Release 1.0.89

impl Serialize and Deserialize for core::cmp::Reverse

serde/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "serde"
-version = "1.0.85" # remember to update html_root_url
+version = "1.0.89" # 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/build.rs

@@ -14,6 +14,21 @@ fn main() {
     let target = env::var("TARGET").unwrap();
     let emscripten = target == "asmjs-unknown-emscripten" || target == "wasm32-unknown-emscripten";
 
+    // std::collections::Bound was stabilized in Rust 1.17
+    // but it was moved to core::ops later in Rust 1.26:
+    // https://doc.rust-lang.org/core/ops/enum.Bound.html
+    if minor >= 26 {
+        println!("cargo:rustc-cfg=ops_bound");
+    } else if minor >= 17 && cfg!(feature = "std") {
+        println!("cargo:rustc-cfg=collections_bound");
+    }
+
+    // core::cmp::Reverse stabilized in Rust 1.19:
+    // https://doc.rust-lang.org/stable/core/cmp/struct.Reverse.html
+    if minor >= 19 {
+        println!("cargo:rustc-cfg=core_reverse");
+    }
+
     // CString::into_boxed_c_str stabilized in Rust 1.20:
     // https://doc.rust-lang.org/std/ffi/struct.CString.html#method.into_boxed_c_str
     if minor >= 20 {

serde/src/de/impls.rs

@@ -578,6 +578,9 @@ macro_rules! forwarded_impl {
 #[cfg(all(feature = "std", de_boxed_c_str))]
 forwarded_impl!((), Box<CStr>, CString::into_boxed_c_str);
 
+#[cfg(core_reverse)]
+forwarded_impl!((T), Reverse<T>, Reverse);
+
 ////////////////////////////////////////////////////////////////////////////////
 
 struct OptionVisitor<T> {
@@ -2269,6 +2272,117 @@ mod range {
 
 ////////////////////////////////////////////////////////////////////////////////
 
+#[cfg(any(ops_bound, collections_bound))]
+impl<'de, T> Deserialize<'de> for Bound<T>
+where
+    T: Deserialize<'de>,
+{
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        enum Field {
+            Unbounded,
+            Included,
+            Excluded,
+        }
+
+        impl<'de> Deserialize<'de> for Field {
+            #[inline]
+            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+            where
+                D: Deserializer<'de>,
+            {
+                struct FieldVisitor;
+
+                impl<'de> Visitor<'de> for FieldVisitor {
+                    type Value = Field;
+
+                    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+                        formatter.write_str("`Unbounded`, `Included` or `Excluded`")
+                    }
+
+                    fn visit_u32<E>(self, value: u32) -> Result<Self::Value, E>
+                    where
+                        E: Error,
+                    {
+                        match value {
+                            0 => Ok(Field::Unbounded),
+                            1 => Ok(Field::Included),
+                            2 => Ok(Field::Excluded),
+                            _ => Err(Error::invalid_value(
+                                Unexpected::Unsigned(value as u64),
+                                &self,
+                            )),
+                        }
+                    }
+
+                    fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
+                    where
+                        E: Error,
+                    {
+                        match value {
+                            "Unbounded" => Ok(Field::Unbounded),
+                            "Included" => Ok(Field::Included),
+                            "Excluded" => Ok(Field::Excluded),
+                            _ => Err(Error::unknown_variant(value, VARIANTS)),
+                        }
+                    }
+
+                    fn visit_bytes<E>(self, value: &[u8]) -> Result<Self::Value, E>
+                    where
+                        E: Error,
+                    {
+                        match value {
+                            b"Unbounded" => Ok(Field::Unbounded),
+                            b"Included" => Ok(Field::Included),
+                            b"Excluded" => Ok(Field::Excluded),
+                            _ => match str::from_utf8(value) {
+                                Ok(value) => Err(Error::unknown_variant(value, VARIANTS)),
+                                Err(_) => {
+                                    Err(Error::invalid_value(Unexpected::Bytes(value), &self))
+                                }
+                            },
+                        }
+                    }
+                }
+
+                deserializer.deserialize_identifier(FieldVisitor)
+            }
+        }
+
+        struct BoundVisitor<T>(PhantomData<Bound<T>>);
+
+        impl<'de, T> Visitor<'de> for BoundVisitor<T>
+        where
+            T: Deserialize<'de>,
+        {
+            type Value = Bound<T>;
+
+            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+                formatter.write_str("enum Bound")
+            }
+
+            fn visit_enum<A>(self, data: A) -> Result<Self::Value, A::Error>
+            where
+                A: EnumAccess<'de>,
+            {
+                match try!(data.variant()) {
+                    (Field::Unbounded, v) => v.unit_variant().map(|()| Bound::Unbounded),
+                    (Field::Included, v) => v.newtype_variant().map(Bound::Included),
+                    (Field::Excluded, v) => v.newtype_variant().map(Bound::Excluded),
+                }
+            }
+        }
+
+        const VARIANTS: &'static [&'static str] = &["Unbounded", "Included", "Excluded"];
+
+        deserializer.deserialize_enum("Bound", VARIANTS, BoundVisitor(PhantomData))
+    }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
 macro_rules! nonzero_integers {
     ( $( $T: ident, )+ ) => {
         $(

serde/src/de/mod.rs

@@ -59,13 +59,13 @@
 //!    - Box\<T\>
 //!    - Box\<\[T\]\>
 //!    - Box\<str\>
-//!    - Rc\<T\>
-//!    - Arc\<T\>
 //!    - Cow\<'a, T\>
 //!    - Cell\<T\>
 //!    - RefCell\<T\>
 //!    - Mutex\<T\>
 //!    - RwLock\<T\>
+//!    - Rc\<T\>&emsp;*(if* features = ["rc"] *is enabled)*
+//!    - Arc\<T\>&emsp;*(if* features = ["rc"] *is enabled)*
 //!  - **Collection types**:
 //!    - BTreeMap\<K, V\>
 //!    - BTreeSet\<T\>
@@ -89,6 +89,7 @@
 //!    - PathBuf
 //!    - Range\<T\>
 //!    - RangeInclusive\<T\>
+//!    - Bound\<T\>
 //!    - num::NonZero*
 //!    - `!` *(unstable)*
 //!  - **Net types**:

serde/src/lib.rs

@@ -75,7 +75,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 
 // Serde types in rustdoc of other crates get linked to here.
-#![doc(html_root_url = "https://docs.rs/serde/1.0.85")]
+#![doc(html_root_url = "https://docs.rs/serde/1.0.89")]
 // Support using Serde without the standard library!
 #![cfg_attr(not(feature = "std"), no_std)]
 // Unstable functionality only if the user asks for it. For tracking and
@@ -86,52 +86,35 @@
 #![cfg_attr(feature = "alloc", feature(alloc))]
 #![cfg_attr(feature = "cargo-clippy", allow(renamed_and_removed_lints))]
 #![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
-// Ignored clippy lints
+// Ignored clippy and clippy_pedantic lints
 #![cfg_attr(
     feature = "cargo-clippy",
     allow(
-        cast_lossless,
+        // not available in our oldest supported compiler
         const_static_lifetime,
-        doc_markdown,
+        empty_enum,
-        linkedlist,
-        needless_pass_by_value,
         redundant_field_names,
-        type_complexity,
-        unreadable_literal,
-        zero_prefixed_literal
-    )
-)]
-// Ignored clippy_pedantic lints
-#![cfg_attr(feature = "cargo-clippy", allow(
         // integer and float ser/de requires these sorts of casts
         cast_possible_truncation,
         cast_possible_wrap,
         cast_precision_loss,
         cast_sign_loss,
-// simplifies some macros
-    invalid_upcast_comparisons,
         // things are often more readable this way
-    decimal_literal_representation,
+        cast_lossless,
         module_name_repetitions,
-    option_unwrap_used,
-    result_unwrap_used,
-    shadow_reuse,
         single_match_else,
+        type_complexity,
         use_self,
+        zero_prefixed_literal,
         // not practical
-    indexing_slicing,
+        needless_pass_by_value,
-    many_single_char_names,
-    missing_docs_in_private_items,
         similar_names,
-// alternative is not stable
+        // preference
-    empty_enum,
+        doc_markdown,
-    use_debug,
+    )
-))]
+)]
-// Blacklisted Rust lints.
+// Rustc lints.
-//
+#![deny(missing_docs, unused_imports)]
-// Compiler bug involving unused_imports:
-// https://github.com/rust-lang/rust/issues/51661
-#![deny(missing_docs, /*unused_imports*/)]
 
 ////////////////////////////////////////////////////////////////////////////////
 
@@ -219,11 +202,20 @@ mod lib {
     #[cfg(feature = "std")]
     pub use std::time::{SystemTime, UNIX_EPOCH};
 
-    #[cfg(any(core_duration, feature = "std"))]
+    #[cfg(all(feature = "std", collections_bound))]
-    pub use self::core::time::Duration;
+    pub use std::collections::Bound;
+
+    #[cfg(core_reverse)]
+    pub use self::core::cmp::Reverse;
+
+    #[cfg(ops_bound)]
+    pub use self::core::ops::Bound;
 
     #[cfg(range_inclusive)]
     pub use self::core::ops::RangeInclusive;
+
+    #[cfg(any(core_duration, feature = "std"))]
+    pub use self::core::time::Duration;
 }
 
 ////////////////////////////////////////////////////////////////////////////////

serde/src/private/de.rs

@@ -2709,7 +2709,7 @@ where
         }
 
         Err(Error::custom(format_args!(
-            "no variant of enum {} not found in flattened data",
+            "no variant of enum {} found in flattened data",
             name
         )))
     }

serde/src/ser/impls.rs

@@ -160,10 +160,12 @@ macro_rules! array_impls {
     }
 }
 
-array_impls!(01 02 03 04 05 06 07 08 09 10
+array_impls! {
+    01 02 03 04 05 06 07 08 09 10
     11 12 13 14 15 16 17 18 19 20
     21 22 23 24 25 26 27 28 29 30
-             31 32);
+    31 32
+}
 
 ////////////////////////////////////////////////////////////////////////////////
 
@@ -256,6 +258,29 @@ where
 
 ////////////////////////////////////////////////////////////////////////////////
 
+#[cfg(any(ops_bound, collections_bound))]
+impl<T> Serialize for Bound<T>
+where
+    T: Serialize,
+{
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        match *self {
+            Bound::Unbounded => serializer.serialize_unit_variant("Bound", 0, "Unbounded"),
+            Bound::Included(ref value) => {
+                serializer.serialize_newtype_variant("Bound", 1, "Included", value)
+            }
+            Bound::Excluded(ref value) => {
+                serializer.serialize_newtype_variant("Bound", 2, "Excluded", value)
+            }
+        }
+    }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
 impl Serialize for () {
     #[inline]
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
@@ -799,3 +824,17 @@ where
         self.0.serialize(serializer)
     }
 }
+
+#[cfg(core_reverse)]
+impl<T> Serialize for Reverse<T>
+where
+    T: Serialize,
+{
+    #[inline]
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        self.0.serialize(serializer)
+    }
+}

serde/src/ser/mod.rs

@@ -56,13 +56,13 @@
 //!    - PhantomData\<T\>
 //!  - **Wrapper types**:
 //!    - Box\<T\>
-//!    - Rc\<T\>
-//!    - Arc\<T\>
 //!    - Cow\<'a, T\>
 //!    - Cell\<T\>
 //!    - RefCell\<T\>
 //!    - Mutex\<T\>
 //!    - RwLock\<T\>
+//!    - Rc\<T\>&emsp;*(if* features = ["rc"] *is enabled)*
+//!    - Arc\<T\>&emsp;*(if* features = ["rc"] *is enabled)*
 //!  - **Collection types**:
 //!    - BTreeMap\<K, V\>
 //!    - BTreeSet\<T\>
@@ -84,6 +84,7 @@
 //!    - PathBuf
 //!    - Range\<T\>
 //!    - RangeInclusive\<T\>
+//!    - Bound\<T\>
 //!    - num::NonZero*
 //!    - `!` *(unstable)*
 //!  - **Net types**:

serde_derive/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "serde_derive"
-version = "1.0.85" # remember to update html_root_url
+version = "1.0.89" # 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)]"

serde_derive/src/de.rs

@@ -1149,7 +1149,11 @@ fn prepare_enum_variant_enum(
         .enumerate()
         .filter(|&(_, variant)| !variant.attrs.skip_deserializing())
         .map(|(i, variant)| {
-            (variant.attrs.name().deserialize_name(), field_i(i), variant.attrs.aliases())
+            (
+                variant.attrs.name().deserialize_name(),
+                field_i(i),
+                variant.attrs.aliases(),
+            )
         })
         .collect();
 
@@ -2275,7 +2279,11 @@ fn deserialize_struct_as_struct_visitor(
         .enumerate()
         .filter(|&(_, field)| !field.attrs.skip_deserializing())
         .map(|(i, field)| {
-            (field.attrs.name().deserialize_name(), field_i(i), field.attrs.aliases())
+            (
+                field.attrs.name().deserialize_name(),
+                field_i(i),
+                field.attrs.aliases(),
+            )
         })
         .collect();
 
@@ -2304,7 +2312,11 @@ fn deserialize_struct_as_map_visitor(
         .enumerate()
         .filter(|&(_, field)| !field.attrs.skip_deserializing() && !field.attrs.flatten())
         .map(|(i, field)| {
-            (field.attrs.name().deserialize_name(), field_i(i), field.attrs.aliases())
+            (
+                field.attrs.name().deserialize_name(),
+                field_i(i),
+                field.attrs.aliases(),
+            )
         })
         .collect();
 
@@ -2372,7 +2384,12 @@ fn deserialize_map(
                     let (wrapper, wrapper_ty) = wrap_deserialize_field_with(params, field.ty, path);
                     quote!({
                         #wrapper
-                        try!(_serde::de::MapAccess::next_value::<#wrapper_ty>(&mut __map)).value
+                        match _serde::de::MapAccess::next_value::<#wrapper_ty>(&mut __map) {
+                            _serde::export::Ok(__wrapper) => __wrapper.value,
+                            _serde::export::Err(__err) => {
+                                return _serde::export::Err(__err);
+                            }
+                        }
                     })
                 }
             };
@@ -2439,7 +2456,7 @@ fn deserialize_map(
 
     let extract_collected = fields_names
         .iter()
-        .filter(|&&(field, _)| field.attrs.flatten())
+        .filter(|&&(field, _)| field.attrs.flatten() && !field.attrs.skip_deserializing())
         .map(|&(field, ref name)| {
             let field_ty = field.ty;
             let func = match field.attrs.deserialize_with() {
@@ -2459,7 +2476,9 @@ fn deserialize_map(
 
     let collected_deny_unknown_fields = if cattrs.has_flatten() && cattrs.deny_unknown_fields() {
         Some(quote! {
-            if let _serde::export::Some(_serde::export::Some((__key, _))) = __collect.into_iter().filter(|x| x.is_some()).next() {
+            if let _serde::export::Some(_serde::export::Some((__key, _))) =
+                __collect.into_iter().filter(_serde::export::Option::is_some).next()
+            {
                 if let _serde::export::Some(__key) = __key.as_str() {
                     return _serde::export::Err(
                         _serde::de::Error::custom(format_args!("unknown field `{}`", &__key)));
@@ -2537,7 +2556,11 @@ fn deserialize_struct_as_struct_in_place_visitor(
         .enumerate()
         .filter(|&(_, field)| !field.attrs.skip_deserializing())
         .map(|(i, field)| {
-            (field.attrs.name().deserialize_name(), field_i(i), field.attrs.aliases())
+            (
+                field.attrs.name().deserialize_name(),
+                field_i(i),
+                field.attrs.aliases(),
+            )
         })
         .collect();
 
@@ -2599,7 +2622,12 @@ fn deserialize_map_in_place(
                     let (wrapper, wrapper_ty) = wrap_deserialize_field_with(params, field.ty, path);
                     quote!({
                         #wrapper
-                        self.place.#member = try!(_serde::de::MapAccess::next_value::<#wrapper_ty>(&mut __map)).value
+                        self.place.#member = match _serde::de::MapAccess::next_value::<#wrapper_ty>(&mut __map) {
+                            _serde::export::Ok(__wrapper) => __wrapper.value,
+                            _serde::export::Err(__err) => {
+                                return _serde::export::Err(__err);
+                            }
+                        };
                     })
                 }
             };

serde_derive/src/internals/attr.rs

@@ -116,8 +116,10 @@ impl<'c, T> VecAttr<'c, T> {
     fn at_most_one(mut self) -> Result<Option<T>, ()> {
         if self.values.len() > 1 {
             let dup_token = self.first_dup_tokens;
-            self.cx
+            self.cx.error_spanned_by(
-                .error_spanned_by(dup_token, format!("duplicate serde attribute `{}`", self.name));
+                dup_token,
+                format!("duplicate serde attribute `{}`", self.name),
+            );
             Err(())
         } else {
             Ok(self.values.pop())

serde_derive/src/internals/check.rs

@@ -76,25 +76,6 @@ fn check_flatten_field(cx: &Ctxt, style: Style, field: &Field) {
         }
         _ => {}
     }
-    if field.attrs.skip_serializing() {
-        cx.error_spanned_by(
-            field.original,
-            "#[serde(flatten)] can not be combined with \
-             #[serde(skip_serializing)]",
-        );
-    } else if field.attrs.skip_serializing_if().is_some() {
-        cx.error_spanned_by(
-            field.original,
-            "#[serde(flatten)] can not be combined with \
-             #[serde(skip_serializing_if = \"...\")]",
-        );
-    } else if field.attrs.skip_deserializing() {
-        cx.error_spanned_by(
-            field.original,
-            "#[serde(flatten)] can not be combined with \
-             #[serde(skip_deserializing)]",
-        );
-    }
 }
 
 /// The `other` attribute must be used at most once and it must be the last

serde_derive/src/lib.rs

@@ -13,7 +13,7 @@
 //!
 //! [https://serde.rs/derive.html]: https://serde.rs/derive.html
 
-#![doc(html_root_url = "https://docs.rs/serde_derive/1.0.85")]
+#![doc(html_root_url = "https://docs.rs/serde_derive/1.0.89")]
 #![cfg_attr(feature = "cargo-clippy", allow(renamed_and_removed_lints))]
 #![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
 // Ignored clippy lints

serde_derive/src/ser.rs

@@ -289,37 +289,38 @@ fn serialize_struct(params: &Parameters, fields: &[Field], cattrs: &attr::Contai
     }
 }
 
+fn serialize_struct_tag_field(cattrs: &attr::Container, struct_trait: &StructTrait) -> TokenStream {
+    match *cattrs.tag() {
+        attr::TagType::Internal { ref tag } => {
+            let type_name = cattrs.name().serialize_name();
+            let func = struct_trait.serialize_field(Span::call_site());
+            quote! {
+                try!(#func(&mut __serde_state, #tag, #type_name));
+            }
+        }
+        _ => quote! {},
+    }
+}
+
 fn serialize_struct_as_struct(
     params: &Parameters,
     fields: &[Field],
     cattrs: &attr::Container,
 ) -> Fragment {
-    let mut serialize_fields =
+    let serialize_fields =
         serialize_struct_visitor(fields, params, false, &StructTrait::SerializeStruct);
 
     let type_name = cattrs.name().serialize_name();
 
-    let additional_field_count: usize = match *cattrs.tag() {
+    let tag_field = serialize_struct_tag_field(cattrs, &StructTrait::SerializeStruct);
-        attr::TagType::Internal { ref tag } => {
+    let tag_field_exists = !tag_field.is_empty();
-            let func = StructTrait::SerializeStruct.serialize_field(Span::call_site());
-            serialize_fields.insert(
-                0,
-                quote! {
-                    try!(#func(&mut __serde_state, #tag, #type_name));
-                },
-            );
-
-            1
-        }
-        _ => 0,
-    };
 
     let mut serialized_fields = fields
         .iter()
         .filter(|&field| !field.attrs.skip_serializing())
         .peekable();
 
-    let let_mut = mut_if(serialized_fields.peek().is_some() || additional_field_count > 0);
+    let let_mut = mut_if(serialized_fields.peek().is_some() || tag_field_exists);
 
     let len = serialized_fields
         .map(|field| match field.attrs.skip_serializing_if() {
@@ -330,12 +331,13 @@ fn serialize_struct_as_struct(
             }
         })
         .fold(
-            quote!(#additional_field_count),
+            quote!(#tag_field_exists as usize),
             |sum, expr| quote!(#sum + #expr),
         );
 
     quote_block! {
         let #let_mut __serde_state = try!(_serde::Serializer::serialize_struct(__serializer, #type_name, #len));
+        #tag_field
         #(#serialize_fields)*
         _serde::ser::SerializeStruct::end(__serde_state)
     }
@@ -349,12 +351,15 @@ fn serialize_struct_as_map(
     let serialize_fields =
         serialize_struct_visitor(fields, params, false, &StructTrait::SerializeMap);
 
+    let tag_field = serialize_struct_tag_field(cattrs, &StructTrait::SerializeMap);
+    let tag_field_exists = !tag_field.is_empty();
+
     let mut serialized_fields = fields
         .iter()
         .filter(|&field| !field.attrs.skip_serializing())
         .peekable();
 
-    let let_mut = mut_if(serialized_fields.peek().is_some());
+    let let_mut = mut_if(serialized_fields.peek().is_some() || tag_field_exists);
 
     let len = if cattrs.has_flatten() {
         quote!(_serde::export::None)
@@ -367,12 +372,16 @@ fn serialize_struct_as_map(
                     quote!(if #path(#field_expr) { 0 } else { 1 })
                 }
             })
-            .fold(quote!(0), |sum, expr| quote!(#sum + #expr));
+            .fold(
+                quote!(#tag_field_exists as usize),
+                |sum, expr| quote!(#sum + #expr),
+            );
         quote!(_serde::export::Some(#len))
     };
 
     quote_block! {
         let #let_mut __serde_state = try!(_serde::Serializer::serialize_map(__serializer, #len));
+        #tag_field
         #(#serialize_fields)*
         _serde::ser::SerializeMap::end(__serde_state)
     }

serde_test/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "serde_test"
-version = "1.0.85" # remember to update html_root_url
+version = "1.0.89" # 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/lib.rs

@@ -144,7 +144,7 @@
 //! # }
 //! ```
 
-#![doc(html_root_url = "https://docs.rs/serde_test/1.0.85")]
+#![doc(html_root_url = "https://docs.rs/serde_test/1.0.89")]
 #![cfg_attr(feature = "cargo-clippy", allow(renamed_and_removed_lints))]
 #![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
 // Ignored clippy lints

test_suite/README.md

@@ -0,0 +1,18 @@
+#### To run unit tests
+
+```sh
+cargo test
+```
+
+#### To run ui tests
+
+```sh
+(cd deps && cargo clean && cargo update && cargo build)
+cargo test --features compiletest
+```
+
+#### To update goldens after running ui tests
+
+```sh
+tests/ui/update-references.sh
+```

test_suite/tests/compiletest.rs

@@ -15,6 +15,7 @@ fn ui() {
              --extern serde_derive \
              ",
         )),
+        build_base: std::path::PathBuf::from("../target/ui"),
         ..Default::default()
     });
 }

test_suite/tests/test_annotations.rs

@@ -574,7 +574,11 @@ fn test_rename_struct() {
     );
 
     assert_de_tokens(
-        &AliasStruct { a1: 1, a2: 2, a4: 3 },
+        &AliasStruct {
+            a1: 1,
+            a2: 2,
+            a4: 3,
+        },
         &[
             Token::Struct {
                 name: "AliasStruct",
@@ -591,7 +595,11 @@ fn test_rename_struct() {
     );
 
     assert_de_tokens(
-        &AliasStruct { a1: 1, a2: 2, a4: 3 },
+        &AliasStruct {
+            a1: 1,
+            a2: 2,
+            a4: 3,
+        },
         &[
             Token::Struct {
                 name: "AliasStruct",
@@ -665,7 +673,7 @@ enum AliasEnum {
         b: i8,
         #[serde(alias = "e", rename = "f")]
         d: i8,
-    }
+    },
 }
 
 #[test]
@@ -756,11 +764,7 @@ fn test_rename_enum() {
     );
 
     assert_de_tokens(
-        &AliasEnum::SailorMoon {
+        &AliasEnum::SailorMoon { a: 0, b: 1, d: 2 },
-            a: 0,
-            b: 1,
-            d: 2,
-        },
         &[
             Token::StructVariant {
                 name: "AliasEnum",
@@ -778,11 +782,7 @@ fn test_rename_enum() {
     );
 
     assert_de_tokens(
-        &AliasEnum::SailorMoon {
+        &AliasEnum::SailorMoon { a: 0, b: 1, d: 2 },
-            a: 0,
-            b: 1,
-            d: 2,
-        },
         &[
             Token::StructVariant {
                 name: "AliasEnum",
@@ -803,13 +803,11 @@ fn test_rename_enum() {
 #[test]
 fn test_unknown_field_rename_enum() {
     assert_de_tokens_error::<AliasEnum>(
-        &[
+        &[Token::StructVariant {
-            Token::StructVariant {
             name: "AliasEnum",
             variant: "SailorMoon",
             len: 3,
-            },
+        }],
-        ],
         "unknown variant `SailorMoon`, expected `sailor_moon`",
     );
 

test_suite/tests/test_de.rs

@@ -6,6 +6,7 @@ use std::default::Default;
 use std::ffi::{CStr, CString, OsString};
 use std::net;
 use std::num::Wrapping;
+use std::ops::Bound;
 use std::path::{Path, PathBuf};
 use std::rc::{Rc, Weak as RcWeak};
 use std::sync::{Arc, Weak as ArcWeak};
@@ -836,6 +837,23 @@ declare_tests! {
             Token::SeqEnd,
         ],
     }
+    test_bound {
+        Bound::Unbounded::<()> => &[
+            Token::Enum { name: "Bound" },
+            Token::Str("Unbounded"),
+            Token::Unit,
+        ],
+        Bound::Included(0) => &[
+            Token::Enum { name: "Bound" },
+            Token::Str("Included"),
+            Token::U8(0),
+        ],
+        Bound::Excluded(0) => &[
+            Token::Enum { name: "Bound" },
+            Token::Str("Excluded"),
+            Token::U8(0),
+        ],
+    }
     test_path {
         Path::new("/usr/local/lib") => &[
             Token::BorrowedStr("/usr/local/lib"),

test_suite/tests/test_gen.rs

@@ -522,6 +522,13 @@ fn test_gen() {
     }
     assert::<FlattenWith>();
 
+    #[derive(Serialize, Deserialize)]
+    #[serde(deny_unknown_fields)]
+    struct FlattenDenyUnknown<T> {
+        #[serde(flatten)]
+        t: T,
+    }
+
     #[derive(Serialize, Deserialize)]
     struct StaticStrStruct<'a> {
         a: &'a str,
@@ -665,6 +672,25 @@ fn test_gen() {
         ty: &'a str,
         id: String,
     }
+
+    #[derive(Serialize, Deserialize)]
+    struct FlattenSkipSerializing<T> {
+        #[serde(flatten, skip_serializing)]
+        #[allow(dead_code)]
+        flat: T,
+    }
+
+    #[derive(Serialize, Deserialize)]
+    struct FlattenSkipSerializingIf<T> {
+        #[serde(flatten, skip_serializing_if = "StdOption::is_none")]
+        flat: StdOption<T>,
+    }
+
+    #[derive(Serialize, Deserialize)]
+    struct FlattenSkipDeserializing<T> {
+        #[serde(flatten, skip_deserializing)]
+        flat: T,
+    }
 }
 
 //////////////////////////////////////////////////////////////////////////

test_suite/tests/test_macros.rs

@@ -1424,6 +1424,48 @@ fn test_internally_tagged_braced_struct_with_zero_fields() {
     );
 }
 
+#[test]
+fn test_internally_tagged_struct_with_flattened_field() {
+    #[derive(Debug, PartialEq, Serialize, Deserialize)]
+    #[serde(tag = "tag_struct")]
+    pub struct Struct {
+        #[serde(flatten)]
+        pub flat: Enum,
+    }
+
+    #[derive(Debug, PartialEq, Serialize, Deserialize)]
+    #[serde(tag = "tag_enum", content = "content")]
+    pub enum Enum {
+        A(u64),
+    }
+
+    assert_tokens(
+        &Struct { flat: Enum::A(0) },
+        &[
+            Token::Map { len: None },
+            Token::Str("tag_struct"),
+            Token::Str("Struct"),
+            Token::Str("tag_enum"),
+            Token::Str("A"),
+            Token::Str("content"),
+            Token::U64(0),
+            Token::MapEnd,
+        ],
+    );
+
+    assert_de_tokens(
+        &Struct { flat: Enum::A(0) },
+        &[
+            Token::Map { len: None },
+            Token::Str("tag_enum"),
+            Token::Str("A"),
+            Token::Str("content"),
+            Token::U64(0),
+            Token::MapEnd,
+        ],
+    );
+}
+
 #[test]
 fn test_enum_in_untagged_enum() {
     #[derive(Debug, PartialEq, Serialize, Deserialize)]

test_suite/tests/test_ser.rs

@@ -6,6 +6,7 @@ use std::ffi::CString;
 use std::mem;
 use std::net;
 use std::num::Wrapping;
+use std::ops::Bound;
 use std::path::{Path, PathBuf};
 use std::rc::{Rc, Weak as RcWeak};
 use std::sync::{Arc, Weak as ArcWeak};
@@ -375,6 +376,23 @@ declare_tests! {
             Token::StructEnd,
         ],
     }
+    test_bound {
+        Bound::Unbounded::<()> => &[
+            Token::Enum { name: "Bound" },
+            Token::Str("Unbounded"),
+            Token::Unit,
+        ],
+        Bound::Included(0u8) => &[
+            Token::Enum { name: "Bound" },
+            Token::Str("Included"),
+            Token::U8(0),
+        ],
+        Bound::Excluded(0u8) => &[
+            Token::Enum { name: "Bound" },
+            Token::Str("Excluded"),
+            Token::U8(0),
+        ],
+    }
     test_path {
         Path::new("/usr/local/lib") => &[
             Token::Str("/usr/local/lib"),

test_suite/tests/ui/conflict/flatten-skip-deserializing.rs

@@ -1,14 +0,0 @@
-use serde_derive::Deserialize;
-
-#[derive(Deserialize)]
-struct Foo {
-    #[serde(flatten, skip_deserializing)]
-    other: Other,
-}
-
-#[derive(Deserialize)]
-struct Other {
-    x: u32,
-}
-
-fn main() {}

test_suite/tests/ui/conflict/flatten-skip-deserializing.stderr

@@ -1,9 +0,0 @@
-error: #[serde(flatten)] can not be combined with #[serde(skip_deserializing)]
- --> $DIR/flatten-skip-deserializing.rs:5:5
-  |
-5 | /     #[serde(flatten, skip_deserializing)]
-6 | |     other: Other,
-  | |________________^
-
-error: aborting due to previous error
-

test_suite/tests/ui/conflict/flatten-skip-serializing-if.rs

@@ -1,14 +0,0 @@
-use serde_derive::Serialize;
-
-#[derive(Serialize)]
-struct Foo {
-    #[serde(flatten, skip_serializing_if = "Option::is_none")]
-    other: Option<Other>,
-}
-
-#[derive(Serialize)]
-struct Other {
-    x: u32,
-}
-
-fn main() {}

test_suite/tests/ui/conflict/flatten-skip-serializing-if.stderr

@@ -1,9 +0,0 @@
-error: #[serde(flatten)] can not be combined with #[serde(skip_serializing_if = "...")]
- --> $DIR/flatten-skip-serializing-if.rs:5:5
-  |
-5 | /     #[serde(flatten, skip_serializing_if = "Option::is_none")]
-6 | |     other: Option<Other>,
-  | |________________________^
-
-error: aborting due to previous error
-

test_suite/tests/ui/conflict/flatten-skip-serializing.rs

@@ -1,14 +0,0 @@
-use serde_derive::Serialize;
-
-#[derive(Serialize)]
-struct Foo {
-    #[serde(flatten, skip_serializing)]
-    other: Other,
-}
-
-#[derive(Serialize)]
-struct Other {
-    x: u32,
-}
-
-fn main() {}

test_suite/tests/ui/conflict/flatten-skip-serializing.stderr

@@ -1,9 +0,0 @@
-error: #[serde(flatten)] can not be combined with #[serde(skip_serializing)]
- --> $DIR/flatten-skip-serializing.rs:5:5
-  |
-5 | /     #[serde(flatten, skip_serializing)]
-6 | |     other: Other,
-  | |________________^
-
-error: aborting due to previous error
-

test_suite/tests/ui/update-references.sh

@@ -19,32 +19,20 @@
 # If you find yourself manually editing a foo.stderr file, you're
 # doing it wrong.
 
-if [[ "$1" == "--help" || "$1" == "-h" || "$1" == "" || "$2" == "" ]]; then
+cd "$(dirname "${BASH_SOURCE[0]}")"
-    echo "usage: $0 <build-directory> <relative-path-to-rs-files>"
+BUILD_DIR="../../../target/ui"
-    echo ""
+
-    echo "For example:"
+for testcase in */*.rs; do
-    echo "   $0 ../../../build/x86_64-apple-darwin/test/ui *.rs */*.rs"
+    STDERR_NAME="${testcase/%.rs/.stderr}"
+    STDOUT_NAME="${testcase/%.rs/.stdout}"
+    if [ -f "$BUILD_DIR/$STDOUT_NAME" ] && \
+           ! (diff "$BUILD_DIR/$STDOUT_NAME" "$STDOUT_NAME" >& /dev/null); then
+        echo "updating $STDOUT_NAME"
+        cp "$BUILD_DIR/$STDOUT_NAME" "$STDOUT_NAME"
     fi
-
+    if [ -f "$BUILD_DIR/$STDERR_NAME" ] && \
-MYDIR=$(dirname $0)
+           ! (diff "$BUILD_DIR/$STDERR_NAME" "$STDERR_NAME" >& /dev/null); then
-
+        echo "updating $STDERR_NAME"
-BUILD_DIR="$1"
+        cp "$BUILD_DIR/$STDERR_NAME" "$STDERR_NAME"
-shift
-
-while [[ "$1" != "" ]]; do
-    STDERR_NAME="${1/%.rs/.stderr}"
-    STDOUT_NAME="${1/%.rs/.stdout}"
-    shift
-    if [ -f $BUILD_DIR/$STDOUT_NAME ] && \
-           ! (diff $BUILD_DIR/$STDOUT_NAME $MYDIR/$STDOUT_NAME >& /dev/null); then
-        echo updating $MYDIR/$STDOUT_NAME
-        cp $BUILD_DIR/$STDOUT_NAME $MYDIR/$STDOUT_NAME
-    fi
-    if [ -f $BUILD_DIR/$STDERR_NAME ] && \
-           ! (diff $BUILD_DIR/$STDERR_NAME $MYDIR/$STDERR_NAME >& /dev/null); then
-        echo updating $MYDIR/$STDERR_NAME
-        cp $BUILD_DIR/$STDERR_NAME $MYDIR/$STDERR_NAME
     fi
 done
-
-