cti-python-stix2/stix2/test/test_malware.py

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import datetime as dt
import pytest
import pytz
import stix2
from .constants import FAKE_TIME, MALWARE_ID, MALWARE_KWARGS
EXPECTED_MALWARE = """{
"created": "2016-05-12T08:17:27Z",
"id": "malware--fedcba98-7654-3210-fedc-ba9876543210",
"labels": [
"ransomware"
],
"modified": "2016-05-12T08:17:27Z",
"name": "Cryptolocker",
"type": "malware"
}"""
def test_malware_with_all_required_fields():
now = dt.datetime(2016, 5, 12, 8, 17, 27, tzinfo=pytz.utc)
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mal = stix2.Malware(
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type="malware",
id=MALWARE_ID,
created=now,
modified=now,
labels=["ransomware"],
name="Cryptolocker",
)
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assert str(mal) == EXPECTED_MALWARE
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def test_malware_autogenerated_fields(malware):
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assert malware.type == 'malware'
assert malware.id == 'malware--00000000-0000-0000-0000-000000000001'
assert malware.created == FAKE_TIME
assert malware.modified == FAKE_TIME
assert malware.labels == ['ransomware']
assert malware.name == "Cryptolocker"
assert malware['type'] == 'malware'
assert malware['id'] == 'malware--00000000-0000-0000-0000-000000000001'
assert malware['created'] == FAKE_TIME
assert malware['modified'] == FAKE_TIME
assert malware['labels'] == ['ransomware']
assert malware['name'] == "Cryptolocker"
def test_malware_type_must_be_malware():
with pytest.raises(stix2.exceptions.STIXValueError) as excinfo:
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stix2.Malware(type='xxx', **MALWARE_KWARGS)
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assert excinfo.value.cls == stix2.Malware
assert excinfo.value.prop_name == "type"
assert excinfo.value.reason == "must equal 'malware'."
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assert str(excinfo.value) == "Invalid value for Malware 'type': must equal 'malware'."
def test_malware_id_must_start_with_malware():
with pytest.raises(stix2.exceptions.STIXValueError) as excinfo:
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stix2.Malware(id='my-prefix--', **MALWARE_KWARGS)
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assert excinfo.value.cls == stix2.Malware
assert excinfo.value.prop_name == "id"
assert excinfo.value.reason == "must start with 'malware--'."
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assert str(excinfo.value) == "Invalid value for Malware 'id': must start with 'malware--'."
def test_malware_required_fields():
with pytest.raises(ValueError) as excinfo:
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stix2.Malware()
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assert str(excinfo.value) == "Missing required field(s) for Malware: (labels, name)."
def test_malware_required_field_name():
with pytest.raises(ValueError) as excinfo:
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stix2.Malware(labels=['ransomware'])
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assert str(excinfo.value) == "Missing required field(s) for Malware: (name)."
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def test_cannot_assign_to_malware_attributes(malware):
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with pytest.raises(ValueError) as excinfo:
malware.name = "Cryptolocker II"
assert str(excinfo.value) == "Cannot modify properties after creation."
def test_invalid_kwarg_to_malware():
with pytest.raises(TypeError) as excinfo:
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stix2.Malware(my_custom_property="foo", **MALWARE_KWARGS)
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assert str(excinfo.value) == "unexpected keyword arguments: ['my_custom_property']"