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/recursion/recursion.rs b/tests/ui/recursion/recursion.rs
new file mode 100644
index 00000000000..b3ba0ec3a2a
--- /dev/null
+++ b/tests/ui/recursion/recursion.rs
@@ -0,0 +1,25 @@
+// build-fail
+// compile-flags:-C overflow-checks=off
+// normalize-stderr-test: ".nll/" -> "/"
+
+enum Nil {NilValue}
+struct Cons<T> {head:isize, tail:T}
+trait Dot {fn dot(&self, other:Self) -> isize;}
+impl Dot for Nil {
+  fn dot(&self, _:Nil) -> isize {0}
+}
+impl<T:Dot> Dot for Cons<T> {
+  fn dot(&self, other:Cons<T>) -> isize {
+    self.head * other.head + self.tail.dot(other.tail)
+  }
+}
+fn test<T:Dot> (n:isize, i:isize, first:T, second:T) ->isize {
+  match n {    0 => {first.dot(second)}
+    _ => {test (n-1, i+1, Cons {head:2*i+1, tail:first}, Cons{head:i*i, tail:second})}
+    //~^ ERROR recursion limit
+  }
+}
+pub fn main() {
+  let n = test(1, 0, Nil::NilValue, Nil::NilValue);
+  println!("{}", n);
+}