sxchnge/frontend/app/test/autofill_test.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

import 'package:flutter_test/flutter_test.dart';

import 'package:sxchnge_app/main.dart';
import 'package:sxchnge_app/providers/locale.dart';

Finder field(String key) => find.byKey(ValueKey(key));

EditableTextState editor(WidgetTester tester, String key) =>
    tester.state<EditableTextState>(
      find.descendant(of: field(key), matching: find.byType(EditableText)),
    );

void main() {
  for (final language in ['en', 'ru']) {
    testWidgets(
      'platform autofill fills the signup credential group ($language)',
      (tester) async {
        tester.view.physicalSize = const Size(1440, 1200);
        tester.view.devicePixelRatio = 1;
        addTearDown(tester.view.resetPhysicalSize);
        addTearDown(tester.view.resetDevicePixelRatio);
        await tester.pumpWidget(
          SxchngeApp(
            localeProvider: LocaleProvider(initialLocale: Locale(language)),
          ),
        );
        await tester.pumpAndSettle();
        await tester.tap(
          find.text(language == 'ru' ? 'Регистрация' : 'Sign up'),
        );
        await tester.pumpAndSettle();
        await tester.showKeyboard(field('email'));

        final configuration = tester.testTextInput.setClientArgs!;
        expect(
          configuration['inputType']['name'],
          'TextInputType.emailAddress',
        );
        final fields = (configuration['fields'] as List).cast<Map>();
        expect(fields, hasLength(4));
        expect(
          fields.map((field) => field['autofill']['hints'].first),
          containsAll(['name', 'username', 'newPassword', 'newPassword']),
        );

        const values = {
          'name': 'Alex Example',
          'email': 'alex@example.com',
          'password': 'generated-example-password',
          'confirmation': 'generated-example-password',
        };
        await tester.binding.defaultBinaryMessenger.handlePlatformMessage(
          SystemChannels.textInput.name,
          SystemChannels.textInput.codec.encodeMethodCall(
            MethodCall('TextInputClient.updateEditingStateWithTag', [
              0,
              {
                for (final entry in values.entries)
                  editor(tester, entry.key).autofillId: TextEditingValue(
                    text: entry.value,
                  ).toJSON(),
              },
            ]),
          ),
          (_) {},
        );
        await tester.pumpAndSettle();
        for (final entry in values.entries) {
          expect(
            editor(tester, entry.key).currentTextEditingValue.text,
            entry.value,
          );
        }

        // A visibility change must retain both the supplied value and its role.
        await tester.tap(
          find.byTooltip(
            language == 'ru' ? 'Показать пароль' : 'Show password',
          ),
        );
        await tester.pump();
        expect(editor(tester, 'password').widget.obscureText, isFalse);
        expect(editor(tester, 'password').widget.autofillHints, [
          'newPassword',
        ]);
        expect(
          editor(tester, 'password').currentTextEditingValue.text,
          values['password'],
        );

        await tester.tap(find.text(language == 'ru' ? 'Войти' : 'Log in'));
        await tester.pumpAndSettle();
        await tester.showKeyboard(field('email'));
        final loginFields =
            (tester.testTextInput.setClientArgs!['fields'] as List).cast<Map>();
        expect(loginFields, hasLength(2));
        expect(loginFields.map((field) => field['autofill']['hints'].first), [
          'username',
          'password',
        ]);
        expect(
          editor(tester, 'password').currentTextEditingValue.text,
          isEmpty,
        );
        expect(
          tester.testTextInput.log,
          contains(
            isMethodCall('TextInput.finishAutofillContext', arguments: false),
          ),
        );
        expect(
          tester.testTextInput.log,
          isNot(
            contains(
              isMethodCall('TextInput.finishAutofillContext', arguments: true),
            ),
          ),
        );
      },
    );
  }

  testWidgets('leaving an unfinished auth form cancels saving', (tester) async {
    await tester.pumpWidget(const SxchngeApp());
    await tester.pumpAndSettle();
    await tester.enterText(field('email'), 'alex@example.com');
    await tester.enterText(field('password'), 'unfinished-password');
    tester.testTextInput.log.clear();
    await tester.pumpWidget(const SizedBox.shrink());
    await tester.pumpAndSettle();
    expect(
      tester.testTextInput.log,
      contains(
        isMethodCall('TextInput.finishAutofillContext', arguments: false),
      ),
    );
    expect(
      tester.testTextInput.log,
      isNot(
        contains(
          isMethodCall('TextInput.finishAutofillContext', arguments: true),
        ),
      ),
    );
  });
}