// 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_test/flutter_test.dart';voidmain(){test('NavigationDrawerThemeData copyWith, ==, hashCode, basics',(){expect(constNavigationDrawerThemeData(),constNavigationDrawerThemeData().copyWith());expect(constNavigationDrawerThemeData().hashCode,constNavigationDrawerThemeData().copyWith().hashCode);});test('NavigationDrawerThemeData lerp special cases',(){expect(NavigationDrawerThemeData.lerp(null,null,0),null);constNavigationDrawerThemeDatadata=NavigationDrawerThemeData();expect(identical(NavigationDrawerThemeData.lerp(data,data,0.5),data),true);});}