hermes-hub/tests/test_import_invariants.py
2026-08-21 00:11:16 +07:00

133 lines
4.8 KiB
Python

"""Import invariants for the whole package.
Guards against two classes of rot that unit tests do not catch:
1. Dead-on-arrival modules — code that references project-internal names which
do not exist, so the module has never been imported by anything.
(Found in review: ``deepseek_adapter`` imported ``ProviderAdapter`` and
``ProfileConfig``, neither of which exists anywhere in ``src/``.)
2. Missing ``pytest.importorskip`` guards — a test module that imports an
optional UI dependency at module scope aborts collection of the ENTIRE
session instead of skipping itself.
Missing *third-party* optional dependencies (customtkinter, PIL, ...) are
skipped, not failed: those are legitimately absent in headless environments.
Broken *internal* references always fail.
"""
from __future__ import annotations
import ast
import importlib
import pkgutil
from pathlib import Path
import pytest
TESTS_DIR = Path(__file__).resolve().parent
# ``antigravity_provider`` is a PEP 420 namespace package whose ``__path__`` also
# contains the *installed* plugin copy under %LOCALAPPDATA%. Walk only the
# repository sources, so the suite never grades a different deployed version.
PACKAGE_ROOT = TESTS_DIR.parent / "src" / "antigravity_provider"
# Third-party packages that may legitimately be absent (GUI / optional extras).
OPTIONAL_EXTERNAL_MODULES = {
"customtkinter",
"tkinter",
"PIL",
"psutil",
"fastapi",
"uvicorn",
"pydantic",
}
def _iter_module_names() -> list[str]:
names: list[str] = []
for mod in pkgutil.walk_packages([str(PACKAGE_ROOT)], prefix="antigravity_provider."):
names.append(mod.name)
return sorted(names)
def _missing_external(exc: ImportError) -> str | None:
"""Return the optional third-party module name if *exc* is caused by one."""
name = getattr(exc, "name", None) or ""
root = name.split(".")[0]
if root in OPTIONAL_EXTERNAL_MODULES:
return root
return None
@pytest.mark.unit
@pytest.mark.parametrize("module_name", _iter_module_names())
def test_module_is_importable(module_name: str) -> None:
"""Every shipped module must import, or fail only on an absent optional extra."""
try:
importlib.import_module(module_name)
except ImportError as exc:
external = _missing_external(exc)
if external:
pytest.skip(f"optional dependency '{external}' not installed")
pytest.fail(
f"{module_name} is not importable — broken internal reference: {exc}\n"
"The module ships in the package but has never been executed by anything."
)
@pytest.mark.unit
def test_gui_test_modules_guard_optional_ui_dependency() -> None:
"""Test modules touching customtkinter must call pytest.importorskip.
Without the guard a headless environment aborts collection of the whole
session ("Interrupted: 1 error during collection") instead of skipping the
affected module, which takes the release gate down with it.
"""
# Modules that pull the GUI toolkit in transitively when imported.
GUI_BEARING_PREFIXES = (
"customtkinter",
"antigravity_provider.router.ui",
"antigravity_provider.router.hermes_hub_app",
)
def _imports_gui(tree: ast.AST) -> bool:
for node in ast.walk(tree):
if isinstance(node, ast.Import):
if any(a.name.startswith(GUI_BEARING_PREFIXES) for a in node.names):
return True
elif isinstance(node, ast.ImportFrom):
if (node.module or "").startswith(GUI_BEARING_PREFIXES):
return True
return False
offenders: list[str] = []
for path in sorted(TESTS_DIR.glob("test_*.py")):
text = path.read_text(encoding="utf-8", errors="ignore")
try:
tree = ast.parse(text)
except SyntaxError:
continue
# A mention in prose is not an import; only real imports need the guard.
if not _imports_gui(tree):
continue
if "importorskip" not in text:
offenders.append(path.name)
assert not offenders, (
"test modules import customtkinter without pytest.importorskip: "
+ ", ".join(offenders)
+ " — add pytest.importorskip('customtkinter') above the import"
)
@pytest.mark.unit
def test_antigravity_provider_loads_from_repo() -> None:
"""Verify that antigravity_provider is loaded from the repository src, not from %LOCALAPPDATA%."""
import antigravity_provider
import antigravity_provider.runtime
pkg_file = Path(antigravity_provider.__file__).resolve()
runtime_file = Path(antigravity_provider.runtime.__file__).resolve()
assert str(PACKAGE_ROOT.resolve()) in str(pkg_file) or str(PACKAGE_ROOT.resolve()) in str(pkg_file.parent)
assert str(PACKAGE_ROOT.resolve()) in str(runtime_file)