public void PeekPreviousBlock_SameBook()
{
var firstBook = m_books.First();
var firstBlock = firstBook[0];
var secondBlock = firstBook[1];
m_navigator.CurrentBlock = secondBlock;
BookScript currentBook = m_navigator.CurrentBook;
Block currentBlock = m_navigator.CurrentBlock;
Assert.AreEqual(firstBlock, m_navigator.GetPreviousBlock());
Assert.AreEqual(currentBlock, m_navigator.CurrentBlock);
Assert.AreEqual(currentBook, m_navigator.CurrentBook);
}