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LibUnicode: Generate simple case folding mappings for titlecase

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Note we already generate the special case foldings for titlecase.
This commit is contained in:
Timothy Flynn 2023-01-16 10:33:15 -05:00 • committed by Tim Flynn
parent 6d710eeb43
commit b562348d31
4 changed files with 36 additions and 0 deletions
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26
Tests/LibUnicode/TestUnicodeCharacterTypes.cpp
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@ -48,6 +48,32 @@ TEST_CASE(to_unicode_uppercase)
EXPECT_EQ(Unicode::to_unicode_uppercase(0x3401u), 0x3401u);
EXPECT_EQ(Unicode::to_unicode_uppercase(0x3402u), 0x3402u);
EXPECT_EQ(Unicode::to_unicode_uppercase(0x4dbfu), 0x4dbfu);
// Code points whose uppercase and titlecase mappings actually differ.
EXPECT_EQ(Unicode::to_unicode_uppercase(0x01c6u), 0x01c4u); // "dž" to "DŽ"
EXPECT_EQ(Unicode::to_unicode_uppercase(0x01c9u), 0x01c7u); // "lj" to "LJ"
EXPECT_EQ(Unicode::to_unicode_uppercase(0x01ccu), 0x01cau); // "nj" to "NJ"
EXPECT_EQ(Unicode::to_unicode_uppercase(0x01f3u), 0x01f1u); // "dz" to "DZ"
}
TEST_CASE(to_unicode_titlecase)
{
compare_to_ascii(toupper, Unicode::to_unicode_titlecase);
EXPECT_EQ(Unicode::to_unicode_titlecase(0x03c9u), 0x03a9u); // "ω" to "Ω"
EXPECT_EQ(Unicode::to_unicode_titlecase(0x03a9u), 0x03a9u); // "Ω" to "Ω"
// Code points encoded by ranges in UnicodeData.txt
EXPECT_EQ(Unicode::to_unicode_titlecase(0x3400u), 0x3400u);
EXPECT_EQ(Unicode::to_unicode_titlecase(0x3401u), 0x3401u);
EXPECT_EQ(Unicode::to_unicode_titlecase(0x3402u), 0x3402u);
EXPECT_EQ(Unicode::to_unicode_titlecase(0x4dbfu), 0x4dbfu);
// Code points whose uppercase and titlecase mappings actually differ.
EXPECT_EQ(Unicode::to_unicode_titlecase(0x01c6u), 0x01c5u); // "dž" to "Dž"
EXPECT_EQ(Unicode::to_unicode_titlecase(0x01c9u), 0x01c8u); // "lj" to "Lj"
EXPECT_EQ(Unicode::to_unicode_titlecase(0x01ccu), 0x01cbu); // "nj" to "Nj"
EXPECT_EQ(Unicode::to_unicode_titlecase(0x01f3u), 0x01f2u); // "dz" to "Dz"
}
TEST_CASE(to_unicode_lowercase_unconditional_special_casing)