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, 61 insertions, 0 deletions

diff --git a/tests/ui/macros/macro-backtrace-invalid-internals.rs b/tests/ui/macros/macro-backtrace-invalid-internals.rs
new file mode 100644
index 00000000000..9501e7cd07c
--- /dev/null
+++ b/tests/ui/macros/macro-backtrace-invalid-internals.rs
@@ -0,0 +1,61 @@
+// Macros in statement vs expression position handle backtraces differently.
+
+macro_rules! fake_method_stmt {
+     () => {
+          1.fake() //~ ERROR no method
+     }
+}
+
+macro_rules! fake_field_stmt {
+     () => {
+          1.fake //~ ERROR doesn't have fields
+     }
+}
+
+macro_rules! fake_anon_field_stmt {
+     () => {
+          (1).0 //~ ERROR doesn't have fields
+     }
+}
+
+macro_rules! fake_method_expr {
+     () => {
+          1.fake() //~ ERROR no method
+     }
+}
+
+macro_rules! fake_field_expr {
+     () => {
+          1.fake //~ ERROR doesn't have fields
+     }
+}
+
+macro_rules! fake_anon_field_expr {
+     () => {
+          (1).0 //~ ERROR doesn't have fields
+     }
+}
+
+macro_rules! real_method_stmt {
+     () => {
+          2.0.neg() //~ ERROR can't call method `neg` on ambiguous numeric type `{float}`
+     }
+}
+
+macro_rules! real_method_expr {
+     () => {
+          2.0.neg() //~ ERROR can't call method `neg` on ambiguous numeric type `{float}`
+     }
+}
+
+fn main() {
+    fake_method_stmt!();
+    fake_field_stmt!();
+    fake_anon_field_stmt!();
+    real_method_stmt!();
+
+    let _ = fake_method_expr!();
+    let _ = fake_field_expr!();
+    let _ = fake_anon_field_expr!();
+    let _ = real_method_expr!();
+}