Files
sdk/pkg/compiler/test/codegen/generic_method_test.dart
T
Nate Biggs 1add1a8522 [dart2js] Migrate test/codegen for null safety migration.
This change seems fairly large but most of the files only contain a change to remove the language comment.

Change-Id: I36d7fcc327172101a61ff97b7d49b168911b6e01
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/279820
Reviewed-by: Mayank Patke <fishythefish@google.com>
2023-02-02 04:21:58 +00:00

43 lines
1.2 KiB
Dart

// Copyright (c) 2012, 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.
// This test exercises a sound null safety issue that arose in the compiler by
// allocating an argument slot for a type parameter that was determined to be
// unused. This resulted in `null` being added to a list that wouldn't otherwise
// need to support null.
import 'package:expect/expect.dart';
import 'package:async_helper/async_helper.dart';
import '../helpers/compiler_helper.dart';
const String TEST = r"""
class A {
Object value;
@pragma('dart2js:tryInline')
@pragma('dart2js:as:trust')
T foo<T>() => value as T;
}
void main () {
final a = A();
a.value = 'val';
a.foo();
}
""";
main() {
test() async {
await compile(TEST, enableTypeAssertions: true, disableInlining: false,
check: (generated) {
// 'foo' should be inlined and no type arg should be needed.
Expect.isFalse(generated.contains('foo'));
});
}
asyncTest(() async {
print('--test from kernel------------------------------------------------');
await test();
});
}