import 'package:test/test.dart'; import 'package:flutter_test/flutter_test.dart'; import 'package:flutter/material.dart'; import 'package:stocks/main.dart' as stocks; import 'package:stocks/stock_data.dart' as stock_data; void main() { stock_data.StockDataFetcher.actuallyFetchData = false; test("Test changing locale", () { testWidgets((WidgetTester tester) { stocks.main(); tester.pump(const Duration(seconds: 1)); // Unclear why duration is required. Element<Text> tab = tester.findText('MARKET'); expect(tab, isNotNull); tester.setLocale("es", "US"); tester.pump(); expect(tab.widget.data, equals("MERCADO")); }); }); }