add a test.
add a test.


Former-commit-id: a45c92539bb4016446efac9ec871948d8c71399f [formerly 4a529e1a5f80ad84d13d6c7b83c589ac80d027d5]
Former-commit-id: 9caa990c38531f935063bbd2509725690cf04e54
darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide