Create 'math_mutiply' endpoints

main.py

@@ -30,7 +30,6 @@ class DoubleList(Resource):
     def put(self):
         return ms.double_list(my_list)
 
-
 @api.route('/answer')
 @api.doc(description='The Answer to the Ultimate Question of Life, the Universe, and Everything.')
 class TheAnswer(Resource):
@@ -66,6 +65,12 @@ def put(self, integer, position):
         my_list.insert(position, integer)
         return my_list
 
+@math_ns.route('/multiply/<int:integer>')
+@math_ns.doc(params={'integer': 'Integer value.'}, description='Multiply list by an integer.')
+class MultiplyList(Resource):
+    def put(self, integer):
+        return ms.multiply_list(my_list, integer)
+
 port = os.getenv('PORT', '5000')
 if __name__ == "__main__":
-    app.run(host='0.0.0.0', port=int(port))
+    app.run(host='0.0.0.0', port=int(port)) 

src/math_services.py

@@ -1,19 +1,22 @@
-def double_list(integer_list):
+def multiply_list(integer_list, integer_value):
     """
-    Multiplies every integer in the list by 2.
+    Multiply every integer in the list by an integer value.
 
     Receives
     --------
     integer_list : list
-        List of integer values.
+        List of integers.
+
+    integer_value : integer
+        Integer value by which every element should be multiplied.
 
     Returns
     -------
-    doubled_list : list
-        List of integer values multiplied by 2.
+    multiplied_list : list
+        List of integers multiplied by input value.
     """
 
-    doubled_list = [2*x for x in integer_list]
+    multiplied_list = [integer_value*x for x in integer_list]
     integer_list.clear()
-    integer_list.extend(doubled_list)
-    return integer_list
+    integer_list.extend(multiplied_list)
+    return integer_list

test/math_test.py

@@ -7,3 +7,15 @@ def test_double_list():
     assert ms.double_list([2]) == [4]
     assert ms.double_list([1, 2]) == [2, 4]
     assert ms.double_list([1, 2, 3]) == [2, 4, 6]
+
+def test_multiply_list():
+    assert ms.multiply_list([], 1) == []
+    assert ms.multiply_list([1], 0) == [0]
+    assert ms.multiply_list([1], 1) == [1]
+    assert ms.multiply_list([1], 2) == [2]
+    assert ms.multiply_list([1, 2], 0) == [0, 0]
+    assert ms.multiply_list([1, 2], 1) == [1, 2]
+    assert ms.multiply_list([1, 2], 2) == [2, 4]
+    assert ms.multiply_list([1, 2, 3], 0) == [0, 0, 0]
+    assert ms.multiply_list([1, 2, 3], 1) == [1, 2, 3]
+    assert ms.multiply_list([1, 2, 3], 2) == [2, 4, 6]