diff --git a/authentication/authentication.py b/authentication/authentication.py
index c123d4f..445bcc7 100644
--- a/authentication/authentication.py
+++ b/authentication/authentication.py
@@ -327,7 +327,7 @@ def delete_todo(id):
 @consumes('application/json')
 def list_todos():
     """
-    List todo items.
+    List todo items, with optional filters.
 
     :reqheader Content-Type: application/json
     :resheader Content-Type: application/json
@@ -346,6 +346,52 @@ def list_todos():
     )
     return jsonify(response.json()), response.status_code
 
+
+@app.route('/todos/<id>', methods=['PATCH'])
+@consumes('application/json')
+def update_todo(id):
+    """
+    Update a todo item. If an item is changed from not-completed to completed,
+    the ``completion_timestamp`` is set as now.
+
+    :reqheader Content-Type: application/json
+
+    :queryparameter number id: The id of the todo item.
+
+    :reqjson string content: The new of the item (optional).
+    :reqjson boolean completed: Whether the item is completed (optional).
+
+    :resheader Content-Type: application/json
+
+    :resjson string id: The id of the item.
+    :resjson string content: The content item.
+    :resjson boolean completed: Whether the item is completed.
+    :resjson number completion_timestamp: The completion UNIX timestamp (now),
+        or ``null`` if the item is not completed.
+
+    :status 200: An item with the given details has been created.
+    :status 404: There is no item with the given ``id``.
+    """
+    get_response, get_status_code = read_todo(id)
+
+    if not get_status_code == codes.OK:
+        return jsonify(get_response.json), get_status_code
+
+    already_completed = get_response.json['completed']
+    data = json.loads(request.data)
+    if data.get('completed') and not already_completed:
+        now = datetime.datetime.now(tz=pytz.utc)
+        data['completion_timestamp'] = now.timestamp()
+    elif data.get('completed') is False:
+        data['completion_timestamp'] = None
+
+    response = requests.patch(
+        urljoin(STORAGE_URL, 'todos/{id}').format(id=id),
+        headers={'Content-Type': 'application/json'},
+        data=json.dumps(data),
+    )
+    return jsonify(response.json()), response.status_code
+
 if __name__ == '__main__':   # pragma: no cover
     # Specifying 0.0.0.0 as the host tells the operating system to listen on
     # all public IPs. This makes the server visible externally.
diff --git a/storage/storage.py b/storage/storage.py
index e596f8d..4027848 100644
--- a/storage/storage.py
+++ b/storage/storage.py
@@ -298,6 +298,53 @@ def list_todos():
     todos = Todo.query.filter_by(**todo_filter).all()
     return jsonify(todos=[todo.as_dict() for todo in todos]), codes.OK
 
+
+@app.route('/todos/<id>', methods=['PATCH'])
+@consumes('application/json')
+def update_todo(id):
+    """
+    Update a todo item.
+
+    :reqheader Content-Type: application/json
+
+    :queryparameter number id: The id of the todo item.
+
+    :reqjson string content: The new of the item.
+    :reqjson boolean completed: Whether the item is completed.
+    :reqjson number completion_timestamp: The completion UNIX timestamp, or
+        ``null``.
+
+    :resheader Content-Type: application/json
+
+    :resjson string id: The id of the item.
+    :resjson string content: The content item.
+    :resjson boolean completed: Whether the item is completed.
+    :resjson number completion_timestamp: The completion UNIX timestamp (now),
+        or ``null`` if the item is not completed.
+
+    :status 200: An item with the given details has been created.
+    :status 404: There is no item with the given ``id``.
+    """
+    todo = Todo.query.filter_by(id=id).first()
+
+    if todo is None:
+        return jsonify(
+            title='The requested todo does not exist.',
+            detail='No todo exists with the id "{id}"'.format(id=id),
+        ), codes.NOT_FOUND
+
+    if 'content' in request.json:
+        todo.content = request.json['content']
+
+    if 'completed' in request.json:
+        todo.completed = request.json['completed']
+
+    if 'completion_timestamp' in request.json:
+        todo.completion_timestamp = request.json['completion_timestamp']
+
+    db.session.commit()
+    return jsonify(todo.as_dict()), codes.OK
+
 if __name__ == '__main__':   # pragma: no cover
     # Specifying 0.0.0.0 as the host tells the operating system to listen on
     # all public IPs. This makes the server visible externally.

Add ability to update a TODO item (PATCH)
diff --git a/authentication/tests/test_authentication.py b/authentication/tests/test_authentication.py
index 2a76131..6f7108a 100644
--- a/authentication/tests/test_authentication.py
+++ b/authentication/tests/test_authentication.py
@@ -884,3 +884,220 @@ class ListTodosTests(AuthenticationTests):
         """
         response = self.app.get('/todos', content_type='text/html')
         self.assertEqual(response.status_code, codes.UNSUPPORTED_MEDIA_TYPE)
+
+
+class UpdateTodoTests(AuthenticationTests):
+    """
+    Tests for updating a todo item at ``PATCH /todos/{id}.``.
+    """
+
+    @responses.activate
+    def test_change_content(self):
+        """
+        It is possible to change the content of a todo item.
+        """
+        create = self.app.post(
+            '/todos',
+            content_type='application/json',
+            data=json.dumps(NOT_COMPLETED_TODO_DATA),
+        )
+
+        new_content = 'Book vacation'
+
+        patch = self.app.patch(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+            data=json.dumps({'content': new_content}),
+        )
+
+        expected = create.json
+        expected['content'] = new_content
+
+        self.assertEqual(patch.status_code, codes.OK)
+        self.assertEqual(patch.json, expected)
+
+        read = self.app.get(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+        )
+
+        self.assertEqual(read.json, expected)
+
+    @responses.activate
+    @freeze_time(datetime.datetime.fromtimestamp(5.0, tz=pytz.utc))
+    def test_flag_completed(self):
+        """
+        It is possible to flag a todo item as completed.
+        """
+        create = self.app.post(
+            '/todos',
+            content_type='application/json',
+            data=json.dumps(NOT_COMPLETED_TODO_DATA),
+        )
+
+        patch = self.app.patch(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+            data=json.dumps({'completed': True}),
+        )
+
+        expected = create.json
+        expected['completed'] = True
+        # Timestamp set to now, the time it is first marked completed.
+        expected['completion_timestamp'] = 5.0
+
+        self.assertEqual(patch.status_code, codes.OK)
+        self.assertEqual(patch.json, expected)
+
+        read = self.app.get(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+        )
+
+        self.assertEqual(read.json, expected)
+
+    @responses.activate
+    def test_flag_not_completed(self):
+        """
+        It is possible to flag a todo item as not completed.
+        """
+        create = self.app.post(
+            '/todos',
+            content_type='application/json',
+            data=json.dumps(COMPLETED_TODO_DATA),
+        )
+
+        patch = self.app.patch(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+            data=json.dumps({'completed': False}),
+        )
+
+        expected = create.json
+        expected['completed'] = False
+        # Marking an item as not completed removes the completion timestamp.
+        expected['completion_timestamp'] = None
+
+        self.assertEqual(patch.status_code, codes.OK)
+        self.assertEqual(patch.json, expected)
+
+        read = self.app.get(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+        )
+
+        self.assertEqual(read.json, expected)
+
+    @responses.activate
+    def test_change_content_and_flag(self):
+        """
+        It is possible to change the content of a todo item, as well as marking
+        the item as completed.
+        """
+        create = self.app.post(
+            '/todos',
+            content_type='application/json',
+            data=json.dumps(NOT_COMPLETED_TODO_DATA),
+        )
+
+        new_content = 'Book vacation'
+
+        patch = self.app.patch(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+            data=json.dumps({'content': new_content, 'completed': False}),
+        )
+
+        expected = create.json
+        expected['content'] = new_content
+        expected['completed'] = False
+        expected['completion_timestamp'] = None
+
+        self.assertEqual(patch.status_code, codes.OK)
+        self.assertEqual(patch.json, expected)
+
+        read = self.app.get(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+        )
+
+        self.assertEqual(read.json, expected)
+
+    @responses.activate
+    def test_flag_completed_already_completed(self):
+        """
+        Flagging an already completed item as completed does not change the
+        completion timestamp.
+        """
+        create_time = datetime.datetime.fromtimestamp(5.0, tz=pytz.utc)
+        with freeze_time(create_time):
+            create = self.app.post(
+                '/todos',
+                content_type='application/json',
+                data=json.dumps(COMPLETED_TODO_DATA),
+            )
+
+        patch_time = datetime.datetime.fromtimestamp(6.0, tz=pytz.utc)
+        with freeze_time(patch_time):
+            patch = self.app.patch(
+                '/todos/{id}'.format(id=create.json['id']),
+                content_type='application/json',
+                data=json.dumps({'completed': True}),
+            )
+
+        expected = create.json
+        # Timestamp set to the time it is first marked completed.
+        expected['completion_timestamp'] = 5.0
+
+        self.assertEqual(patch.status_code, codes.OK)
+        self.assertEqual(patch.json, expected)
+
+        read = self.app.get(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+        )
+
+        self.assertEqual(read.json, expected)
+
+    @responses.activate
+    def test_remain_same(self):
+        """
+        Not requesting any changes keeps the item the same.
+        """
+        create = self.app.post(
+            '/todos',
+            content_type='application/json',
+            data=json.dumps(COMPLETED_TODO_DATA),
+        )
+
+        patch = self.app.patch(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+            data=json.dumps({}),
+        )
+
+        self.assertEqual(create.json, patch.json)
+
+    @responses.activate
+    def test_non_existant(self):
+        """
+        If the todo item to be updated does not exist, a ``NOT_FOUND`` error is
+        returned.
+        """
+        response = self.app.patch('/todos/1', content_type='application/json')
+
+        self.assertEqual(response.headers['Content-Type'], 'application/json')
+        self.assertEqual(response.status_code, codes.NOT_FOUND)
+        expected = {
+            'title': 'The requested todo does not exist.',
+            'detail': 'No todo exists with the id "1"',
+        }
+        self.assertEqual(response.json, expected)
+
+    def test_incorrect_content_type(self):
+        """
+        If a Content-Type header other than 'application/json' is given, an
+        UNSUPPORTED_MEDIA_TYPE status code is given.
+        """
+        response = self.app.patch('/todos/1', content_type='text/html')
+        self.assertEqual(response.status_code, codes.UNSUPPORTED_MEDIA_TYPE)
diff --git a/storage/tests/test_storage.py b/storage/tests/test_storage.py
index aef8af7..f8c2c90 100644
--- a/storage/tests/test_storage.py
+++ b/storage/tests/test_storage.py
@@ -574,3 +574,166 @@ class ListTodosTests(InMemoryStorageTests):
         """
         response = self.storage_app.get('/todos', content_type='text/html')
         self.assertEqual(response.status_code, codes.UNSUPPORTED_MEDIA_TYPE)
+
+
+class UpdateTodoTests(InMemoryStorageTests):
+    """
+    Tests for updating a todo item at ``PATCH /todos/{id}.``.
+    """
+
+    def test_change_content(self):
+        """
+        It is possible to change the content of a todo item.
+        """
+        create = self.storage_app.post(
+            '/todos',
+            content_type='application/json',
+            data=json.dumps(NOT_COMPLETED_TODO_DATA),
+        )
+
+        new_content = 'Book vacation'
+
+        patch = self.storage_app.patch(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+            data=json.dumps({'content': new_content}),
+        )
+
+        expected = NOT_COMPLETED_TODO_DATA.copy()
+        expected['content'] = new_content
+        expected['completion_timestamp'] = None
+        expected['id'] = create.json['id']
+
+        self.assertEqual(patch.status_code, codes.OK)
+        self.assertEqual(patch.json, expected)
+
+        read = self.storage_app.get(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+        )
+
+        self.assertEqual(read.json, expected)
+
+    def test_flag_completed(self):
+        """
+        It is possible to flag a todo item as completed.
+        """
+        create = self.storage_app.post(
+            '/todos',
+            content_type='application/json',
+            data=json.dumps(NOT_COMPLETED_TODO_DATA),
+        )
+
+        patch = self.storage_app.patch(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+            data=json.dumps({'completed': True, 'completion_timestamp': 2.0}),
+        )
+
+        expected = NOT_COMPLETED_TODO_DATA.copy()
+        expected['completed'] = True
+        expected['completion_timestamp'] = 2
+        expected['id'] = create.json['id']
+
+        self.assertEqual(patch.status_code, codes.OK)
+        self.assertEqual(patch.json, expected)
+
+        read = self.storage_app.get(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+        )
+
+        self.assertEqual(read.json, expected)
+
+    def test_flag_not_completed(self):
+        """
+        It is possible to flag a todo item as not completed.
+        """
+        create = self.storage_app.post(
+            '/todos',
+            content_type='application/json',
+            data=json.dumps(COMPLETED_TODO_DATA),
+        )
+
+        patch = self.storage_app.patch(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+            data=json.dumps(
+                {'completed': False, 'completion_timestamp': None}),
+        )
+
+        expected = COMPLETED_TODO_DATA.copy()
+        expected['completed'] = False
+        expected['completion_timestamp'] = None
+        expected['id'] = create.json['id']
+
+        self.assertEqual(patch.status_code, codes.OK)
+        self.assertEqual(patch.json, expected)
+
+        read = self.storage_app.get(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+        )
+
+        self.assertEqual(read.json, expected)
+
+    def test_change_content_and_flag(self):
+        """
+        It is possible to change the content of a todo item, as well as marking
+        the item as completed.
+        """
+        create = self.storage_app.post(
+            '/todos',
+            content_type='application/json',
+            data=json.dumps(NOT_COMPLETED_TODO_DATA),
+        )
+
+        new_content = 'Book vacation'
+
+        patch = self.storage_app.patch(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+            data=json.dumps({'content': new_content, 'completed': False}),
+        )
+
+        expected = NOT_COMPLETED_TODO_DATA.copy()
+        expected['content'] = new_content
+        expected['completed'] = False
+        expected['completion_timestamp'] = None
+        expected['id'] = create.json['id']
+
+        self.assertEqual(patch.status_code, codes.OK)
+        self.assertEqual(patch.json, expected)
+
+        read = self.storage_app.get(
+            '/todos/{id}'.format(id=create.json['id']),
+            content_type='application/json',
+        )
+
+        self.assertEqual(read.json, expected)
+
+    def test_non_existant(self):
+        """
+        If the todo item to be updated does not exist, a ``NOT_FOUND`` error is
+        returned.
+        """
+        response = self.storage_app.patch(
+            '/todos/1',
+            content_type='application/json',
+        )
+
+        self.assertEqual(response.headers['Content-Type'], 'application/json')
+        self.assertEqual(response.status_code, codes.NOT_FOUND)
+        expected = {
+            'title': 'The requested todo does not exist.',
+            'detail': 'No todo exists with the id "1"',
+        }
+        self.assertEqual(response.json, expected)
+
+    def test_incorrect_content_type(self):
+        """
+        If a Content-Type header other than 'application/json' is given, an
+        UNSUPPORTED_MEDIA_TYPE status code is given.
+        """
+        response = self.storage_app.patch('/todos/1', content_type='text/html')
+        self.assertEqual(response.status_code, codes.UNSUPPORTED_MEDIA_TYPE)

pip install -e .[dev]
parse_log_pytest
requirements.txt
pytest pytest-cov pytest-xdist pytest-mock pytest-asyncio
3.5
requirements.txt dev-requirements.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
alabaster==0.7.13
attrs==22.2.0
Babel==2.11.0
bcrypt==4.0.1
certifi==2021.5.30
coverage==6.2
coveralls==3.3.1
dataclasses==0.8
doc8==0.11.2
docopt==0.6.2
docutils==0.18.1
execnet==1.9.0
flake8==3.9.2
Flask==0.10.1
Flask-Bcrypt==0.7.1
Flask-JsonSchema==0.1.1
Flask-Login==0.3.2
Flask-Negotiate==0.1.0
Flask-SQLAlchemy==2.1
Flask-Testing==0.8.1
freezegun==1.2.2
greenlet==2.0.2
imagesize==1.4.1
importlib-metadata==4.8.3
iniconfig==1.1.1
itsdangerous==2.0.1
Jinja2==3.0.3
jsonschema==3.2.0
MarkupSafe==2.0.1
mccabe==0.6.1
packaging==21.3
pbr==6.1.1
pluggy==1.0.0
py==1.11.0
pycodestyle==2.7.0
pyflakes==2.3.1
Pygments==2.14.0
pyparsing==3.1.4
pyrsistent==0.18.0
pytest==7.0.1
pytest-asyncio==0.16.0
pytest-cov==4.0.0
pytest-mock==3.6.1
pytest-xdist==3.0.2
python-dateutil==2.9.0.post0
pytz==2016.4
-e git+https://github.com/adamtheturtle/todo.git@736849d28dacdf6112fe2bef70aec1b6ceced636#egg=Qlutter_TODOer
requests==2.10.0
responses==0.17.0
restructuredtext-lint==1.4.0
six==1.17.0
snowballstemmer==2.2.0
Sphinx==5.3.0
sphinx-rtd-theme==2.0.0
sphinxcontrib-applehelp==1.0.2
sphinxcontrib-devhelp==1.0.2
sphinxcontrib-htmlhelp==2.0.0
sphinxcontrib-httpdomain==1.8.1
sphinxcontrib-jquery==4.1
sphinxcontrib-jsmath==1.0.1
sphinxcontrib-qthelp==1.0.3
sphinxcontrib-serializinghtml==1.1.5
SQLAlchemy==1.4.54
stevedore==3.5.2
tomli==1.2.3
typing_extensions==4.1.1
urllib3==1.26.20
Werkzeug==2.0.3
zipp==3.6.0

name: todo
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2021.5.30=py36h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.3=he6710b0_2
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=1.1.1w=h7f8727e_0
  - pip=21.2.2=py36h06a4308_0
  - python=3.6.13=h12debd9_1
  - readline=8.2=h5eee18b_0
  - setuptools=58.0.4=py36h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - wheel=0.37.1=pyhd3eb1b0_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - alabaster==0.7.13
      - attrs==22.2.0
      - babel==2.11.0
      - bcrypt==4.0.1
      - coverage==6.2
      - coveralls==3.3.1
      - dataclasses==0.8
      - doc8==0.11.2
      - docopt==0.6.2
      - docutils==0.18.1
      - execnet==1.9.0
      - flake8==3.9.2
      - flask==0.10.1
      - flask-bcrypt==0.7.1
      - flask-jsonschema==0.1.1
      - flask-login==0.3.2
      - flask-negotiate==0.1.0
      - flask-sqlalchemy==2.1
      - flask-testing==0.8.1
      - freezegun==1.2.2
      - greenlet==2.0.2
      - imagesize==1.4.1
      - importlib-metadata==4.8.3
      - iniconfig==1.1.1
      - itsdangerous==2.0.1
      - jinja2==3.0.3
      - jsonschema==3.2.0
      - markupsafe==2.0.1
      - mccabe==0.6.1
      - packaging==21.3
      - pbr==6.1.1
      - pluggy==1.0.0
      - py==1.11.0
      - pycodestyle==2.7.0
      - pyflakes==2.3.1
      - pygments==2.14.0
      - pyparsing==3.1.4
      - pyrsistent==0.18.0
      - pytest==7.0.1
      - pytest-asyncio==0.16.0
      - pytest-cov==4.0.0
      - pytest-mock==3.6.1
      - pytest-xdist==3.0.2
      - python-dateutil==2.9.0.post0
      - pytz==2016.4
      - requests==2.10.0
      - responses==0.17.0
      - restructuredtext-lint==1.4.0
      - six==1.17.0
      - snowballstemmer==2.2.0
      - sphinx==5.3.0
      - sphinx-rtd-theme==2.0.0
      - sphinxcontrib-applehelp==1.0.2
      - sphinxcontrib-devhelp==1.0.2
      - sphinxcontrib-htmlhelp==2.0.0
      - sphinxcontrib-httpdomain==1.8.1
      - sphinxcontrib-jquery==4.1
      - sphinxcontrib-jsmath==1.0.1
      - sphinxcontrib-qthelp==1.0.3
      - sphinxcontrib-serializinghtml==1.1.5
      - sqlalchemy==1.4.54
      - stevedore==3.5.2
      - tomli==1.2.3
      - typing-extensions==4.1.1
      - urllib3==1.26.20
      - werkzeug==2.0.3
      - zipp==3.6.0
prefix: /opt/conda/envs/todo

authentication/tests/test_authentication.py::UpdateTodoTests::test_incorrect_content_type storage/tests/test_storage.py::UpdateTodoTests::test_incorrect_content_type
authentication/tests/test_authentication.py::SignupTests::test_existing_user authentication/tests/test_authentication.py::SignupTests::test_missing_email authentication/tests/test_authentication.py::SignupTests::test_missing_password authentication/tests/test_authentication.py::SignupTests::test_passwords_hashed authentication/tests/test_authentication.py::SignupTests::test_signup authentication/tests/test_authentication.py::LoginTests::test_login authentication/tests/test_authentication.py::LoginTests::test_missing_email authentication/tests/test_authentication.py::LoginTests::test_missing_password authentication/tests/test_authentication.py::LoginTests::test_non_existant_user authentication/tests/test_authentication.py::LoginTests::test_remember_me_cookie_set authentication/tests/test_authentication.py::LoginTests::test_wrong_password authentication/tests/test_authentication.py::LogoutTests::test_logout authentication/tests/test_authentication.py::LogoutTests::test_logout_twice authentication/tests/test_authentication.py::LoadUserTests::test_user_does_not_exist authentication/tests/test_authentication.py::LoadUserTests::test_user_exists authentication/tests/test_authentication.py::LoadUserFromTokenTests::test_fake_token authentication/tests/test_authentication.py::LoadUserFromTokenTests::test_load_user_from_token authentication/tests/test_authentication.py::CreateTodoTests::test_current_completion_time authentication/tests/test_authentication.py::CreateTodoTests::test_missing_completed_flag authentication/tests/test_authentication.py::CreateTodoTests::test_missing_text authentication/tests/test_authentication.py::CreateTodoTests::test_success_response authentication/tests/test_authentication.py::ReadTodoTests::test_completed authentication/tests/test_authentication.py::ReadTodoTests::test_multiple_todos authentication/tests/test_authentication.py::ReadTodoTests::test_non_existant authentication/tests/test_authentication.py::ReadTodoTests::test_success authentication/tests/test_authentication.py::DeleteTodoTests::test_delete_twice authentication/tests/test_authentication.py::DeleteTodoTests::test_success authentication/tests/test_authentication.py::ListTodosTests::test_filter_completed authentication/tests/test_authentication.py::ListTodosTests::test_filter_not_completed authentication/tests/test_authentication.py::ListTodosTests::test_list authentication/tests/test_authentication.py::ListTodosTests::test_no_todos authentication/tests/test_authentication.py::UpdateTodoTests::test_change_content authentication/tests/test_authentication.py::UpdateTodoTests::test_change_content_and_flag authentication/tests/test_authentication.py::UpdateTodoTests::test_flag_completed authentication/tests/test_authentication.py::UpdateTodoTests::test_flag_completed_already_completed authentication/tests/test_authentication.py::UpdateTodoTests::test_flag_not_completed authentication/tests/test_authentication.py::UpdateTodoTests::test_non_existant authentication/tests/test_authentication.py::UpdateTodoTests::test_remain_same storage/tests/test_storage.py::CreateUserTests::test_existing_user storage/tests/test_storage.py::CreateUserTests::test_missing_email storage/tests/test_storage.py::CreateUserTests::test_missing_password_hash storage/tests/test_storage.py::CreateUserTests::test_success_response storage/tests/test_storage.py::GetUserTests::test_non_existant_user storage/tests/test_storage.py::GetUserTests::test_success storage/tests/test_storage.py::GetUsersTests::test_with_users storage/tests/test_storage.py::CreateTodoTests::test_missing_completed_flag storage/tests/test_storage.py::CreateTodoTests::test_missing_completion_time storage/tests/test_storage.py::CreateTodoTests::test_missing_text storage/tests/test_storage.py::CreateTodoTests::test_success_response storage/tests/test_storage.py::GetTodoTests::test_non_existant storage/tests/test_storage.py::GetTodoTests::test_success storage/tests/test_storage.py::GetTodoTests::test_timestamp_null storage/tests/test_storage.py::DeleteTodoTests::test_delete_twice storage/tests/test_storage.py::DeleteTodoTests::test_success storage/tests/test_storage.py::ListTodosTests::test_filter_completed storage/tests/test_storage.py::ListTodosTests::test_filter_not_completed storage/tests/test_storage.py::ListTodosTests::test_list storage/tests/test_storage.py::ListTodosTests::test_no_todos storage/tests/test_storage.py::UpdateTodoTests::test_change_content storage/tests/test_storage.py::UpdateTodoTests::test_change_content_and_flag storage/tests/test_storage.py::UpdateTodoTests::test_flag_completed storage/tests/test_storage.py::UpdateTodoTests::test_flag_not_completed storage/tests/test_storage.py::UpdateTodoTests::test_non_existant
authentication/tests/test_authentication.py::SignupTests::test_incorrect_content_type authentication/tests/test_authentication.py::LoginTests::test_incorrect_content_type authentication/tests/test_authentication.py::LogoutTests::test_incorrect_content_type authentication/tests/test_authentication.py::LogoutTests::test_not_logged_in authentication/tests/test_authentication.py::UserTests::test_different_password_different_token authentication/tests/test_authentication.py::UserTests::test_get_auth_token authentication/tests/test_authentication.py::UserTests::test_get_id authentication/tests/test_authentication.py::CreateTodoTests::test_incorrect_content_type authentication/tests/test_authentication.py::ReadTodoTests::test_incorrect_content_type authentication/tests/test_authentication.py::DeleteTodoTests::test_incorrect_content_type authentication/tests/test_authentication.py::ListTodosTests::test_incorrect_content_type storage/tests/test_storage.py::CreateUserTests::test_incorrect_content_type storage/tests/test_storage.py::GetUserTests::test_incorrect_content_type storage/tests/test_storage.py::GetUsersTests::test_incorrect_content_type storage/tests/test_storage.py::GetUsersTests::test_no_users storage/tests/test_storage.py::CreateTodoTests::test_incorrect_content_type storage/tests/test_storage.py::GetTodoTests::test_incorrect_content_type storage/tests/test_storage.py::DeleteTodoTests::test_incorrect_content_type storage/tests/test_storage.py::ListTodosTests::test_incorrect_content_type
storage/storage.py authentication/authentication.py
storage/storage.py authentication/authentication.py