Update imports to appease isort.

stix2/test/test_attack_pattern.py

@@ -7,7 +7,6 @@ import stix2
 
 from .constants import ATTACK_PATTERN_ID
 
-
 EXPECTED = """{
     "type": "attack-pattern",
     "id": "attack-pattern--0c7b5b88-8ff7-4a4d-aa9d-feb398cd0061",

stix2/test/test_campaign.py

@@ -7,7 +7,6 @@ import stix2
 
 from .constants import CAMPAIGN_ID
 
-
 EXPECTED = """{
     "type": "campaign",
     "id": "campaign--8e2e2d2b-17d4-4cbf-938f-98ee46b3cd3f",

stix2/test/test_course_of_action.py

@@ -7,7 +7,6 @@ import stix2
 
 from .constants import COURSE_OF_ACTION_ID
 
-
 EXPECTED = """{
     "type": "course-of-action",
     "id": "course-of-action--8e2e2d2b-17d4-4cbf-938f-98ee46b3cd3f",

stix2/test/test_external_reference.py

@@ -6,7 +6,6 @@ import pytest
 
 import stix2
 
-
 VERIS = """{
     "source_name": "veris",
     "url": "https://github.com/vz-risk/VCDB/blob/master/data/json/0001AA7F-C601-424A-B2B8-BE6C9F5164E7.json",

stix2/test/test_identity.py

@@ -7,7 +7,6 @@ import stix2
 
 from .constants import IDENTITY_ID
 
-
 EXPECTED = """{
     "type": "identity",
     "id": "identity--311b2d2d-f010-5473-83ec-1edf84858f4c",

stix2/test/test_indicator.py

@@ -8,7 +8,6 @@ import stix2
 
 from .constants import FAKE_TIME, INDICATOR_ID, INDICATOR_KWARGS
 
-
 EXPECTED_INDICATOR = """{
     "type": "indicator",
     "id": "indicator--01234567-89ab-cdef-0123-456789abcdef",

stix2/test/test_intrusion_set.py

@@ -7,7 +7,6 @@ import stix2
 
 from .constants import INTRUSION_SET_ID
 
-
 EXPECTED = """{
     "type": "intrusion-set",
     "id": "intrusion-set--4e78f46f-a023-4e5f-bc24-71b3ca22ec29",

stix2/test/test_kill_chain_phases.py

@@ -4,7 +4,6 @@ import pytest
 
 import stix2
 
-
 LMCO_RECON = """{
     "kill_chain_name": "lockheed-martin-cyber-kill-chain",
     "phase_name": "reconnaissance"

stix2/test/test_malware.py

@@ -8,7 +8,6 @@ import stix2
 
 from .constants import FAKE_TIME, MALWARE_ID, MALWARE_KWARGS
 
-
 EXPECTED_MALWARE = """{
     "type": "malware",
     "id": "malware--fedcba98-7654-3210-fedc-ba9876543210",

stix2/test/test_markings.py

@@ -8,7 +8,6 @@ from stix2 import TLP_WHITE
 
 from .constants import MARKING_DEFINITION_ID
 
-
 EXPECTED_TLP_MARKING_DEFINITION = """{
     "type": "marking-definition",
     "id": "marking-definition--613f2e26-407d-48c7-9eca-b8e91df99dc9",

stix2/test/test_object_markings.py

@@ -3,8 +3,9 @@ import pytest
 
 from stix2 import TLP_AMBER, Malware, exceptions, markings
 
-from .constants import FAKE_TIME, MALWARE_ID, MARKING_IDS
+from .constants import FAKE_TIME, MALWARE_ID
 from .constants import MALWARE_KWARGS as MALWARE_KWARGS_CONST
+from .constants import MARKING_IDS
 
 """Tests for the Data Markings API."""
 

stix2/test/test_relationship.py

@@ -8,7 +8,6 @@ import stix2
 from .constants import (FAKE_TIME, INDICATOR_ID, MALWARE_ID, RELATIONSHIP_ID,
                         RELATIONSHIP_KWARGS)
 
-
 EXPECTED_RELATIONSHIP = """{
     "type": "relationship",
     "id": "relationship--00000000-1111-2222-3333-444444444444",

stix2/test/test_report.py

@@ -7,7 +7,6 @@ import stix2
 
 from .constants import INDICATOR_KWARGS, REPORT_ID
 
-
 EXPECTED = """{
     "type": "report",
     "id": "report--84e4d88f-44ea-4bcd-bbf3-b2c1c320bcb3",

stix2/test/test_sighting.py

@@ -7,7 +7,6 @@ import stix2
 
 from .constants import INDICATOR_ID, SIGHTING_ID, SIGHTING_KWARGS
 
-
 EXPECTED_SIGHTING = """{
     "type": "sighting",
     "id": "sighting--bfbc19db-ec35-4e45-beed-f8bde2a772fb",

stix2/test/test_threat_actor.py

@@ -7,7 +7,6 @@ import stix2
 
 from .constants import THREAT_ACTOR_ID
 
-
 EXPECTED = """{
     "type": "threat-actor",
     "id": "threat-actor--8e2e2d2b-17d4-4cbf-938f-98ee46b3cd3f",

stix2/test/test_tool.py

@@ -7,7 +7,6 @@ import stix2
 
 from .constants import TOOL_ID
 
-
 EXPECTED = """{
     "type": "tool",
     "id": "tool--8e2e2d2b-17d4-4cbf-938f-98ee46b3cd3f",

stix2/test/test_vulnerability.py

@@ -7,7 +7,6 @@ import stix2
 
 from .constants import VULNERABILITY_ID
 
-
 EXPECTED = """{
     "type": "vulnerability",
     "id": "vulnerability--0c7b5b88-8ff7-4a4d-aa9d-feb398cd0061",