dart-sdk/tests/language_2/implicit_downcast_during_assert_initializer_test.dart
Paul Berry b47ef6bdeb Insert implicit downcasts for the conditions of assert statements.
Tests that have begun failing due to this change are marked with a
reference to issue #31402.

Change-Id: Ife1531ee029dda32e91f7aa0d5720353de7996d5
Reviewed-on: https://dart-review.googlesource.com/23726
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
2017-11-26 17:06:00 +00:00

26 lines
736 B
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.
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 {}
}