datacite: adding datacite-specific extra metadata

* attributes.metadataVersion
* attributes.schemaVersion
* attributes.version (source dependent values, follows suggestions in
https://schema.datacite.org/meta/kernel-4.3/doc/DataCite-MetadataKernel_v4.3.pdf#page=26,
but values vary)

Furthermore:

* attributes.types.resourceTypeGeneral
* attributes.types.resourceType

1 files changed, 33 insertions, 25 deletions

diff --git a/python/tests/files/datacite/datacite_result_13.json b/python/tests/files/datacite/datacite_result_13.json
index d6ed2985..3dc7cafb 100644
--- a/python/tests/files/datacite/datacite_result_13.json
+++ b/python/tests/files/datacite/datacite_result_13.json
@@ -1,28 +1,36 @@
 {
-    "extra": {"datacite": {}, "month": 10},
-    "title": "[M\u00fcssen wir des Gl\u00fccks uns sch\u00e4men?]",
-    "release_type": "article-journal",
-    "release_stage": "published",
-    "release_date": "1940-10-05",
-    "release_year": 1940,
-    "ext_ids": {
-        "doi": "10.5169/seals-314104"
+  "extra": {
+    "datacite": {
+      "metadataVersion": 17,
+      "resourceType": "Journal Article",
+      "resourceTypeGeneral": "Text",
+      "schemaVersion": "http://datacite.org/schema/kernel-3"
     },
-    "publisher": "Buchdruckerei B\u00fcchler & Co.",
-    "contribs": [
-        {
-            "index": 0,
-            "raw_name": "O.M.",
-            "role": "author"
-        },
-        {
-            "index": 1,
-            "raw_name": "Hermann Hiltbrunner",
-            "given_name": "Hermann",
-            "surname": "Hiltbrunner",
-            "role": "author"
-        }
-    ],
-    "refs": [],
-    "abstracts": []
+    "month": 10
+  },
+  "title": "[Müssen wir des Glücks uns schämen?]",
+  "release_type": "article-journal",
+  "release_stage": "published",
+  "release_date": "1940-10-05",
+  "release_year": 1940,
+  "ext_ids": {
+    "doi": "10.5169/seals-314104"
+  },
+  "publisher": "Buchdruckerei Büchler & Co.",
+  "contribs": [
+    {
+      "index": 0,
+      "raw_name": "O.M.",
+      "role": "author"
+    },
+    {
+      "index": 1,
+      "raw_name": "Hermann Hiltbrunner",
+      "given_name": "Hermann",
+      "surname": "Hiltbrunner",
+      "role": "author"
+    }
+  ],
+  "refs": [],
+  "abstracts": []
 }