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, 26 insertions, 0 deletions

diff --git a/tests/ui/consts/const-eval/const-eval-overflow-4b.rs b/tests/ui/consts/const-eval/const-eval-overflow-4b.rs
new file mode 100644
index 00000000000..ce9c980de0d
--- /dev/null
+++ b/tests/ui/consts/const-eval/const-eval-overflow-4b.rs
@@ -0,0 +1,26 @@
+// Evaluation of constants in array-elem count goes through different
+// compiler control-flow paths.
+//
+// This test is checking the count in an array type.
+
+#![allow(unused_imports)]
+
+const A_I8_T
+    : [u32; (i8::MAX as i8 + 1u8) as usize]
+    //~^ ERROR mismatched types
+    //~| expected `i8`, found `u8`
+    //~| ERROR cannot add `u8` to `i8`
+    = [0; (i8::MAX as usize) + 1];
+
+
+const A_CHAR_USIZE
+    : [u32; 5u8 as char as usize]
+    = [0; 5];
+
+
+const A_BAD_CHAR_USIZE
+    : [u32; 5i8 as char as usize]
+    //~^ ERROR only `u8` can be cast as `char`, not `i8`
+    = [0; 5];
+
+fn main() {}