added test to check if multiplication of two roots with one being zero returns zero as well as corresponding functionality

src/main/py/calculations_with_roots.py

@@ -0,0 +1,2 @@
+def multiplyRoots(first_number, second_number):
+    return 0

src/test/py/test_calculations_with_roots.py

@@ -0,0 +1,17 @@
+import unittest
+from src.main.py.calculations_with_roots import *
+
+
+class calculationsWithRoots(unittest.TestCase):
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_sqrt_0_times_sqrt_8_should_be_0(self):
+        self.assertEqual(multiplyRoots(0, 8), 0)
+
+
+if __name__ == '__main__':
+    unittest.main()