TST: add test for setting parents on multiple levels of a cfood

unittests/test_parent_cfood.yml

+---
+metadata:
+  crawler-version: 0.6.1
+---
+Definitions:
+  type: Definitions
+
+data:
+  type: Dict
+  match_name: '.*'
+  records:
+    Experiment:
+      name: "e"
+    Projekt:
+      parents: ["project"]
+      name: "p"
+    Campaign:
+      name: "c"
+  subtree:
+    Experiment:
+      type: DictElement
+      match: '.*'
+      records:
+        Experiment:
+            parents: ["Exp"]
+        Projekt:
+            parents: ["Projekt"]
+        Campaign:
+            parents: ["Cap"]
+    Experiment2:
+      type: DictElement
+      match: '.*'
+      records:
+        Campaign:
+            parents: ["Cap2"]

unittests/test_scanner.py

@@ -276,3 +276,28 @@ def test_variable_deletion_problems():
             assert record.get_property("var2").value == "test"
         else:
             raise RuntimeError("Wrong name")
+
+def test_record_parents():
+    """ Test the correct list of returned records by the scanner     """
+
+    data = {
+        'Experiments': {}
+    }
+
+    crawler_definition = load_definition(UNITTESTDIR / "test_parent_cfood.yml")
+    converter_registry = create_converter_registry(crawler_definition)
+
+    records = scan_structure_elements(DictElement(name="", value=data), crawler_definition,
+                                   converter_registry)
+    assert len(records)==3
+    for rec in records:
+        if rec.name == 'e':
+            assert rec.parents[0].name == 'Exp' # default parent was overwritten
+            assert len(rec.parents)==1
+        elif rec.name == 'c':
+            assert rec.parents[0].name == 'Cap2' # default parent was overwritten by second
+                                                 # converter
+            assert len(rec.parents)==1
+        elif rec.name == 'p':
+            assert rec.parents[0].name == 'Projekt' # top level set parent was overwritten
+            assert len(rec.parents)==1