self.assertEqual(response.status_code, 200)
 
-        response = self.client.get(admin_uri)
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 200)
 
-        response = self.client.post(logout_uri, data={"next": admin_uri})
+        response = self.__client.post(LOGOUT_URI, data={"next": ADMIN_1_URI})
         self.assertEqual(response.status_code, 302)
-        self.assertEqual(response.location, admin_uri)
+        self.assertEqual(response.headers["Location"], ADMIN_1_URI)
 
-        response = self.client.get(admin_uri)
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 401)
 
-        response = self.client.get(admin_uri,
-                                   digest_auth=(_USERNAME, _PASSWORD))
+        response = self.__client.get(ADMIN_1_URI,
+                                     auth=httpx.DigestAuth(USERNAME, PASSWORD))
         self.assertEqual(response.status_code, 401)
 
-        response = self.client.get(admin_uri,
-                                   digest_auth=(_USERNAME, _PASSWORD))
+        response = self.__client.get(ADMIN_1_URI,
+                                     auth=httpx.DigestAuth(USERNAME, PASSWORD))
         self.assertEqual(response.status_code, 200)
 
-        response = self.client.get(admin_uri)
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 200)
-        self.assertEqual(self.user.visits, 2)
+        self.assertEqual(self.__user.visits, 2)
 
     def test_disabled(self) -> None:
         """Tests the disabled user.
 
         :return: None.
         """
-        if not self.has_flask_login:
-            self.skipTest("Skipped without Flask-Login.")
+        if not self.__has_flask_login:
+            self.skipTest(SKIPPED_NO_FLASK_LOGIN)
 
-        response: Response
+        response: httpx.Response
 
-        self.user.is_active = False
-        response = self.client.get(self.app.url_for("admin-1"))
+        self.__user.is_active = False
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 401)
-        response = self.client.get(self.app.url_for("admin-1"),
-                                   digest_auth=(_USERNAME, _PASSWORD))
+        response = self.__client.get(ADMIN_1_URI,
+                                     auth=httpx.DigestAuth(USERNAME, PASSWORD))
         self.assertEqual(response.status_code, 401)
 
-        self.user.is_active = True
-        response = self.client.get(self.app.url_for("admin-1"),
-                                   digest_auth=(_USERNAME, _PASSWORD))
+        self.__user.is_active = True
+        response = self.__client.get(ADMIN_1_URI,
+                                     auth=httpx.DigestAuth(USERNAME, PASSWORD))
         self.assertEqual(response.status_code, 200)
-        response = self.client.get(self.app.url_for("admin-1"))
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 200)
 
-        self.user.is_active = False
-        response = self.client.get(self.app.url_for("admin-1"))
+        self.__user.is_active = False
+        response = self.__client.get(ADMIN_1_URI)
         self.assertEqual(response.status_code, 401)
-        response = self.client.get(self.app.url_for("admin-1"),
-                                   digest_auth=(_USERNAME, _PASSWORD))
+        response = self.__client.get(ADMIN_1_URI,
+                                     auth=httpx.DigestAuth(USERNAME, PASSWORD))
         self.assertEqual(response.status_code, 401)

tests/testlib.py

@@ -0,0 +1,87 @@
+# The Flask HTTP Digest Authentication Project.
+# Author: imacat@mail.imacat.idv.tw (imacat), 2023/10/5
+
+#  Copyright (c) 2023 imacat.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+"""The common test libraries.
+
+"""
+from secrets import token_urlsafe
+from typing import Optional, Literal, Dict
+
+from werkzeug.datastructures import Authorization, WWWAuthenticate
+from werkzeug.http import parse_set_header
+
+from flask_digest_auth import calc_response, make_password_hash
+
+REALM: str = "testrealm@host.com"
+"""The realm."""
+USERNAME: str = "Mufasa"
+"""The username."""
+PASSWORD: str = "Circle Of Life"
+"""The password."""
+ADMIN_1_URI: str = "/admin-1/auth"
+"""The first administration URI."""
+ADMIN_2_URI: str = "/admin-2/auth"
+"""The first administration URI."""
+LOGOUT_URI: str = "/logout"
+"""The log out URI."""
+
+
+def make_authorization(www_authenticate: WWWAuthenticate, uri: str,
+                       username: str, password: str) -> str:
+    """Composes and returns the request authorization.
+
+    :param www_authenticate: The ``WWW-Authenticate`` response.
+    :param uri: The request URI.
+    :param username: The username.
+    :param password: The password.
+    :return: The request authorization header.
+    """
+    qop: Optional[Literal["auth", "auth-int"]] = None
+    if "auth" in parse_set_header(www_authenticate.get("qop")):
+        qop = "auth"
+
+    cnonce: Optional[str] = None
+    if qop is not None or www_authenticate.algorithm == "MD5-sess":
+        cnonce = token_urlsafe(8)
+    nc: Optional[str] = None
+    count: int = 1
+    if qop is not None:
+        nc: str = hex(count)[2:].zfill(8)
+
+    expected: str = calc_response(
+        method="GET", uri=uri,
+        password_hash=make_password_hash(www_authenticate.realm,
+                                         username, password),
+        nonce=www_authenticate.nonce, qop=qop,
+        algorithm=www_authenticate.algorithm, cnonce=cnonce, nc=nc,
+        body=None)
+
+    data: Dict[str, str] = {
+        "username": username, "realm": www_authenticate.realm,
+        "nonce": www_authenticate.nonce, "uri": uri, "response": expected}
+    if www_authenticate.algorithm is not None:
+        data["algorithm"] = www_authenticate.algorithm
+    if cnonce is not None:
+        data["cnonce"] = cnonce
+    if www_authenticate.opaque is not None:
+        data["opaque"] = www_authenticate.opaque
+    if qop is not None:
+        data["qop"] = qop
+    if nc is not None:
+        data["nc"] = nc
+
+    return str(Authorization("digest", data=data))