test

hgrecco · May 27, 2024 · c3a345e · c3a345e
1 parent 11a9c6d
commit c3a345e
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Showing 2 changed files with 15 additions and 3 deletions.
diff --git a/pint/facets/plain/registry.py b/pint/facets/plain/registry.py
@@ -60,7 +60,12 @@
     UnitLike,
 )
 from ...compat import Self, TypeAlias, deprecated
-from ...errors import DimensionalityError, RedefinitionError, UndefinedUnitError, OffsetUnitCalculusError
+from ...errors import (
+    DimensionalityError,
+    OffsetUnitCalculusError,
+    RedefinitionError,
+    UndefinedUnitError,
+)
 from ...pint_eval import build_eval_tree
 from ...util import (
     ParserHelper,
@@ -665,8 +670,10 @@ def get_name(self, name_or_alias: str, case_sensitive: bool | None = None) -> st
 
         if prefix:
             if not self._units[unit_name].is_multiplicative:
-                raise OffsetUnitCalculusError("Prefixing a unit requires multiplying the unit.")
-
+                raise OffsetUnitCalculusError(
+                    "Prefixing a unit requires multiplying the unit."
+                )
+
             name = prefix + unit_name
             symbol = self.get_symbol(name, case_sensitive)
             prefix_def = self._prefixes[prefix]

diff --git a/pint/testsuite/test_unit.py b/pint/testsuite/test_unit.py
@@ -1043,3 +1043,8 @@ def test_alias(self):
         # Define against unknown name
         with pytest.raises(KeyError):
             ureg.define("@alias notexist = something")
+
+    def test_prefix_offset_units(self):
+        ureg = UnitRegistry()
+        with pytest.raises(errors.OffsetUnitCalculusError):
+            ureg.parse_units("kilodegree_Celsius")