diff --git a/client.py b/client3.py
similarity index 100%
rename from client.py
rename to client3.py
diff --git a/client_test.py b/client_test.py
new file mode 100644
index 00000000000..af2bf26b3cc
--- /dev/null
+++ b/client_test.py
@@ -0,0 +1,25 @@
+import unittest
+from client3 import getDataPoint
+
+class ClientTest(unittest.TestCase):
+  def test_getDataPoint_calculatePrice(self):
+    quotes = [
+      {'top_ask': {'price': 121.2, 'size': 36}, 'timestamp': '2019-02-11 22:06:30.572453', 'top_bid': {'price': 120.48, 'size': 109}, 'id': '0.109974697771', 'stock': 'ABC'},
+      {'top_ask': {'price': 121.68, 'size': 4}, 'timestamp': '2019-02-11 22:06:30.572453', 'top_bid': {'price': 117.87, 'size': 81}, 'id': '0.109974697771', 'stock': 'DEF'}
+    ]
+    """ ------------ Add the assertion below ------------ """
+
+  def test_getDataPoint_calculatePriceBidGreaterThanAsk(self):
+    quotes = [
+      {'top_ask': {'price': 119.2, 'size': 36}, 'timestamp': '2019-02-11 22:06:30.572453', 'top_bid': {'price': 120.48, 'size': 109}, 'id': '0.109974697771', 'stock': 'ABC'},
+      {'top_ask': {'price': 121.68, 'size': 4}, 'timestamp': '2019-02-11 22:06:30.572453', 'top_bid': {'price': 117.87, 'size': 81}, 'id': '0.109974697771', 'stock': 'DEF'}
+    ]
+    """ ------------ Add the assertion below ------------ """
+
+
+  """ ------------ Add more unit tests ------------ """
+
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/server.py b/server3.py
similarity index 100%
rename from server.py
rename to server3.py