From b85aa76bd2d93facfeaf184107e811c2dd8da19a Mon Sep 17 00:00:00 2001
From: yhirose <yuji.hirose.bug@gmail.com>
Date: Fri, 16 Jan 2026 11:10:34 -0500
Subject: [PATCH] Fix #2321, #2322, #2326

---
 test/test.cc | 45 +++++++++++++++++++++++++++------------------
 1 file changed, 27 insertions(+), 18 deletions(-)

diff --git a/test/test.cc b/test/test.cc
index d364019..5591a12 100644
--- a/test/test.cc
+++ b/test/test.cc
@@ -27,6 +27,15 @@
 #include <type_traits>
 #include <vector>
 
+#if __cplusplus >= 202002L
+inline std::string u8_to_string(const char8_t *s) {
+  return std::string(reinterpret_cast<const char *>(s));
+}
+#define U8(x) u8_to_string(u8##x)
+#else
+#define U8(x) u8##x
+#endif
+
 #define SERVER_CERT_FILE "./cert.pem"
 #define SERVER_CERT2_FILE "./cert2.pem"
 #define SERVER_PRIVATE_KEY_FILE "./key.pem"
@@ -372,7 +381,7 @@ TEST(DecodePathTest, PercentCharacter) {
   EXPECT_EQ(
       decode_path_component(
           R"(descrip=Gastos%20%C3%A1%C3%A9%C3%AD%C3%B3%C3%BA%C3%B1%C3%91%206)"),
-      u8"descrip=Gastos áéíóúñÑ 6");
+      U8("descrip=Gastos áéíóúñÑ 6"));
 }
 
 TEST(DecodePathTest, PercentCharacterNUL) {
@@ -430,9 +439,9 @@ TEST(ClientQueryOrder, PreserveOrder) {
 }
 
 TEST(EncodeQueryParamTest, TestUTF8Characters) {
-  string chineseCharacters = u8"中国語";
-  string russianCharacters = u8"дом";
-  string brazilianCharacters = u8"óculos";
+  string chineseCharacters = U8("中国語");
+  string russianCharacters = U8("дом");
+  string brazilianCharacters = U8("óculos");
 
   EXPECT_EQ(httplib::encode_uri_component(chineseCharacters),
             "%E4%B8%AD%E5%9B%BD%E8%AA%9E");
@@ -457,9 +466,9 @@ TEST(EncodeUriComponentTest, ParseReservedCharactersTest) {
 }
 
 TEST(EncodeUriComponentTest, TestUTF8Characters) {
-  string chineseCharacters = u8"中国語";
-  string russianCharacters = u8"дом";
-  string brazilianCharacters = u8"óculos";
+  string chineseCharacters = U8("中国語");
+  string russianCharacters = U8("дом");
+  string brazilianCharacters = U8("óculos");
 
   EXPECT_EQ(httplib::encode_uri_component(chineseCharacters),
             "%E4%B8%AD%E5%9B%BD%E8%AA%9E");
@@ -491,9 +500,9 @@ TEST(EncodeUriTest, ParseReservedCharactersTest) {
 }
 
 TEST(EncodeUriTest, TestUTF8Characters) {
-  string chineseCharacters = u8"中国語";
-  string russianCharacters = u8"дом";
-  string brazilianCharacters = u8"óculos";
+  string chineseCharacters = U8("中国語");
+  string russianCharacters = U8("дом");
+  string brazilianCharacters = U8("óculos");
 
   EXPECT_EQ(httplib::encode_uri(chineseCharacters),
             "%E4%B8%AD%E5%9B%BD%E8%AA%9E");
@@ -538,9 +547,9 @@ TEST(DecodeUriComponentTest, TestUTF8Characters) {
   string encodedRussian = "%D0%B4%D0%BE%D0%BC";
   string encodedBrazilian = "%C3%B3culos";
 
-  EXPECT_EQ(httplib::decode_uri_component(encodedChinese), u8"中国語");
-  EXPECT_EQ(httplib::decode_uri_component(encodedRussian), u8"дом");
-  EXPECT_EQ(httplib::decode_uri_component(encodedBrazilian), u8"óculos");
+  EXPECT_EQ(httplib::decode_uri_component(encodedChinese), U8("中国語"));
+  EXPECT_EQ(httplib::decode_uri_component(encodedRussian), U8("дом"));
+  EXPECT_EQ(httplib::decode_uri_component(encodedBrazilian), U8("óculos"));
 }
 
 TEST(DecodeUriComponentTest, TestPathComponentDecoding) {
@@ -567,9 +576,9 @@ TEST(DecodeUriTest, TestUTF8Characters) {
   string encodedRussian = "%D0%B4%D0%BE%D0%BC";
   string encodedBrazilian = "%C3%B3culos";
 
-  EXPECT_EQ(httplib::decode_uri(encodedChinese), u8"中国語");
-  EXPECT_EQ(httplib::decode_uri(encodedRussian), u8"дом");
-  EXPECT_EQ(httplib::decode_uri(encodedBrazilian), u8"óculos");
+  EXPECT_EQ(httplib::decode_uri(encodedChinese), U8("中国語"));
+  EXPECT_EQ(httplib::decode_uri(encodedRussian), U8("дом"));
+  EXPECT_EQ(httplib::decode_uri(encodedBrazilian), U8("óculos"));
 }
 
 TEST(DecodeUriTest, TestCompleteUri) {
@@ -7422,10 +7431,10 @@ TEST(MountTest, MultibytesPathName) {
 
   Client cli("localhost", PORT);
 
-  auto res = cli.Get(u8"/日本語Dir/日本語File.txt");
+  auto res = cli.Get(U8("/日本語Dir/日本語File.txt"));
   ASSERT_TRUE(res);
   EXPECT_EQ(StatusCode::OK_200, res->status);
-  EXPECT_EQ(u8"日本語コンテンツ", res->body);
+  EXPECT_EQ(U8("日本語コンテンツ"), res->body);
 }
 
 TEST(KeepAliveTest, ReadTimeout) {