public void Should_only_back_to_start()
{
var reader = new BufferedReader(new StringReader("one line"));
reader.BackToPrevLine();
Assert.That(reader.ReadLine(), Is.EqualTo("one line"));
}
public void Should_back_to_prev_line()
{
var content = new StringBuilder();
content.AppendLine("line 1");
content.AppendLine("line 2");
var reader = new BufferedReader(new StringReader(content.ToString()));
reader.ReadLine();
reader.BackToPrevLine();
Assert.That(reader.ReadLine(), Is.EqualTo("line 1"));
}