Testing with MaterialApp

[snotani]

Steps to Reproduce

file:/home/fridgebuddy/Desktop/FridgeBuddy-master/test/app_test.dart

Logs

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:tablet_app/app_screens/user_update_screen.dart';

Conflicting code:
void main() {
testWidgets('app should work', (tester) async {
await tester.pumpWidget(new MaterialApp());
expect(find.byWidget(user_update_screen()), findsNothing);
});
}
Analyzing FridgeBuddy-master...

info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/add_screen.dart:13:5 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/add_screen.dart:17:5 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/add_screen.dart:21:5 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/add_screen.dart:67:23 • non_constant_identifier_names
info • This function has a return type of 'Future', but doesn't end with a return statement • lib/app_screens/add_screen.dart:69:1 • missing_return
info • Name types using UpperCamelCase • lib/app_screens/add_screen.dart:80:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/add_screen.dart:85:7 • camel_case_types
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/add_screen.dart:512:38 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/add_screen.dart:518:36 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/add_screen.dart:524:34 • non_constant_identifier_names
info • Name types using UpperCamelCase • lib/app_screens/add_screen.dart:597:7 • camel_case_types
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/add_screen.dart:624:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/add_screen.dart:637:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/add_screen.dart:689:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/add_screen.dart:738:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/add_screen.dart:786:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/add_screen.dart:793:6 • non_constant_identifier_names
info • Unused import: 'admin_login_screen.dart' • lib/app_screens/admin_home_screen.dart:2:8 • unused_import
info • Name types using UpperCamelCase • lib/app_screens/admin_home_screen.dart:9:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/admin_home_screen.dart:14:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/admin_home_screen.dart:92:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/admin_home_screen.dart:120:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/admin_home_screen.dart:147:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/admin_home_screen.dart:174:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/admin_home_screen.dart:201:7 • camel_case_types
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/admin_home_screen.dart:258:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/admin_home_screen.dart:286:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/admin_home_screen.dart:292:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/admin_login_screen.dart:13:5 • non_constant_identifier_names
info • The class 'Future' was not exported from 'dart:core' until version 2.1, but this code is required to be able to run on earlier versions •
lib/app_screens/admin_login_screen.dart:16:1 • sdk_version_async_exported_from_core
info • Name types using UpperCamelCase • lib/app_screens/admin_login_screen.dart:35:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/admin_login_screen.dart:40:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/admin_login_screen.dart:188:7 • camel_case_types
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/admin_login_screen.dart:197:11 • non_constant_identifier_names
info • Name types using UpperCamelCase • lib/app_screens/admin_login_screen.dart:212:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/admin_update_screen.dart:6:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/admin_update_screen.dart:11:7 • camel_case_types
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/admin_update_screen.dart:83:7 • non_constant_identifier_names
info • Name types using UpperCamelCase • lib/app_screens/admin_update_screen.dart:143:7 • camel_case_types
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/admin_update_screen.dart:169:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/admin_update_screen.dart:169:51 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/admin_update_screen.dart:195:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/admin_update_screen.dart:224:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/admin_update_screen.dart:235:6 • non_constant_identifier_names
info • Name types using UpperCamelCase • lib/app_screens/admin_view_screen.dart:7:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/admin_view_screen.dart:12:7 • camel_case_types
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/admin_view_screen.dart:84:7 • non_constant_identifier_names
info • The value of the local variable 'quantity_check' isn't used • lib/app_screens/admin_view_screen.dart:84:7 • unused_local_variable
info • Name types using UpperCamelCase • lib/app_screens/feedback_page.dart:4:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/feedback_page.dart:9:7 • camel_case_types
info • Unused import: 'admin_login_screen.dart' • lib/app_screens/sign_up_screen.dart:4:8 • unused_import
info • The class 'Future' was not exported from 'dart:core' until version 2.1, but this code is required to be able to run on earlier versions •
lib/app_screens/sign_up_screen.dart:16:1 • sdk_version_async_exported_from_core
info • Name types using UpperCamelCase • lib/app_screens/sign_up_screen.dart:45:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/sign_up_screen.dart:50:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/sign_up_screen.dart:228:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/user_update_screen.dart:6:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/user_update_screen.dart:12:7 • camel_case_types
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/user_update_screen.dart:94:7 • non_constant_identifier_names
warning • The parameter 'onPressed' is required • lib/app_screens/user_update_screen.dart:144:11 • missing_required_param
info • Name types using UpperCamelCase • lib/app_screens/user_update_screen.dart:176:7 • camel_case_types
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/user_update_screen.dart:202:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/user_update_screen.dart:202:51 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/user_update_screen.dart:257:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/user_update_screen.dart:286:6 • non_constant_identifier_names
info • Name non-constant identifiers using lowerCamelCase • lib/app_screens/user_update_screen.dart:297:6 • non_constant_identifier_names
info • Duplicate import • lib/app_screens/verify_accounts_screen.dart:5:8 • duplicate_import
info • The class 'Future' was not exported from 'dart:core' until version 2.1, but this code is required to be able to run on earlier versions •
lib/app_screens/verify_accounts_screen.dart:11:1 • sdk_version_async_exported_from_core
info • This function has a return type of 'Future', but doesn't end with a return statement • lib/app_screens/verify_accounts_screen.dart:11:1 •
missing_return
info • Name types using UpperCamelCase • lib/app_screens/verify_accounts_screen.dart:22:7 • camel_case_types
info • Name types using UpperCamelCase • lib/app_screens/verify_accounts_screen.dart:27:7 • camel_case_types
info • Name types using UpperCamelCase • test/widget_test.dart:32:7 • camel_case_types

The following assertion was thrown building MaterialApp(dirty, state: _MaterialAppState#6ea1c):
'package:flutter/src/widgets/app.dart': Failed assertion: line 165 pos 15: 'navigatorObservers !=
null': is not true.

[justinmc]

This error is thrown when trying to render a MaterialApp with no content. You'll have to add a home property for example:

    await tester.pumpWidget(MaterialApp(
      home: Text('hi'),
    ));

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.