m3_lightmeter/test/screens/metering/components/shared/readings_container/film_picker_test.dart

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:lightmeter/generated/l10n.dart';
import 'package:lightmeter/res/dimens.dart';
import 'package:lightmeter/screens/metering/components/shared/readings_container/components/film_picker/widget_picker_film.dart';
import 'package:lightmeter/screens/metering/components/shared/readings_container/components/shared/reading_value_container/widget_container_reading_value.dart';
import 'package:m3_lightmeter_iap/m3_lightmeter_iap.dart';
import 'package:m3_lightmeter_resources/m3_lightmeter_resources.dart';

import '../../../../../application_mock.dart';

void main() {
  group('Film push/pull label', () {
    testWidgets(
      'Film.other()',
      (tester) async {
        await tester.pumpApplication(_films[0]);
        _expectReadingValueContainerText(S.current.film);
        _expectReadingValueContainerText(S.current.none);
      },
    );

    testWidgets(
      'Film with the same ISO',
      (tester) async {
        await tester.pumpApplication(_films[2]);
        _expectReadingValueContainerText(S.current.film);
        _expectReadingValueContainerText(_films[2].name);
      },
    );

    testWidgets(
      'Film with greater ISO',
      (tester) async {
        await tester.pumpApplication(_films[3]);
        _expectReadingValueContainerText(S.current.filmPull);
        _expectReadingValueContainerText(_films[3].name);
      },
    );

    testWidgets(
      'Film with lower ISO',
      (tester) async {
        await tester.pumpApplication(_films[1]);
        _expectReadingValueContainerText(S.current.filmPush);
        _expectReadingValueContainerText(_films[1].name);
      },
    );
  });

  testWidgets(
    'Film picker shows only films in use',
    (tester) async {
      await tester.pumpApplication(_films[1]);
      await tester.tap(find.byType(FilmPicker));
      await tester.pumpAndSettle(Dimens.durationL);
      _expectRadioListTile(S.current.none);
      _expectRadioListTile(_films[1].name);
      _expectRadioListTile(_films[2].name);
      _expectRadioListTile(_films[3].name);
    },
  );
}

extension WidgetTesterActions on WidgetTester {
  Future<void> pumpApplication(Film selectedFilm) async {
    await pumpWidget(
      FilmsProvider(
        child: Films(
          values: _films,
          filmsInUse: _films.sublist(0, _films.length - 1),
          selected: selectedFilm,
          child: const WidgetTestApplicationMock(
            child: Row(
              children: [
                Expanded(
                  child: FilmPicker(selectedIso: IsoValue(400, StopType.full)),
                ),
              ],
            ),
          ),
        ),
      ),
    );
    await pumpAndSettle();
  }
}

const _films = [
  Film.other(),
  Film('ISO 100 Film', 100),
  Film('ISO 400 Film', 400),
  Film('ISO 800 Film', 800),
  Film('ISO 1600 Film', 1600),
];

void _expectReadingValueContainerText(String text) {
  expect(
    find.descendant(of: find.byType(ReadingValueContainer), matching: find.text(text)),
    findsOneWidget,
  );
}

void _expectRadioListTile(String filmName) {
  expect(
    find.descendant(of: find.byType(RadioListTile<Film>), matching: find.text(filmName)),
    findsOneWidget,
  );
}