91     assert(std::format(L"{:*^3}", L" ") == L"* *");  in test_wchar_t()
92     assert(std::format(L"{:*^3}", L"~") == L"*~*");  in test_wchar_t()
95     assert(std::format(L"{:*^3}", L"\u00a1") == L"*\u00a1*"); // INVERTED EXCLAMATION MARK  in test_wchar_t()
96     assert(std::format(L"{:*^3}", L"\u07ff") == L"*\u07ff*"); // NKO TAMAN SIGN  in test_wchar_t()
99     assert(std::format(L"{:*^3}", L"\u0800") == L"*\u0800*"); // SAMARITAN LETTER ALAF  in test_wchar_t()
100     assert(std::format(L"{:*^3}", L"\ufffd") == L"*\ufffd*"); // REPLACEMENT CHARACTER  in test_wchar_t()
103     assert(std::format(L"{:*^3}", L"\u1100") == L"*\u1100*"); // HANGUL CHOSEONG KIYEOK  in test_wchar_t()
104     assert(std::format(L"{:*^3}", L"\u115f") == L"*\u115f*"); // HANGUL CHOSEONG FILLER  in test_wchar_t()
106     assert(std::format(L"{:*^3}", L"\u2329") == L"*\u2329*"); // LEFT-POINTING ANGLE BRACKET  in test_wchar_t()
107     assert(std::format(L"{:*^3}", L"\u232a") == L"*\u232a*"); // RIGHT-POINTING ANGLE BRACKET  in test_wchar_t()
109     assert(std::format(L"{:*^3}", L"\u2e80") == L"*\u2e80*"); // CJK RADICAL REPEAT  in test_wchar_t()
110     assert(std::format(L"{:*^3}", L"\u303e") == L"*\u303e*"); // IDEOGRAPHIC VARIATION INDICATOR  in test_wchar_t()
112     assert(std::format(L"{:*^3}", L"\u3040") == L"*\u3040*"); // U+3041 HIRAGANA LETTER SMALL A  in test_wchar_t()
113     assert(std::format(L"{:*^3}", L"\ua4cf") == L"*\ua4cf*"); // U+A4D0 LISU LETTER BA  in test_wchar_t()
115     assert(std::format(L"{:*^3}", L"\uac00") == L"*\uac00*"); // <Hangul Syllable, First>  in test_wchar_t()
116     assert(std::format(L"{:*^3}", L"\ud7a3") == L"*\ud7a3*"); // Hangul Syllable Hih  in test_wchar_t()
118     assert(std::format(L"{:*^3}", L"\uf900") == L"*\uf900*"); // CJK COMPATIBILITY IDEOGRAPH-F900  in test_wchar_t()
119     assert(std::format(L"{:*^3}", L"\ufaff") == L"*\ufaff*"); // U+FB00 LATIN SMALL LIGATURE FF  in test_wchar_t()
121 …  assert(std::format(L"{:*^3}", L"\ufe10") == L"*\ufe10*"); // PRESENTATION FORM FOR VERTICAL COMMA  in test_wchar_t()
122 …assert(std::format(L"{:*^3}", L"\ufe19") == L"*\ufe19*"); // PRESENTATION FORM FOR VERTICAL HORIZO…  in test_wchar_t()
124 …assert(std::format(L"{:*^3}", L"\ufe30") == L"*\ufe30*"); // PRESENTATION FORM FOR VERTICAL TWO DO…  in test_wchar_t()
125 …  assert(std::format(L"{:*^3}", L"\ufe6f") == L"*\ufe6f*"); // U+FE70 ARABIC FATHATAN ISOLATED FORM  in test_wchar_t()
127     assert(std::format(L"{:*^3}", L"\uff00") == L"*\uff00*"); // U+FF01 FULLWIDTH EXCLAMATION MARK  in test_wchar_t()
128     assert(std::format(L"{:*^3}", L"\uff60") == L"*\uff60*"); // FULLWIDTH RIGHT WHITE PARENTHESIS  in test_wchar_t()
130     assert(std::format(L"{:*^3}", L"\uffe0") == L"*\uffe0*"); // FULLWIDTH CENT SIGN  in test_wchar_t()
131     assert(std::format(L"{:*^3}", L"\uffe6") == L"*\uffe6*"); // FULLWIDTH WON SIGN  in test_wchar_t()
134     assert(std::format(L"{:*^3}", L"\U00010000") == L"*\U00010000*"); // LINEAR B SYLLABLE B008 A  in test_wchar_t()
135     assert(std::format(L"{:*^3}", L"\U0010FFFF") == L"*\U0010FFFF*"); // Undefined Character  in test_wchar_t()
138     assert(std::format(L"{:*^3}", L"\U0001f300") == L"*\U0001f300*"); // CYCLONE  in test_wchar_t()
139     assert(std::format(L"{:*^3}", L"\U0001f64f") == L"*\U0001f64f*"); // PERSON WITH FOLDED HANDS  in test_wchar_t()
140 …assert(std::format(L"{:*^3}", L"\U0001f900") == L"*\U0001f900*"); // CIRCLED CROSS FORMEE WITH FOU…  in test_wchar_t()
141     assert(std::format(L"{:*^3}", L"\U0001f9ff") == L"*\U0001f9ff*"); // NAZAR AMULET  in test_wchar_t()
142 …assert(std::format(L"{:*^3}", L"\U00020000") == L"*\U00020000*"); // <CJK Ideograph Extension B, F…  in test_wchar_t()
143     assert(std::format(L"{:*^3}", L"\U0002fffd") == L"*\U0002fffd*"); // Undefined Character  in test_wchar_t()
144 …assert(std::format(L"{:*^3}", L"\U00030000") == L"*\U00030000*"); // <CJK Ideograph Extension G, F…  in test_wchar_t()
145     assert(std::format(L"{:*^3}", L"\U0003fffd") == L"*\U0003fffd*"); // Undefined Character  in test_wchar_t()