Merge pull request #276 from michamos/curated-lone-references-refs

hep: treat references with only $$0 as curated

inspire_dojson/hep/rules/bd9xx.py

@@ -260,7 +260,11 @@ def _has_curator_flag(value):
         return 'CURATOR' in normalized_nine_values
 
     def _is_curated(value):
-        return force_single_element(value.get('z')) == '1' and _has_curator_flag(value)
+        is_explicitly_curated = (
+            force_single_element(value.get('z')) == '1' and _has_curator_flag(value)
+        )
+        has_only_0_and_z = set(value.keys()) == {'0', 'z'}
+        return is_explicitly_curated or has_only_0_and_z
 
     def _set_record(el):
         recid = maybe_int(el)

tests/test_hep_bd9xx.py

@@ -1631,6 +1631,41 @@ def test_references_from_999C5_0_h_m_o_r_t_y():
     assert expected == result['999C5']
 
 
+def test_references_from_999C5_0_z():
+    schema = load_schema('hep')
+    subschema = schema['properties']['references']
+
+    snippet = (
+        '<datafield tag="999" ind1="C" ind2="5">'
+        '  <subfield code="0">351013</subfield>'
+        '  <subfield code="z">1</subfield>'
+        '</datafield>'
+    )  # record/374213
+
+    expected = [
+        {
+            'curated_relation': True,
+            'record': {
+                '$ref': 'http://localhost:5000/api/literature/351013',
+            },
+        },
+    ]
+    result = hep.do(create_record(snippet))
+
+    assert validate(result['references'], subschema) is None
+    assert expected == result['references']
+
+    expected = [
+        {
+            '0': 351013,
+            'z': 1,
+        },
+    ]
+    result = hep2marc.do(result)
+
+    assert expected == result['999C5']
+
+
 def test_references_from_999C5u_as_cds_system_identifiers():
     schema = load_schema('hep')
     subschema = schema['properties']['references']