packages/devtools_shared/test/server/persistent_properties_test.dart

// Copyright 2026 The Flutter Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file or at https://developers.google.com/open-source/licenses/bsd.

import 'dart:convert';
import 'dart:io';

import 'package:devtools_shared/src/server/file_system.dart';
import 'package:test/test.dart';

void main() {
  group('IOPersistentProperties', () {
    late Directory tempDir;
    late IOPersistentProperties properties;
    const storeName = 'test_store';

    setUp(() {
      tempDir =
          Directory.systemTemp.createTempSync('persistent_properties_test');
      properties = IOPersistentProperties(
        storeName,
        documentDirPath: tempDir.path,
      );
    });

    tearDown(() {
      tempDir.deleteSync(recursive: true);
    });

    test('remove persists changes to disk', () {
      properties['key1'] = 'value1';
      properties['key2'] = 'value2';

      final file = File('${tempDir.path}/$storeName');
      expect(file.existsSync(), isTrue);

      var content = file.readAsStringSync();
      var json = (jsonDecode(content) as Map).cast<String, Object>();
      expect(json['key1'], 'value1');
      expect(json['key2'], 'value2');

      properties.remove('key1');

      content = file.readAsStringSync();
      json = (jsonDecode(content) as Map).cast<String, Object>();
      expect(json.containsKey('key1'), isFalse);
      expect(json['key2'], 'value2');
    });
  });
}