file_testkit

A simple way to mock file-related operations in Dart, ideal for testing. It can simulate any file-related operation in a memory-based file system, preventing changes to your actual file system.

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Why Use file_testkit?

• Isolated Testing Environments: Each test runs in its own file system environment, preventing interference between tests.
• Safe Testing: Mock file operations in memory without affecting the real file system.

Usage

1. add dependencies into you project pubspec.yaml file

dependencies:
  file_testkit: ^1.0.0

Run flutter packages get in the root directory of your app.

2. import file_testkit lib

import 'package:file_testkit/file_testkit.dart';

3. use file_testkit

await FileTestkit.runZoned(() async {
  final File file = File('test.txt');

  file.createSync();
  file.writeAsStringSync('hello');

  print('test.txt existed is ${file.existsSync()}');
  if (file.existsSync()) {
    print('file content: ${file.readAsStringSync()}'); // output: hello
  }
});