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, 60 deletions

diff --git a/src/test/ui/transmutability/arrays/should_inherit_alignment.rs b/src/test/ui/transmutability/arrays/should_inherit_alignment.rs
deleted file mode 100644
index b00e5c7e400..00000000000
--- a/src/test/ui/transmutability/arrays/should_inherit_alignment.rs
+++ /dev/null
@@ -1,60 +0,0 @@
-// check-pass
-//! An array must inherit the alignment of its inner type.
-
-#![crate_type = "lib"]
-#![feature(transmutability)]
-#![allow(dead_code, incomplete_features, non_camel_case_types)]
-
-mod assert {
-    use std::mem::{Assume, BikeshedIntrinsicFrom};
-    pub struct Context;
-
-    pub fn is_maybe_transmutable<Src, Dst>()
-    where
-        Dst: BikeshedIntrinsicFrom<Src, Context, {
-            Assume::ALIGNMENT
-                .and(Assume::LIFETIMES)
-                .and(Assume::SAFETY)
-                .and(Assume::VALIDITY)
-        }>
-    {}
-}
-
-#[derive(Clone, Copy)] #[repr(u8)] enum Ox00 { V = 0x00 }
-#[derive(Clone, Copy)] #[repr(u8)] enum Ox01 { V = 0x01 }
-#[derive(Clone, Copy)] #[repr(u8)] enum OxFF { V = 0xFF }
-
-#[repr(C)]
-union Uninit {
-    a: (),
-    b: OxFF,
-}
-
-#[repr(C, align(2))] struct align_2(Ox00);
-
-fn len_0() {
-    #[repr(C)] struct ImplicitlyPadded([align_2; 0], Ox01);
-    #[repr(C)] struct ExplicitlyPadded(Ox01, Uninit);
-
-    #[repr(C)] struct Struct();
-    assert::is_maybe_transmutable::<ImplicitlyPadded, ExplicitlyPadded>();
-    assert::is_maybe_transmutable::<ExplicitlyPadded, ImplicitlyPadded>();
-}
-
-fn len_1() {
-    #[repr(C)] struct ImplicitlyPadded([align_2; 1], Ox01);
-    #[repr(C)] struct ExplicitlyPadded(Ox00, Uninit, Ox01, Uninit);
-
-    #[repr(C)] struct Struct();
-    assert::is_maybe_transmutable::<ImplicitlyPadded, ExplicitlyPadded>();
-    assert::is_maybe_transmutable::<ExplicitlyPadded, ImplicitlyPadded>();
-}
-
-fn len_2() {
-    #[repr(C)] struct ImplicitlyPadded([align_2; 2], Ox01);
-    #[repr(C)] struct ExplicitlyPadded(Ox00, Uninit, Ox00, Uninit, Ox01, Uninit);
-
-    #[repr(C)] struct Struct();
-    assert::is_maybe_transmutable::<ImplicitlyPadded, ExplicitlyPadded>();
-    assert::is_maybe_transmutable::<ExplicitlyPadded, ImplicitlyPadded>();
-}