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66 lines
2.4 KiB
Python
66 lines
2.4 KiB
Python
"""Tests for the defensive subparser routing workaround (bpo-9338).
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The main() function in hermes_cli/main.py sets subparsers.required=True
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when argv contains a known subcommand name. This forces deterministic
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routing on Python versions where argparse fails to match subcommand tokens
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when the parent parser has nargs='?' optional arguments (--continue).
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If the subcommand token is consumed as a flag value (e.g. `hermes -c model`
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to resume a session named 'model'), the required=True parse raises
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SystemExit and the code falls back to the default required=False behaviour.
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"""
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import argparse
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import io
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import sys
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def _build_parser():
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"""Build a minimal replica of the hermes top-level parser."""
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parser = argparse.ArgumentParser(prog="hermes")
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parser.add_argument("--version", "-V", action="store_true")
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parser.add_argument("--resume", "-r", metavar="SESSION", default=None)
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parser.add_argument(
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"--continue", "-c",
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dest="continue_last",
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nargs="?",
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const=True,
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default=None,
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metavar="SESSION_NAME",
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)
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parser.add_argument("--worktree", "-w", action="store_true", default=False)
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parser.add_argument("--skills", "-s", action="append", default=None)
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parser.add_argument("--yolo", action="store_true", default=False)
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parser.add_argument("--pass-session-id", action="store_true", default=False)
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subparsers = parser.add_subparsers(dest="command", help="Command to run")
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chat_p = subparsers.add_parser("chat")
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chat_p.add_argument("-q", "--query", default=None)
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subparsers.add_parser("model")
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subparsers.add_parser("gateway")
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subparsers.add_parser("setup")
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return parser, subparsers
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def _safe_parse(parser, subparsers, argv):
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"""Replica of the defensive parsing logic from main()."""
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known_cmds = set(subparsers.choices.keys()) if hasattr(subparsers, "choices") else set()
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has_cmd_token = any(t in known_cmds for t in argv if not t.startswith("-"))
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if has_cmd_token:
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subparsers.required = True
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saved_stderr = sys.stderr
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try:
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sys.stderr = io.StringIO()
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args = parser.parse_args(argv)
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sys.stderr = saved_stderr
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return args
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except SystemExit:
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sys.stderr = saved_stderr
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subparsers.required = False
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return parser.parse_args(argv)
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else:
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subparsers.required = False
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return parser.parse_args(argv)
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