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49 lines
1.5 KiB
Dart
49 lines
1.5 KiB
Dart
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// @dart = 2.6
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import 'dart:ui';
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import 'package:test/test.dart';
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String top() => 'top';
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class Foo {
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const Foo();
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static int getInt() => 1;
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double getDouble() => 1.0;
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}
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const Foo foo = Foo();
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void main() {
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test('PluginUtilities Callback Handles', () {
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// Top level callback.
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final CallbackHandle hTop = PluginUtilities.getCallbackHandle(top);
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expect(hTop, isNotNull);
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expect(hTop, isNot(0));
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expect(PluginUtilities.getCallbackHandle(top), hTop);
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final Function topClosure = PluginUtilities.getCallbackFromHandle(hTop);
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expect(topClosure, isNotNull);
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expect(topClosure(), 'top');
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// Static method callback.
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final CallbackHandle hGetInt = PluginUtilities.getCallbackHandle(Foo.getInt);
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expect(hGetInt, isNotNull);
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expect(hGetInt, isNot(0));
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expect(PluginUtilities.getCallbackHandle(Foo.getInt), hGetInt);
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final Function getIntClosure = PluginUtilities.getCallbackFromHandle(hGetInt);
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expect(getIntClosure, isNotNull);
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expect(getIntClosure(), 1);
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// Instance method callbacks cannot be looked up.
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const Foo foo = Foo();
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expect(PluginUtilities.getCallbackHandle(foo.getDouble), isNull);
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// Anonymous closures cannot be looked up.
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final Function anon = (int a, int b) => a + b;
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expect(PluginUtilities.getCallbackHandle(anon), isNull);
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});
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}
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