add sign command (#7) (#8)

tests/ahriman/application/handlers/test_handler_sign.py

@@ -0,0 +1,18 @@
+import argparse
+
+from pytest_mock import MockerFixture
+
+from ahriman.application.handlers import Sign
+from ahriman.core.configuration import Configuration
+
+
+def test_run(args: argparse.Namespace, configuration: Configuration, mocker: MockerFixture) -> None:
+    """
+    must run command
+    """
+    args.package = []
+    mocker.patch("pathlib.Path.mkdir")
+    application_mock = mocker.patch("ahriman.application.application.Application.sign")
+
+    Sign.run(args, "x86_64", configuration)
+    application_mock.assert_called_once()