Move <CStr as Debug> test to coretests

Author: tamird

library/alloctests/tests/c_str2.rs

@@ -33,12 +33,6 @@ fn build_with_zero2() {
     assert!(CString::new(vec![0]).is_err());
 }
 
-#[test]
-fn formatted() {
-    let s = CString::new(&b"abc\x01\x02\n\xE2\x80\xA6\xFF"[..]).unwrap();
-    assert_eq!(format!("{s:?}"), r#""abc\x01\x02\n\xe2\x80\xa6\xff""#);
-}
-
 #[test]
 fn borrowed() {
     unsafe {

library/coretests/tests/ffi/cstr.rs

@@ -13,3 +13,9 @@ fn compares_as_u8s() {
     assert_eq!(Ord::cmp(a, b), Ord::cmp(a_bytes, b_bytes));
     assert_eq!(PartialOrd::partial_cmp(a, b), PartialOrd::partial_cmp(a_bytes, b_bytes));
 }
+
+#[test]
+fn debug() {
+    let s = c"abc\x01\x02\n\xE2\x80\xA6\xFF";
+    assert_eq!(format!("{s:?}"), r#""abc\x01\x02\n\xe2\x80\xa6\xff""#);
+}