1 files changed, 69 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/27_io/filesystem/operations/proximate.cc b/libstdc++-v3/testsuite/27_io/filesystem/operations/proximate.cc
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+++ b/libstdc++-v3/testsuite/27_io/filesystem/operations/proximate.cc
@@ -0,0 +1,69 @@
+// Copyright (C) 2017 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++17 -lstdc++fs" }
+// { dg-do run { target c++17 } }
+// { dg-require-filesystem-ts "" }
+
+#include <filesystem>
+#include <testsuite_hooks.h>
+#include <testsuite_fs.h>
+
+using std::filesystem::proximate;
+using __gnu_test::compare_paths;
+
+void
+test01()
+{
+  compare_paths( proximate("/a/d", "/a/b/c"), "../../d" );
+  compare_paths( proximate("/a/b/c", "/a/d"), "../b/c" );
+  compare_paths( proximate("a/b/c", "a"), "b/c" );
+  compare_paths( proximate("a/b/c", "a/b/c/x/y"), "../.." );
+  compare_paths( proximate("a/b/c", "a/b/c"), "." );
+  compare_paths( proximate("a/b", "c/d"), "../../a/b" );
+}
+
+void
+test02()
+{
+  const std::error_code bad_ec = make_error_code(std::errc::invalid_argument);
+  std::error_code ec = bad_ec;
+  compare_paths( proximate("/a/d", "/a/b/c", ec), "../../d" );
+  VERIFY( !ec );
+  ec = bad_ec;
+  compare_paths( proximate("/a/b/c", "/a/d", ec), "../b/c" );
+  VERIFY( !ec );
+  ec = bad_ec;
+  compare_paths( proximate("a/b/c", "a", ec), "b/c" );
+  VERIFY( !ec );
+  ec = bad_ec;
+  compare_paths( proximate("a/b/c", "a/b/c/x/y", ec), "../.." );
+  VERIFY( !ec );
+  ec = bad_ec;
+  compare_paths( proximate("a/b/c", "a/b/c", ec), "." );
+  VERIFY( !ec );
+  ec = bad_ec;
+  compare_paths( proximate("a/b", "c/d", ec), "../../a/b" );
+  VERIFY( !ec );
+}
+
+int
+main()
+{
+  test01();
+  test02();
+}