Add strain field to subject metadata and corresponding test case

Author: bendichter

dandi/consts.py

@@ -27,6 +27,7 @@
     "genotype",
     "sex",
     "species",
+    "strain",
     "subject_id",
 )
 

dandi/tests/fixtures.py

@@ -110,6 +110,7 @@ def simple2_nwb(
             date_of_birth=datetime(2016, 12, 1, tzinfo=tzutc()),
             sex="U",
             species="Mus musculus",
+            strain="C57BL/6J",
         ),
         **simple1_nwb_metadata,
     )

dandi/tests/test_metadata.py

@@ -898,6 +898,7 @@ def test_nwb2asset(simple2_nwb: Path) -> None:
                     identifier="http://purl.obolibrary.org/obo/NCBITaxon_10090",
                     name="Mus musculus - House mouse",
                 ),
+                strain=StrainType(schemaKey="StrainType", name="C57BL/6J"),
             ),
         ],
         variableMeasured=[],