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, 21 insertions, 0 deletions

diff --git a/tests/ui/include-macros/same-file-in-two-crates.rs b/tests/ui/include-macros/same-file-in-two-crates.rs
new file mode 100644
index 00000000000..f49efa2cf8a
--- /dev/null
+++ b/tests/ui/include-macros/same-file-in-two-crates.rs
@@ -0,0 +1,21 @@
+// This test makes sure that the compiler can handle the same source file to be
+// part of the local crate *and* an upstream crate. This can happen, for example,
+// when there is some auto-generated code that is part of both a library and an
+// accompanying integration test.
+//
+// The test uses include!() to include a source file that is also part of
+// an upstream crate.
+//
+// This is a regression test for https://github.com/rust-lang/rust/issues/85955.
+
+// check-pass
+// compile-flags: --crate-type=rlib
+// aux-build:same-file-in-two-crates-aux.rs
+extern crate same_file_in_two_crates_aux;
+
+pub fn foo() -> u32 {
+    same_file_in_two_crates_aux::some_function() +
+    some_function()
+}
+
+include!("./auxiliary/same-file-in-two-crates-aux.rs");