hausner@google.com
392db8d312
When converting null to a boolean value, throw an AssertionError rather than a TypeError. This is the same change as r42145, with added co19 status updates. R=srdjan@google.com Review URL: https://codereview.chromium.org//779253003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@42170 260f80e4-7a28-3924-810f-c04153c831b5
54 lines
1.2 KiB
Dart
54 lines
1.2 KiB
Dart
// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import "package:expect/expect.dart";
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bool typeChecksEnabled() {
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try {
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var i = 42;
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String s = i;
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} on TypeError catch (e) {
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return true;
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}
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return false;
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}
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bool assertionsEnabled() {
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try {
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assert(false);
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return false;
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} on AssertionError catch (e) {
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return true;
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}
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return false;
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}
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final bool typeChecksOn = typeChecksEnabled();
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final bool assertionsOn = assertionsEnabled();
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ifExpr(e) { if (e) return true; else return false; }
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bool ifNull() => ifExpr(null);
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bool ifString() => ifExpr("true");
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main() {
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print("type checks: $typeChecksOn");
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print("assertions: $assertionsOn");
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if (typeChecksOn) {
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Expect.throws(ifNull, (e) => e is AssertionError);
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}
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if (assertionsOn && !typeChecksOn) {
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Expect.throws(ifNull, (e) => e is AssertionError);
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}
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if (!typeChecksOn && !assertionsOn) {
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Expect.identical(false, ifNull());
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}
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if (!typeChecksOn) {
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Expect.identical(false, ifString());
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}
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if (typeChecksOn) {
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Expect.throws(ifString, (e) => e is TypeError);
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}
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} |