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AK: Add a method to create a String with a repeated code point

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Timothy Flynn 2023-01-22 10:17:48 -05:00 • committed by Tim Flynn
parent d50724956e
commit 427b82065c
3 changed files with 120 additions and 0 deletions
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78
Tests/AK/TestString.cpp
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@ -357,3 +357,81 @@ TEST_CASE(find_byte_offset)
EXPECT_EQ(index5, 8u);
}
}
TEST_CASE(repeated)
{
{
auto string1 = MUST(String::repeated('a', 0));
EXPECT(string1.is_short_string());
EXPECT(string1.is_empty());
auto string2 = MUST(String::repeated(0x03C9U, 0));
EXPECT(string2.is_short_string());
EXPECT(string2.is_empty());
auto string3 = MUST(String::repeated(0x10300, 0));
EXPECT(string3.is_short_string());
EXPECT(string3.is_empty());
}
{
auto string1 = MUST(String::repeated('a', 1));
EXPECT(string1.is_short_string());
EXPECT_EQ(string1.bytes_as_string_view().length(), 1u);
EXPECT_EQ(string1, "a"sv);
auto string2 = MUST(String::repeated(0x03C9U, 1));
EXPECT(string2.is_short_string());
EXPECT_EQ(string2.bytes_as_string_view().length(), 2u);
EXPECT_EQ(string2, "ω"sv);
auto string3 = MUST(String::repeated(0x10300, 1));
#ifdef AK_ARCH_64_BIT
EXPECT(string3.is_short_string());
#else
EXPECT(!string3.is_short_string());
#endif
EXPECT_EQ(string3.bytes_as_string_view().length(), 4u);
EXPECT_EQ(string3, "𐌀"sv);
}
{
auto string1 = MUST(String::repeated('a', 3));
EXPECT(string1.is_short_string());
EXPECT_EQ(string1.bytes_as_string_view().length(), 3u);
EXPECT_EQ(string1, "aaa"sv);
auto string2 = MUST(String::repeated(0x03C9U, 3));
#ifdef AK_ARCH_64_BIT
EXPECT(string2.is_short_string());
#else
EXPECT(!string2.is_short_string());
#endif
EXPECT_EQ(string2.bytes_as_string_view().length(), 6u);
EXPECT_EQ(string2, "ωωω"sv);
auto string3 = MUST(String::repeated(0x10300, 3));
EXPECT(!string3.is_short_string());
EXPECT_EQ(string3.bytes_as_string_view().length(), 12u);
EXPECT_EQ(string3, "𐌀𐌀𐌀"sv);
}
{
auto string1 = MUST(String::repeated('a', 10));
EXPECT(!string1.is_short_string());
EXPECT_EQ(string1.bytes_as_string_view().length(), 10u);
EXPECT_EQ(string1, "aaaaaaaaaa"sv);
auto string2 = MUST(String::repeated(0x03C9U, 10));
EXPECT(!string2.is_short_string());
EXPECT_EQ(string2.bytes_as_string_view().length(), 20u);
EXPECT_EQ(string2, "ωωωωωωωωωω"sv);
auto string3 = MUST(String::repeated(0x10300, 10));
EXPECT(!string3.is_short_string());
EXPECT_EQ(string3.bytes_as_string_view().length(), 40u);
EXPECT_EQ(string3, "𐌀𐌀𐌀𐌀𐌀𐌀𐌀𐌀𐌀𐌀"sv);
}
EXPECT_CRASH("Creating a string from an invalid code point", [] {
(void)String::repeated(0xffffffff, 1);
return Test::Crash::Failure::DidNotCrash;
});
}