public void InsertText_Simple()
{
Init();
lines.SetText("line0\nline1 text\r\nline3");
CollectionAssert.AreEqual(new string[] { "line0\n", "line1 text\r\n", "line3" }, lines.Debug_GetLinesText());
// line0N
// line1 textRN
// line3
lines.InsertText(4, "ABCDEFGH");
CollectionAssert.AreEqual(new string[] { "lineABCDEFGH0\n", "line1 text\r\n", "line3" }, lines.Debug_GetLinesText());
Assert.AreEqual(31, lines.charsCount);
}