Get the current project directory from flutter integration test - flutter

Question

Is there a way to get the current project directory in flutter integration test? This is a basic test setup as an example.
import 'dart:io';
import 'package:flutter_driver/driver_extension.dart';
import 'package:ivori/main.dart' as app;
import 'package:glob/glob.dart';
void main() {
// This line enables the extension.
enableFlutterDriverExtension();
print("Where the working directory? ${Directory.current}");
print("What's under the current directory? ${Glob("*").listSync()}");
// Call the `main()` function of the app, or call `runApp` with
// any widget you are interested in testing.
app.main();
}
Both of the middle two added lines Directory.current and Glob("*").listSync() are attempts to check/show the current working directory. The output from the above is:
$ flutter drive --target=test_driver/app.dart
Changing current working directory to: /Users/yuchen/Documents/MyDemoApp
Using device iPhone SE (2nd generation).
Starting application: test_driver/app.dart
...
...
...
flutter: Where the working directory? Directory: '/'
flutter: What's under the current directory? [Directory: './home', Directory: './usr', File: './.DS_Store', Directory: './bin', Directory: './sbin', File: './.file',
Directory: './etc', Directory: './var', Directory: './Library', Directory: './System', Link: './.VolumeIcon.icns', Directory: './.fseventsd', Directory: './private',
Directory: './.vol', Directory: './Users', Directory: './Applications', Directory: './opt', Directory: './dev', Directory: './Volumes', Directory: './tmp', Directory:
'./cores']
Not hard to see, the working directory is actually set to the root folder of the computer. Is there a way to get to the current project directory or src directory somehow?
The motivation behind this is to have some test data that will be used during the test but not in the app bundle. There are some discussions (fixes and work rounds) about unit tests in this long thread https://github.com/flutter/flutter/issues/12999. However, it doesn't seem to have a solution for integration tests.

Answer 1

In my case, I used ext_storage to access the device's storage. The path_provider plugin seems to only able to access the app's directory.
Here's a sample of fetching the storage path for Downloads.
/// Get storage path for Downloads
/// https://pub.dev/documentation/ext_storage/latest/
Future<String> _getPath() {
return ExtStorage.getExternalStoragePublicDirectory(
ExtStorage.DIRECTORY_DOWNLOADS);
}

Answer 2

Flutter test command accepts a parameter --dart-define which allows you to set variables
Running your test like this:
flutter test integration_test/test.dart --dart-define=projectRoot=$(pwd)
from the root of your project will allow your test code to access the projectRoot variable and get your files
const projectRoot = String.fromEnvironment('projectRoot');
// now you can access your files like you would expect
final file = File('$projectRoot/test_resources/test.json');
Note: Flutter sets the execution directory to the root of the file system only for integration tests, you don't need this workaround for regular unit (widget) tests