add docstrings for every fixture and test methods

also add tests for missing components

tests/ahriman/web/conftest.py

@@ -9,5 +9,11 @@ from ahriman.web.web import setup_service
 
 @pytest.fixture
 def application(configuration: Configuration, mocker: MockerFixture) -> web.Application:
+    """
+    application fixture
+    :param configuration: configuration fixture
+    :param mocker: mocker object
+    :return: application test instance
+    """
     mocker.patch("pathlib.Path.mkdir")
     return setup_service("x86_64", configuration)

tests/ahriman/web/middlewares/conftest.py

@@ -0,0 +1,15 @@
+import pytest
+
+from collections import namedtuple
+
+
+_request = namedtuple("_request", ["path"])
+
+
+@pytest.fixture
+def aiohttp_request() -> _request:
+    """
+    fixture for aiohttp like object
+    :return: aiohttp like request test instance
+    """
+    return _request("path")

tests/ahriman/web/middlewares/test_exception_handler.py

@@ -0,0 +1,48 @@
+import logging
+import pytest
+
+from aiohttp.web_exceptions import HTTPBadRequest
+from pytest_mock import MockerFixture
+from typing import Any
+
+from ahriman.web.middlewares.exception_handler import exception_handler
+
+
+async def test_exception_handler(aiohttp_request: Any, mocker: MockerFixture) -> None:
+    """
+    must pass success response
+    """
+    request_handler = pytest.helpers.AsyncMock()
+    logging_mock = mocker.patch("logging.Logger.exception")
+
+    handler = exception_handler(logging.getLogger())
+    await handler(aiohttp_request, request_handler)
+    logging_mock.assert_not_called()
+
+
+async def test_exception_handler_client_error(aiohttp_request: Any, mocker: MockerFixture) -> None:
+    """
+    must pass client exception
+    """
+    request_handler = pytest.helpers.AsyncMock()
+    request_handler.side_effect = HTTPBadRequest()
+    logging_mock = mocker.patch("logging.Logger.exception")
+
+    handler = exception_handler(logging.getLogger())
+    with pytest.raises(HTTPBadRequest):
+        await handler(aiohttp_request, request_handler)
+    logging_mock.assert_not_called()
+
+
+async def test_exception_handler_server_error(aiohttp_request: Any, mocker: MockerFixture) -> None:
+    """
+    must log server exception and re-raise it
+    """
+    request_handler = pytest.helpers.AsyncMock()
+    request_handler.side_effect = Exception()
+    logging_mock = mocker.patch("logging.Logger.exception")
+
+    handler = exception_handler(logging.getLogger())
+    with pytest.raises(Exception):
+        await handler(aiohttp_request, request_handler)
+    logging_mock.assert_called_once()

tests/ahriman/web/test_routes.py

@@ -0,0 +1,11 @@
+from aiohttp import web
+
+from ahriman.web.routes import setup_routes
+
+
+def test_setup_routes(application: web.Application) -> None:
+    """
+    must generate non empty list of routes
+    """
+    setup_routes(application)
+    assert application.router.routes()

tests/ahriman/web/views/conftest.py

@@ -10,5 +10,13 @@ from typing import Any
 @pytest.fixture
 def client(application: web.Application, loop: BaseEventLoop,
            aiohttp_client: Any, mocker: MockerFixture) -> TestClient:
+    """
+    web client fixture
+    :param application: application fixture
+    :param loop: context event loop
+    :param aiohttp_client: aiohttp client fixture
+    :param mocker: mocker object
+    :return: web client test instance
+    """
     mocker.patch("pathlib.Path.iterdir", return_value=[])
     return loop.run_until_complete(aiohttp_client(application))