public void AddSimple()
{
var textBuffer = CreateTextBuffer("A𠈓C");
var point = new SnapshotCodePoint(textBuffer.GetStartPoint());
AssertIt(point.Add(1), codePointInfo: CodePointInfo.SurrogatePairHighCharacter, text: "𠈓", position: 1);
AssertIt(point.Add(2), codePointInfo: CodePointInfo.SimpleCharacter, text: "C", position: 3);
AssertIt(point.Add(3), codePointInfo: CodePointInfo.EndPoint);
}
public void AddPastEnd()
{
var textBuffer = CreateTextBuffer("A𠈓C");
var point = new SnapshotCodePoint(textBuffer.GetStartPoint());
Assert.Throws <ArgumentOutOfRangeException>(() => point.Add(4));
}
public void AddAcrossLines()
{
var textBuffer = CreateTextBuffer("cat", "dog");
var point1 = new SnapshotCodePoint(textBuffer.GetStartPoint());
var point2 = point1.Add(5);
Assert.Equal(1, point2.Line.LineNumber);
}
public void AddKeepsLineReference()
{
var textBuffer = CreateTextBuffer("cat", "dog");
var point = new SnapshotCodePoint(textBuffer.GetStartPoint());
var line = point.Line;
for (int i = 0; i < 3; i++)
{
point = point.Add(1);
Assert.Same(line, point.Line);
}
}
