1 files changed, 55 insertions, 0 deletions
diff --git a/test/std/experimental/filesystem/class.path/path.member/path.modifiers/make_preferred.pass.cpp b/test/std/experimental/filesystem/class.path/path.member/path.modifiers/make_preferred.pass.cpp
new file mode 100644
index 000000000000..559538cf0ec4
--- /dev/null
+++ b/test/std/experimental/filesystem/class.path/path.member/path.modifiers/make_preferred.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03
+
+// <experimental/filesystem>
+
+// class path
+
+// path& make_preferred()
+
+#include <experimental/filesystem>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.hpp"
+#include "filesystem_test_helper.hpp"
+
+namespace fs = std::experimental::filesystem;
+
+struct MakePreferredTestcase {
+  const char* value;
+};
+
+const MakePreferredTestcase TestCases[] =
+  {
+      {""}
+    , {"hello_world"}
+    , {"/"}
+    , {"/foo/bar/baz/"}
+    , {"\\"}
+    , {"\\foo\\bar\\baz\\"}
+    , {"\\foo\\/bar\\/baz\\"}
+  };
+
+int main()
+{
+  // This operation is an identity operation on linux.
+  using namespace fs;
+  for (auto const & TC : TestCases) {
+    path p(TC.value);
+    assert(p == TC.value);
+    path& Ref = (p.make_preferred());
+    assert(p.native() == TC.value);
+    assert(&Ref == &p);
+  }
+}