feat: allow empty OrganizationalContact object (#772)

fixes #771

---------

Signed-off-by: Johannes Feichtner <[email protected]>
Signed-off-by: Johannes Feichtner <[email protected]>

Author: Churro

cyclonedx/model/contact.py

@@ -23,7 +23,6 @@
 
 from .._internal.bom_ref import bom_ref_from_str as _bom_ref_from_str
 from .._internal.compare import ComparableTuple as _ComparableTuple
-from ..exception.model import NoPropertiesProvidedException
 from ..schema.schema import SchemaVersion1Dot6
 from . import XsUri
 from .bom_ref import BomRef
@@ -202,10 +201,6 @@ def __init__(
         phone: Optional[str] = None,
         email: Optional[str] = None,
     ) -> None:
-        if not name and not phone and not email:
-            raise NoPropertiesProvidedException(
-                'One of name, email or phone must be supplied for an OrganizationalContact - none supplied.'
-            )
         self.name = name
         self.email = email
         self.phone = phone

tests/_data/own/json/1.6/issue771.json

@@ -88,6 +88,19 @@ def test(ls: LicenseRepository) -> None:
         test(list(bom.components)[0].licenses)
         test(list(bom.services)[0].licenses)
 
+    def test_regression_issue771(self) -> None:
+        """
+        regression test for issue#771.
+        see https://github.com/CycloneDX/cyclonedx-python-lib/issues/771
+        """
+        json_file = join(OWN_DATA_DIRECTORY, 'json',
+                         SchemaVersion.V1_6.to_version(),
+                         'issue771.json')
+        with open(json_file) as f:
+            json = json_loads(f.read())
+        bom: Bom = Bom.from_json(json)  # <<< is expected to not crash
+        self.assertIsNotNone(bom)
+
     def test_regression_issue764(self) -> None:
         """
         regression test for issue#764.