Line data    Source code

       1             : import 'package:flutter/material.dart';
       2             : import 'package:flutter_redux/flutter_redux.dart';
       3             : import 'package:redfire/types.dart';
       4             : import 'package:redux/redux.dart';
       5             : 
       6             : import '../test-doubles/redux/fake_store.dart';
       7             : 
       8             : /// A test harness to wrap a widget under test and provide all the functionality
       9             : /// that a test may want in order to interact with the widget or check for
      10             : /// expected values and behaviour.
      11             : ///
      12             : /// Currently, calling .receivedActions when [_store] is not a [FakeStore] is
      13             : /// a runtime error - I think we can do better.
      14             : class WidgetTestHarness<T extends RedFireState> {
      15             :   final Store<T> _store;
      16             :   final Widget _widgetUnderTest;
      17             : 
      18           1 :   WidgetTestHarness.withFakeStore(
      19             :       {required T initialState, required Widget widgetUnderTest})
      20           1 :       : _store = FakeStore(initialState),
      21             :         _widgetUnderTest = widgetUnderTest;
      22             : 
      23           0 :   WidgetTestHarness.withStore(
      24             :       {required Store<T> initializedStore, required Widget widgetUnderTest})
      25             :       : _store = initializedStore,
      26             :         _widgetUnderTest = widgetUnderTest;
      27             : 
      28           0 :   Widget get widget => StoreProvider<T>(
      29           0 :       store: _store,
      30           0 :       child: MaterialApp(home: Scaffold(body: _widgetUnderTest)));
      31             : 
      32           0 :   T get state => _store.state;
      33             : 
      34           1 :   List<ReduxAction> get receivedActions {
      35           2 :     if (_store is! FakeStore) {
      36           0 :       throw Exception(
      37             :           'You tried to access `dispatched` on a real `Store`. \n\n Use `WidgetTestHarness.withFakeStore` if you want to access `dispatchedActions`.');
      38             :     }
      39           2 :     return (_store as FakeStore).dispatched;
      40             :   }
      41             : }