dart-sdk/tests/language/null_to_string2_test.dart

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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.
// Test correct handling of NULL object in invocation and implicit closures.
import "package:expect/expect.dart";
class A {}
A foo() => null;
main() {
A nullObj = foo();
var x = nullObj.toString();
Expect.isTrue(x is String);
var y = nullObj.toString;
Expect.isNotNull(y);
}