blob: 6de841e987b6a7bef448d3168fa38105d6aa93ee [file] [log] [blame]
// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:ui';
import 'package:litetest/litetest.dart';
typedef StringFunction = String Function();
typedef IntFunction = int Function();
String top() => 'top';
class Foo {
const Foo();
static int getInt() => 1;
double getDouble() => 1.0;
}
const Foo foo = Foo();
void main() {
test('PluginUtilities Callback Handles', () {
// Top level callback.
final CallbackHandle hTop = PluginUtilities.getCallbackHandle(top)!;
expect(hTop, notEquals(0));
expect(PluginUtilities.getCallbackHandle(top), hTop);
final StringFunction topClosure = PluginUtilities.getCallbackFromHandle(hTop)! as StringFunction;
expect(topClosure(), 'top');
// Static method callback.
final CallbackHandle hGetInt = PluginUtilities.getCallbackHandle(Foo.getInt)!;
expect(hGetInt, notEquals(0));
expect(PluginUtilities.getCallbackHandle(Foo.getInt), hGetInt);
final IntFunction getIntClosure = PluginUtilities.getCallbackFromHandle(hGetInt)! as IntFunction;
expect(getIntClosure(), 1);
// Instance method callbacks cannot be looked up.
const Foo foo = Foo();
expect(PluginUtilities.getCallbackHandle(foo.getDouble), isNull);
// Anonymous closures cannot be looked up.
final Function anon = (int a, int b) => a + b; // ignore: prefer_function_declarations_over_variables
expect(PluginUtilities.getCallbackHandle(anon), isNull);
});
}