flutter_http_tests

import 'package:my_app_app/components/screens/search.dart';
import 'package:my_app_app/providers/search.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:mockito/mockito.dart';
import 'package:http/http.dart' as http;
import 'package:provider/provider.dart';

class MockClient extends Mock implements http.Client {}

void main() {
  Widget wrapper({Widget child, @required http.Client client}) {
    return MaterialApp(
        home: MultiProvider(providers: [
      ChangeNotifierProvider.value(
        value: Search(client: client),
      ),
    ], child: child));
  }

  testWidgets('show empty text validation on empty search',
      (WidgetTester tester) async {
    var mockClient = MockClient();
    when(mockClient.get(any))
        .thenAnswer((_) async => http.Response('{"title": "Test"}', 200));
    // Create the widget by telling the tester to build it.
    await tester
        .pumpWidget(wrapper(child: SearchItems(), client: mockClient));

    verify(mockClient.get(any)).called(1);
    await tester.fling(find.text('Test Item'), const Offset(0.0, 300.0), 1000.0);
    await tester.pump();

    verify(client.get(any)).called(2);
  });
}