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sdk/tests/language/mixin/this_use_test.dart
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Robert Nystrom d839eb7bf9 Migrate language_2/mixin to NNBD.
Change-Id: I4501e9a9d2d958cecf21460b628d2ac50a5135bc
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/149492
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Erik Ernst <eernst@google.com>
Commit-Queue: Bob Nystrom <rnystrom@google.com>
2020-06-03 00:05:18 +00:00

31 lines
621 B
Dart

// Copyright (c) 2013, 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 that [:this:] in a class A used as a mixin in class D knows it can be an
// instance of D.
import "package:expect/expect.dart";
class A {
foo() => bar(); // Implicit use of [:this:]
bar() => 42;
}
class B {}
class C = B with A;
class D extends C {
bar() => 54;
}
class E extends A {
bar() => 68;
}
main() {
Expect.equals(54, new D().foo());
Expect.equals(68, new E().foo());
}