fileAttachmentDraft method

Implementation

Future<AttachmentDraft> fileAttachmentDraft({String? filepath}) async {
  // ensure attachments exists and permissible to post
  final attachmentsFinder =
      find.byKey(AttachmentSectionWidget.attachmentsKey);
  await attachmentsFinder.should(findsOneWidget);
  final attachmentWidget = attachmentsFinder.evaluate().first.widget
      as FoundAttachmentSectionWidget;
  final attachmentsManager = attachmentWidget.attachmentManager;

  final addAttachmentFinder =
      find.byKey(AttachmentSectionWidget.addAttachmentBtnKey);
  await addAttachmentFinder.should(findsOneWidget);
  //
  final file = await convertAssetImageToXFile(
    filepath ?? 'assets/videos/video.mp4',
  );
  final context = tester.element(addAttachmentFinder);
  final ref = ProviderScope.containerOf(context);
  final client = ref.read(alwaysClientProvider);
  String? mimeType = lookupMimeType(file.path);
  String fileName = file.path.split('/').last;
  int fileSize = await file.length();
  final fileDraft = client
      .fileDraft(file.path, mimeType!)
      .filename(fileName)
      .size(fileSize);
  final attachmentDraft = await attachmentsManager.contentDraft(fileDraft);
  return attachmentDraft;
}