public void Test_DecodeSurrogatePair()
{
Assert.False(Rune.DecodeSurrogatePair('\uea85', out char[] chars));
Assert.IsNull(chars);
Assert.True(Rune.DecodeSurrogatePair(0x1F356, out chars));
Assert.AreEqual(2, chars.Length);
Assert.AreEqual('\ud83c', chars[0]);
Assert.AreEqual('\udf56', chars[1]);
Assert.AreEqual("🍖", new Rune(chars[0], chars[1]).ToString());
}
public void Test_Right_To_Left_Runes()
{
Rune r0 = 0x020000;
Rune r7 = 0x020007;
Rune r1b = 0x02001b;
Rune r9b = 0x02009b;
Assert.AreEqual(1, Rune.ColumnWidth(r0));
Assert.AreEqual(1, Rune.ColumnWidth(r7));
Assert.AreEqual(1, Rune.ColumnWidth(r1b));
Assert.AreEqual(1, Rune.ColumnWidth(r9b));
Rune.DecodeSurrogatePair("𐨁", out char[] chars);
var rtl = new Rune(chars[0], chars[1]);
var rtlp = new Rune('\ud802', '\ude01');
var s = "\U00010a01";
Assert.AreEqual(0, Rune.ColumnWidth(rtl));
Assert.AreEqual(0, Rune.ColumnWidth(rtlp));
Assert.AreEqual(2, s.Length);
}
bool ProcessTestStringUseChar(string s)
{
for (int i = 0; i < s.Length; i++)
{
if (!char.IsSurrogate(s[i]))
{
var buff = new byte[4];
Rune.EncodeRune(s[i], buff);
Assert.AreEqual((int)(s[i]), buff[0]);
}
else if (i + 1 < s.Length && char.IsSurrogatePair(s[i], s[i + 1]))
{
int codePoint = char.ConvertToUtf32(s[i], s[i + 1]);
Assert.AreEqual(codePoint, Rune.DecodeSurrogatePair(s[i], s[i + 1]));
i++; // so that when the loop iterates it's actually +2
}
else
{
throw new Exception("String was not well-formed UTF-16.");
}
}
return(true);
}
public void TestColumnWidth()
{
Rune a = 'a';
Rune b = 'b';
Rune c = 123;
Rune d = '\u1150'; // 0x1150 ᅐ Unicode Technical Report #11
Rune e = '\u1161'; // 0x1161 ᅡ null character with column equal to 0
Rune f = 31; // non printable character
Rune g = 127; // non printable character
string h = "\U0001fa01";
string i = "\U000e0fe1";
Rune j = '\u20D0';
Rune k = '\u25a0';
Rune l = '\u25a1';
Rune m = '\uf61e';
byte[] n = new byte[4] {
0xf0, 0x9f, 0x8d, 0x95
}; // UTF-8 Encoding
Rune o = new Rune('\ud83c', '\udf55'); // UTF-16 Encoding;
string p = "\U0001F355"; // UTF-32 Encoding
Rune q = '\u2103';
Rune r = '\u1100';
Rune s = '\u2501';
Assert.AreEqual(1, Rune.ColumnWidth(a));
Assert.AreEqual("a", a.ToString());
Assert.AreEqual(1, a.ToString().Length);
Assert.AreEqual(1, Rune.RuneLen(a));
Assert.AreEqual(1, Rune.ColumnWidth(b));
Assert.AreEqual("b", b.ToString());
Assert.AreEqual(1, b.ToString().Length);
Assert.AreEqual(1, Rune.RuneLen(b));
var rl = a < b;
Assert.IsTrue(rl);
Assert.AreEqual(1, Rune.ColumnWidth(c));
Assert.AreEqual("{", c.ToString());
Assert.AreEqual(1, c.ToString().Length);
Assert.AreEqual(1, Rune.RuneLen(c));
Assert.AreEqual(2, Rune.ColumnWidth(d));
Assert.AreEqual("ᅐ", d.ToString());
Assert.AreEqual(1, d.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(d));
Assert.AreEqual(2, Rune.ColumnWidth(e));
string join = "\u1104\u1161";
Assert.AreEqual("따", join);
Assert.AreEqual(4, join.Sum(x => Rune.ColumnWidth(x)));
Assert.IsFalse(Rune.DecodeSurrogatePair(join, out _));
Assert.AreEqual("ᅡ", e.ToString());
Assert.AreEqual(1, e.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(e));
Assert.AreEqual(-1, Rune.ColumnWidth(f));
Assert.AreEqual(1, f.ToString().Length);
Assert.AreEqual(1, Rune.RuneLen(f));
Assert.AreEqual(-1, Rune.ColumnWidth(g));
Assert.AreEqual(1, g.ToString().Length);
Assert.AreEqual(1, Rune.RuneLen(g));
var uh = ustring.Make(h);
(var runeh, var sizeh) = Rune.DecodeRune(uh);
Assert.AreEqual(2, Rune.ColumnWidth(runeh));
Assert.AreEqual("🨁", h);
Assert.AreEqual(2, runeh.ToString().Length);
Assert.AreEqual(4, Rune.RuneLen(runeh));
Assert.AreEqual(sizeh, Rune.RuneLen(runeh));
for (int x = 0; x < uh.Length - 1; x++)
{
Assert.False(Rune.EncodeSurrogatePair(uh[x], uh[x + 1], out _));
}
Assert.IsTrue(Rune.ValidRune(runeh));
Assert.True(Rune.Valid(uh.ToByteArray()));
Assert.True(Rune.FullRune(uh.ToByteArray()));
Assert.AreEqual(1, Rune.RuneCount(uh));
(var runelh, var sizelh) = Rune.DecodeLastRune(uh);
Assert.AreEqual(2, Rune.ColumnWidth(runelh));
Assert.AreEqual(2, runelh.ToString().Length);
Assert.AreEqual(4, Rune.RuneLen(runelh));
Assert.AreEqual(sizelh, Rune.RuneLen(runelh));
Assert.IsTrue(Rune.ValidRune(runelh));
var ui = ustring.Make(i);
(var runei, var sizei) = Rune.DecodeRune(ui);
Assert.AreEqual(1, Rune.ColumnWidth(runei));
Assert.AreEqual("", i);
Assert.AreEqual(2, runei.ToString().Length);
Assert.AreEqual(4, Rune.RuneLen(runei));
Assert.AreEqual(sizei, Rune.RuneLen(runei));
for (int x = 0; x < ui.Length - 1; x++)
{
Assert.False(Rune.EncodeSurrogatePair(ui[x], ui[x + 1], out _));
}
Assert.IsTrue(Rune.ValidRune(runei));
Assert.True(Rune.Valid(ui.ToByteArray()));
Assert.True(Rune.FullRune(ui.ToByteArray()));
(var runeli, var sizeli) = Rune.DecodeLastRune(ui);
Assert.AreEqual(1, Rune.ColumnWidth(runeli));
Assert.AreEqual(2, runeli.ToString().Length);
Assert.AreEqual(4, Rune.RuneLen(runeli));
Assert.AreEqual(sizeli, Rune.RuneLen(runeli));
Assert.IsTrue(Rune.ValidRune(runeli));
Assert.AreNotEqual(Rune.ColumnWidth(runeh), Rune.ColumnWidth(runei));
Assert.AreNotEqual(h, i);
Assert.AreEqual(runeh.ToString().Length, runei.ToString().Length);
Assert.AreEqual(Rune.RuneLen(runeh), Rune.RuneLen(runei));
Assert.AreEqual(Rune.RuneLen(runeh), Rune.RuneLen(runei));
var uj = ustring.Make(j);
(var runej, var sizej) = Rune.DecodeRune(uj);
Assert.AreEqual(0, Rune.ColumnWidth(j));
Assert.AreEqual(0, Rune.ColumnWidth(uj.RuneAt(0)));
Assert.AreEqual(j, uj.RuneAt(0));
Assert.AreEqual("⃐", j.ToString());
Assert.AreEqual("⃐", uj.ToString());
Assert.AreEqual(1, j.ToString().Length);
Assert.AreEqual(1, runej.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(j));
Assert.AreEqual(sizej, Rune.RuneLen(runej));
Assert.AreEqual(1, Rune.ColumnWidth(k));
Assert.AreEqual("■", k.ToString());
Assert.AreEqual(1, k.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(k));
Assert.AreEqual(1, Rune.ColumnWidth(l));
Assert.AreEqual("□", l.ToString());
Assert.AreEqual(1, l.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(l));
Assert.AreEqual(1, Rune.ColumnWidth(m));
Assert.AreEqual("", m.ToString());
Assert.AreEqual(1, m.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(m));
var rn = Rune.DecodeRune(ustring.Make(n)).rune;
Assert.AreEqual(1, Rune.ColumnWidth(rn));
Assert.AreEqual("🍕", rn.ToString());
Assert.AreEqual(2, rn.ToString().Length);
Assert.AreEqual(4, Rune.RuneLen(rn));
Assert.AreEqual(1, Rune.ColumnWidth(o));
Assert.AreEqual("🍕", o.ToString());
Assert.AreEqual(2, o.ToString().Length);
Assert.AreEqual(4, Rune.RuneLen(o));
var rp = Rune.DecodeRune(ustring.Make(p)).rune;
Assert.AreEqual(1, Rune.ColumnWidth(rp));
Assert.AreEqual("🍕", p);
Assert.AreEqual(2, p.Length);
Assert.AreEqual(4, Rune.RuneLen(rp));
Assert.AreEqual(1, Rune.ColumnWidth(q));
Assert.AreEqual("℃", q.ToString());
Assert.AreEqual(1, q.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(q));
var rq = Rune.DecodeRune(ustring.Make(q)).rune;
Assert.AreEqual(1, Rune.ColumnWidth(rq));
Assert.AreEqual("℃", rq.ToString());
Assert.AreEqual(1, rq.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(rq));
Assert.AreEqual(2, Rune.ColumnWidth(r));
Assert.AreEqual("ᄀ", r.ToString());
Assert.AreEqual(1, r.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(r));
Assert.AreEqual(1, Rune.ColumnWidth(s));
Assert.AreEqual("━", s.ToString());
Assert.AreEqual(1, s.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(s));
var buff = new byte[4];
var sb = Rune.EncodeRune('\u2503', buff);
Assert.AreEqual(1, Rune.ColumnWidth('\u2503'));
(var rune, var size) = Rune.DecodeRune(ustring.Make('\u2503'));
Assert.AreEqual(sb, size);
Assert.AreEqual('\u2503', (uint)rune);
var scb = char.ConvertToUtf32("℃", 0);
var scr = '℃'.ToString().Length;
Assert.AreEqual(scr, Rune.ColumnWidth((uint)scb));
buff = new byte[4];
sb = Rune.EncodeRune('\u1100', buff);
Assert.AreEqual(2, Rune.ColumnWidth('\u1100'));
Assert.AreEqual(2, ustring.Make('\u1100').ConsoleWidth);
Assert.AreEqual(1, '\u1100'.ToString().Length); // Length as string returns 1 but in reality it occupies 2 columns.
(rune, size) = Rune.DecodeRune(ustring.Make('\u1100'));
Assert.AreEqual(sb, size);
Assert.AreEqual('\u1100', (uint)rune);
string str = "\u2615";
Assert.AreEqual("☕", str);
Assert.AreEqual(1, str.Sum(x => Rune.ColumnWidth(x)));
Assert.AreEqual(1, ((ustring)str).ConsoleWidth);
Assert.AreEqual(1, Rune.RuneCount(str));
Assert.AreEqual(1, str.Length);
str = "\u2615\ufe0f"; // Identical but \ufe0f forces it to be rendered as a colorful image as compared to a monochrome text variant.
Assert.AreEqual("☕️", str);
Assert.AreEqual(1, str.Sum(x => Rune.ColumnWidth(x)));
Assert.AreEqual(1, ((ustring)str).ConsoleWidth);
Assert.AreEqual(2, Rune.RuneCount(str));
Assert.AreEqual(2, str.Length);
str = "\u231a";
Assert.AreEqual("⌚", str);
Assert.AreEqual(2, str.Sum(x => Rune.ColumnWidth(x)));
Assert.AreEqual(2, ((ustring)str).ConsoleWidth);
Assert.AreEqual(1, Rune.RuneCount(str));
Assert.AreEqual(1, str.Length);
str = "\u231b";
Assert.AreEqual("⌛", str);
Assert.AreEqual(2, str.Sum(x => Rune.ColumnWidth(x)));
Assert.AreEqual(2, ((ustring)str).ConsoleWidth);
Assert.AreEqual(1, Rune.RuneCount(str));
Assert.AreEqual(1, str.Length);
str = "\u231c";
Assert.AreEqual("⌜", str);
Assert.AreEqual(1, str.Sum(x => Rune.ColumnWidth(x)));
Assert.AreEqual(1, ((ustring)str).ConsoleWidth);
Assert.AreEqual(1, Rune.RuneCount(str));
Assert.AreEqual(1, str.Length);
str = "\u1dc0";
Assert.AreEqual("᷀", str);
Assert.AreEqual(0, str.Sum(x => Rune.ColumnWidth(x)));
Assert.AreEqual(0, ((ustring)str).ConsoleWidth);
Assert.AreEqual(1, Rune.RuneCount(str));
Assert.AreEqual(1, str.Length);
str = "\ud83e\udd16";
Assert.AreEqual("🤖", str);
Assert.AreEqual(2, str.Sum(x => Rune.ColumnWidth(x)));
Assert.AreEqual(2, ((ustring)str).ConsoleWidth);
Assert.AreEqual(1, Rune.RuneCount(str)); // Here returns 1 because is a valid surrogate pair resulting in only rune >=U+10000..U+10FFFF
Assert.AreEqual(2, str.Length); // String always preserves the originals values of each surrogate pair
str = "\U0001f9e0";
Assert.AreEqual("🧠", str);
Assert.AreEqual(2, str.Sum(x => Rune.ColumnWidth(x)));
Assert.AreEqual(2, ((ustring)str).ConsoleWidth);
Assert.AreEqual(1, Rune.RuneCount(str));
Assert.AreEqual(2, str.Length);
}
public void TestColumnWidth()
{
Assert.AreEqual(1, Rune.ColumnWidth(a));
Assert.AreEqual("a", a.ToString());
Assert.AreEqual(1, a.ToString().Length);
Assert.AreEqual(1, Rune.RuneLen(a));
Assert.AreEqual(1, Rune.ColumnWidth(b));
Assert.AreEqual("b", b.ToString());
Assert.AreEqual(1, b.ToString().Length);
Assert.AreEqual(1, Rune.RuneLen(b));
var rl = a < b;
Assert.IsTrue(rl);
Assert.AreEqual(1, Rune.ColumnWidth(c));
Assert.AreEqual("{", c.ToString());
Assert.AreEqual(1, c.ToString().Length);
Assert.AreEqual(1, Rune.RuneLen(c));
Assert.AreEqual(2, Rune.ColumnWidth(d));
Assert.AreEqual("ᅐ", d.ToString());
Assert.AreEqual(1, d.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(d));
Assert.AreEqual(0, Rune.ColumnWidth(e));
Assert.AreEqual("ᅡ", e.ToString());
Assert.AreEqual(1, e.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(e));
Assert.AreEqual(-1, Rune.ColumnWidth(f));
Assert.AreEqual(1, f.ToString().Length);
Assert.AreEqual(1, Rune.RuneLen(f));
Assert.AreEqual(-1, Rune.ColumnWidth(g));
Assert.AreEqual(1, g.ToString().Length);
Assert.AreEqual(1, Rune.RuneLen(g));
var uh = ustring.Make(h);
(var runeh, var sizeh) = Rune.DecodeRune(uh);
Assert.AreEqual(2, Rune.ColumnWidth(runeh));
Assert.AreEqual("🨁", h);
Assert.AreEqual(2, runeh.ToString().Length);
Assert.AreEqual(4, Rune.RuneLen(runeh));
Assert.AreEqual(sizeh, Rune.RuneLen(runeh));
for (int i = 0; i < uh.Length - 1; i++)
{
Assert.False(Rune.DecodeSurrogatePair(uh[i], uh[i + 1]) > 0);
}
Assert.IsTrue(Rune.ValidRune(runeh));
Assert.True(Rune.Valid(uh.ToByteArray()));
Assert.True(Rune.FullRune(uh.ToByteArray()));
Assert.AreEqual(1, Rune.RuneCount(uh));
(var runelh, var sizelh) = Rune.DecodeLastRune(uh);
Assert.AreEqual(2, Rune.ColumnWidth(runelh));
Assert.AreEqual(2, runelh.ToString().Length);
Assert.AreEqual(4, Rune.RuneLen(runelh));
Assert.AreEqual(sizelh, Rune.RuneLen(runelh));
Assert.IsTrue(Rune.ValidRune(runelh));
var ui = ustring.Make(i);
(var runei, var sizei) = Rune.DecodeRune(ui);
Assert.AreEqual(1, Rune.ColumnWidth(runei));
Assert.AreEqual("", i);
Assert.AreEqual(2, runei.ToString().Length);
Assert.AreEqual(4, Rune.RuneLen(runei));
Assert.AreEqual(sizei, Rune.RuneLen(runei));
for (int i = 0; i < ui.Length - 1; i++)
{
Assert.False(Rune.DecodeSurrogatePair(ui[i], ui[i + 1]) > 0);
}
Assert.IsTrue(Rune.ValidRune(runei));
Assert.True(Rune.Valid(ui.ToByteArray()));
Assert.True(Rune.FullRune(ui.ToByteArray()));
(var runeli, var sizeli) = Rune.DecodeLastRune(ui);
Assert.AreEqual(1, Rune.ColumnWidth(runeli));
Assert.AreEqual(2, runeli.ToString().Length);
Assert.AreEqual(4, Rune.RuneLen(runeli));
Assert.AreEqual(sizeli, Rune.RuneLen(runeli));
Assert.IsTrue(Rune.ValidRune(runeli));
Assert.AreNotEqual(Rune.ColumnWidth(runeh), Rune.ColumnWidth(runei));
Assert.AreNotEqual(h, i);
Assert.AreEqual(runeh.ToString().Length, runei.ToString().Length);
Assert.AreEqual(Rune.RuneLen(runeh), Rune.RuneLen(runei));
Assert.AreEqual(Rune.RuneLen(runeh), Rune.RuneLen(runei));
var uj = ustring.Make(j);
(var runej, var sizej) = Rune.DecodeRune(uj);
Assert.AreEqual(0, Rune.ColumnWidth(j));
Assert.AreEqual(0, Rune.ColumnWidth(uj.RuneAt(0)));
Assert.AreEqual(j, uj.RuneAt(0));
Assert.AreEqual("⃐", j.ToString());
Assert.AreEqual("⃐", uj.ToString());
Assert.AreEqual(1, j.ToString().Length);
Assert.AreEqual(1, runej.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(j));
Assert.AreEqual(sizej, Rune.RuneLen(runej));
Assert.AreEqual(1, Rune.ColumnWidth(k));
Assert.AreEqual("■", k.ToString());
Assert.AreEqual(1, k.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(k));
Assert.AreEqual(1, Rune.ColumnWidth(l));
Assert.AreEqual("□", l.ToString());
Assert.AreEqual(1, l.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(l));
Assert.AreEqual(1, Rune.ColumnWidth(m));
Assert.AreEqual("", m.ToString());
Assert.AreEqual(1, m.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(m));
var rn = Rune.DecodeRune(ustring.Make(n)).rune;
Assert.AreEqual(1, Rune.ColumnWidth(rn));
Assert.AreEqual("🍕", rn.ToString());
Assert.AreEqual(2, rn.ToString().Length);
Assert.AreEqual(4, Rune.RuneLen(rn));
Assert.AreEqual(1, Rune.ColumnWidth(o));
Assert.AreEqual("🍕", o.ToString());
Assert.AreEqual(2, o.ToString().Length);
Assert.AreEqual(4, Rune.RuneLen(o));
var rp = Rune.DecodeRune(ustring.Make(p)).rune;
Assert.AreEqual(1, Rune.ColumnWidth(rp));
Assert.AreEqual("🍕", p);
Assert.AreEqual(2, p.Length);
Assert.AreEqual(4, Rune.RuneLen(rp));
Assert.AreEqual(1, Rune.ColumnWidth(q));
Assert.AreEqual("℃", q.ToString());
Assert.AreEqual(1, q.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(q));
var rq = Rune.DecodeRune(ustring.Make(q)).rune;
Assert.AreEqual(1, Rune.ColumnWidth(rq));
Assert.AreEqual("℃", rq.ToString());
Assert.AreEqual(1, rq.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(rq));
Assert.AreEqual(2, Rune.ColumnWidth(r));
Assert.AreEqual("ᄀ", r.ToString());
Assert.AreEqual(1, r.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(r));
Assert.AreEqual(1, Rune.ColumnWidth(s));
Assert.AreEqual("━", s.ToString());
Assert.AreEqual(1, s.ToString().Length);
Assert.AreEqual(3, Rune.RuneLen(s));
var buff = new byte[4];
var sb = Rune.EncodeRune('\u2503', buff);
var scb = char.ConvertToUtf32("℃", 0);
var scr = '℃'.ToString().Length;
}
public void TestRune()
{
Rune a = new Rune('a');
Assert.AreEqual(1, Rune.ColumnWidth(a));
Assert.AreEqual(1, a.ToString().Length);
Assert.AreEqual("a", a.ToString());
Rune b = new Rune(0x0061);
Assert.AreEqual(1, Rune.ColumnWidth(b));
Assert.AreEqual(1, b.ToString().Length);
Assert.AreEqual("a", b.ToString());
Rune c = new Rune('\u0061');
Assert.AreEqual(1, Rune.ColumnWidth(c));
Assert.AreEqual(1, c.ToString().Length);
Assert.AreEqual("a", c.ToString());
Rune d = new Rune(0x10421);
Assert.AreEqual(1, Rune.ColumnWidth(d));
Assert.AreEqual(2, d.ToString().Length);
Assert.AreEqual("𐐡", d.ToString());
Assert.False(Rune.DecodeSurrogatePair('\ud799', '\udc21') > 0);
Assert.Throws <ArgumentOutOfRangeException>(() => new Rune('\ud799', '\udc21'));
Rune e = new Rune('\ud801', '\udc21');
Assert.AreEqual(1, Rune.ColumnWidth(e));
Assert.AreEqual(2, e.ToString().Length);
Assert.AreEqual("𐐡", e.ToString());
Assert.Throws <ArgumentException>(() => new Rune('\ud801'));
Rune f = new Rune('\ud83c', '\udf39');
Assert.AreEqual(1, Rune.ColumnWidth(f));
Assert.AreEqual(2, f.ToString().Length);
Assert.AreEqual("🌹", f.ToString());
Assert.DoesNotThrow(() => new Rune(0x10ffff));
var g = new Rune(0x10ffff);
Assert.AreEqual(1, Rune.ColumnWidth(g));
Assert.AreEqual(2, g.ToString().Length);
Assert.AreEqual("", g.ToString());
Assert.Throws <ArgumentOutOfRangeException>(() => new Rune(0x12345678));
var h = new Rune('\u1150');
Assert.AreEqual(2, Rune.ColumnWidth(h));
Assert.AreEqual(1, h.ToString().Length);
Assert.AreEqual("ᅐ", h.ToString());
var i = new Rune('\u4F60');
Assert.AreEqual(2, Rune.ColumnWidth(i));
Assert.AreEqual(1, i.ToString().Length);
Assert.AreEqual("你", i.ToString());
var j = new Rune('\u597D');
Assert.AreEqual(2, Rune.ColumnWidth(j));
Assert.AreEqual(1, j.ToString().Length);
Assert.AreEqual("好", j.ToString());
var k = new Rune('\ud83d', '\udc02');
Assert.AreEqual(1, Rune.ColumnWidth(k));
Assert.AreEqual(2, k.ToString().Length);
Assert.AreEqual("🐂", k.ToString());
var l = new Rune('\ud801', '\udcbb');
Assert.AreEqual(1, Rune.ColumnWidth(l));
Assert.AreEqual(2, l.ToString().Length);
Assert.AreEqual("𐒻", l.ToString());
var m = new Rune('\ud801', '\udccf');
Assert.AreEqual(1, Rune.ColumnWidth(m));
Assert.AreEqual(2, m.ToString().Length);
Assert.AreEqual("𐓏", m.ToString());
var n = new Rune('\u00e1');
Assert.AreEqual(1, Rune.ColumnWidth(n));
Assert.AreEqual(1, n.ToString().Length);
Assert.AreEqual("á", n.ToString());
var o = new Rune('\ud83d', '\udd2e');
Assert.AreEqual(1, Rune.ColumnWidth(o));
Assert.AreEqual(2, o.ToString().Length);
Assert.AreEqual("🔮", o.ToString());
var p = new Rune('\u2329');
Assert.AreEqual(2, Rune.ColumnWidth(p));
Assert.AreEqual(1, p.ToString().Length);
Assert.AreEqual("〈", p.ToString());
var q = new Rune('\u232a');
Assert.AreEqual(2, Rune.ColumnWidth(q));
Assert.AreEqual(1, q.ToString().Length);
Assert.AreEqual("〉", q.ToString());
var r = Rune.DecodeRune(ustring.Make("\U0000232a")).rune;
Assert.AreEqual(2, Rune.ColumnWidth(r));
Assert.AreEqual(1, r.ToString().Length);
Assert.AreEqual("〉", r.ToString());
PrintTextElementCount(ustring.Make('\u00e1'), "á", 1, 1, 1, 1);
PrintTextElementCount(ustring.Make('\u0061', '\u0301'), "á", 1, 2, 2, 1);
PrintTextElementCount(ustring.Make(new Rune[] { new Rune(0x1f469), new Rune(0x1f3fd), new Rune('\u200d'), new Rune(0x1f692) }),
"👩🏽🚒", 3, 4, 7, 4);
PrintTextElementCount(ustring.Make(new Rune[] { new Rune(0x1f469), new Rune(0x1f3fd), new Rune('\u200d'), new Rune(0x1f692) }),
"\U0001f469\U0001f3fd\u200d\U0001f692", 3, 4, 7, 4);
PrintTextElementCount(ustring.Make(new Rune('\ud801', '\udccf')),
"\ud801\udccf", 1, 1, 2, 1);
}