HyukjinKwon commented on code in PR #48722:
URL: https://github.com/apache/arrow/pull/48722#discussion_r2663389504
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cpp/src/arrow/io/file_test.cc:
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@@ -115,7 +115,25 @@ TEST_F(TestFileOutputStream,
FileNameWideCharConversionRangeException) {
ASSERT_RAISES(Invalid, ReadableFile::Open(file_name));
}
-// TODO add a test with a valid utf-8 filename
+TEST_F(TestFileOutputStream, FileNameValidUtf8) {
+ // Test that file operations work with valid UTF-8 filenames.
+ // On Windows, PlatformFilename::FromString() converts UTF-8 strings to wide
strings.
+ // On Unix, filenames are treated as opaque byte strings.
+ std::string utf8_file_name = "test_file_한국어_😀.txt";
Review Comment:
`한국어` is "Korean" in Korean FYI .. :-)..
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