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nanobot/tests/tools/test_exec_allow_patterns.py
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"""Tests for allow_patterns priority over deny_patterns."""
from __future__ import annotations
from nanobot.agent.tools.shell import ExecTool
def test_deny_patterns_block_rm_rf():
"""Baseline: rm -rf is blocked by default deny list."""
tool = ExecTool()
result = tool._guard_command("rm -rf /tmp/build", "/tmp")
assert result is not None
assert "deny pattern filter" in result.lower()
def test_allow_patterns_bypass_deny():
"""allow_patterns take priority: matching command skips deny check."""
tool = ExecTool(allow_patterns=[r"rm\s+-rf\s+/tmp/"])
result = tool._guard_command("rm -rf /tmp/build", "/tmp")
assert result is None
def test_allow_patterns_must_match_to_bypass():
"""Non-matching allow_patterns do NOT bypass deny."""
tool = ExecTool(allow_patterns=[r"rm\s+-rf\s+/opt/"])
result = tool._guard_command("rm -rf /tmp/build", "/tmp")
assert result is not None
assert "deny pattern filter" in result.lower()
def test_extra_deny_patterns_from_config():
"""User-supplied deny patterns are appended to built-in list."""
tool = ExecTool(deny_patterns=[r"\bping\b"])
# ping is blocked by extra deny
assert tool._guard_command("ping example.com", "/tmp") is not None
# rm -rf still blocked by built-in deny
assert tool._guard_command("rm -rf /tmp/x", "/tmp") is not None
def test_allow_patterns_bypass_extra_deny():
"""allow_patterns also bypasses user-supplied deny patterns."""
tool = ExecTool(
deny_patterns=[r"\bping\b"],
allow_patterns=[r"\bping\s+example\.com\b"],
)
result = tool._guard_command("ping example.com", "/tmp")
assert result is None
def test_allow_patterns_is_whitelist_only():
"""When allow_patterns is set, non-matching non-denied commands are blocked."""
tool = ExecTool(allow_patterns=[r"\becho\b"])
# echo matches allow → ok
assert tool._guard_command("echo hello", "/tmp") is None
# ls does not match allow and is not in deny → blocked by allowlist
result = tool._guard_command("ls /tmp", "/tmp")
assert result is not None
assert "allowlist" in result.lower()