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, 0 insertions, 29 deletions

diff --git a/src/test/ui/expr-if-generic.rs b/src/test/ui/expr-if-generic.rs
deleted file mode 100644
index 32ed6d9bee0..00000000000
--- a/src/test/ui/expr-if-generic.rs
+++ /dev/null
@@ -1,29 +0,0 @@
-// run-pass
-
-fn test_generic<T, F>(expected: T, not_expected: T, eq: F) where
-    T: Clone,
-    F: FnOnce(T, T) -> bool,
-{
-    let actual: T = if true { expected.clone() } else { not_expected };
-    assert!(eq(expected, actual));
-}
-
-fn test_bool() {
-    fn compare_bool(b1: bool, b2: bool) -> bool { return b1 == b2; }
-    test_generic::<bool, _>(true, false, compare_bool);
-}
-
-#[derive(Clone)]
-struct Pair {
-    a: isize,
-    b: isize,
-}
-
-fn test_rec() {
-    fn compare_rec(t1: Pair, t2: Pair) -> bool {
-        t1.a == t2.a && t1.b == t2.b
-    }
-    test_generic::<Pair, _>(Pair{a: 1, b: 2}, Pair{a: 2, b: 3}, compare_rec);
-}
-
-pub fn main() { test_bool(); test_rec(); }