Pass variant index to visit_enum_simple

serde_tests/tests/test_bytes.rs

@@ -41,6 +41,7 @@ impl serde::Serializer for BytesSerializer {
 
     fn visit_enum_simple<T>(&mut self,
                             _name: &str,
+                            _variant_index: usize,
                             _variant: &str,
                             _value: T) -> Result<(), Error>
     {

serde_tests/tests/test_ser.rs

@@ -84,6 +84,7 @@ impl<'a> Serializer for AssertSerializer<'a> {
 
     fn visit_enum_simple<T>(&mut self,
                             name: &str,
+                            _variant_index: usize,
                             variant: &str,
                             value: T,
                             ) -> Result<(), ()>