fixed find maxima function first 3

hands_on/first/test_first.py

@@ -1,6 +1,16 @@
+from first import times_3
+
 def test_times_3_integer():
     pass
 
 
 def test_times_3_string():
     pass
+
+def test_times_3_list():
+    value = [1]
+    expected = [1, 1, 1]
+
+    result = times_3(value)
+
+    assert result == expected