mirror-linux/tools/unittests/test_kdoc_test_schema.py

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#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0
"""
Unittest driver for kerneldoc YAML tests.
Two kinds of tests are defined:
* **Schemavalidation tests** if ``jsonschema`` is available, the
YAML files in this directory are validated against the JSONSchema
described in ``kdoc-test-schema.yaml``. When the library is not
present, a warning is emitted and the validation step is simply
skipped the dynamic kerneldoc tests still run.
* **Kerneldoc tests** dynamically generate one test method per
scenario in ``kdoc-test.yaml``. Each method simply forwards
the data to ``self.run_test`` you only need to implement that
helper in your own code.
File names are kept as modulelevel constants so that the
implementation stays completely independent of ``pathlib``.
"""
import os
import sys
import warnings
import yaml
import unittest
from typing import Any, Dict, List
SRC_DIR = os.path.dirname(os.path.realpath(__file__))
sys.path.insert(0, os.path.join(SRC_DIR, "../lib/python"))
from unittest_helper import run_unittest
#
# Files to read
#
BASE = os.path.realpath(os.path.dirname(__file__))
SCHEMA_FILE = os.path.join(BASE, "kdoc-test-schema.yaml")
TEST_FILE = os.path.join(BASE, "kdoc-test.yaml")
#
# Schemavalidation test
#
class TestYAMLSchemaValidation(unittest.TestCase):
"""
Checks if TEST_FILE matches SCHEMA_FILE.
"""
@classmethod
def setUpClass(cls):
"""
Import jsonschema if available.
"""
try:
from jsonschema import Draft7Validator
except ImportError:
print("Warning: jsonschema package not available. Skipping schema validation")
cls.validator = None
return
with open(SCHEMA_FILE, encoding="utf-8") as fp:
cls.schema = yaml.safe_load(fp)
cls.validator = Draft7Validator(cls.schema)
def test_kdoc_test_yaml_followsschema(self):
"""
Run jsonschema validation if the validator is available.
If not, emit a warning and return without failing.
"""
if self.validator is None:
return
with open(TEST_FILE, encoding="utf-8") as fp:
data = yaml.safe_load(fp)
errors = self.validator.iter_errors(data)
msgs = []
for error in errors:
msgs.append(error.message)
if msgs:
self.fail("Schema validation failed:\n\t" + "\n\t".join(msgs))
# --------------------------------------------------------------------
# Entry point
# --------------------------------------------------------------------
if __name__ == "__main__":
run_unittest(__file__)