pkg/compiler/test/codegen/late_field_redundancy_test.dart

// Copyright (c) 2022, 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/async_helper.dart';
import 'package:expect/expect.dart';
import '../helpers/compiler_helper.dart';

const String TEST = r"""
class Foo {
  late int x;
}

void entry() {
  final foo = Foo();
  foo.x = 42;
  test(foo);
}

@pragma('dart2js:noInline')
void test(Foo foo) {
  final a = foo.x;
  final b = foo.x;
  print([a, b]);
}
""";

void main() {
  asyncTest(() async {
    await compile(
      TEST,
      entry: 'entry',
      methodName: 'test',
      disableTypeInference: false,
      disableInlining: false,
      check: (String generated) {
        RegExp regexp = RegExp(r'=== \$');
        Expect.equals(1, regexp.allMatches(generated).length);
      },
    );
  });
}