blob: 823861cf5357d68b5f206878566e210a55e6a894 [file] [log] [blame]
// Copyright (c) 2021, 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.
// Tests behavior of external extension members, which are routed to js_util
// calls by a CFE transformation.
@JS()
library external_extension_members_test;
import 'package:js/js.dart';
import 'package:js/js_util.dart' as js_util;
import 'package:expect/minitest.dart';
@JS()
external void eval(String code);
@JS()
class Foo {
external Foo(int a);
}
extension FooExt on Foo {
external var field;
external final finalField;
@JS('fieldAnnotation')
external var annotatedField;
external get getter;
@JS('getterAnnotation')
external get annotatedGetter;
external set setter(_);
@JS('setterAnnotation')
external set annotatedSetter(_);
external num getField();
@JS('toString')
external String extToString();
external dynamic getFirstEl(list);
external num sumFn(a, b);
@JS('sumFn')
external num otherSumFn(a, b);
}
@JS('module.Bar')
class Bar {
external Bar(int a);
}
extension BarExt on Bar {
@JS('field')
external var barField;
}
void main() {
eval(r"""
function Foo(a) {
this.field = a;
this.fieldAnnotation = a;
this.finalField = a;
this.getter = a;
this.getterAnnotation = a;
}
Foo.prototype.toString = function() {
return "Foo: " + this.field;
}
Foo.prototype.getField = function() {
return this.field;
}
Foo.prototype.getFirstEl = function(list) {
return list[0];
}
Foo.prototype.sumFn = function(a, b) {
return a + b;
}
var module = {Bar: Foo};
""");
test('fields', () {
var foo = Foo(42);
// field getters
expect(foo.field, equals(42));
expect(foo.finalField, equals(42));
expect(foo.annotatedField, equals(42));
// field setters
foo.field = 'squid';
expect(foo.field, equals('squid'));
foo.annotatedField = 'octopus';
expect(foo.annotatedField, equals('octopus'));
js_util.setProperty(foo, 'fieldAnnotation', 'clownfish');
expect(foo.annotatedField, equals('clownfish'));
});
test('getters', () {
var foo = Foo(42);
expect(foo.getter, equals(42));
expect(foo.annotatedGetter, equals(42));
js_util.setProperty(foo, 'getterAnnotation', 'eel');
expect(foo.annotatedGetter, equals('eel'));
});
test('setters', () {
var foo = Foo(42);
foo.setter = 'starfish';
expect(js_util.getProperty(foo, 'setter'), equals('starfish'));
foo.annotatedSetter = 'whale';
expect(js_util.getProperty(foo, 'setterAnnotation'), equals('whale'));
});
test('methods', () {
var foo = Foo(42);
expect(foo.getField(), equals(42));
expect(foo.extToString(), equals('Foo: 42'));
expect(foo.getFirstEl([1, 2, 3]), equals(1));
expect(foo.sumFn(2, 3), equals(5));
expect(foo.otherSumFn(10, 5), equals(15));
});
test('module class', () {
var bar = Bar(5);
expect(js_util.getProperty(bar, 'fieldAnnotation'), equals(5));
expect(bar.barField, equals(5));
expect(js_util.getProperty(bar, 'field'), equals(5));
bar.barField = 10;
expect(js_util.getProperty(bar, 'fieldAnnotation'), equals(5));
expect(js_util.getProperty(bar, 'field'), equals(10));
});
}