[libc++][nfc] Add TEST_HAS_NO_UNICODE_CHARS.

This avoids using an libc++ internal macro in our tests.

Reviewed By: #libc, philnik, ldionne

Differential Revision: https://reviews.llvm.org/D118832

Author: mordante

libcxx/test/libcxx/utilities/format/format.string/format.string.std/std_format_spec_string.pass.cpp

@@ -342,7 +342,7 @@ constexpr bool test() {
 #ifndef _LIBCPP_HAS_NO_CHAR8_T
   test<char8_t>();
 #endif
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
+#ifndef TEST_HAS_NO_UNICODE_CHARS
   test<char16_t>();
   test<char32_t>();
 #endif

libcxx/test/libcxx/utilities/format/format.string/format.string.std/std_format_spec_string_non_unicode.pass.cpp

@@ -97,7 +97,7 @@ constexpr bool test() {
 #ifndef _LIBCPP_HAS_NO_CHAR8_T
   test<char8_t>();
 #endif
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
+#ifndef TEST_HAS_NO_UNICODE_CHARS
   test<char16_t>();
   test<char32_t>();
 #endif

libcxx/test/libcxx/utilities/format/format.string/format.string.std/std_format_spec_string_unicode.pass.cpp

@@ -260,7 +260,7 @@ constexpr bool test() {
 #ifndef _LIBCPP_HAS_NO_CHAR8_T
   test<char8_t>();
 #endif
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
+#ifndef TEST_HAS_NO_UNICODE_CHARS
   test<char16_t>();
   test<char32_t>();
 #endif

libcxx/test/std/atomics/atomics.types.generic/integral.pass.cpp

@@ -177,7 +177,7 @@ int main(int, char**)
 #if TEST_STD_VER > 17 && defined(__cpp_char8_t)
     test<std::atomic_char8_t, char8_t>();
 #endif
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
+#ifndef TEST_HAS_NO_UNICODE_CHARS
     test<std::atomic_char16_t, char16_t>();
     test<std::atomic_char32_t, char32_t>();
 #endif
@@ -205,7 +205,7 @@ int main(int, char**)
     test<volatile std::atomic_ulong, unsigned long>();
     test<volatile std::atomic_llong, long long>();
     test<volatile std::atomic_ullong, unsigned long long>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
+#ifndef TEST_HAS_NO_UNICODE_CHARS
     test<volatile std::atomic_char16_t, char16_t>();
     test<volatile std::atomic_char32_t, char32_t>();
 #endif

libcxx/test/std/atomics/atomics.types.generic/integral_typedefs.pass.cpp

@@ -60,7 +60,7 @@ int main(int, char**)
 #if TEST_STD_VER > 17 && defined(__cpp_char8_t)
     static_assert((std::is_same<std::atomic<char8_t>, std::atomic_char8_t>::value), "");
 #endif
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
+#ifndef TEST_HAS_NO_UNICODE_CHARS
     static_assert((std::is_same<std::atomic<char16_t>, std::atomic_char16_t>::value), "");
     static_assert((std::is_same<std::atomic<char32_t>, std::atomic_char32_t>::value), "");
 #endif

libcxx/test/std/language.support/cmp/cmp.concept/three_way_comparable.compile.pass.cpp

@@ -30,7 +30,7 @@ static_assert(std::three_way_comparable<wchar_t&>);
 #ifndef _LIBCPP_HAS_NO_CHAR8_T
 static_assert(std::three_way_comparable<char8_t const&>);
 #endif
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
+#ifndef TEST_HAS_NO_UNICODE_CHARS
 static_assert(std::three_way_comparable<char16_t volatile&>);
 static_assert(std::three_way_comparable<char32_t const volatile&>);
 #endif

libcxx/test/std/language.support/support.limits/limits/is_specialized.pass.cpp

@@ -49,7 +49,7 @@ int main(int, char**)
 #if TEST_STD_VER > 17 && defined(__cpp_char8_t)
     test<char8_t>();
 #endif
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
+#ifndef TEST_HAS_NO_UNICODE_CHARS
     test<char16_t>();
     test<char32_t>();
 #endif

libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/denorm_min.pass.cpp

@@ -36,7 +36,7 @@ int main(int, char**)
 #if TEST_STD_VER > 17 && defined(__cpp_char8_t)
     test<char8_t>(0);
 #endif
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
+#ifndef TEST_HAS_NO_UNICODE_CHARS
     test<char16_t>(0);
     test<char32_t>(0);
 #endif

libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/digits.pass.cpp

@@ -35,7 +35,7 @@ int main(int, char**)
 #if TEST_STD_VER > 17 && defined(__cpp_char8_t)
     test<char8_t, 8>();
 #endif
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
+#ifndef TEST_HAS_NO_UNICODE_CHARS
     test<char16_t, 16>();
     test<char32_t, 32>();
 #endif

libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/digits10.pass.cpp

@@ -39,7 +39,7 @@ int main(int, char**)
 #if TEST_STD_VER > 17 && defined(__cpp_char8_t)
     test<char8_t, 2>();
 #endif
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
+#ifndef TEST_HAS_NO_UNICODE_CHARS
     test<char16_t, 4>();
     test<char32_t, 9>();
 #endif