Update course of action for stix2.1 (again)

stix2/test/v21/test_course_of_action.py

@@ -1,14 +1,12 @@
-import datetime as dt
+import json
 
 import pytest
-import pytz
 
 import stix2
 import stix2.exceptions
+import stix2.utils
 
-from .constants import COURSE_OF_ACTION_ID, IDENTITY_ID
-
-EXPECTED = """{
+COA_WITH_BIN_JSON = """{
     "type": "course-of-action",
     "spec_version": "2.1",
     "id": "course-of-action--8e2e2d2b-17d4-4cbf-938f-98ee46b3cd3f",
@@ -27,54 +25,63 @@
 }"""
 
 
-def test_course_of_action_example():
-    coa = stix2.v21.CourseOfAction(
-        id=COURSE_OF_ACTION_ID,
-        created_by_ref=IDENTITY_ID,
-        created="2016-04-06T20:03:48.000Z",
-        modified="2016-04-06T20:03:48.000Z",
-        name="Add TCP port 80 Filter Rule to the existing Block UDP 1434 Filter",
-        description="This is how to add a filter rule to block inbound access to TCP port 80 to the existing UDP 1434 filter ...",
-        action_type="textual:text/plain",
-        os_execution_envs=["a", "b", "c"],
-        action_bin="aGVsbG8gd29ybGQ=",
-    )
+COA_WITH_REF_JSON = """{
+    "type": "course-of-action",
+    "spec_version": "2.1",
+    "id": "course-of-action--8e2e2d2b-17d4-4cbf-938f-98ee46b3cd3f",
+    "created_by_ref": "identity--311b2d2d-f010-4473-83ec-1edf84858f4c",
+    "created": "2016-04-06T20:03:48.000Z",
+    "modified": "2016-04-06T20:03:48.000Z",
+    "name": "Add TCP port 80 Filter Rule to the existing Block UDP 1434 Filter",
+    "description": "This is how to add a filter rule to block inbound access to TCP port 80 to the existing UDP 1434 filter ...",
+    "action_type": "textual:text/plain",
+    "os_execution_envs": [
+        "a",
+        "b",
+        "c"
+    ],
+    "action_reference": {
+        "source_name": "a source",
+        "description": "description of a source"
+    }
+}"""
+
+
+COA_WITH_BIN_DICT = json.loads(COA_WITH_BIN_JSON)
+COA_WITH_REF_DICT = json.loads(COA_WITH_REF_JSON)
 
-    assert str(coa) == EXPECTED
+
+@pytest.mark.parametrize(
+    "sdo_json,sdo_dict", [
+        (COA_WITH_BIN_JSON, COA_WITH_BIN_DICT),
+        (COA_WITH_REF_JSON, COA_WITH_REF_DICT),
+    ],
+)
+def test_course_of_action_example(sdo_json, sdo_dict):
+    coa = stix2.v21.CourseOfAction(**sdo_dict)
+    assert str(coa) == sdo_json
 
 
 @pytest.mark.parametrize(
-    "data", [
-        EXPECTED,
-        {
-            "created": "2016-04-06T20:03:48.000Z",
-            "created_by_ref": IDENTITY_ID,
-            "description": "This is how to add a filter rule to block inbound access to TCP port 80 to the existing UDP 1434 filter ...",
-            "id": COURSE_OF_ACTION_ID,
-            "modified": "2016-04-06T20:03:48.000Z",
-            "name": "Add TCP port 80 Filter Rule to the existing Block UDP 1434 Filter",
-            "spec_version": "2.1",
-            "type": "course-of-action",
-            "action_type": "textual:text/plain",
-            "os_execution_envs": ["a", "b", "c"],
-            "action_bin": "aGVsbG8gd29ybGQ=",
-        },
+    "sdo_json,sdo_dict", [
+        (COA_WITH_BIN_JSON, COA_WITH_BIN_DICT),
+        (COA_WITH_REF_JSON, COA_WITH_REF_DICT),
     ],
 )
-def test_parse_course_of_action(data):
-    coa = stix2.parse(data, version="2.1")
-
-    assert coa.type == 'course-of-action'
-    assert coa.spec_version == '2.1'
-    assert coa.id == COURSE_OF_ACTION_ID
-    assert coa.created == dt.datetime(2016, 4, 6, 20, 3, 48, tzinfo=pytz.utc)
-    assert coa.modified == dt.datetime(2016, 4, 6, 20, 3, 48, tzinfo=pytz.utc)
-    assert coa.created_by_ref == IDENTITY_ID
-    assert coa.description == "This is how to add a filter rule to block inbound access to TCP port 80 to the existing UDP 1434 filter ..."
-    assert coa.name == "Add TCP port 80 Filter Rule to the existing Block UDP 1434 Filter"
-    assert coa.action_type == "textual:text/plain"
-    assert coa.os_execution_envs == ["a", "b", "c"]
-    assert coa.action_bin == "aGVsbG8gd29ybGQ="
+def test_parse_course_of_action(sdo_json, sdo_dict):
+
+    # Names of timestamp-valued attributes
+    ts_attrs = {"created", "modified"}
+
+    for data in (sdo_json, sdo_dict):
+        coa = stix2.parse(data, version="2.1")
+
+        # sdo_dict is handy as a source of attribute names/values to check
+        for attr_name, attr_value in sdo_dict.items():
+            cmp_value = stix2.utils.parse_into_datetime(attr_value) \
+                if attr_name in ts_attrs else attr_value
+
+            assert getattr(coa, attr_name) == cmp_value
 
 
 def test_course_of_action_constraint():

stix2/v21/sdo.py

@@ -8,9 +8,10 @@
 from ..core import STIXDomainObject
 from ..custom import _custom_object_builder
 from ..properties import (
-    BooleanProperty, EnumProperty, FloatProperty, IDProperty, IntegerProperty,
-    ListProperty, ObservableProperty, PatternProperty, ReferenceProperty,
-    StringProperty, TimestampProperty, TypeProperty,
+    BinaryProperty, BooleanProperty, EmbeddedObjectProperty, EnumProperty,
+    FloatProperty, IDProperty, IntegerProperty, ListProperty,
+    ObservableProperty, PatternProperty, ReferenceProperty, StringProperty,
+    TimestampProperty, TypeProperty,
 )
 from ..utils import NOW
 from .common import ExternalReference, GranularMarking, KillChainPhase
@@ -101,8 +102,8 @@ class CourseOfAction(STIXDomainObject):
         ('description', StringProperty()),
         ('action_type', StringProperty()),
         ('os_execution_envs', ListProperty(StringProperty)),
-        ('action_bin', StringProperty()),
-        ('action_reference', StringProperty()),
+        ('action_bin', BinaryProperty()),
+        ('action_reference', EmbeddedObjectProperty(ExternalReference)),
         ('revoked', BooleanProperty(default=lambda: False)),
         ('labels', ListProperty(StringProperty)),
         ('confidence', IntegerProperty()),