dart-sdk/tests/dart2js/generic_type_error_message_test.dart
Joshua Litt f9f1ca6171 [dart2js] Create tests/dart2js for nnbd.
Change-Id: Ib8721cf976803d8d1b9d723b7e691e344c768b67
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/149881
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Joshua Litt <joshualitt@google.com>
2020-06-09 16:53:15 +00:00

42 lines
1.1 KiB
Dart

// Copyright (c) 2018, 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.
// dart2jsOptions=--strong
import 'package:expect/expect.dart';
class Foo<T extends num> {}
class Bar<T extends num> {}
class Baz<T extends num> {}
@pragma('dart2js:disableFinal')
main() {
test(new Foo(), Foo, expectTypeArguments: false);
test(new Bar() as Bar<num>, Bar, expectTypeArguments: false);
Baz<num> b = new Baz();
dynamic c = b;
test(c as Baz<num>, Baz, expectTypeArguments: true);
}
void test(dynamic object, Type type, {bool expectTypeArguments}) {
bool caught = false;
try {
print(type);
object as List<String>;
} catch (e) {
String expected = '$type';
if (!expectTypeArguments) {
expected = expected.substring(0, expected.indexOf('<'));
}
expected = '$expected';
Expect.isTrue(e.toString().contains(expected),
'Expected "$expected" in the message: $e');
caught = true;
print(e);
}
Expect.isTrue(caught);
}