def _predicate(extension: Extension) -> bool:
extension_parts = extension.name.split(':', maxsplit=4)
if len(extension_parts) < 3:
raise DataStoreError(
f'Illegal data opener/writer extension name "{extension.name}"'
)
extension_type = TypeSpecifier.parse(extension_parts[0])
type_ok = type_specifier is None or extension_type == TYPE_SPECIFIER_ANY or \
extension_type == TypeSpecifier.normalize(type_specifier)
format_ok = format_id is None or extension_parts[
1] == '*' or extension_parts[1] == format_id
storage_ok = storage_id is None or extension_parts[
2] == '*' or extension_parts[2] == storage_id
return type_ok and format_ok and storage_ok
def test_parse_exception(self):
with self.assertRaises(SyntaxError) as cm:
TypeSpecifier.parse('An unparseable expression[')
self.assertEqual(
'"An unparseable expression[" cannot be parsed: No end brackets found',
f'{cm.exception}')
def test_parse(self):
self.assertEqual(TypeSpecifier('*'), TypeSpecifier.parse('*'))
self.assertEqual(TypeSpecifier('dataset'),
TypeSpecifier.parse('dataset'))
self.assertEqual(TypeSpecifier('dataset', {'cube', 'multilevel'}),
TypeSpecifier.parse('dataset[cube,multilevel]'))
