diff --git a/AI Calculator/test_calculator.py b/AI Calculator/test_calculator.py
new file mode 100644
index 0000000000..f774a04301
--- /dev/null
+++ b/AI Calculator/test_calculator.py	
@@ -0,0 +1,50 @@
+import unittest
+from chatterbot import ChatBot
+
+def evaluate_expression(expression, bot):
+    try:
+        response = bot.get_response(expression)
+        return str(response)
+    except:
+        return "Please enter valid input."
+
+class TestCalculatorBot(unittest.TestCase):
+    
+    @classmethod
+    def setUpClass(cls):
+        cls.bot = ChatBot(name='Calculator',
+                          read_only=True,
+                          logic_adapters=["chatterbot.logic.MathematicalEvaluation"],
+                          storage_adapter="chatterbot.storage.SQLStorageAdapter")
+    
+    def test_addition(self):
+        result = evaluate_expression('3 + 4', self.bot)
+        self.assertEqual(result, '3 + 4 = 7')
+        
+    def test_subtraction(self):
+        result = evaluate_expression('10 - 5', self.bot)
+        self.assertEqual(result, '10 - 5 = 5')
+        
+    def test_multiplication(self):
+        result = evaluate_expression('6 * 7', self.bot)
+        self.assertEqual(result, '6 * 7 = 42')
+
+    def test_division(self):
+        result = evaluate_expression('15 / 3', self.bot)
+        self.assertEqual(result, '15 / 3 = 5')
+
+    def test_power(self):
+        result = evaluate_expression('4 ^ 2', self.bot)
+        self.assertEqual(result, '4 ^ 2 = 16')
+
+    def test_invalid_input(self):
+        result = evaluate_expression('three plus four', self.bot)
+        self.assertEqual(result, 'Please enter valid input.')
+        
+    def test_empty_input(self):
+        result = evaluate_expression('', self.bot)
+        self.assertEqual(result, 'Please enter valid input.')
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Air pollution prediction/test_air_quality_checker.py b/Air pollution prediction/test_air_quality_checker.py
new file mode 100644
index 0000000000..177665a6ed
--- /dev/null
+++ b/Air pollution prediction/test_air_quality_checker.py	
@@ -0,0 +1,46 @@
+import requests
+import unittest
+from unittest.mock import patch
+
+def get_air_quality(city, api_key):
+    url = 'http://api.waqi.info/feed/' + city + '/?token='
+    main_url = url + api_key
+    r = requests.get(main_url)
+    return r.json()['data']
+
+class TestAirQualityProgram(unittest.TestCase):
+
+    @patch('requests.get')
+    def test_get_air_quality(self, mock_get):
+        # Mocking the API response
+        mock_get.return_value.json.return_value = {
+            'data': {
+                'aqi': 100,
+                'iaqi': {
+                    'dew': {'v': 10},
+                    'no2': {'v': 20},
+                    'o3': {'v': 30},
+                    'so2': {'v': 40},
+                    'pm10': {'v': 50},
+                    'pm25': {'v': 60}
+                }
+            }
+        }
+
+        city = 'kanpur'
+        api_key = 'fake_api_key'
+        
+        # Call the get_air_quality function directly.
+        result = get_air_quality(city, api_key)
+
+        # Add assertions to check the correctness of the result.
+        self.assertEqual(result['aqi'], 100)
+        self.assertEqual(result['iaqi']['dew']['v'], 10)
+        self.assertEqual(result['iaqi']['no2']['v'], 20)
+        self.assertEqual(result['iaqi']['o3']['v'], 30)
+        self.assertEqual(result['iaqi']['so2']['v'], 40)
+        self.assertEqual(result['iaqi']['pm10']['v'], 50)
+        self.assertEqual(result['iaqi']['pm25']['v'], 60)
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Automated_scraper.py/test_content_scraper.py b/Automated_scraper.py/test_content_scraper.py
new file mode 100644
index 0000000000..fffe8619ef
--- /dev/null
+++ b/Automated_scraper.py/test_content_scraper.py
@@ -0,0 +1,45 @@
+import unittest
+from unittest.mock import patch
+from script import display_content
+
+class TestDisplayContent(unittest.TestCase):
+
+    @patch('script.requests.get')
+    def test_success(self, mock_get):
+        # Simulating a successful response
+        mock_get.return_value.status_code = 200
+        mock_get.return_value.text = '<html><body><p class="test">Hello, World!</p></body></html>'
+
+        url = 'http://example.com'
+        selector = '.test'
+        result = display_content(url, selector)
+        
+        # Check that the content was correctly extracted
+        self.assertEqual(result, ['Hello, World!'])
+
+    @patch('script.requests.get')
+    def test_failed_fetch(self, mock_get):
+        # Simulating a failed response
+        mock_get.return_value.status_code = 404
+
+        url = 'http://example.com'
+        selector = '.test'
+        result = display_content(url, selector)
+        
+        # Check that the function returns None in case of a failed response
+        self.assertIsNone(result)
+
+    @patch('script.requests.get')
+    def test_request_exception(self, mock_get):
+        # Simulating an exception during the request
+        mock_get.side_effect = requests.exceptions.RequestException("An exception")
+
+        url = 'http://example.com'
+        selector = '.test'
+        result = display_content(url, selector)
+
+        # Check that the function returns None in case of an exception
+        self.assertIsNone(result)
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/test_air.py b/test_air.py
new file mode 100644
index 0000000000..177665a6ed
--- /dev/null
+++ b/test_air.py
@@ -0,0 +1,46 @@
+import requests
+import unittest
+from unittest.mock import patch
+
+def get_air_quality(city, api_key):
+    url = 'http://api.waqi.info/feed/' + city + '/?token='
+    main_url = url + api_key
+    r = requests.get(main_url)
+    return r.json()['data']
+
+class TestAirQualityProgram(unittest.TestCase):
+
+    @patch('requests.get')
+    def test_get_air_quality(self, mock_get):
+        # Mocking the API response
+        mock_get.return_value.json.return_value = {
+            'data': {
+                'aqi': 100,
+                'iaqi': {
+                    'dew': {'v': 10},
+                    'no2': {'v': 20},
+                    'o3': {'v': 30},
+                    'so2': {'v': 40},
+                    'pm10': {'v': 50},
+                    'pm25': {'v': 60}
+                }
+            }
+        }
+
+        city = 'kanpur'
+        api_key = 'fake_api_key'
+        
+        # Call the get_air_quality function directly.
+        result = get_air_quality(city, api_key)
+
+        # Add assertions to check the correctness of the result.
+        self.assertEqual(result['aqi'], 100)
+        self.assertEqual(result['iaqi']['dew']['v'], 10)
+        self.assertEqual(result['iaqi']['no2']['v'], 20)
+        self.assertEqual(result['iaqi']['o3']['v'], 30)
+        self.assertEqual(result['iaqi']['so2']['v'], 40)
+        self.assertEqual(result['iaqi']['pm10']['v'], 50)
+        self.assertEqual(result['iaqi']['pm25']['v'], 60)
+
+if __name__ == '__main__':
+    unittest.main()