dart-sdk/tests/language_2/bug31436_test.dart
Jenny Messerly 3360abe2f2 fix test for #31436 to pass on Dart 2 impls
Change-Id: I8dbd313d455f2a19a0f839de3b831c68dee1a520
Reviewed-on: https://dart-review.googlesource.com/35462
Reviewed-by: Paul Berry <paulberry@google.com>
Commit-Queue: Jenny Messerly <jmesserly@google.com>
2018-01-17 23:53:26 +00:00

68 lines
1.8 KiB
Dart

// Copyright (c) 2017, 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";
void block_test() {
List<Object> Function() g;
g = () {
return [3];
};
assert(g is List<Object> Function());
assert(g is! List<int> Function());
g().add("hello"); // No runtime error
List<int> l = [3];
g = () {
return l;
};
assert(g is List<Object> Function());
assert(g is List<int> Function());
Expect.throwsTypeError(() {
g().add("hello"); // runtime error
});
Object o = l;
g = () {
return o;
}; // No implicit downcast on the assignment, implicit downcast on the return
assert(g is List<Object> Function());
assert(g is! List<int> Function());
assert(g is Object Function());
g(); // No runtime error;
o = 3;
Expect.throwsTypeError(() {
g(); // Failed runtime cast on the return type of f
});
}
void arrow_test() {
List<Object> Function() g;
g = () => [3];
assert(g is List<Object> Function());
assert(g is! List<int> Function());
g().add("hello"); // No runtime error
List<int> l = [3];
g = () => l;
assert(g is List<Object> Function());
assert(g is List<int> Function());
Expect.throwsTypeError(() {
g().add("hello"); // runtime error
});
Object o = l;
g = () =>
o; // No implicit downcast on the assignment, implicit downcast on the return
assert(g is List<Object> Function());
assert(g is! List<int> Function());
assert(g is Object Function());
g(); // No runtime error;
o = 3;
Expect.throwsTypeError(() {
g(); // Failed runtime cast on the return type of f
});
}
main() {
block_test();
arrow_test();
}