public void CommentLinesUsingSelectLines()
{
// Pre-conditions
Assert.AreEqual(textCore.GetLine(2), "\t\tcruel\n");
Assert.AreEqual(textCore.GetLine(3), "\tworld");
textCore.SelectLines(2, 1);
textCore.CommentLines(true);
// Post-conditions
Assert.AreEqual(textCore.GetLine(2), "\t\t//cruel\n");
Assert.AreEqual(textCore.GetLine(3), "\t//world");
}