blob: 690885441849e1422761bb8e71279e48fd9a87de [file] [log] [blame]
// Copyright (c) 2012, 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.
import "package:expect/expect.dart";
main() {
Expect.isFalse(null is Object);
Expect.isTrue(null is Object?);
Expect.isTrue(null is Null);
Expect.isFalse(null is int);
Expect.isFalse(null is bool);
Expect.isFalse(null is num);
Expect.isFalse(null is String);
Expect.isFalse(null is List);
Expect.isFalse(null is Expect);
test(null);
Expect.isFalse(1 is Null);
Expect.isFalse("1" is Null);
Expect.isFalse(true is Null);
Expect.isFalse(false is Null);
Expect.isFalse(new Object() is Null);
testNegative(1);
testNegative("1");
testNegative(true);
testNegative(false);
testNegative(new Object());
}
test(n) {
// Test where the argument is not a compile-time constant.
Expect.isFalse(n is Object);
Expect.isTrue(n is Object?);
Expect.isTrue(n is Null);
Expect.isFalse(n is int);
Expect.isFalse(n is bool);
Expect.isFalse(n is num);
Expect.isFalse(n is String);
Expect.isFalse(n is List);
Expect.isFalse(n is Expect);
}
testNegative(n) {
Expect.isFalse(n is Null);
}