| // 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. |
| |
| class C { |
| C.oneArg(Object x) : assert(x); |
| C.twoArgs(Object x, Object y) : assert(x, y); |
| } |
| |
| void main() { |
| Object b = true; |
| new C.oneArg(b); // No error |
| assert(b, 'should not fail'); // No error |
| try { |
| new C.twoArgs(false, b); // Type is ok |
| } on AssertionError {} |
| b = new Object(); |
| try { |
| new C.oneArg(b); |
| assert(false, 'Did not throw'); |
| } on TypeError {} |
| try { |
| new C.twoArgs(b, 'type error should occur before assert check'); |
| assert(false, 'Did not throw'); |
| } on TypeError {} |
| } |