Auto merge of #106458 - albertlarsan68:move-tests, r=jyn514

Move src/test to the root

See MCP at rust-lang/compiler-team#573

There may be more changes needed.

The first commit is just the move of the files:
You can check that the first commit did not do anything else than renames by running
```
git diff --diff-filter=r -M100% <rust-lang remote>/master <first commit hash>
```
The output should be empty, because the filter excludes renames, and the match threshold for qualifying a rename is 100%.

The second one is mostly a "find and replace" of `src/test` to `tests` and whatever is needed to make CI pass.

What is left to do:
---

- [x] Move directory
- [ ] Change references to `src/test`
    - [x] Change references in-tree
    - [ ] Change references in submodules / out-of-tree docs
- [x] Make CI pass:
    - [x] Fix tidy
    - [x] Fix tests
    - [x] Bless tests if needed (shouldn't normally)
- [ ] Merge it !

1 files changed, 84 insertions, 0 deletions

diff --git a/tests/rustdoc/intra-doc/basic.rs b/tests/rustdoc/intra-doc/basic.rs
new file mode 100644
index 00000000000..39f5c298bc4
--- /dev/null
+++ b/tests/rustdoc/intra-doc/basic.rs
@@ -0,0 +1,84 @@
+// @has basic/index.html
+// @has - '//a/@href' 'struct.ThisType.html'
+// @has - '//a/@href' 'struct.ThisType.html#method.this_method'
+// @has - '//a/@href' 'enum.ThisEnum.html'
+// @has - '//a/@href' 'enum.ThisEnum.html#variant.ThisVariant'
+// @has - '//a/@href' 'trait.ThisTrait.html'
+// @has - '//a/@href' 'trait.ThisTrait.html#tymethod.this_associated_method'
+// @has - '//a/@href' 'trait.ThisTrait.html#associatedtype.ThisAssociatedType'
+// @has - '//a/@href' 'trait.ThisTrait.html#associatedconstant.THIS_ASSOCIATED_CONST'
+// @has - '//a/@href' 'trait.ThisTrait.html'
+// @has - '//a/@href' 'type.ThisAlias.html'
+// @has - '//a/@href' 'union.ThisUnion.html'
+// @has - '//a/@href' 'fn.this_function.html'
+// @has - '//a/@href' 'constant.THIS_CONST.html'
+// @has - '//a/@href' 'static.THIS_STATIC.html'
+// @has - '//a/@href' 'macro.this_macro.html'
+// @has - '//a/@href' 'trait.SoAmbiguous.html'
+// @has - '//a/@href' 'fn.SoAmbiguous.html'
+//! In this crate we would like to link to:
+//!
+//! * [`ThisType`](ThisType)
+//! * [`ThisType::this_method`](ThisType::this_method)
+//! * [`ThisEnum`](ThisEnum)
+//! * [`ThisEnum::ThisVariant`](ThisEnum::ThisVariant)
+//! * [`ThisEnum::ThisVariantCtor`](ThisEnum::ThisVariantCtor)
+//! * [`ThisTrait`](ThisTrait)
+//! * [`ThisTrait::this_associated_method`](ThisTrait::this_associated_method)
+//! * [`ThisTrait::ThisAssociatedType`](ThisTrait::ThisAssociatedType)
+//! * [`ThisTrait::THIS_ASSOCIATED_CONST`](ThisTrait::THIS_ASSOCIATED_CONST)
+//! * [`ThisAlias`](ThisAlias)
+//! * [`ThisUnion`](ThisUnion)
+//! * [`this_function`](this_function())
+//! * [`THIS_CONST`](const@THIS_CONST)
+//! * [`THIS_STATIC`](static@THIS_STATIC)
+//! * [`this_macro`](this_macro!)
+//!
+//! In addition, there's some specifics we want to look at. There's [a trait called
+//! SoAmbiguous][ambig-trait], but there's also [a function called SoAmbiguous][ambig-fn] too!
+//! Whatever shall we do?
+//!
+//! [ambig-trait]: trait@SoAmbiguous
+//! [ambig-fn]: SoAmbiguous()
+
+#[macro_export]
+macro_rules! this_macro {
+    () => {};
+}
+
+// @has basic/struct.ThisType.html '//a/@href' 'macro.this_macro.html'
+/// another link to [`this_macro!()`]
+pub struct ThisType;
+
+impl ThisType {
+    pub fn this_method() {}
+}
+pub enum ThisEnum { ThisVariant, ThisVariantCtor(u32), }
+pub trait ThisTrait {
+    type ThisAssociatedType;
+    const THIS_ASSOCIATED_CONST: u8;
+    fn this_associated_method();
+}
+pub type ThisAlias = Result<(), ()>;
+pub union ThisUnion { this_field: usize, }
+
+pub fn this_function() {}
+pub const THIS_CONST: usize = 5usize;
+pub static THIS_STATIC: usize = 5usize;
+
+pub trait SoAmbiguous {}
+
+#[allow(nonstandard_style)]
+pub fn SoAmbiguous() {}
+
+
+// @has basic/struct.SomeOtherType.html '//a/@href' 'struct.ThisType.html'
+// @has - '//a/@href' 'struct.ThisType.html#method.this_method'
+// @has - '//a/@href' 'enum.ThisEnum.html'
+// @has - '//a/@href' 'enum.ThisEnum.html#variant.ThisVariant'
+/// Shortcut links for:
+/// * [`ThisType`]
+/// * [`ThisType::this_method`]
+/// * [ThisEnum]
+/// * [ThisEnum::ThisVariant]
+pub struct SomeOtherType;