Build exchange workspace and shared transaction services (#28)
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import 'package:flutter/material.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:go_router/go_router.dart';
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import 'package:sxchnge_kyc/sxchnge_kyc.dart';
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import 'package:sxchnge_wallet/sxchnge_wallet.dart';
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import 'package:sxchnge_app/main.dart';
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import 'package:sxchnge_app/providers/locale.dart';
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Future<void> tap(WidgetTester t, Finder f) async {
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await t.ensureVisible(f);
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await t.tap(f);
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await t.pumpAndSettle();
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}
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Future<DummyWalletService> open(
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WidgetTester t, {
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String path = '/accounts',
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String locale = 'en',
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Duration settlement = Duration.zero,
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}) async {
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t.platformDispatcher.defaultRouteNameTestValue = path;
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addTearDown(t.platformDispatcher.clearDefaultRouteNameTestValue);
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final identity = DummyIdentityService(delay: Duration.zero);
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final service = DummyWalletService(
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identity,
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delay: Duration.zero,
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settlement: settlement,
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initialLocale: locale,
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);
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await t.pumpWidget(
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SxchngeApp(
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identityService: identity,
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walletService: service,
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localeProvider: LocaleProvider(initialLocale: Locale(locale)),
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),
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);
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await t.pumpAndSettle();
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addTearDown(() => t.pumpWidget(const SizedBox.shrink()));
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return service;
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}
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void main() {
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testWidgets('available-only accounts expose one set of actions', (t) async {
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await open(t);
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expect(find.text('Reserved'), findsNothing);
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expect(find.text('Held'), findsNothing);
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expect(find.byKey(const ValueKey('exchange-eur')), findsOneWidget);
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expect(find.byKey(const ValueKey('exchange-usd')), findsNothing);
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await tap(t, find.byKey(const ValueKey('account-usd')));
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expect(find.byKey(const ValueKey('topUp-usd')), findsOneWidget);
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expect(find.byKey(const ValueKey('exchange-eur')), findsNothing);
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});
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testWidgets('top-up exchange payout end-to-end and history', (t) async {
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final s = await open(t);
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await tap(t, find.byKey(const ValueKey('topUp-eur')));
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await t.enterText(find.byKey(const ValueKey('transfer-amount')), '10');
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await tap(t, find.byKey(const ValueKey('transfer-review')));
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expect(find.text('You pay'), findsOneWidget);
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await tap(t, find.byKey(const ValueKey('transfer-confirm')));
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expect(find.byKey(const ValueKey('operation-completed')), findsOneWidget);
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expect(
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find.text(
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'Your account has been credited. The money is available to use.',
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),
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findsOneWidget,
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);
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await tap(t, find.text('Exchange').last);
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await t.enterText(find.byKey(const ValueKey('transfer-amount')), '20');
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await tap(t, find.byKey(const ValueKey('transfer-review')));
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expect(find.text('Leaves your account'), findsOneWidget);
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expect(find.text('Fee'), findsOneWidget);
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await tap(t, find.byKey(const ValueKey('transfer-confirm')));
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expect(find.byKey(const ValueKey('operation-completed')), findsOneWidget);
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await tap(t, find.text('Pay out').last);
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await t.enterText(find.byKey(const ValueKey('transfer-amount')), '5');
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await t.enterText(
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find.byKey(const ValueKey('transfer-recipient')),
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'Sample recipient',
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);
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await tap(t, find.byKey(const ValueKey('transfer-review')));
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expect(find.text('Recipient receives'), findsOneWidget);
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await tap(t, find.byKey(const ValueKey('transfer-confirm')));
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expect(find.byKey(const ValueKey('operation-completed')), findsOneWidget);
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final data = (await t.runAsync(() => s.fetch()))!;
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expect(data.operations.length, 3);
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expect(data.accounts.first.available, 6490);
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expect(data.accounts[1].available, 1600);
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});
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testWidgets(
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'processing payout explains reduced available balance then failed refund',
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(t) async {
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final s = await open(
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t,
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path: '/payout',
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settlement: const Duration(milliseconds: 100),
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);
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s.failNextOperation = true;
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await t.enterText(find.byKey(const ValueKey('transfer-amount')), '10');
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await t.enterText(
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find.byKey(const ValueKey('transfer-recipient')),
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'Sample recipient',
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);
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await tap(t, find.byKey(const ValueKey('transfer-review')));
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await tap(t, find.byKey(const ValueKey('transfer-confirm')));
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// Settlement is service-owned; refresh after the simulated processing period.
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await t.runAsync(
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() => Future<void>.delayed(const Duration(milliseconds: 150)),
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);
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await t.pump(const Duration(seconds: 3));
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await t.pumpAndSettle();
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expect(find.byKey(const ValueKey('operation-failed')), findsOneWidget);
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expect(
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find.text(
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'The transaction did not complete. The amount and fee are available in your account again.',
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),
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findsOneWidget,
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);
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expect(
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((await t.runAsync(() => s.fetch()))!).accounts.first.available,
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7500,
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);
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},
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);
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testWidgets(
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'settings saves account language and hides page language selectors',
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(t) async {
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final s = await open(t, path: '/settings');
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expect(find.byKey(const ValueKey('locale-selector')), findsNothing);
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await tap(t, find.byKey(const ValueKey('account-language-en')));
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await tap(t, find.text('Русский').last);
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expect(((await t.runAsync(() => s.profile()))!).locale, 'ru');
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expect(find.text('Язык аккаунта'), findsWidgets);
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},
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);
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testWidgets(
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'language save failure retains session choice and provides retry',
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(t) async {
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final s = await open(t, path: '/settings');
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s.nextError = WalletError.unavailable;
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await tap(t, find.byKey(const ValueKey('account-language-en')));
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await tap(t, find.text('Русский').last);
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expect(
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find.text(
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'Изменено для текущей сессии, но не сохранено в аккаунте. Повторите попытку ниже.',
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),
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findsOneWidget,
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);
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expect(((await t.runAsync(() => s.profile()))!).locale, 'en');
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await tap(t, find.text('Обновить').last);
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expect(((await t.runAsync(() => s.profile()))!).locale, 'ru');
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},
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);
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testWidgets(
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'insufficient funds preserves entered amount and can be corrected',
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(t) async {
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await open(t, path: '/exchange');
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await t.enterText(find.byKey(const ValueKey('transfer-amount')), '900');
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await tap(t, find.byKey(const ValueKey('transfer-review')));
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expect(find.byKey(const ValueKey('transfer-error')), findsOneWidget);
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expect(find.text('900'), findsOneWidget);
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await t.enterText(find.byKey(const ValueKey('transfer-amount')), '5');
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await tap(t, find.byKey(const ValueKey('transfer-review')));
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expect(find.byKey(const ValueKey('transfer-confirm')), findsOneWidget);
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},
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);
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testWidgets('uncertain submission checks outcome instead of sending twice', (
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t,
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) async {
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final s = await open(t, path: '/exchange');
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await t.enterText(find.byKey(const ValueKey('transfer-amount')), '5');
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await tap(t, find.byKey(const ValueKey('transfer-review')));
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s.loseNextResponse = true;
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await tap(t, find.byKey(const ValueKey('transfer-confirm')));
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expect(find.text('Check outcome'), findsOneWidget);
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await tap(t, find.text('Check outcome'));
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expect(((await t.runAsync(() => s.fetch()))!).operations.length, 1);
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expect(find.byKey(const ValueKey('operation-completed')), findsOneWidget);
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});
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for (final path in [
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'/accounts',
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'/exchange',
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'/payout',
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'/activity',
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'/limits',
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'/settings',
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]) {
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testWidgets('$path fits Russian at 320px with larger text', (t) async {
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t.view.physicalSize = const Size(320, 1100);
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t.view.devicePixelRatio = 1;
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t.platformDispatcher.textScaleFactorTestValue = 1.6;
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addTearDown(t.view.resetPhysicalSize);
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addTearDown(t.view.resetDevicePixelRatio);
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addTearDown(t.platformDispatcher.clearTextScaleFactorTestValue);
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await open(t, path: path, locale: 'ru');
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expect(t.takeException(), null);
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if (path == '/exchange') {
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await t.enterText(find.byKey(const ValueKey('transfer-amount')), '5');
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await tap(t, find.byKey(const ValueKey('transfer-review')));
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expect(t.takeException(), null);
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}
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});
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}
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testWidgets('leaving a draft requires a clear discard choice', (t) async {
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await open(t, path: '/exchange');
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await t.enterText(find.byKey(const ValueKey('transfer-amount')), '5');
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final router = GoRouter.of(
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t.element(find.byKey(const ValueKey('transfer-amount'))),
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);
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router.go('/accounts');
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await t.pumpAndSettle();
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expect(find.text('Leave this transaction?'), findsOneWidget);
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await tap(t, find.text('Keep editing'));
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expect(find.text('5'), findsOneWidget);
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});
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}
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