// Copyright 2015 The Chromium 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 'package:flutter_test/flutter_test.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/widgets.dart';
import 'package:test/test.dart';

void main() {
  test('Comparing coordinates', () {
    testElementTree((ElementTreeTester tester) {
      Key keyA = new GlobalKey();
      Key keyB = new GlobalKey();

      tester.pumpWidget(
        new Stack(
          children: <Widget>[
            new Positioned(
              top: 100.0,
              left: 100.0,
              child: new SizedBox(
                key: keyA,
                width: 10.0,
                height: 10.0
              )
            ),
            new Positioned(
              left: 100.0,
              top: 200.0,
              child: new SizedBox(
                key: keyB,
                width: 20.0,
                height: 10.0
              )
            ),
          ]
        )
      );

      RenderBox boxA = tester.findElementByKey(keyA).renderObject;
      expect(boxA.localToGlobal(const Point(0.0, 0.0)), equals(const Point(100.0, 100.0)));

      RenderBox boxB = tester.findElementByKey(keyB).renderObject;
      expect(boxB.localToGlobal(const Point(0.0, 0.0)), equals(const Point(100.0, 200.0)));
      expect(boxB.globalToLocal(const Point(110.0, 205.0)), equals(const Point(10.0, 5.0)));
    });
  });
}
