blob: 63e7d91f818f184aaefe8fff614a76a035ad9cea [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.
// @dart = 2.9
import "package:expect/expect.dart";
var myIdentical = identical;
class Point {
num x, y;
Point(this.x, this.y);
}
main() {
// int.
Expect.isTrue(myIdentical(42, 42));
Expect.isFalse(myIdentical(42, 41));
// double.
Expect.isTrue(myIdentical(42.0, 42.0));
Expect.isFalse(myIdentical(42.0, 41.0));
// Mint (2^45).
Expect.isTrue(myIdentical(35184372088832, 35184372088832));
Expect.isFalse(myIdentical(35184372088832, 35184372088831));
// Different types.
Expect.isFalse(myIdentical("hello", 41));
// Points.
var p = new Point(1, 1);
var q = new Point(1, 1);
Expect.isFalse(myIdentical(p, q));
// Strings.
var a = "hello";
var b = "hello";
// Identical strings are coalesced into single instances.
Expect.isTrue(myIdentical(a, b));
// Null handling.
Expect.isFalse(myIdentical(42, null));
Expect.isTrue(myIdentical(null, null));
}