public void DocumentSnaphot_Should_Have_Correct_Line_Terminators()
{
TextDocument document = new TextDocument();
document.Text = "puppy\r\npussy\r\nbirdie";
DocumentSnapshot documentSnaphot = new DocumentSnapshot(document);
Assert.AreEqual("\r\n", documentSnaphot.GetLineTerminator(0));
Assert.AreEqual("\r\n", documentSnaphot.GetLineTerminator(1));
Assert.AreEqual("", documentSnaphot.GetLineTerminator(2));
}