Files
hermes-agent/tests/test_fast_safe_load.py
ethernet 16652eea18 Merge remote-tracking branch 'origin/main' into ethie/pm-clean
# Conflicts:
#	gateway/config.py
#	gateway/config_loader.py
#	gateway/readiness.py
#	hermes_cli/managed_scope.py
#	hermes_cli/plugin_python_deps.py
#	hermes_cli/plugins_cmd.py
#	hermes_cli/update_cmd_maint.py
#	plugin-catalog/hindsight.yaml
#	plugins/plugin_loader.py
#	providers/__init__.py
#	scripts/run_tests.sh
#	tests/gateway/test_control_socket_windows_live.py
#	tests/gateway/test_gateway_streaming_nested_config.py
#	tests/hermes_cli/test_doctor.py
#	tests/hermes_cli/test_plan_reconciliation_windows_live.py
#	tests/hermes_cli/test_update_apply_shallow_count.py
#	tests/hermes_cli/test_update_concurrent_quarantine.py
#	tests/hermes_cli/test_update_shim_self_lock.py
#	tests/hermes_cli/test_verify_console_scripts.py
#	tests/tools/test_lazy_deps.py
#	tests/tui_gateway/test_subprocess_encoding.py
#	tools/lazy_deps.py
2026-09-23 15:26:34 -04:00

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Python

"""Invariants for utils.fast_safe_load.
fast_safe_load is a drop-in for yaml.safe_load that prefers the libyaml
CSafeLoader C extension for speed. These tests assert the behavior contract
(it parses identically to safe_load across input shapes), not a snapshot of
any particular document.
"""
import io
import hermes_yaml as yaml
from utils import fast_safe_load
_DOCS = [
"", # empty document -> None
"a: 1\nb: two\nc: 3.5\n",
"list: [1, 2, 3]\nnested:\n k: v\n flag: true\n empty: null\n",
"name: skill-x\nmetadata:\n hermes:\n tags: [alpha, beta]\n category: devops\n",
"- one\n- two\n- three\n", # top-level sequence
"scalar string", # bare scalar
]
def test_equivalent_to_safe_load_for_strings():
for doc in _DOCS:
assert fast_safe_load(doc) == yaml.safe_load(doc), repr(doc)
def test_equivalent_to_safe_load_for_file_objects():
for doc in _DOCS:
assert fast_safe_load(io.StringIO(doc)) == yaml.safe_load(io.StringIO(doc)), repr(doc)
def test_rejects_arbitrary_python_objects_like_safe_load():
# Safe loaders must not construct arbitrary Python objects. This tag is
# accepted by the unsafe Loader but rejected by Safe/CSafe loaders.
dangerous = "!!python/object/apply:os.system ['echo pwned']\n"
try:
fast_safe_load(dangerous)
raised = False
except yaml.YAMLError:
raised = True
assert raised, "fast_safe_load must reject python/object tags like safe_load"