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test_core.py
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test_core.py
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import pytest
import stix2
from stix2 import core, exceptions
from .constants import IDENTITY_ID, OBSERVED_DATA_ID
BUNDLE = {
"type": "bundle",
"id": "bundle--00000000-0000-4000-8000-000000000007",
"objects": [
{
"type": "indicator",
"spec_version": "2.1",
"id": "indicator--00000000-0000-4000-8000-000000000001",
"created": "2017-01-01T12:34:56.000Z",
"modified": "2017-01-01T12:34:56.000Z",
"pattern": "[file:hashes.MD5 = 'd41d8cd98f00b204e9800998ecf8427e']",
"valid_from": "2017-01-01T12:34:56Z",
"indicator_types": [
"malicious-activity",
],
},
{
"type": "malware",
"spec_version": "2.1",
"id": "malware--00000000-0000-4000-8000-000000000003",
"created": "2017-01-01T12:34:56.000Z",
"modified": "2017-01-01T12:34:56.000Z",
"name": "Cryptolocker",
"malware_types": [
"ransomware",
],
"is_family": False,
},
{
"type": "relationship",
"spec_version": "2.1",
"id": "relationship--00000000-0000-4000-8000-000000000005",
"created": "2017-01-01T12:34:56.000Z",
"modified": "2017-01-01T12:34:56.000Z",
"relationship_type": "indicates",
"source_ref": "indicator--a740531e-63ff-4e49-a9e1-a0a3eed0e3e7",
"target_ref": "malware--9c4638ec-f1de-4ddb-abf4-1b760417654e",
},
],
}
def test_dict_to_stix2_bundle_with_version():
with pytest.raises(exceptions.InvalidValueError) as excinfo:
core.dict_to_stix2(BUNDLE, version='2.0')
msg = "Invalid value for Bundle 'objects': Spec version 2.0 bundles don't yet support containing objects of a different spec version."
assert str(excinfo.value) == msg
def test_parse_observable_with_version():
observable = {"type": "file", "name": "foo.exe"}
obs_obj = core.parse_observable(observable, version='2.1')
v = 'v21'
assert v in str(obs_obj.__class__)
@pytest.mark.xfail(reason="The default version is not 2.1", condition=stix2.DEFAULT_VERSION != "2.1")
def test_parse_observable_with_no_version():
observable = {"type": "file", "name": "foo.exe"}
obs_obj = core.parse_observable(observable)
v = 'v21'
assert v in str(obs_obj.__class__)
def test_register_object_with_version():
bundle = core.dict_to_stix2(BUNDLE, version='2.1')
core._register_object(bundle.objects[0].__class__)
v = 'v21'
assert bundle.objects[0].type in core.STIX2_OBJ_MAPS[v]['objects']
assert v in str(bundle.objects[0].__class__)
def test_register_marking_with_version():
core._register_marking(stix2.v21.TLP_WHITE.__class__, version='2.1')
v = 'v21'
assert stix2.v21.TLP_WHITE.definition._type in core.STIX2_OBJ_MAPS[v]['markings']
assert v in str(stix2.v21.TLP_WHITE.__class__)
@pytest.mark.xfail(reason="The default version is not 2.1", condition=stix2.DEFAULT_VERSION != "2.1")
def test_register_marking_with_no_version():
# Uses default version (2.0 in this case)
core._register_marking(stix2.v21.TLP_WHITE.__class__)
v = 'v21'
assert stix2.v21.TLP_WHITE.definition._type in core.STIX2_OBJ_MAPS[v]['markings']
assert v in str(stix2.v21.TLP_WHITE.__class__)
def test_register_observable_with_default_version():
observed_data = stix2.v21.ObservedData(
id=OBSERVED_DATA_ID,
created_by_ref=IDENTITY_ID,
created="2016-04-06T19:58:16.000Z",
modified="2016-04-06T19:58:16.000Z",
first_observed="2015-12-21T19:00:00Z",
last_observed="2015-12-21T19:00:00Z",
number_observed=50,
objects={
"0": {
"name": "foo.exe",
"type": "file",
"extensions": {
"ntfs-ext": {
"alternate_data_streams": [
{
"name": "second.stream",
"size": 25536,
},
],
},
},
},
"1": {
"type": "directory",
"path": "/usr/home",
"contains_refs": ["0"],
},
},
)
core._register_observable(observed_data.objects['0'].__class__)
v = 'v21'
assert observed_data.objects['0'].type in core.STIX2_OBJ_MAPS[v]['observables']
assert v in str(observed_data.objects['0'].__class__)
def test_register_observable_extension_with_default_version():
observed_data = stix2.v21.ObservedData(
id=OBSERVED_DATA_ID,
created_by_ref=IDENTITY_ID,
created="2016-04-06T19:58:16.000Z",
modified="2016-04-06T19:58:16.000Z",
first_observed="2015-12-21T19:00:00Z",
last_observed="2015-12-21T19:00:00Z",
number_observed=50,
objects={
"0": {
"name": "foo.exe",
"type": "file",
"extensions": {
"ntfs-ext": {
"alternate_data_streams": [
{
"name": "second.stream",
"size": 25536,
},
],
},
},
},
"1": {
"type": "directory",
"path": "/usr/home",
"contains_refs": ["0"],
},
},
)
core._register_observable_extension(observed_data.objects['0'], observed_data.objects['0'].extensions['ntfs-ext'].__class__)
v = 'v21'
assert observed_data.objects['0'].type in core.STIX2_OBJ_MAPS[v]['observables']
assert v in str(observed_data.objects['0'].__class__)
assert observed_data.objects['0'].extensions['ntfs-ext']._type in core.STIX2_OBJ_MAPS[v]['observable-extensions']['file']
assert v in str(observed_data.objects['0'].extensions['ntfs-ext'].__class__)