add help command

tests/ahriman/application/handlers/test_handler_help.py

@@ -0,0 +1,41 @@
+import argparse
+
+from pytest_mock import MockerFixture
+
+from ahriman.application.ahriman import _parser
+from ahriman.application.handlers import Help
+from ahriman.core.configuration import Configuration
+
+
+def _default_args(args: argparse.Namespace) -> argparse.Namespace:
+    """
+    default arguments for these test cases
+    :param args: command line arguments fixture
+    :return: generated arguments for these test cases
+    """
+    args.parser = _parser
+    args.command = None
+    return args
+
+
+def test_run(args: argparse.Namespace, configuration: Configuration, mocker: MockerFixture) -> None:
+    """
+    must run command
+    """
+    args = _default_args(args)
+    parse_mock = mocker.patch("argparse.ArgumentParser.parse_args")
+
+    Help.run(args, "x86_64", configuration, True, False)
+    parse_mock.assert_called_once_with(["--help"])
+
+
+def test_run_command(args: argparse.Namespace, configuration: Configuration, mocker: MockerFixture) -> None:
+    """
+    must run command for specific subcommand
+    """
+    args = _default_args(args)
+    args.command = "aur-search"
+    parse_mock = mocker.patch("argparse.ArgumentParser.parse_args")
+
+    Help.run(args, "x86_64", configuration, True, False)
+    parse_mock.assert_called_once_with(["aur-search", "--help"])