platform_interface library

The platform interface of file_saver_ffi.

Use it to replace the platform in your app's tests with a fake:

import 'package:file_saver_ffi/file_saver_ffi.dart';
import 'package:file_saver_ffi/platform_interface.dart';

class FakeFileSaver extends FileSaverPlatform {
  final saved = <String>[];

  @override
  Stream<SaveProgress> saveBytes({
    required Uint8List fileBytes,
    required FileType fileType,
    required String fileName,
    SaveLocation? saveLocation,
    String? subDir,
    ConflictResolution conflictResolution = ConflictResolution.autoRename,
  }) {
    saved.add(fileName);
    return Stream.value(SaveProgressComplete(Uri.parse('file:///$fileName')));
  }

  // Fails the test on any call it doesn't expect.
  @override
  dynamic noSuchMethod(Invocation invocation) =>
      super.noSuchMethod(invocation);
}

void main() {
  setUp(() => FileSaverPlatform.instance = FakeFileSaver());
}

Extend FileSaverPlatform rather than implementing it, so the methods it implements itself, such as pickDirectory, keep working.

Classes

FileSaverPlatform

Platform interface for file saver implementations.