public static void Searching_StandaloneSurrogate_Fails()
{
Utf8String utf8String = u8("\ud800\udfff");
Assert.False(utf8String.Contains('\ud800'));
Assert.False(utf8String.Contains('\udfff'));
Assert.Equal(-1, utf8String.IndexOf('\ud800'));
Assert.Equal(-1, utf8String.IndexOf('\udfff'));
Assert.False(utf8String.StartsWith('\ud800'));
Assert.False(utf8String.StartsWith('\udfff'));
Assert.False(utf8String.EndsWith('\ud800'));
Assert.False(utf8String.EndsWith('\udfff'));
}
public static void Contains_And_IndexOf_CharRune_Ordinal(Utf8String utf8String, Rune searchValue, int expectedIndex)
{
// Contains
if (searchValue.IsBmp)
{
Assert.Equal(expectedIndex >= 0, utf8String.Contains((char)searchValue.Value));
}
Assert.Equal(expectedIndex >= 0, utf8String.Contains(searchValue));
// IndexOf
if (searchValue.IsBmp)
{
Assert.Equal(expectedIndex, utf8String.IndexOf((char)searchValue.Value));
}
Assert.Equal(expectedIndex, utf8String.IndexOf(searchValue));
}