fix(well-inventory): treat whitespace-only lexicon values as blank

Author: ksmuczynski

schemas/well_inventory.py

@@ -125,7 +125,9 @@ def email_validator_function(email_str):
 
 def flexible_lexicon_validator(enum_cls):
     def validator(v):
-        if v is None or v == "":
+        if v is None:
+            return None
+        if isinstance(v, str) and v.strip() == "":
             return None
         if isinstance(v, enum_cls):
             return v

tests/test_well_inventory.py

@@ -1258,6 +1258,14 @@ def test_blank_well_status_is_treated_as_none(self):
 
         assert model.well_status is None
 
+    def test_whitespace_only_well_status_is_treated_as_none(self):
+        row = _minimal_valid_well_inventory_row()
+        row["well_hole_status"] = "   "
+
+        model = WellInventoryRow(**row)
+
+        assert model.well_status is None
+
     def test_canonical_name_wins_when_alias_and_canonical_present(self):
         row = _minimal_valid_well_inventory_row()
         row["well_status"] = "Abandoned"