Foo.test

# Copyright (c) Facebook, Inc. and its affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
#
-u Foo.foo
===
 module Foo where
 
 foo :: [Int] -> [Int]
 foo xs = xs ++ [1,2, 3]
 
 bar :: [Int]
-bar = foo [4,5,6]
+bar = [4,5,6] ++ [1,2, 3]