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, 15 insertions, 0 deletions

diff --git a/tests/ui/limits/huge-array.rs b/tests/ui/limits/huge-array.rs
new file mode 100644
index 00000000000..3070801f865
--- /dev/null
+++ b/tests/ui/limits/huge-array.rs
@@ -0,0 +1,15 @@
+// FIXME https://github.com/rust-lang/rust/issues/59774
+
+// build-fail
+// normalize-stderr-test "thread.*panicked.*Metadata module not compiled.*\n" -> ""
+// normalize-stderr-test "note:.*RUST_BACKTRACE=1.*\n" -> ""
+
+fn generic<T: Copy>(t: T) {
+    let s: [T; 1518600000] = [t; 1518600000];
+    //~^ ERROR values of the type `[[u8; 1518599999]; 1518600000]` are too big
+}
+
+fn main() {
+    let x: [u8; 1518599999] = [0; 1518599999];
+    generic::<[u8; 1518599999]>(x);
+}