// 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('Can hit test flex children of stacks', () {
    testWidgets((WidgetTester tester) {
      bool didReceiveTap = false;
      tester.pumpWidget(
        new Container(
          decoration: const BoxDecoration(
            backgroundColor: const Color(0xFF00FF00)
          ),
          child: new Stack(
            children: <Widget>[
              new Positioned(
                top: 10.0,
                left: 10.0,
                child: new Column(
                  children: <Widget>[
                    new GestureDetector(
                      onTap: () {
                        didReceiveTap = true;
                      },
                      child: new Container(
                        decoration: const BoxDecoration(
                          backgroundColor: const Color(0xFF0000FF)
                        ),
                        width: 100.0,
                        height: 100.0,
                        child: new Center(
                          child: new Text('X')
                        )
                      )
                    )
                  ]
                )
              )
            ]
          )
        )
      );

      tester.tap(find.text('X'));
      expect(didReceiveTap, isTrue);
    });
  });

  test('Row, Column and FlexJustifyContent.collapse', () {
    final Key flexKey = new Key('flexKey');

    // Row without mainAxisAlignment: FlexJustifyContent.collapse
    testWidgets((WidgetTester tester) {
      tester.pumpWidget(new Center(
        child: new Row(
          children: <Widget>[
            new Container(width: 10.0, height: 100.0),
            new Container(width: 30.0, height: 100.0)
          ],
          key: flexKey
        )
      ));
      RenderBox renderBox = tester.renderObjectOf(find.byKey(flexKey));
      expect(renderBox.size.width, equals(800.0));
      expect(renderBox.size.height, equals(100.0));

      // Row with mainAxisAlignment: FlexJustifyContent.collapse
      tester.pumpWidget(new Center(
        child: new Row(
          children: <Widget>[
            new Container(width: 10.0, height: 100.0),
            new Container(width: 30.0, height: 100.0)
          ],
          key: flexKey,
          mainAxisAlignment: MainAxisAlignment.collapse
        )
      ));
      renderBox = tester.renderObjectOf(find.byKey(flexKey));
      expect(renderBox.size.width, equals(40.0));
      expect(renderBox.size.height, equals(100.0));
    });

    // Column without mainAxisAlignment: FlexJustifyContent.collapse
    testWidgets((WidgetTester tester) {
      tester.pumpWidget(new Center(
        child: new Column(
          children: <Widget>[
            new Container(width: 100.0, height: 100.0),
            new Container(width: 100.0, height: 150.0)
          ],
          key: flexKey
        )
      ));
      RenderBox renderBox = tester.renderObjectOf(find.byKey(flexKey));
      expect(renderBox.size.width, equals(100.0));
      expect(renderBox.size.height, equals(600.0));

      // Column with mainAxisAlignment: FlexJustifyContent.collapse
      tester.pumpWidget(new Center(
        child: new Column(
          children: <Widget>[
            new Container(width: 100.0, height: 100.0),
            new Container(width: 100.0, height: 150.0)
          ],
          key: flexKey,
          mainAxisAlignment: MainAxisAlignment.collapse
        )
      ));
      renderBox = tester.renderObjectOf(find.byKey(flexKey));
      expect(renderBox.size.width, equals(100.0));
      expect(renderBox.size.height, equals(250.0));
    });
  });

  test('Can layout at zero size', () {
    final Key childKey = new Key('childKey');

    testWidgets((WidgetTester tester) {
      tester.pumpWidget(new Center(
        child: new Container(
          width: 0.0,
          height: 0.0,
          child:  new Column(
            children: <Widget>[
              new Container(
                key: childKey,
                width: 100.0,
                height: 100.0
              )
            ],
            mainAxisAlignment: MainAxisAlignment.collapse
          )
        )
      ));

      RenderBox renderBox = tester.renderObjectOf(find.byKey(childKey));
      expect(renderBox.size.width, equals(0.0));
      expect(renderBox.size.height, equals(100.0));

      tester.pumpWidget(new Center(
        child: new Container(
          width: 0.0,
          height: 0.0,
          child:  new Row(
            children: <Widget>[
              new Container(
                key: childKey,
                width: 100.0,
                height: 100.0
              )
            ],
            mainAxisAlignment: MainAxisAlignment.collapse
          )
        )
      ));

      renderBox = tester.renderObjectOf(find.byKey(childKey));
      expect(renderBox.size.width, equals(100.0));
      expect(renderBox.size.height, equals(0.0));
    });
  });
}
