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, 25 insertions, 0 deletions

diff --git a/tests/ui/errors/issue-99572-impl-trait-on-pointer.rs b/tests/ui/errors/issue-99572-impl-trait-on-pointer.rs
new file mode 100644
index 00000000000..272c6bd3fb7
--- /dev/null
+++ b/tests/ui/errors/issue-99572-impl-trait-on-pointer.rs
@@ -0,0 +1,25 @@
+// Emit additional suggestion to correct the trait implementation
+// on a pointer
+use std::{fmt, marker};
+
+struct LocalType;
+
+impl fmt::Display for *mut LocalType {
+//~^ ERROR only traits defined in the current crate can be implemented for arbitrary types
+//~| NOTE impl doesn't use only types from inside the current crate
+//~| NOTE `*mut LocalType` is not defined in the current crate because raw pointers are always foreign
+//~| NOTE define and implement a trait or new type instead
+//~| HELP consider introducing a new wrapper type
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "This not compile")
+    }
+}
+
+impl<T> marker::Copy for *mut T {
+//~^ ERROR only traits defined in the current crate can be implemented for arbitrary types
+//~| NOTE impl doesn't use only types from inside the current crate
+//~| NOTE `*mut T` is not defined in the current crate because raw pointers are always foreign
+//~| NOTE define and implement a trait or new type instead
+}
+
+fn main() {}