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import os
from typing import Optional
from pkg_resources import Requirement, ResolutionError, resource_filename
from schema_salad import ref_resolver
def get_data(filename: str) -> Optional[str]:
"""Get the file path for a given schema file name.
It is able to find file names in the ``schema_salad`` namespace, but
also able to load schema files from the ``tests`` directory.
"""
filename = os.path.normpath(filename) # normalizing path depending on OS
# or else it will cause problem when joining path
filepath = None
try:
filepath = resource_filename(Requirement.parse("schema-salad"), filename)
except ResolutionError:
pass
if not filepath or not os.path.isfile(filepath):
# First try to load it from the local directory, probably ``./tests/``.
filepath = os.path.join(os.path.dirname(__file__), filename)
if not os.path.isfile(filepath):
# If that didn't work, then default to tests/../${filename},
# note that we return the parent as it is expected that __file__
# is a test file.
filepath = os.path.join(os.path.dirname(__file__), os.pardir, filename)
return filepath
def get_data_uri(resource_path: str) -> str:
"""Get the file URI for tests."""
path = get_data(resource_path)
assert path
return ref_resolver.file_uri(path)
# Schemas used in tests
cwl_file_uri = get_data_uri("tests/test_schema/CommonWorkflowLanguage.yml")
metaschema_file_uri = get_data_uri("metaschema/metaschema.yml")
basket_file_uri = get_data_uri("tests/basket_schema.yml")
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