Add a few more tests to exercise more complex property presence

constraint checking.

stix2/test/v21/test_location.py

@@ -265,6 +265,15 @@ def test_location_lat_or_lon_dependency_missing(data, msg):
     assert msg in str(excinfo.value)
 
 
+def test_location_complex_presence_constraint():
+    with pytest.raises(stix2.exceptions.PropertyPresenceError):
+        stix2.parse({
+            "type": "location",
+            "spec_version": "2.1",
+            "id": LOCATION_ID,
+        })
+
+
 def test_google_map_url_long_lat_provided():
     expected_url = "https://www.google.com/maps/search/?api=1&query=41.862401%2C-87.616001"
 

stix2/test/v21/test_malware.py

@@ -6,7 +6,7 @@ import pytz
 
 import stix2
 
-from ...exceptions import InvalidValueError
+from ...exceptions import InvalidValueError, PropertyPresenceError
 from .constants import FAKE_TIME, MALWARE_ID, MALWARE_KWARGS
 
 EXPECTED_MALWARE = """{
@@ -176,3 +176,24 @@ def test_malware_invalid_last_before_first():
         stix2.v21.Malware(first_seen="2017-01-01T12:34:56.000Z", last_seen="2017-01-01T12:33:56.000Z", **MALWARE_KWARGS)
 
     assert "'last_seen' must be greater than or equal to 'first_seen'" in str(excinfo.value)
+
+
+def test_malware_family_no_name():
+    with pytest.raises(PropertyPresenceError):
+        stix2.parse({
+            "type": "malware",
+            "id": MALWARE_ID,
+            "spec_version": "2.1",
+            "is_family": True,
+            "malware_types": ["a type"],
+        })
+
+
+def test_malware_non_family_no_name():
+    stix2.parse({
+        "type": "malware",
+        "id": MALWARE_ID,
+        "spec_version": "2.1",
+        "is_family": False,
+        "malware_types": ["something"],
+    })