[libcxx-commits] [libcxx] [libc++][test] Refactor tests for rotate and rotate_copy (PR #126458)

[Louis Dionne via libcxx-commits]

================
@@ -74,7 +73,7 @@ constexpr void test(std::array<int, N> value, std::size_t middle, std::array<int
   }
 }
 
-template <class Iter, class OutIter, class Sent>
+template <class Iter, class OutIter, class Sent = Iter>
----------------
ldionne wrote:

```suggestion
template <class Iter, class OutIter, class Sent>
```

Let's specify it explicitly when we call this function from `test()` below, since we always use the default argument. Let's call it as 

```
test_iterators<Iter, OutIter, Iter>();
```

https://github.com/llvm/llvm-project/pull/126458