// Copyright 2014 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 'package:flutter/material.dart';
import 'package:flutter_api_samples/material/expansion_tile/expansion_tile.2.dart'
    as example;
import 'package:flutter_test/flutter_test.dart';

void main() {
  testWidgets(
    'ExpansionTile animation can be customized using AnimationStyle',
    (WidgetTester tester) async {
      await tester.pumpWidget(const example.ExpansionTileAnimationStyleApp());

      double getHeight(WidgetTester tester) {
        return tester.getSize(find.byType(ExpansionTile)).height;
      }

      expect(getHeight(tester), 58.0);

      // Test the default animation style.
      await tester.tap(find.text('ExpansionTile'));
      await tester.pump();
      await tester.pump(const Duration(milliseconds: 100));

      expect(getHeight(tester), closeTo(93.4, 0.1));

      await tester.pumpAndSettle();

      expect(getHeight(tester), 170.0);

      // Tap to collapse.
      await tester.tap(find.text('ExpansionTile'));
      await tester.pumpAndSettle();

      // Test the custom animation style.
      await tester.tap(find.text('Custom'));
      await tester.pumpAndSettle();

      await tester.tap(find.text('ExpansionTile'));
      await tester.pump();
      await tester.pump(const Duration(milliseconds: 100));

      expect(getHeight(tester), closeTo(59.2, 0.1));

      await tester.pumpAndSettle();

      expect(getHeight(tester), 170.0);

      // Tap to collapse.
      await tester.tap(find.text('ExpansionTile'));
      await tester.pumpAndSettle();

      // Test the no animation style.
      await tester.tap(find.text('None'));
      await tester.pumpAndSettle();

      await tester.tap(find.text('ExpansionTile'));
      await tester.pump();

      expect(getHeight(tester), 170.0);
    },
  );
}
