[libcxx] [test] Fix path.modifiers remove_filename and replace_filename for windows

[mstorsjo]

libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/replace_filename.pass.cpp

49–50

These two ifdefs can be merged; I'll do that locally before the next update or before pushing.

[curdeius]

LGTM. Don't forget to merge the ifdefs when landing.

libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/replace_filename.pass.cpp

15

Could you please update this synopsis extract to path& replace_filename( const path& replacement ); when you're here?

[• Quuxplusone]

LGTM.

[mstorsjo]

libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/replace_filename.pass.cpp

15

Sure, will do.

libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/remove_filename.pass.cpp

 };
 
 const RemoveFilenameTestcase TestCases[] =
   {
       {"", ""}
     , {"/", "/"}
     , {"//", "//"}
     , {"///", "///"}
+#ifdef _WIN32
+    , {"\\", "\\"}
+#else
     , {"\\", ""}
+#endif
     , {".", ""}
     , {"..", ""}
     , {"/foo", "/"}
     , {"foo/bar", "foo/"}
     , {"foo/", "foo/"}
+#ifdef _WIN32
+    , {"//foo", "//foo"}
+#else
     , {"//foo", "//"}
+#endif
     , {"//foo/", "//foo/"}
     , {"//foo///", "//foo///"}
     , {"///foo", "///"}
     , {"///foo/", "///foo/"}
     , {"/foo/", "/foo/"}
     , {"/foo/.", "/foo/"}
     , {"/foo/..", "/foo/"}
     , {"/foo/////", "/foo/////"}
+#ifdef _WIN32
+    , {"/foo\\\\", "/foo\\\\"}
+#else
     , {"/foo\\\\", "/"}
+#endif
     , {"/foo//\\/", "/foo//\\/"}
     , {"///foo", "///"}
     , {"file.txt", ""}
     , {"bar/../baz/./file.txt", "bar/../baz/./"}
   };
 
 int main(int, char**)
 {

libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/replace_filename.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03
 
 // <filesystem>
 
 // class path
 
-// path& replace_filename()
+// path& replace_filename( const path& replacement );
 
 #include "filesystem_include.h"
 #include <type_traits>
 #include <cassert>
 
 #include "test_macros.h"
 #include "test_iterators.h"
 #include "count_new.h"
 #include "filesystem_test_helper.h"
 
 struct ReplaceFilenameTestcase {
   const char* value;
   const char* expect;
   const char* filename;
 };
 
 const ReplaceFilenameTestcase TestCases[] =
   {
       {"/foo", "/bar", "bar"}
     , {"/foo", "/", ""}
     , {"foo", "bar", "bar"}
     , {"/", "/bar", "bar"}
+#ifdef _WIN32
+    , {"\\", "\\bar", "bar"}
+#else
     , {"\\", "bar", "bar"}
+#endif
     , {"///", "///bar", "bar"}
+#ifdef _WIN32
+    , {"\\\\", "\\\\bar", "bar"}
+    , {"\\/\\", "\\/\\bar", "bar"}
+#else
     , {"\\\\", "bar", "bar"}
     , {"\\/\\", "\\/bar", "bar"}
+#endif
     , {".", "bar", "bar"}
     , {"..", "bar", "bar"}
     , {"/foo\\baz/bong/", "/foo\\baz/bong/bar", "bar"}
     , {"/foo\\baz/bong", "/foo\\baz/bar", "bar"}
   };
 
 int main(int, char**)
 {