Bob Nystrom
14011f47e3
They're back from the grave, and ready to party! Change-Id: I088134a9be7ecabf1fbf751c015a656a15cabff9 Reviewed-on: https://dart-review.googlesource.com/12821 Commit-Queue: Bob Nystrom <rnystrom@google.com> Reviewed-by: William Hesse <whesse@google.com>
54 lines
1.6 KiB
Dart
54 lines
1.6 KiB
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.
|
|
|
|
library checked_mode_helper;
|
|
|
|
import 'package:expect/expect.dart';
|
|
|
|
/// Returns `true` if the program is running in checked mode.
|
|
bool inCheckedMode() {
|
|
try {
|
|
var i = 42;
|
|
String s = i;
|
|
} on TypeError catch (e) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/// Checks that a dynamic type error is thrown if and only if [f] is executed in
|
|
/// checked mode and [expectTypeError] is `true`.
|
|
void testDynamicTypeError(bool expectTypeError, f(), [String message]) {
|
|
if (expectTypeError) {
|
|
checkDynamicTypeError(f, message);
|
|
} else {
|
|
checkNoDynamicTypeError(f, message);
|
|
}
|
|
}
|
|
|
|
/// Checks that a dynamic type error is thrown if and only if [f] is executed in
|
|
/// checked mode.
|
|
void checkDynamicTypeError(f(), [String message]) {
|
|
message = message != null ? ': $message' : '';
|
|
try {
|
|
f();
|
|
Expect.isFalse(
|
|
inCheckedMode(), 'Missing type error in checked mode$message.');
|
|
} on TypeError catch (e) {
|
|
Expect.isTrue(inCheckedMode(), 'Unexpected type error in production mode.');
|
|
}
|
|
}
|
|
|
|
/// Checks that no dynamic type error is thrown when [f] is executed regardless
|
|
/// of execution mode.
|
|
void checkNoDynamicTypeError(f(), [String message]) {
|
|
message = message != null ? ': $message' : '';
|
|
try {
|
|
f();
|
|
} on TypeError catch (e) {
|
|
String mode = inCheckedMode() ? 'checked mode' : 'production mode';
|
|
Expect.fail('Unexpected type error in $mode$message.');
|
|
}
|
|
}
|