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, 81 deletions

diff --git a/src/test/ui/array-slice-vec/slice.rs b/src/test/ui/array-slice-vec/slice.rs
deleted file mode 100644
index a514e202773..00000000000
--- a/src/test/ui/array-slice-vec/slice.rs
+++ /dev/null
@@ -1,81 +0,0 @@
-// run-pass
-#![allow(unused_variables)]
-
-// Test slicing sugar.
-
-extern crate core;
-use core::ops::{Index, IndexMut, Range, RangeTo, RangeFrom, RangeFull};
-
-static mut COUNT: usize = 0;
-
-struct Foo;
-
-impl Index<Range<Foo>> for Foo {
-    type Output = Foo;
-    fn index(&self, index: Range<Foo>) -> &Foo {
-        unsafe { COUNT += 1; }
-        self
-    }
-}
-impl Index<RangeTo<Foo>> for Foo {
-    type Output = Foo;
-    fn index(&self, index: RangeTo<Foo>) -> &Foo {
-        unsafe { COUNT += 1; }
-        self
-    }
-}
-impl Index<RangeFrom<Foo>> for Foo {
-    type Output = Foo;
-    fn index(&self, index: RangeFrom<Foo>) -> &Foo {
-        unsafe { COUNT += 1; }
-        self
-    }
-}
-impl Index<RangeFull> for Foo {
-    type Output = Foo;
-    fn index(&self, _index: RangeFull) -> &Foo {
-        unsafe { COUNT += 1; }
-        self
-    }
-}
-
-impl IndexMut<Range<Foo>> for Foo {
-    fn index_mut(&mut self, index: Range<Foo>) -> &mut Foo {
-        unsafe { COUNT += 1; }
-        self
-    }
-}
-impl IndexMut<RangeTo<Foo>> for Foo {
-    fn index_mut(&mut self, index: RangeTo<Foo>) -> &mut Foo {
-        unsafe { COUNT += 1; }
-        self
-    }
-}
-impl IndexMut<RangeFrom<Foo>> for Foo {
-    fn index_mut(&mut self, index: RangeFrom<Foo>) -> &mut Foo {
-        unsafe { COUNT += 1; }
-        self
-    }
-}
-impl IndexMut<RangeFull> for Foo {
-    fn index_mut(&mut self, _index: RangeFull) -> &mut Foo {
-        unsafe { COUNT += 1; }
-        self
-    }
-}
-
-
-fn main() {
-    let mut x = Foo;
-    let _ = &x[..];
-    let _ = &x[Foo..];
-    let _ = &x[..Foo];
-    let _ = &x[Foo..Foo];
-    let _ = &mut x[..];
-    let _ = &mut x[Foo..];
-    let _ = &mut x[..Foo];
-    let _ = &mut x[Foo..Foo];
-    unsafe {
-        assert_eq!(COUNT, 8);
-    }
-}