fix: allow suppliers with empty-string names (#611)

fixes #600

---------

Signed-off-by: Jan Kowalleck <jan.kowalleck@gmail.com>

cyclonedx/model/contact.py

@@ -279,7 +279,7 @@ class OrganizationalEntity:
     def __init__(self, *, name: Optional[str] = None, urls: Optional[Iterable[XsUri]] = None,
                  contacts: Optional[Iterable[OrganizationalContact]] = None,
                  address: Optional[PostalAddress] = None) -> None:
-        if not name and not urls and not contacts:
+        if name is None and not urls and not contacts:
             raise NoPropertiesProvidedException(
                 'One of name, urls or contacts must be supplied for an OrganizationalEntity - none supplied.'
             )

tests/test_deserialize_json.py

@@ -45,6 +45,16 @@ def test_prepared(self, get_bom: Callable[[], Bom], *_: Any, **__: Any) -> None:
         self.assertBomDeepEqual(expected, bom,
                                 fuzzy_deps=get_bom in all_get_bom_funct_with_incomplete_deps)
 
+    def test_empty_supplier(self) -> None:
+        """Regression for issue #600
+        See: https://github.com/CycloneDX/cyclonedx-python-lib/issues/600
+        """
+        json_file = join(OWN_DATA_DIRECTORY, 'json', '1.4', 'empty_supplier.json')
+        with open(json_file) as f:
+            json = json_loads(f.read())
+        bom = Bom.from_json(json)
+        self.assertIsInstance(bom, Bom)
+
     @data(SchemaVersion.V1_4, SchemaVersion.V1_3, SchemaVersion.V1_2)
     def test_mixed_licenses_before15(self, sv: SchemaVersion) -> None:
         # before CDX 1.5 it was allowed to mix `expression` and `license`