// 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/material.dart';
import 'package:test/test.dart';

class TestInherited extends InheritedWidget {
  TestInherited({ Key key, Widget child, this.shouldNotify: true })
    : super(key: key, child: child);

  final bool shouldNotify;

  @override
  bool updateShouldNotify(InheritedWidget oldWidget) {
    return shouldNotify;
  }
}

void main() {
  test('Inherited notifies dependents', () {
    testWidgets((WidgetTester tester) {
      List<TestInherited> log = <TestInherited>[];

      Builder builder = new Builder(
        builder: (BuildContext context) {
          log.add(context.inheritFromWidgetOfExactType(TestInherited));
          return new Container();
        }
      );

      TestInherited first = new TestInherited(child: builder);
      tester.pumpWidget(first);

      expect(log, equals([first]));

      TestInherited second = new TestInherited(child: builder, shouldNotify: false);
      tester.pumpWidget(second);

      expect(log, equals([first]));

      TestInherited third = new TestInherited(child: builder, shouldNotify: true);
      tester.pumpWidget(third);

      expect(log, equals([first, third]));
    });
  });

  test('Update inherited when reparenting state', () {
    testWidgets((WidgetTester tester) {
      GlobalKey globalKey = new GlobalKey();
      List<TestInherited> log = <TestInherited>[];

      TestInherited build() {
        return new TestInherited(
          key: new UniqueKey(),
          child: new Container(
            key: globalKey,
            child: new Builder(
              builder: (BuildContext context) {
                log.add(context.inheritFromWidgetOfExactType(TestInherited));
                return new Container();
              }
            )
          )
        );
      }

      TestInherited first = build();
      tester.pumpWidget(first);

      expect(log, equals([first]));

      TestInherited second = build();
      tester.pumpWidget(second);

      expect(log, equals([first, second]));
    });
  });
}