halkyon/halkyon_learn_flutter/test/support/fake_file_saver.dart

import 'dart:typed_data';

import 'package:halkyon_learn_flutter/src/core/files/file_saver.dart';

/// A [FileSaver] that keeps what it is given, unless [cancel] says the
/// person cancelled.
class FakeFileSaver() implements FileSaver {
  /// Whether the next saves are cancelled.
  bool cancel = false;

  /// What was saved, in order.
  final saved = <({String name, Uint8List bytes, String mimeType})>[];

  @override
  Future<bool> save({
    required String name,
    required Uint8List bytes,
    required String mimeType,
  }) async {
    if (cancel) {
      return false;
    }
    saved.add((name: name, bytes: bytes, mimeType: mimeType));
    return true;
  }
}