diff --git a/libcxx/test/std/utilities/format/format.functions/format_tests.h b/libcxx/test/std/utilities/format/format.functions/format_tests.h
--- a/libcxx/test/std/utilities/format/format.functions/format_tests.h
+++ b/libcxx/test/std/utilities/format/format.functions/format_tests.h
@@ -11,6 +11,7 @@
 #include <format>
 
 #include "make_string.h"
+#include "test_macros.h"
 
 // In this file the following template types are used:
 // TestFunction must be callable as check(expected-result, string-to-format, args-to-format...)
@@ -227,7 +228,8 @@
 
 template <class CharT, class TestFunction>
 void format_test_string_unicode(TestFunction check) {
-#ifndef _LIBCPP_HAS_NO_UNICODE
+  (void)check;
+#ifndef TEST_HAS_NO_UNICODE
   // ß requires one column
   check(STR("aßc"), STR("{}"), STR("aßc"));
 
@@ -259,9 +261,7 @@
   check(STR("a\u1110c---"), STR("{:-<7}"), STR("a\u1110c"));
   check(STR("-a\u1110c--"), STR("{:-^7}"), STR("a\u1110c"));
   check(STR("---a\u1110c"), STR("{:->7}"), STR("a\u1110c"));
-#else
-  (void)check;
-#endif
+#endif // TEST_HAS_NO_UNICODE
 }
 
 template <class CharT, class TestFunction, class ExceptionTest>
diff --git a/libcxx/test/std/utilities/format/format.functions/locale-specific_form.pass.cpp b/libcxx/test/std/utilities/format/format.functions/locale-specific_form.pass.cpp
--- a/libcxx/test/std/utilities/format/format.functions/locale-specific_form.pass.cpp
+++ b/libcxx/test/std/utilities/format/format.functions/locale-specific_form.pass.cpp
@@ -227,7 +227,7 @@
   }
 }
 
-#ifndef _LIBCPP_HAS_NO_UNICODE
+#ifndef TEST_HAS_NO_UNICODE
 template <class CharT>
 struct numpunct_unicode;
 
@@ -244,7 +244,7 @@
   string_type do_falsename() const override { return L"ungültig"; }
 };
 #endif
-#endif // _LIBCPP_HAS_NO_UNICODE
+#endif // TEST_HAS_NO_UNICODE
 
 template <class CharT>
 void test_bool() {
@@ -265,7 +265,7 @@
   test(STR("true"), std::locale(LOCALE_en_US_UTF_8), STR("{:L}"), true);
   test(STR("false"), std::locale(LOCALE_en_US_UTF_8), STR("{:L}"), false);
 
-#ifndef _LIBCPP_HAS_NO_UNICODE
+#ifndef TEST_HAS_NO_UNICODE
   std::locale loc_unicode =
       std::locale(std::locale(), new numpunct_unicode<CharT>());
 
@@ -276,7 +276,7 @@
   test(STR("gültig!!!"), loc_unicode, STR("{:!<9L}"), true);
   test(STR("_gültig__"), loc_unicode, STR("{:_^9L}"), true);
   test(STR("   gültig"), loc_unicode, STR("{:>9L}"), true);
-#endif
+#endif // TEST_HAS_NO_UNICODE
 }
 
 template <class CharT>
diff --git a/libcxx/test/support/msvc_stdlib_force_include.h b/libcxx/test/support/msvc_stdlib_force_include.h
--- a/libcxx/test/support/msvc_stdlib_force_include.h
+++ b/libcxx/test/support/msvc_stdlib_force_include.h
@@ -104,8 +104,4 @@
     __pragma(warning(pop))
 #endif // __clang__
 
-#if defined(_MSVC_EXECUTION_CHARACTER_SET) && _MSVC_EXECUTION_CHARACTER_SET != 65001
-#define _LIBCPP_HAS_NO_UNICODE 1
-#endif
-
 #endif // SUPPORT_MSVC_STDLIB_FORCE_INCLUDE_H
diff --git a/libcxx/test/support/test_macros.h b/libcxx/test/support/test_macros.h
--- a/libcxx/test/support/test_macros.h
+++ b/libcxx/test/support/test_macros.h
@@ -361,6 +361,12 @@
 #   define TEST_HAS_NO_WIDE_CHARACTERS
 #endif
 
+#if defined(_LIBCPP_HAS_NO_UNICODE)
+#   define TEST_HAS_NO_UNICODE
+#elif defined(_MSVC_EXECUTION_CHARACTER_SET) && _MSVC_EXECUTION_CHARACTER_SET != 65001
+#   define TEST_HAS_NO_UNICODE
+#endif
+
 #if defined(__GNUC__)
 #pragma GCC diagnostic pop
 #endif