utf-8 for test cpp

Author: mutouyun

test/test_platform.cpp

@@ -11,8 +11,8 @@
 #include "libipc/platform/to_tchar.h"
 
 TEST(Platform, to_tchar) {
-    char    const *utf8 =  "hello world, 低挫�こんにちは";
-    wchar_t const *wstr = L"hello world, 低挫�こんにちは";
+    char    const *utf8 =  "hello world, 你好，こんにちは";
+    wchar_t const *wstr = L"hello world, 你好，こんにちは";
     {
         ipc::string str = ipc::detail::to_tchar<char>(utf8);
         EXPECT_STREQ(str.c_str(), utf8);