| // 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"; |
| |
| class ExpandoTest { |
| static Expando<int> visits; |
| |
| static testMain() { |
| visits = new Expando<int>('visits'); |
| var legal = [ |
| new Object(), |
| new List(), |
| [1, 2, 3], |
| const [1, 2, 3], |
| new Map(), |
| {'x': 1, 'y': 2}, |
| const {'x': 1, 'y': 2}, |
| new Expando(), |
| new Expando('horse') |
| ]; |
| for (var object in legal) { |
| testNamedExpando(object); |
| testUnnamedExpando(object); |
| } |
| for (var object in legal) { |
| Expect.equals(2, visits[object], "$object"); |
| } |
| testIllegal(); |
| testIdentity(); |
| } |
| |
| static visit(object) { |
| int count = visits[object]; |
| count = (count == null) ? 1 : count + 1; |
| visits[object] = count; |
| } |
| |
| static testNamedExpando(object) { |
| Expando<int> expando = new Expando<int>('myexpando'); |
| Expect.equals('myexpando', expando.name); |
| Expect.isTrue(expando.toString().startsWith('Expando:myexpando')); |
| testExpando(expando, object); |
| } |
| |
| static testUnnamedExpando(object) { |
| Expando<int> expando = new Expando<int>(); |
| Expect.isNull(expando.name); |
| Expect.isTrue(expando.toString().startsWith('Expando:')); |
| testExpando(expando, object); |
| } |
| |
| static testExpando(Expando<int> expando, object) { |
| visit(object); |
| |
| Expect.isNull(expando[object]); |
| expando[object] = 42; |
| Expect.equals(42, expando[object]); |
| expando[object] = null; |
| Expect.isNull(expando[object]); |
| |
| Expando<int> alternative = new Expando('myexpando'); |
| Expect.isNull(alternative[object]); |
| alternative[object] = 87; |
| Expect.isNull(expando[object]); |
| expando[object] = 99; |
| Expect.equals(99, expando[object]); |
| Expect.equals(87, alternative[object]); |
| } |
| |
| static testIllegal() { |
| Expando<int> expando = new Expando<int>(); |
| Expect.throwsArgumentError(() => expando[null], "null"); |
| Expect.throwsArgumentError(() => expando['string'], "'string'"); |
| Expect.throwsArgumentError(() => expando[42], "42"); |
| Expect.throwsArgumentError(() => expando[42.87], "42.87"); |
| Expect.throwsArgumentError(() => expando[true], "true"); |
| Expect.throwsArgumentError(() => expando[false], "false"); |
| } |
| |
| static testIdentity() { |
| // Expando only depends on identity of object. |
| Expando<int> expando = new Expando<int>(); |
| var m1 = new Mutable(1); |
| var m2 = new Mutable(7); |
| var m3 = new Mutable(13); |
| expando[m1] = 42; |
| Expect.equals(42, expando[m1]); |
| m1.id = 37; |
| Expect.equals(42, expando[m1]); |
| expando[m2] = 37; |
| expando[m3] = 10; |
| m3.id = 1; |
| Expect.equals(42, expando[m1]); |
| Expect.equals(37, expando[m2]); |
| Expect.equals(10, expando[m3]); |
| } |
| } |
| |
| main() => ExpandoTest.testMain(); |
| |
| class Mutable { |
| int id; |
| Mutable(this.id); |
| int get hashCode => id; |
| bool operator ==(other) => other is Mutable && other.id == id; |
| } |