fix test

Author: changhc

src/validators/enum_.rs

@@ -1,4 +1,3 @@
-use std::collections::HashSet;
 // Validator for Enums, so named because "enum" is a reserved keyword in Rust.
 use std::marker::PhantomData;
 

tests/validators/test_enums.py

@@ -263,8 +263,6 @@ class MyEnum(Enum):
 
 
 def test_plain_enum_tuple():
-    from pydantic import RootModel
-
     class MyEnum(Enum):
         a = 1, 2
         b = 2, 3
@@ -273,9 +271,7 @@ class MyEnum(Enum):
     v = SchemaValidator(core_schema.enum_schema(MyEnum, list(MyEnum.__members__.values())))
     assert v.validate_python((1, 2)) is MyEnum.a
     assert v.validate_python((2, 3)) is MyEnum.b
-    serialised = RootModel[MyEnum](MyEnum.a).model_dump_json()
-    parsed = RootModel[MyEnum].model_validate_json(serialised)
-    assert parsed.root is MyEnum.a
+    assert v.validate_json('[1, 2]') is MyEnum.a
 
 
 def test_plain_enum_empty():