import os.path
import pkgutil

import rdflib

"""
Test module naming conventions

modules should all be lower-case initial
"""


class TestA:
    def module_names(self, path=None, names=None, parent=""):
        skip_as_ignorably_private = ["embeddedRDF", "OpenID", "DublinCore", "RDFVOC"]

        if path is None:
            path = rdflib.__path__
        if names is None:
            names = set()

            # TODO: handle cases where len(path) is not 1
            assert (
                len(path) == 1
            ), "We're assuming the path has exactly one item in it for now"
            path = path[0]

        for importer, name, ispkg in pkgutil.iter_modules([path]):
            if ispkg:
                result = self.module_names(
                    path=os.path.join(path, name), names=names, parent=name
                )
                names.union(result)
            else:
                # namespaces are an exception to this rule
                if (
                    name != name.lower()
                    and name not in skip_as_ignorably_private
                    and parent != "namespace"
                ):
                    names.add(name)
        return names

    def test_module_names(self):
        names = self.module_names()
        assert names == set(), "module names '%s' are not lower case" % names