public void Map16to32Test()
{
// Arrange
var buf = new Utf32Buffer();
// Act
buf.Add(mixedString);
// Assert
for (int i = 0; i < mixedString.Length; i++)
{
char ch = mixedString[i];
var ch32 = buf[buf.Utf16OffsetToUtf32Offset(i)];
if (ch >= 0xD800 && ch <= 0xDFFF)
{
var chL = mixedString[i + 1];
var ch32actual = 0x10000 | ((ch - 0xD800) << 10) | (chL - 0xDC00);
Assert.Equal(ch32, ch32actual);
i++;
}
else if (ch == '\r' && mixedString[i + 1] == '\n')
{
Assert.Equal('\n', ch32);
i++;
}
else
{
Assert.Equal(ch, ch32);
}
}
}
public void DeleteTextEnd()
{
// Arrange
var buf = new Utf32Buffer();
// Act
buf.Add("abxx🌐xxcd");
buf.Delete(4, 5);
// Assert
Assert.Equal("abxx", buf.ToString());
}
public void ConvertToUtf16()
{
// Arrange
var buf = new Utf32Buffer();
// Act
buf.Add(mixedString);
var str2 = Utf32Utils.FromUtf32(buf.AsSlice());
// Assert
Assert.Equal(mixedString.Replace("\r", ""), str2);
}
public void InsertText()
{
// Arrange
var buf = new Utf32Buffer();
var strA = "abcd";
var strB = "xx🌐xx";
// Act
buf.Add(strA);
buf.Insert(2, strB);
// Assert
Assert.Equal("abxx🌐xxcd", buf.ToString());
}
public void AddText()
{
// Arrange
var buf = new Utf32Buffer();
var str = "ab🌐cde";
// Act
buf.Add(str);
// Assert
Assert.Equal(7, str.Length);
Assert.Equal(6, buf.Length);
Assert.Equal(str, buf.ToString());
}
public void Map32to16Test()
{
// Arrange
var buf = new Utf32Buffer();
// Act
buf.Add(mixedString);
// Assert
for (int i32 = 0; i32 < buf.Length; i32++)
{
var i16 = buf.Utf32OffsetToUtf16Offset(i32);
var i32b = buf.Utf16OffsetToUtf32Offset(i16);
Assert.Equal(i32, i32b);
}
}
public void MapSurrogateToBase()
{
// Arrange
var buf = new Utf32Buffer();
// Act
buf.Add(mixedString);
// Assert
for (int i = 0; i < mixedString.Length; i++)
{
char ch = mixedString[i];
if ((ch >= 0xDC00 && ch <= 0xDFFF) || (ch == '\n' && mixedString[i - 1] == '\r'))
{
int prior = buf.Utf16OffsetToUtf32Offset(i - 1);
int current = buf.Utf16OffsetToUtf32Offset(i);
Assert.Equal(prior, current);
}
}
}