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, 46 insertions, 0 deletions

diff --git a/tests/ui/proc-macro/attributes-on-modules-fail.rs b/tests/ui/proc-macro/attributes-on-modules-fail.rs
new file mode 100644
index 00000000000..6c30e8f4f95
--- /dev/null
+++ b/tests/ui/proc-macro/attributes-on-modules-fail.rs
@@ -0,0 +1,46 @@
+// aux-build:test-macros.rs
+
+#[macro_use]
+extern crate test_macros;
+
+#[identity_attr]
+mod m {
+    pub struct X;
+
+    type A = Y; //~ ERROR cannot find type `Y` in this scope
+}
+
+struct Y;
+type A = X; //~ ERROR cannot find type `X` in this scope
+
+#[derive(Copy)] //~ ERROR `derive` may only be applied to `struct`s, `enum`s and `union`s
+mod n {}
+
+#[empty_attr]
+mod module; //~ ERROR non-inline modules in proc macro input are unstable
+
+#[empty_attr]
+mod outer {
+    mod inner; //~ ERROR non-inline modules in proc macro input are unstable
+
+    mod inner_inline {} // OK
+}
+
+#[derive(Empty)]
+struct S {
+    field: [u8; {
+        #[path = "outer/inner.rs"]
+        mod inner; //~ ERROR non-inline modules in proc macro input are unstable
+        mod inner_inline {} // OK
+        0
+    }]
+}
+
+#[identity_attr]
+fn f() {
+    #[path = "outer/inner.rs"]
+    mod inner; //~ ERROR non-inline modules in proc macro input are unstable
+    mod inner_inline {} // OK
+}
+
+fn main() {}