TestUtf8LimitStrSize fails on windows build

[hbivens]

Test project C:/Projects/code/SpecUtils/out/build/x64-Debug
    Start 8: TestUtf8LimitStrSize
1/1 Test #8: TestUtf8LimitStrSize .............***Failed    0.18 sec
[doctest] doctest version is "2.4.11"
[doctest] run with "--help" for options
===============================================================================
C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(41):
TEST CASE:  Test utf8 limit str size

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(85): ERROR: CHECK_EQ( teststr, "" ) is NOT correct!
  values: CHECK_EQ( â,  )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(89): ERROR: CHECK_EQ( teststr, u8"ⓧ" ) is NOT correct!
  values: CHECK_EQ( â, ⓧ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(97): ERROR: CHECK_EQ( teststr, u8"ⓧ" ) is NOT correct!
  values: CHECK_EQ( â, ⓧ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(101): ERROR: CHECK_EQ( teststr, u8"ⓧⓧ" ) is NOT correct!
  values: CHECK_EQ( â“, ⓧⓧ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(105): ERROR: CHECK_EQ( teststr, u8"ⓧⓧ" ) is NOT correct!
  values: CHECK_EQ( â“, ⓧⓧ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(109): ERROR: CHECK_EQ( teststr, u8"ⓧⓧa" ) is NOT correct!
  values: CHECK_EQ( ⓧ, ⓧⓧa )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(114): ERROR: CHECK_EQ( teststr, u8"aaⓧ" ) is NOT correct!
  values: CHECK_EQ( aaâ, aaⓧ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(118): ERROR: CHECK_EQ( teststr, u8"aaⓧ" ) is NOT correct!
  values: CHECK_EQ( aaâ, aaⓧ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(122): ERROR: CHECK_EQ( teststr, u8"aaⓧ" ) is NOT correct!
  values: CHECK_EQ( aaâ“, aaⓧ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(127): ERROR: CHECK_EQ( teststr, u8"aõ" ) is NOT correct!
  values: CHECK_EQ( aÃ, aõ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(131): ERROR: CHECK_EQ( teststr, u8"õa" ) is NOT correct!
  values: CHECK_EQ( Ã, õa )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(135): ERROR: CHECK_EQ( teststr, u8"õ" ) is NOT correct!
  values: CHECK_EQ( Ã, õ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(139): ERROR: CHECK_EQ( teststr, u8"õ" ) is NOT correct!
  values: CHECK_EQ( Ã, õ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(147): ERROR: CHECK_EQ( teststr, u8"÷" ) is NOT correct!
  values: CHECK_EQ( Ã, ÷ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(151): ERROR: CHECK_EQ( teststr, u8"÷" ) is NOT correct!
  values: CHECK_EQ( Ã, ÷ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(155): ERROR: CHECK_EQ( teststr, u8"÷õ" ) is NOT correct!
  values: CHECK_EQ( ÷, ÷õ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(159): ERROR: CHECK_EQ( teststr, u8"÷õ" ) is NOT correct!
  values: CHECK_EQ( ÷, ÷õ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(163): ERROR: CHECK_EQ( teststr, u8"÷aõ" ) is NOT correct!
  values: CHECK_EQ( ÷a, ÷aõ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(167): ERROR: CHECK_EQ( teststr, u8"÷aõ" ) is NOT correct!
  values: CHECK_EQ( ÷a, ÷aõ )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(171): ERROR: CHECK_EQ( teststr, u8"÷a" ) is NOT correct!
  values: CHECK_EQ( Ã, ÷a )

C:\Projects\code\SpecUtils\unit_tests\test_utf8_limit_str_size.cpp(175): ERROR: CHECK_EQ( teststr, u8"÷" ) is NOT correct!
  values: CHECK_EQ( Ã, ÷ )

[wcjohns]

I thought commit 3c3bf8c should have fixed this - for me the tests failed when Windows didn't interpret the source file as UTF-8. I added a BOM to the file, and then it would pass. It currently seems to pass on GitHub Actions for Windows, and on my machine - is it possible that your source code editor is changing the text encoding?
Or is there a better way to force UTF-8 encoding of the source file?