Add test for sidebar elements in the "All types" page

src/test/rustdoc/sidebar-all-page.rs

@@ -0,0 +1,35 @@
+#![crate_name = "foo"]
+
+#![feature(rustdoc_internals)]
+
+// @has 'foo/all.html'
+// @has - '//*[@class="sidebar-elems"]//li' 'Structs'
+// @has - '//*[@class="sidebar-elems"]//li' 'Enums'
+// @has - '//*[@class="sidebar-elems"]//li' 'Unions'
+// @has - '//*[@class="sidebar-elems"]//li' 'Functions'
+// @has - '//*[@class="sidebar-elems"]//li' 'Traits'
+// @has - '//*[@class="sidebar-elems"]//li' 'Macros'
+// @has - '//*[@class="sidebar-elems"]//li' 'Type Definitions'
+// @has - '//*[@class="sidebar-elems"]//li' 'Constants'
+// @has - '//*[@class="sidebar-elems"]//li' 'Statics'
+// @has - '//*[@class="sidebar-elems"]//li' 'Primitive Types'
+
+pub struct Foo;
+pub enum Enum {
+    A,
+}
+pub union Bar {
+    a: u8,
+    b: u16,
+}
+pub fn foo() {}
+pub trait Trait {}
+#[macro_export]
+macro_rules! foo {
+    () => {}
+}
+pub type Type = u8;
+pub const FOO: u8 = 0;
+pub static BAR: u8 = 0;
+#[doc(primitive = "u8")]
+mod u8 {}