Release 1.0.24

Solved #1105.

serde/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "serde"
-version = "1.0.19" # remember to update html_root_url
+version = "1.0.24" # remember to update html_root_url
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "A generic serialization/deserialization framework"

serde/src/lib.rs

@@ -79,7 +79,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 
 // Serde types in rustdoc of other crates get linked to here.
-#![doc(html_root_url = "https://docs.rs/serde/1.0.19")]
+#![doc(html_root_url = "https://docs.rs/serde/1.0.24")]
 
 // Support using Serde without the standard library!
 #![cfg_attr(not(feature = "std"), no_std)]

serde/src/private/de.rs

@@ -198,6 +198,7 @@ pub mod size_hint {
         helper(iter.size_hint())
     }
 
+    #[inline]
     pub fn cautious(hint: Option<usize>) -> usize {
         cmp::min(hint.unwrap_or(0), 4096)
     }
@@ -1246,6 +1247,9 @@ mod content {
                 Some(Content::Map(v)) => {
                     de::Deserializer::deserialize_any(MapDeserializer::new(v), visitor)
                 }
+                Some(Content::Seq(v)) => {
+                    de::Deserializer::deserialize_any(SeqDeserializer::new(v), visitor)
+                }
                 Some(other) => Err(de::Error::invalid_type(other.unexpected(), &"struct variant"),),
                 _ => Err(de::Error::invalid_type(de::Unexpected::UnitVariant, &"struct variant"),),
             }
@@ -1640,6 +1644,9 @@ mod content {
                 Some(&Content::Map(ref v)) => {
                     de::Deserializer::deserialize_any(MapRefDeserializer::new(v), visitor)
                 }
+                Some(&Content::Seq(ref v)) => {
+                    de::Deserializer::deserialize_any(SeqRefDeserializer::new(v), visitor)
+                }
                 Some(other) => Err(de::Error::invalid_type(other.unexpected(), &"struct variant"),),
                 _ => Err(de::Error::invalid_type(de::Unexpected::UnitVariant, &"struct variant"),),
             }

serde_derive/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "serde_derive"
-version = "1.0.19" # remember to update html_root_url
+version = "1.0.24" # remember to update html_root_url
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Macros 1.1 implementation of #[derive(Serialize, Deserialize)]"
@@ -20,7 +20,7 @@ proc-macro = true
 
 [dependencies]
 quote = "0.3.8"
-serde_derive_internals = { version = "=0.17.0", default-features = false, path = "../serde_derive_internals" }
+serde_derive_internals = { version = "=0.18.0", default-features = false, path = "../serde_derive_internals" }
 syn = { version = "0.11", features = ["visit"] }
 
 [dev-dependencies]

serde_derive/src/de.rs

@@ -418,8 +418,8 @@ fn deserialize_seq(
                 };
                 let assign = quote! {
                     let #var = match #visit {
-                        Some(__value) => __value,
+                        _serde::export::Some(__value) => __value,
-                        None => {
+                        _serde::export::None => {
                             return _serde::export::Err(_serde::de::Error::invalid_length(#index_in_seq, &#expecting));
                         }
                     };
@@ -447,7 +447,30 @@ fn deserialize_seq(
         };
     }
 
+    let let_default = match *cattrs.default() {
+        attr::Default::Default => {
+            Some(
+                quote!(
+                    let __default: Self::Value = _serde::export::Default::default();
+                ),
+            )
+        }
+        attr::Default::Path(ref path) => {
+            Some(
+                quote!(
+                    let __default: Self::Value = #path();
+                ),
+            )
+        }
+        attr::Default::None => {
+            // We don't need the default value, to prevent an unused variable warning
+            // we'll leave the line empty.
+            None
+        }
+    };
+
     quote_block! {
+        #let_default
         #(#let_values)*
         _serde::export::Ok(#result)
     }
@@ -1701,15 +1724,15 @@ fn deserialize_map(
         attr::Default::Default => {
             Some(
                 quote!(
-                let __default: Self::Value = _serde::export::Default::default();
+                    let __default: Self::Value = _serde::export::Default::default();
-            ),
+                ),
             )
         }
         attr::Default::Path(ref path) => {
             Some(
                 quote!(
-                let __default: Self::Value = #path();
+                    let __default: Self::Value = #path();
-            ),
+                ),
             )
         }
         attr::Default::None => {

serde_derive/src/lib.rs

@@ -22,7 +22,7 @@
 //!
 //! [https://serde.rs/derive.html]: https://serde.rs/derive.html
 
-#![doc(html_root_url = "https://docs.rs/serde_derive/1.0.19")]
+#![doc(html_root_url = "https://docs.rs/serde_derive/1.0.24")]
 
 #![cfg_attr(feature = "cargo-clippy", allow(too_many_arguments))]
 #![cfg_attr(feature = "cargo-clippy", allow(used_underscore_binding))]

serde_derive_internals/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "serde_derive_internals"
-version = "0.17.0" # remember to update html_root_url
+version = "0.18.0" # remember to update html_root_url
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "AST representation used by Serde derive macros. Unstable."

serde_derive_internals/src/ast.rs

@@ -49,9 +49,11 @@ impl<'a> Container<'a> {
         let attrs = attr::Container::from_ast(cx, item);
 
         let mut body = match item.body {
-            syn::Body::Enum(ref variants) => Body::Enum(enum_from_ast(cx, variants)),
+            syn::Body::Enum(ref variants) => {
+                Body::Enum(enum_from_ast(cx, variants, &attrs.default()))
+            }
             syn::Body::Struct(ref variant_data) => {
-                let (style, fields) = struct_from_ast(cx, variant_data, None);
+                let (style, fields) = struct_from_ast(cx, variant_data, None, &attrs.default());
                 Body::Struct(style, fields)
             }
         };
@@ -98,36 +100,54 @@ impl<'a> Body<'a> {
     }
 }
 
-fn enum_from_ast<'a>(cx: &Ctxt, variants: &'a [syn::Variant]) -> Vec<Variant<'a>> {
+fn enum_from_ast<'a>(
+    cx: &Ctxt,
+    variants: &'a [syn::Variant],
+    container_default: &attr::Default,
+) -> Vec<Variant<'a>> {
     variants
         .iter()
-        .map(
+        .map(|variant| {
-            |variant| {
+            let attrs = attr::Variant::from_ast(cx, variant);
-                let attrs = attr::Variant::from_ast(cx, variant);
+            let (style, fields) =
-                let (style, fields) = struct_from_ast(cx, &variant.data, Some(&attrs));
+                struct_from_ast(cx, &variant.data, Some(&attrs), container_default);
-                Variant {
+            Variant {
-                    ident: variant.ident.clone(),
+                ident: variant.ident.clone(),
-                    attrs: attrs,
+                attrs: attrs,
-                    style: style,
+                style: style,
-                    fields: fields,
+                fields: fields,
-                }
+            }
-            },
+        })
-        )
         .collect()
 }
 
-fn struct_from_ast<'a>(cx: &Ctxt, data: &'a syn::VariantData, attrs: Option<&attr::Variant>) -> (Style, Vec<Field<'a>>) {
+fn struct_from_ast<'a>(
+    cx: &Ctxt,
+    data: &'a syn::VariantData,
+    attrs: Option<&attr::Variant>,
+    container_default: &attr::Default,
+) -> (Style, Vec<Field<'a>>) {
     match *data {
-        syn::VariantData::Struct(ref fields) => (Style::Struct, fields_from_ast(cx, fields, attrs)),
+        syn::VariantData::Struct(ref fields) => {
-        syn::VariantData::Tuple(ref fields) if fields.len() == 1 => {
+            (Style::Struct, fields_from_ast(cx, fields, attrs, container_default))
-            (Style::Newtype, fields_from_ast(cx, fields, attrs))
+        }
+        syn::VariantData::Tuple(ref fields) if fields.len() == 1 => (
+            Style::Newtype,
+            fields_from_ast(cx, fields, attrs, container_default),
+        ),
+        syn::VariantData::Tuple(ref fields) => {
+            (Style::Tuple, fields_from_ast(cx, fields, attrs, container_default))
         }
-        syn::VariantData::Tuple(ref fields) => (Style::Tuple, fields_from_ast(cx, fields, attrs)),
         syn::VariantData::Unit => (Style::Unit, Vec::new()),
     }
 }
 
-fn fields_from_ast<'a>(cx: &Ctxt, fields: &'a [syn::Field], attrs: Option<&attr::Variant>) -> Vec<Field<'a>> {
+fn fields_from_ast<'a>(
+    cx: &Ctxt,
+    fields: &'a [syn::Field],
+    attrs: Option<&attr::Variant>,
+    container_default: &attr::Default,
+) -> Vec<Field<'a>> {
     fields
         .iter()
         .enumerate()
@@ -135,7 +155,7 @@ fn fields_from_ast<'a>(cx: &Ctxt, fields: &'a [syn::Field], attrs: Option<&attr:
             |(i, field)| {
                 Field {
                     ident: field.ident.clone(),
-                    attrs: attr::Field::from_ast(cx, i, field, attrs),
+                    attrs: attr::Field::from_ast(cx, i, field, attrs, container_default),
                     ty: &field.ty,
                 }
             },

serde_derive_internals/src/attr.rs

@@ -714,7 +714,13 @@ pub enum Default {
 
 impl Field {
     /// Extract out the `#[serde(...)]` attributes from a struct field.
-    pub fn from_ast(cx: &Ctxt, index: usize, field: &syn::Field, attrs: Option<&Variant>) -> Self {
+    pub fn from_ast(
+        cx: &Ctxt,
+        index: usize,
+        field: &syn::Field,
+        attrs: Option<&Variant>,
+        container_default: &Default,
+    ) -> Self {
         let mut ser_name = Attr::none(cx, "rename");
         let mut de_name = Attr::none(cx, "rename");
         let mut skip_serializing = BoolAttr::none(cx, "skip_serializing");
@@ -881,9 +887,10 @@ impl Field {
             }
         }
 
-        // Is skip_deserializing, initialize the field to Default::default()
+        // Is skip_deserializing, initialize the field to Default::default() unless a different
-        // unless a different default is specified by `#[serde(default = "...")]`
+        // default is specified by `#[serde(default = "...")]` on ourselves or our container (e.g.
-        if skip_deserializing.0.value.is_some() {
+        // the struct we are in).
+        if container_default == &Default::None && skip_deserializing.0.value.is_some() {
             default.set_if_none(Default::Default);
         }
 

serde_derive_internals/src/lib.rs

@@ -6,7 +6,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![doc(html_root_url = "https://docs.rs/serde_derive_internals/0.17.0")]
+#![doc(html_root_url = "https://docs.rs/serde_derive_internals/0.18.0")]
 
 extern crate syn;
 #[macro_use]

serde_test/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "serde_test"
-version = "1.0.19" # remember to update html_root_url
+version = "1.0.24" # remember to update html_root_url
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Token De/Serializer for testing De/Serialize implementations"

serde_test/src/assert.rs

@@ -215,7 +215,7 @@ where
 ///
 /// assert_de_tokens_error::<S>(
 ///     &[
-///         Token::Struct { name: "S", len: 1 },
+///         Token::Struct { name: "S", len: 2 },
 ///         Token::Str("x"),
 ///     ],
 ///     "unknown field `x`, expected `a` or `b`",

serde_test/src/configure.rs

@@ -11,17 +11,17 @@ pub struct Compact<T: ?Sized>(T);
 
 /// Trait to determine whether a value is represented in human-readable or
 /// compact form.
-/// 
+///
 /// ```
 /// extern crate serde;
 /// extern crate serde_test;
-/// 
+///
 /// use serde::{Deserialize, Deserializer, Serialize, Serializer};
 /// use serde_test::{Configure, Token, assert_tokens};
-/// 
+///
 /// #[derive(Debug, PartialEq)]
 /// struct Example(u8, u8);
-/// 
+///
 /// impl Serialize for Example {
 ///     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
 ///         where S: Serializer,
@@ -33,7 +33,7 @@ pub struct Compact<T: ?Sized>(T);
 ///         }
 ///     }
 /// }
-/// 
+///
 /// impl<'de> Deserialize<'de> for Example {
 ///     fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
 ///         where D: Deserializer<'de>,
@@ -52,7 +52,7 @@ pub struct Compact<T: ?Sized>(T);
 ///         }
 ///     }
 /// }
-/// 
+///
 /// fn main() {
 ///     assert_tokens(
 ///         &Example(1, 0).compact(),

serde_test/src/lib.rs

@@ -155,7 +155,7 @@
 //! # }
 //! ```
 
-#![doc(html_root_url = "https://docs.rs/serde_test/1.0.19")]
+#![doc(html_root_url = "https://docs.rs/serde_test/1.0.24")]
 
 #![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
 // Whitelisted clippy lints
@@ -164,6 +164,7 @@
 #![cfg_attr(feature = "cargo-clippy", allow(
     missing_docs_in_private_items,
     stutter,
+    use_debug,
     use_self,
 ))]
 

serde_test/src/ser.rs

@@ -40,25 +40,43 @@ impl<'a> Serializer<'a> {
 
 macro_rules! assert_next_token {
     ($ser:expr, $expected:ident) => {
-        assert_next_token!($ser, $expected, Token::$expected, true);
+        assert_next_token!($ser, stringify!($expected), Token::$expected, true);
     };
     ($ser:expr, $expected:ident($v:expr)) => {
-        assert_next_token!($ser, $expected, Token::$expected(v), v == $v);
+        assert_next_token!(
+            $ser,
+            format_args!("{}({:?})", stringify!($expected), $v),
+            Token::$expected(v),
+            v == $v
+        );
     };
     ($ser:expr, $expected:ident { $($k:ident),* }) => {
         let compare = ($($k,)*);
-        assert_next_token!($ser, $expected, Token::$expected { $($k),* }, ($($k,)*) == compare);
+        let field_format = || {
+            use std::fmt::Write;
+            let mut buffer = String::new();
+            $(
+                write!(&mut buffer, "{}: {:?}, ", stringify!($k), $k).unwrap();
+            )*
+            buffer
+        };
+        assert_next_token!(
+            $ser,
+            format_args!("{} {{ {}}}", stringify!($expected), field_format()),
+            Token::$expected { $($k),* },
+            ($($k,)*) == compare
+        );
     };
-    ($ser:expr, $expected:ident, $pat:pat, $guard:expr) => {
+    ($ser:expr, $expected:expr, $pat:pat, $guard:expr) => {
         match $ser.next_token() {
             Some($pat) if $guard => {}
             Some(other) => {
                 panic!("expected Token::{} but serialized as {}",
-                       stringify!($expected), other);
+                       $expected, other);
             }
             None => {
                 panic!("expected Token::{} after end of serialized tokens",
-                       stringify!($expected));
+                       $expected);
             }
         }
     };

test_suite/Cargo.toml

@@ -15,4 +15,4 @@ serde_derive = { path = "../serde_derive" }
 serde_test = { path = "../serde_test" }
 
 [dependencies]
-compiletest_rs = { version = "0.2", optional = true }
+compiletest_rs = { version = "0.3", optional = true }

test_suite/tests/test_annotations.rs

@@ -135,7 +135,7 @@ fn test_default_struct() {
              a5: 123,
          },
         &[
-            Token::Struct { name: "DefaultStruct", len: 1 },
+            Token::Struct { name: "DefaultStruct", len: 3 },
 
             Token::Str("a1"),
             Token::I32(1),
@@ -309,7 +309,7 @@ fn test_elt_not_deserialize() {
              c: NotDeserializeStruct(123),
              e: NotDeserializeEnum::Trouble,
          },
-        &[Token::Struct { name: "ContainsNotDeserialize", len: 3 }, Token::StructEnd],
+        &[Token::Struct { name: "ContainsNotDeserialize", len: 1 }, Token::StructEnd],
     );
 }
 
@@ -331,7 +331,7 @@ fn test_ignore_unknown() {
              a5: 123,
          },
         &[
-            Token::Struct { name: "DefaultStruct", len: 5 },
+            Token::Struct { name: "DefaultStruct", len: 3 },
 
             Token::Str("whoops1"),
             Token::I32(2),
@@ -359,7 +359,7 @@ fn test_ignore_unknown() {
 
     assert_de_tokens_error::<DenyUnknown>(
         &[
-            Token::Struct { name: "DenyUnknown", len: 2 },
+            Token::Struct { name: "DenyUnknown", len: 1 },
 
             Token::Str("a1"),
             Token::I32(1),

test_suite/tests/test_de.rs

@@ -80,6 +80,20 @@ struct StructSkipAll {
     #[serde(skip_deserializing)] a: i32,
 }
 
+#[derive(PartialEq, Debug, Deserialize)]
+#[serde(default)]
+struct StructSkipDefault {
+    #[serde(skip_deserializing)] a: i32,
+}
+
+impl Default for StructSkipDefault {
+    fn default() -> Self {
+        StructSkipDefault {
+            a: 16,
+        }
+    }
+}
+
 #[derive(PartialEq, Debug, Deserialize)]
 #[serde(deny_unknown_fields)]
 struct StructSkipAllDenyUnknown {
@@ -538,7 +552,7 @@ declare_tests! {
             Token::MapEnd,
         ],
         Struct { a: 1, b: 2, c: 0 } => &[
-            Token::Struct { name: "Struct", len: 3 },
+            Token::Struct { name: "Struct", len: 2 },
                 Token::Str("a"),
                 Token::I32(1),
 
@@ -570,7 +584,7 @@ declare_tests! {
             Token::MapEnd,
         ],
         Struct { a: 1, b: 2, c: 0 } => &[
-            Token::Struct { name: "Struct", len: 3 },
+            Token::Struct { name: "Struct", len: 2 },
                 Token::Str("a"),
                 Token::I32(1),
 
@@ -591,7 +605,7 @@ declare_tests! {
             Token::StructEnd,
         ],
         StructSkipAll { a: 0 } => &[
-            Token::Struct { name: "StructSkipAll", len: 1 },
+            Token::Struct { name: "StructSkipAll", len: 0 },
                 Token::Str("a"),
                 Token::I32(1),
 
@@ -600,6 +614,12 @@ declare_tests! {
             Token::StructEnd,
         ],
     }
+    test_struct_skip_default {
+        StructSkipDefault { a: 16 } => &[
+            Token::Struct { name: "StructSkipDefault", len: 0 },
+            Token::StructEnd,
+        ],
+    }
     test_struct_skip_all_deny_unknown {
         StructSkipAllDenyUnknown { a: 0 } => &[
             Token::Struct { name: "StructSkipAllDenyUnknown", len: 0 },
@@ -608,7 +628,7 @@ declare_tests! {
     }
     test_struct_default {
         StructDefault { a: 50, b: "overwritten".to_string() } => &[
-            Token::Struct { name: "StructDefault", len: 1 },
+            Token::Struct { name: "StructDefault", len: 2 },
                 Token::Str("a"),
                 Token::I32(50),
 
@@ -617,7 +637,7 @@ declare_tests! {
             Token::StructEnd,
         ],
         StructDefault { a: 100, b: "default".to_string() } => &[
-            Token::Struct { name: "StructDefault",  len: 0 },
+            Token::Struct { name: "StructDefault",  len: 2 },
             Token::StructEnd,
         ],
     }
@@ -954,7 +974,7 @@ fn test_cstr_internal_null_end() {
 declare_error_tests! {
     test_unknown_field<StructDenyUnknown> {
         &[
-            Token::Struct { name: "StructDenyUnknown", len: 2 },
+            Token::Struct { name: "StructDenyUnknown", len: 1 },
                 Token::Str("a"),
                 Token::I32(0),
 
@@ -964,14 +984,14 @@ declare_error_tests! {
     }
     test_skipped_field_is_unknown<StructDenyUnknown> {
         &[
-            Token::Struct { name: "StructDenyUnknown", len: 2 },
+            Token::Struct { name: "StructDenyUnknown", len: 1 },
                 Token::Str("b"),
         ],
         "unknown field `b`, expected `a`",
     }
     test_skip_all_deny_unknown<StructSkipAllDenyUnknown> {
         &[
-            Token::Struct { name: "StructSkipAllDenyUnknown", len: 1 },
+            Token::Struct { name: "StructSkipAllDenyUnknown", len: 0 },
                 Token::Str("a"),
         ],
         "unknown field `a`, there are no fields",

test_suite/tests/test_gen.rs

@@ -23,6 +23,7 @@ use self::serde::de::{DeserializeOwned, Deserializer};
 
 use std::borrow::Cow;
 use std::marker::PhantomData;
+use std::option::Option as StdOption;
 use std::result::Result as StdResult;
 
 // Try to trip up the generated code if it fails to use fully qualified paths.
@@ -32,6 +33,12 @@ struct Result;
 struct Ok;
 #[allow(dead_code)]
 struct Err;
+#[allow(dead_code)]
+struct Option;
+#[allow(dead_code)]
+struct Some;
+#[allow(dead_code)]
+struct None;
 
 //////////////////////////////////////////////////////////////////////////
 
@@ -56,7 +63,7 @@ fn test_gen() {
     #[derive(Serialize, Deserialize)]
     struct WithRef<'a, T: 'a> {
         #[serde(skip_deserializing)]
-        t: Option<&'a T>,
+        t: StdOption<&'a T>,
         #[serde(serialize_with="ser_x", deserialize_with="de_x")]
         x: X,
     }
@@ -77,9 +84,9 @@ fn test_gen() {
     #[derive(Serialize, Deserialize)]
     struct NoBounds<T> {
         t: T,
-        option: Option<T>,
+        option: StdOption<T>,
         boxed: Box<T>,
-        option_boxed: Option<Box<T>>,
+        option_boxed: StdOption<Box<T>>,
     }
     assert::<NoBounds<i32>>();
 
@@ -175,8 +182,8 @@ fn test_gen() {
 
     #[derive(Serialize)]
     struct OptionStatic<'a> {
-        a: Option<&'a str>,
+        a: StdOption<&'a str>,
-        b: Option<&'static str>,
+        b: StdOption<&'static str>,
     }
     assert_ser::<OptionStatic>();
 

test_suite/tests/test_macros.rs

@@ -786,7 +786,7 @@ fn test_adjacently_tagged_enum() {
     }
 
     // unit with no content
-    assert_tokens(
+    assert_ser_tokens(
         &AdjacentlyTagged::Unit::<u8>,
         &[
             Token::Struct { name: "AdjacentlyTagged", len: 1 },
@@ -798,11 +798,24 @@ fn test_adjacently_tagged_enum() {
         ],
     );
 
+    // unit with no content
+    assert_de_tokens(
+        &AdjacentlyTagged::Unit::<u8>,
+        &[
+            Token::Struct { name: "AdjacentlyTagged", len: 2 },
+
+            Token::Str("t"),
+            Token::Str("Unit"),
+
+            Token::StructEnd,
+        ],
+    );
+
     // unit with tag first
     assert_de_tokens(
         &AdjacentlyTagged::Unit::<u8>,
         &[
-            Token::Struct { name: "AdjacentlyTagged", len: 1 },
+            Token::Struct { name: "AdjacentlyTagged", len: 2 },
 
             Token::Str("t"),
             Token::Str("Unit"),
@@ -818,7 +831,7 @@ fn test_adjacently_tagged_enum() {
     assert_de_tokens(
         &AdjacentlyTagged::Unit::<u8>,
         &[
-            Token::Struct { name: "AdjacentlyTagged", len: 1 },
+            Token::Struct { name: "AdjacentlyTagged", len: 2 },
 
             Token::Str("c"),
             Token::Unit,
@@ -834,7 +847,7 @@ fn test_adjacently_tagged_enum() {
     assert_de_tokens(
         &AdjacentlyTagged::Unit::<u8>,
         &[
-            Token::Struct { name: "AdjacentlyTagged", len: 3 },
+            Token::Struct { name: "AdjacentlyTagged", len: 2 },
 
             Token::Str("f"),
             Token::Unit,
@@ -975,7 +988,7 @@ fn test_adjacently_tagged_enum_deny_unknown_fields() {
     assert_de_tokens(
         &AdjacentlyTagged::Unit,
         &[
-            Token::Struct { name: "AdjacentlyTagged", len: 2},
+            Token::Struct { name: "AdjacentlyTagged", len: 2 },
 
             Token::Str("t"),
             Token::Str("Unit"),
@@ -989,7 +1002,7 @@ fn test_adjacently_tagged_enum_deny_unknown_fields() {
 
     assert_de_tokens_error::<AdjacentlyTagged>(
         &[
-            Token::Struct { name: "AdjacentlyTagged", len: 3},
+            Token::Struct { name: "AdjacentlyTagged", len: 2 },
 
             Token::Str("t"),
             Token::Str("Unit"),
@@ -1004,7 +1017,7 @@ fn test_adjacently_tagged_enum_deny_unknown_fields() {
 
     assert_de_tokens_error::<AdjacentlyTagged>(
         &[
-            Token::Struct { name: "AdjacentlyTagged", len: 3},
+            Token::Struct { name: "AdjacentlyTagged", len: 2 },
 
             Token::Str("h"),
         ],
@@ -1013,7 +1026,7 @@ fn test_adjacently_tagged_enum_deny_unknown_fields() {
 
     assert_de_tokens_error::<AdjacentlyTagged>(
         &[
-            Token::Struct { name: "AdjacentlyTagged", len: 3},
+            Token::Struct { name: "AdjacentlyTagged", len: 2 },
 
             Token::Str("c"),
             Token::Unit,