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AK: Implement creating a UTF-16 string from a repeated code point

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This commit is contained in:
Timothy Flynn 2025-07-25 09:24:19 -04:00 • committed by Jelle Raaijmakers
parent a46e9b2adb
commit df77ae1920
Notes: github-actions[bot] 2025-07-25 16:18:13 +00:00
5 changed files with 110 additions and 0 deletions
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55
Tests/AK/TestUtf16String.cpp
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@ -356,6 +356,61 @@ TEST_CASE(formatted)
}
}
TEST_CASE(repeated)
{
{
auto string1 = Utf16String::repeated('a', 0);
EXPECT(string1.is_empty());
auto string2 = Utf16String::repeated(0x03C9U, 0);
EXPECT(string2.is_empty());
auto string3 = Utf16String::repeated(0x10300, 0);
EXPECT(string3.is_empty());
}
{
auto string1 = Utf16String::repeated('a', 1);
EXPECT_EQ(string1.length_in_code_units(), 1uz);
EXPECT_EQ(string1, u"a"sv);
auto string2 = Utf16String::repeated(0x03C9U, 1);
EXPECT_EQ(string2.length_in_code_units(), 1uz);
EXPECT_EQ(string2, u"ω"sv);
auto string3 = Utf16String::repeated(0x10300, 1);
EXPECT_EQ(string3.length_in_code_units(), 2uz);
EXPECT_EQ(string3, u"𐌀"sv);
}
{
auto string1 = Utf16String::repeated('a', 3);
EXPECT_EQ(string1.length_in_code_units(), 3uz);
EXPECT_EQ(string1, u"aaa"sv);
auto string2 = Utf16String::repeated(0x03C9U, 3);
EXPECT_EQ(string2.length_in_code_units(), 3uz);
EXPECT_EQ(string2, u"ωωω"sv);
auto string3 = Utf16String::repeated(0x10300, 3);
EXPECT_EQ(string3.length_in_code_units(), 6uz);
EXPECT_EQ(string3, u"𐌀𐌀𐌀"sv);
}
{
auto string1 = Utf16String::repeated('a', 10);
EXPECT_EQ(string1.length_in_code_units(), 10uz);
EXPECT_EQ(string1, u"aaaaaaaaaa"sv);
auto string2 = Utf16String::repeated(0x03C9U, 10);
EXPECT_EQ(string2.length_in_code_units(), 10uz);
EXPECT_EQ(string2, u"ωωωωωωωωωω"sv);
auto string3 = Utf16String::repeated(0x10300, 10);
EXPECT_EQ(string3.length_in_code_units(), 20uz);
EXPECT_EQ(string3, u"𐌀𐌀𐌀𐌀𐌀𐌀𐌀𐌀𐌀𐌀"sv);
}
EXPECT_DEATH("Creating a string from an invalid code point", (void)Utf16String::repeated(0xffffffff, 1));
}
TEST_CASE(copy_operations)
{
auto test = [](Utf16String const& string1) {