Fix: Make cpe_last_modified of CPE matches optional

Author: timopollmeier

pontos/nvd/models/cpe_match_string.py

@@ -38,7 +38,7 @@ class CPEMatchString(Model):
         version_end_including: Optional end of the matching version range, including the given version
         version_end_excluding: Optional end of the matching version range, excluding the given version
         status: Status of the CPE match
-        cpe_last_modified: The date the CPEs list of the match was last modified
+        cpe_last_modified: Optional date the CPEs list of the match was last modified
         created: Creation date of the CPE
         last_modified: Last modification date of the CPE
         matches: List of CPEs matching the criteria string and the optional range limits
@@ -47,9 +47,9 @@ class CPEMatchString(Model):
     match_criteria_id: UUID
     criteria: str
     status: str
-    cpe_last_modified: datetime
     created: datetime
     last_modified: datetime
+    cpe_last_modified: Optional[datetime] = None
     matches: List[CPEMatch] = field(default_factory=list)
     version_start_including: Optional[str] = None
     version_start_excluding: Optional[str] = None

tests/nvd/models/test_cpe_match.py

@@ -22,6 +22,7 @@ def test_required_only(self):
         data = get_cpe_match_data()
         data.__delitem__("matches")
         data.__delitem__("version_end_including")
+        data.__delitem__("cpe_last_modified")
 
         cpe_match_string = CPEMatchString.from_dict(data)
 
@@ -37,10 +38,6 @@ def test_required_only(self):
             "Active",
             cpe_match_string.status,
         )
-        self.assertEqual(
-            datetime(2019, 7, 22, 16, 37, 38, 133000, tzinfo=timezone.utc),
-            cpe_match_string.cpe_last_modified,
-        )
         self.assertEqual(
             datetime(2019, 6, 17, 9, 16, 33, 960000, tzinfo=timezone.utc),
             cpe_match_string.created,
@@ -52,11 +49,21 @@ def test_required_only(self):
 
         self.assertEqual([], cpe_match_string.matches)
 
+        self.assertIsNone(cpe_match_string.cpe_last_modified)
         self.assertIsNone(cpe_match_string.version_start_excluding)
         self.assertIsNone(cpe_match_string.version_end_excluding)
         self.assertIsNone(cpe_match_string.version_start_including)
         self.assertIsNone(cpe_match_string.version_end_including)
 
+    def test_cpe_last_modified(self):
+        data = get_cpe_match_data()
+        cpe_match_string = CPEMatchString.from_dict(data)
+
+        self.assertEqual(
+            datetime(2019, 7, 22, 16, 37, 38, 133000, tzinfo=timezone.utc),
+            cpe_match_string.cpe_last_modified,
+        )
+
     def test_matches(self):
         """
         Test the matches list of a CPEMatchString