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, 0 insertions, 21 deletions

diff --git a/src/test/rustdoc/macro-higher-kinded-function.rs b/src/test/rustdoc/macro-higher-kinded-function.rs
deleted file mode 100644
index b8c52b7b791..00000000000
--- a/src/test/rustdoc/macro-higher-kinded-function.rs
+++ /dev/null
@@ -1,21 +0,0 @@
-#![crate_name = "foo"]
-
-pub struct TyCtxt<'tcx>(&'tcx u8);
-
-macro_rules! gen {
-    ($(($name:ident, $tcx:lifetime, [$k:ty], [$r:ty]))*) => {
-        pub struct Providers {
-            $(pub $name: for<$tcx> fn(TyCtxt<$tcx>, $k) -> $r,)*
-        }
-    }
-}
-
-// @has 'foo/struct.Providers.html'
-// @has - '//*[@class="item-decl"]//code' "pub a: for<'tcx> fn(_: TyCtxt<'tcx>, _: u8) -> i8,"
-// @has - '//*[@class="item-decl"]//code' "pub b: for<'tcx> fn(_: TyCtxt<'tcx>, _: u16) -> i16,"
-// @has - '//*[@id="structfield.a"]/code' "a: for<'tcx> fn(_: TyCtxt<'tcx>, _: u8) -> i8"
-// @has - '//*[@id="structfield.b"]/code' "b: for<'tcx> fn(_: TyCtxt<'tcx>, _: u16) -> i16"
-gen! {
-    (a, 'tcx, [u8], [i8])
-    (b, 'tcx, [u16], [i16])
-}