Sigmund Cherem
912005267d
Change-Id: I46be49b2effec3e38a3dc44cd45cfe736f77fa78 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/182680 Commit-Queue: Sigmund Cherem <sigmund@google.com> Reviewed-by: Joshua Litt <joshualitt@google.com> Reviewed-by: Nicholas Shahan <nshahan@google.com> Reviewed-by: Stephen Adams <sra@google.com>
87 lines
1.9 KiB
Dart
87 lines
1.9 KiB
Dart
// Copyright (c) 2011, 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 "native_testing.dart";
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// Test for correct simple is-checks on hidden native classes.
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abstract class J {}
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abstract class I extends J {
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I read();
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write(covariant I x);
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}
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// Native implementation.
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@Native("A")
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class A implements I {
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// The native class accepts only other native instances.
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A read() native;
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write(A x) native;
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}
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@Native("B")
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class B extends A {}
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makeA() native;
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makeB() native;
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void setup() {
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JS('', r"""
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(function(){
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// This code is inside 'setup' and so not accessible from the global scope.
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function inherits(child, parent) {
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if (child.prototype.__proto__) {
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child.prototype.__proto__ = parent.prototype;
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} else {
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function tmp() {};
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tmp.prototype = parent.prototype;
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child.prototype = new tmp();
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child.prototype.constructor = child;
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}
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}
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function A(){}
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function B(){}
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inherits(B, A);
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A.prototype.read = function() { return this._x; };
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A.prototype.write = function(x) { this._x = x; };
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self.makeA = function(){return new A()};
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self.makeB = function(){return new B()};
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self.nativeConstructor(A);
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self.nativeConstructor(B);
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})()""");
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applyTestExtensions(['A', 'B']);
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}
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class C {}
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main() {
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nativeTesting();
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setup();
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var a1 = makeA();
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var b1 = makeB();
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var ob = new Object();
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Expect.isFalse(ob is J);
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Expect.isFalse(ob is I);
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Expect.isFalse(ob is A);
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Expect.isFalse(ob is B);
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Expect.isFalse(ob is C);
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// Use b1 first to prevent a1 is checks patching the A prototype.
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Expect.isTrue(b1 is J);
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Expect.isTrue(b1 is I);
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Expect.isTrue(b1 is A);
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Expect.isTrue(b1 is B);
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Expect.isTrue(b1 is! C);
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Expect.isTrue(a1 is J);
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Expect.isTrue(a1 is I);
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Expect.isTrue(a1 is A);
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Expect.isTrue(a1 is! B);
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Expect.isTrue(a1 is! C);
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}
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