image_picker_bottom_sheet_test.dart

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:frontend/image_picker_bottom_sheet.dart'
    as ImagePickerBottomSheet;

void main() {
  testWidgets(
      'Bottom sheet should appear and show choose from gallery or take a new picture text',
      (WidgetTester tester) async {
    BuildContext savedContext;

    await tester
        .pumpWidget(MaterialApp(home: Builder(builder: (BuildContext context) {
      savedContext = context;
      return Container();
    })));

    await tester.pump();
    expect(
        find.text(ImagePickerBottomSheet.kTakeANewPictureText), findsNothing);
    expect(
        find.text(ImagePickerBottomSheet.kChooseFromGalleryText), findsNothing);

    ImagePickerBottomSheet.showImagePickerBottomSheet(savedContext);

    await tester.pump(); // Bottom sheet show animation starts
    await tester.pump(const Duration(seconds: 2)); // animation done

    expect(find.text(ImagePickerBottomSheet.kChooseFromGalleryText),
        findsOneWidget);
    expect(
        find.text(ImagePickerBottomSheet.kTakeANewPictureText), findsOneWidget);
  });
}