blob: c1a57f0ee832d0ebafd6d9f9b5f221bf822e9117 [file] [log] [blame]
// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import "package:expect/expect.dart";
// Test that optimized 'null + x' and slow path '+' produce the same error.
// They don't, sometimes we generate null.$add, sometimes JSNull_methods.$add.
confuse(x) => x;
void check2(String name, name1, f1, name2, f2) {
Error? trap(part, f) {
try {
} on Error catch (e) {
return e;
}'should throw: $name.$part');
var e1 = trap(name1, f1);
var e2 = trap(name2, f2);
var s1 = '$e1';
var s2 = '$e2';
Expect.equals(s1, s2, '\n $name.$name1: "$s1"\n $name.$name2: "$s2"\n');
void check(String name, f1, f2, [f3, f4, f5, f6]) {
check2(name, 'f1', f1, 'f2', f2);
if (f3 != null) check2(name, 'f1', f1, 'f3', f3);
if (f4 != null) check2(name, 'f1', f1, 'f4', f4);
if (f5 != null) check2(name, 'f1', f1, 'f5', f5);
if (f6 != null) check2(name, 'f1', f1, 'f6', f6);
class NullPlusInt {
static f1() {
return confuse(null) + confuse(1);
static f2() {
return confuse(null) + 1;
static f3() {
return (confuse(null) as int) + confuse(1);
static f4() {
return (confuse(null) as int) + 1;
static f5() {
var a = null;
return a + confuse(1);
static f6() {
var a = null;
return a + 1;
static test() {
// Sometimes we generate null.$add, sometimes JSNull_methods.$add. The best
// we can do is check there is an error.
check('NullPlusInt', f1, f1);
check('NullPlusInt', f2, f2);
check('NullPlusInt', f3, f3);
check('NullPlusInt', f4, f4);
check('NullPlusInt', f5, f5);
check('NullPlusInt', f6, f6);
main() {