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, 50 insertions, 0 deletions

diff --git a/tests/ui/alloc-error/alloc-error-handler-bad-signature-2.stderr b/tests/ui/alloc-error/alloc-error-handler-bad-signature-2.stderr
new file mode 100644
index 00000000000..7d23c2fc05a
--- /dev/null
+++ b/tests/ui/alloc-error/alloc-error-handler-bad-signature-2.stderr
@@ -0,0 +1,50 @@
+error[E0308]: mismatched types
+  --> $DIR/alloc-error-handler-bad-signature-2.rs:10:1
+   |
+LL |    #[alloc_error_handler]
+   |    ---------------------- in this procedural macro expansion
+LL | // fn oom(
+LL | ||     info: Layout,
+LL | || ) {
+   | ||_- arguments to this function are incorrect
+LL | |      loop {}
+LL | |  }
+   | |__^ expected struct `Layout`, found struct `core::alloc::Layout`
+   |
+   = note: struct `core::alloc::Layout` and struct `Layout` have similar names, but are actually distinct types
+note: struct `core::alloc::Layout` is defined in crate `core`
+  --> $SRC_DIR/core/src/alloc/layout.rs:LL:COL
+note: struct `Layout` is defined in the current crate
+  --> $DIR/alloc-error-handler-bad-signature-2.rs:7:1
+   |
+LL | struct Layout;
+   | ^^^^^^^^^^^^^
+note: function defined here
+  --> $DIR/alloc-error-handler-bad-signature-2.rs:10:4
+   |
+LL | fn oom(
+   |    ^^^
+LL |     info: Layout,
+   |     ------------
+   = note: this error originates in the attribute macro `alloc_error_handler` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0308]: mismatched types
+  --> $DIR/alloc-error-handler-bad-signature-2.rs:10:1
+   |
+LL |    #[alloc_error_handler]
+   |    ---------------------- in this procedural macro expansion
+LL | // fn oom(
+LL | ||     info: Layout,
+LL | || ) {
+   | ||_^ expected `!`, found `()`
+LL | |      loop {}
+LL | |  }
+   | |__- expected `!` because of return type
+   |
+   = note:   expected type `!`
+           found unit type `()`
+   = note: this error originates in the attribute macro `alloc_error_handler` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.