def test_property_prefixes(self):
namespaces = Namespaces()
namespaces.add_all({
"b": "bar",
None: "http://www.w3.org/2001/XMLSchema",
"foo": "http://www.w3.org/2001/XMLSchema-instance",
})
self.assertEqual(["b", "xs", "xsi"], namespaces.prefixes)
self.assertEqual("b", namespaces.prefix("bar"))
self.assertEqual("xs",
namespaces.prefix("http://www.w3.org/2001/XMLSchema"))
self.assertIsNone(namespaces.prefix("http://xsdata"))
def qname_to_xml(qname: QName, namespaces: Namespaces) -> str:
namespaces.add(qname.namespace)
prefix = namespaces.prefix(qname.namespace)
return f"{prefix}:{qname.localname}" if prefix else qname.localname