diff --git a/data/test_data_1 b/data/test_data_1
new file mode 100644
index 0000000..b4b5db8
--- /dev/null
+++ b/data/test_data_1
@@ -0,0 +1 @@
+{,,,,}
diff --git a/test/quizzes_test.py b/test/quizzes_test.py
index c4c1214..d791026 100644
--- a/test/quizzes_test.py
+++ b/test/quizzes_test.py
@@ -1,4 +1,6 @@
+from datetime import datetime
 import unittest
+import json
 
 from app.controllers.quizzes_controller import QuizzesController
 
@@ -10,11 +12,31 @@ def setUp(self):
         
     def test_expose_failure_01(self):
         """
-        Implement this function and two more that
-        execute the code and make it fail.
+        We load a JSON file that is empty
+
+        json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes
+        File: quizzes_controller.py, Line: 63
         """
-        self.assertTrue(True, 'Example assertion.')
-        
+        with self.assertRaises(json.decoder.JSONDecodeError):
+            QuizzesController("bad_data.json")
+         
+    def test_expose_failure_02(self):
+        '''
+        Crash in QuizzesController.add_answer() when adding an answer to a non-existent question
+        File: quizzes_controller.py, Line: 88
+        '''       
+        self.ctrl.clear_data()
+        with self.assertRaises(AttributeError):
+            self.ctrl.add_answer('non-existent-question-id', 'text', True)
+
+    def test_expose_failure_03(self):
+        """
+        Testing the ability to add question to a non-existent-quiz-id
+        Failed at line 39, initiating from quizzes_controller.py at line 75, quiz with id 'non-existent-quiz-id' does not exist.
+        """
+        controller = QuizzesController()
+        with self.assertRaises(AttributeError):
+            controller.add_question('non-existent-quiz-id', 'title', 'text')
 
 if __name__ == '__main__':
-    unittest.main()
\ No newline at end of file
+    unittest.main()