Added logging, exception on tests

Co-Authored-By: Carrington <215159144+carrington-cs@users.noreply.github.com>

Author: Carrington-dev

examples/with-unittest/library_management_system/main.py

@@ -1,3 +1,18 @@
+import logging
+
+logging.basicConfig(
+    format='%(asctime)s - %(levelname)s - %(message)s',
+    datefmt='%Y-%m-%d %H:%M:%S',
+    level=logging.DEBUG,
+    # add streamHandler or fileHandler if needed
+    handlers = [
+        logging.StreamHandler(),
+        logging.FileHandler('logs/lms.log')  # Uncomment to log to a file
+    ]
+)
+
+logger = logging.getLogger(__name__)
+
 class Library:
     """
     Docstring for Library
@@ -8,6 +23,20 @@ def __init__(self, name):
         self.name = name
         self.reading_units = {}
         self.librarians = {}
+        self.cart = {}
+    
+    def get_reading_materials(self):
+        return self.reading_units
+
+    def get_librarians(self):
+        return self.librarians
+    
+    def book_reading_material_unit(self, reading_material: ReadingMaterialUnit):
+        if reading_material.isbn not in self.cart:
+            self.cart[reading_material.isbn] = True
+        else:
+            logger.info(f"{reading_material.isbn} is already reserved for this user")
+            raise Exception(f"{reading_material.isbn} is already reserved for this user")
 
 class ReadingMaterialUnit:
     """

examples/with-unittest/library_management_system/tests/test_library.py

@@ -35,7 +35,7 @@ def test_library_has_librarians(self):
         self.assertNotEqual(self.library.librarians, None)
         self.assertTrue(type(self.library.librarians), dict)
 
-    def test_library_booking_checkout(self, reading_material):
+    def test_library_booking_checkout(self):
         """
         Docstring for test_library_booking_checkout
         
@@ -46,6 +46,20 @@ def test_library_booking_checkout(self, reading_material):
         self.library.book_reading_material_unit(reading_material)
         self.assertTrue(1, len(self.library.get_reading_materials()))
 
+    def test_library_booking_checkout_collision(self):
+        """
+        Docstring for test_library_booking_checkout
+        
+        :param self: Description
+        :param reading_material: reading material
+        """
+        reading_material = ReadingMaterialUnit("New Maths", "author", "isbn", "year_published")
+        reading_material2 = ReadingMaterialUnit("New Maths", "author", "isbn", "year_published")
+        self.library.book_reading_material_unit(reading_material)
+        with self.assertRaises(Exception):
+            self.library.book_reading_material_unit(reading_material2)
+        # self.assertTrue(1, len(self.library.get_reading_materials()))
+
     def test_library_booking_system_cancellelation(self):
         """
         Docstring for test_library_has_librarians