Started books per page algorithm, updated some tests

tests/test_bookserver.py

@@ -1,11 +1,17 @@
-import unittest
 import sys
+import unittest
+
+from lib.pyShelf import BookDisplay, BookServer
+
 sys.path.insert(0, '../lib')
 sys.path.insert(1, '../')
-from pyShelf import BookServer
 
 class BookServerTest(unittest.TestCase):
 
     def test_bookserver(self):
         server = BookServer()
         self.assertTrue(server.run())
+
+    def test_booksPerPage(self):
+        x, y = 900, 450
+        self.assertGreater(BookDisplay().booksPerPage([x,y]), 0)