rustdoc: remove redundant item kind class from `.item-decl > pre`

This class originated in the very first commit of `rustdoc_ng`, and was used
to add a color border around the item decl based on its kind.

https://github.com/rust-lang/rust/blob/4fd061c426902b0904c65e64a3780b21f9ab3afb/src/rustdoc_ng/html/static/main.css#L102-L106

The item decl no longer has a border, and there aren't any
kind-specific styles in modern rustdoc's rendering of this UI item.

Most of this commit is updating test cases so that they use `item-decl` to
find the `<pre>` tag instead of relying on the fact that the class name
had `rust {kind}` in it while other `<pre>` tags only had class `rust`.

1 files changed, 18 insertions, 18 deletions

diff --git a/tests/rustdoc/const-generics/const-generics-docs.rs b/tests/rustdoc/const-generics/const-generics-docs.rs
index 5bf76e3c469..543332d2c32 100644
--- a/tests/rustdoc/const-generics/const-generics-docs.rs
+++ b/tests/rustdoc/const-generics/const-generics-docs.rs
@@ -3,21 +3,21 @@
 #![crate_name = "foo"]
 
 extern crate extern_crate;
-// @has foo/fn.extern_fn.html '//pre[@class="rust fn"]' \
+// @has foo/fn.extern_fn.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'pub fn extern_fn<const N: usize>() -> impl Iterator<Item = [u8; N]>'
 pub use extern_crate::extern_fn;
-// @has foo/struct.ExternTy.html '//pre[@class="rust struct"]' \
+// @has foo/struct.ExternTy.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'pub struct ExternTy<const N: usize> {'
 pub use extern_crate::ExternTy;
-// @has foo/type.TyAlias.html '//pre[@class="rust typedef"]' \
+// @has foo/type.TyAlias.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'type TyAlias<const N: usize> = ExternTy<N>;'
 pub use extern_crate::TyAlias;
-// @has foo/trait.WTrait.html '//pre[@class="rust trait"]' \
+// @has foo/trait.WTrait.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'pub trait WTrait<const N: usize, const M: usize>'
-// @has - '//*[@class="rust trait"]' 'fn hey<const P: usize>() -> usize'
+// @has - '//div[@class="item-decl"]/pre[@class="rust"]' 'fn hey<const P: usize>() -> usize'
 pub use extern_crate::WTrait;
 
-// @has foo/trait.Trait.html '//pre[@class="rust trait"]' \
+// @has foo/trait.Trait.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'pub trait Trait<const N: usize>'
 // @has - '//*[@id="impl-Trait%3C1%3E-for-u8"]//h3[@class="code-header"]' 'impl Trait<1> for u8'
 // @has - '//*[@id="impl-Trait%3C2%3E-for-u8"]//h3[@class="code-header"]' 'impl Trait<2> for u8'
@@ -30,10 +30,10 @@ impl Trait<2> for u8 {}
 impl Trait<{1 + 2}> for u8 {}
 impl<const N: usize> Trait<N> for [u8; N] {}
 
-// @has foo/struct.Foo.html '//pre[@class="rust struct"]' \
+// @has foo/struct.Foo.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'pub struct Foo<const N: usize>where u8: Trait<N>'
 pub struct Foo<const N: usize> where u8: Trait<N>;
-// @has foo/struct.Bar.html '//pre[@class="rust struct"]' 'pub struct Bar<T, const N: usize>(_)'
+// @has foo/struct.Bar.html '//div[@class="item-decl"]/pre[@class="rust"]' 'pub struct Bar<T, const N: usize>(_)'
 pub struct Bar<T, const N: usize>([T; N]);
 
 // @has foo/struct.Foo.html '//*[@id="impl-Foo%3CM%3E"]/h3[@class="code-header"]' 'impl<const M: usize> Foo<M>where u8: Trait<M>'
@@ -56,32 +56,32 @@ impl<const M: usize> Bar<u8, M> {
     }
 }
 
-// @has foo/fn.test.html '//pre[@class="rust fn"]' \
+// @has foo/fn.test.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'pub fn test<const N: usize>() -> impl Trait<N>where u8: Trait<N>'
 pub fn test<const N: usize>() -> impl Trait<N> where u8: Trait<N> {
     2u8
 }
 
-// @has foo/fn.a_sink.html '//pre[@class="rust fn"]' \
+// @has foo/fn.a_sink.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'pub async fn a_sink<const N: usize>(v: [u8; N]) -> impl Trait<N>'
 pub async fn a_sink<const N: usize>(v: [u8; N]) -> impl Trait<N> {
     v
 }
 
-// @has foo/fn.b_sink.html '//pre[@class="rust fn"]' \
+// @has foo/fn.b_sink.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'pub async fn b_sink<const N: usize>(_: impl Trait<N>)'
 pub async fn b_sink<const N: usize>(_: impl Trait<N>) {}
 
-// @has foo/fn.concrete.html '//pre[@class="rust fn"]' \
+// @has foo/fn.concrete.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'pub fn concrete() -> [u8; 22]'
 pub fn concrete() -> [u8; 3 + std::mem::size_of::<u64>() << 1] {
     Default::default()
 }
 
-// @has foo/type.Faz.html '//pre[@class="rust typedef"]' \
+// @has foo/type.Faz.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'type Faz<const N: usize> = [u8; N];'
 pub type Faz<const N: usize> = [u8; N];
-// @has foo/type.Fiz.html '//pre[@class="rust typedef"]' \
+// @has foo/type.Fiz.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'type Fiz<const N: usize> = [[u8; N]; 48];'
 pub type Fiz<const N: usize> = [[u8; N]; 3 << 4];
 
@@ -91,7 +91,7 @@ macro_rules! define_me {
     }
 }
 
-// @has foo/struct.Foz.html '//pre[@class="rust struct"]' \
+// @has foo/struct.Foz.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'pub struct Foz<const N: usize>(_);'
 define_me!(Foz<N>);
 
@@ -103,13 +103,13 @@ impl<const N: usize> Q for [u8; N] {
     const ASSOC: usize = N;
 }
 
-// @has foo/fn.q_user.html '//pre[@class="rust fn"]' \
+// @has foo/fn.q_user.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'pub fn q_user() -> [u8; 13]'
 pub fn q_user() -> [u8; <[u8; 13] as Q>::ASSOC] {
     [0; <[u8; 13] as Q>::ASSOC]
 }
 
-// @has foo/union.Union.html '//pre[@class="rust union"]' \
+// @has foo/union.Union.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'pub union Union<const N: usize>'
 pub union Union<const N: usize> {
     // @has - //pre "pub arr: [u8; N]"
@@ -118,7 +118,7 @@ pub union Union<const N: usize> {
     pub another_arr: [(); N],
 }
 
-// @has foo/enum.Enum.html '//pre[@class="rust enum"]' \
+// @has foo/enum.Enum.html '//div[@class="item-decl"]/pre[@class="rust"]' \
 //      'pub enum Enum<const N: usize>'
 pub enum Enum<const N: usize> {
     // @has - //pre "Variant([u8; N])"