[client] Add relationship bundle test

tests/01-unit/utils/test_opencti_stix2_splitter.py

@@ -36,9 +36,9 @@ def test_split_test_bundle():
         ), "Splitter must not have change the content"
 
 
-def test_split_mono_bundle():
+def test_split_mono_entity_bundle():
     stix_splitter = OpenCTIStix2Splitter()
-    with open("./tests/data/mono-bundle.json") as file:
+    with open("./tests/data/mono-bundle-entity.json") as file:
         content = file.read()
     expectations, bundles = stix_splitter.split_bundle_with_expectations(content)
     assert expectations == 1
@@ -54,6 +54,20 @@ def test_split_mono_bundle():
     assert json_bundle["created_by_ref"] is None
 
 
+def test_split_mono_relationship_bundle():
+    stix_splitter = OpenCTIStix2Splitter()
+    with open("../../../tests/data/mono-bundle-relationship.json") as file:
+        content = file.read()
+    expectations, bundles = stix_splitter.split_bundle_with_expectations(content)
+    assert expectations == 1
+    # Split with cleanup_inconsistent_bundle
+    stix_splitter = OpenCTIStix2Splitter()
+    expectations, bundles = stix_splitter.split_bundle_with_expectations(
+        bundle=content, cleanup_inconsistent_bundle=True
+    )
+    assert expectations == 0
+
+
 def test_split_capec_bundle():
     stix_splitter = OpenCTIStix2Splitter()
     with open("./tests/data/mitre_att_capec.json") as file:

tests/data/mono-bundle-relationship.json

@@ -0,0 +1,16 @@
+{
+  "id": "bundle--1f126d0c-356c-43af-88f8-7a3b695dee83",
+  "objects": [
+    {
+      "id": "relationship--10e8c71d-a1b4-4e35-bca8-2e4a3785ea04",
+      "type": "relationship",
+      "relationship_type": "part-of",
+      "created_by_ref": "identity--not-available",
+      "source_ref": "malware--faa5b705-cf44-4e50-8472-29e5fec43c3c",
+      "target_ref": "malware--faa5b705-cf44-4e50-8472-29e5fec43c3d"
+    }
+  ],
+  "spec_version": "2.1",
+  "type": "bundle",
+  "x_opencti_seq": 1
+}