格式化代码

test/unit/domain/entities/photo_test.dart

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+import 'package:test/test.dart';
+
+import '../../../../bin/domain/entities/photo.dart';
+
+void main() {
+  group('Photo', () {
+    test('should create a Photo with required fields', () {
+      final now = DateTime.now();
+      final photo = Photo(
+        id: 1,
+        albumId: 10,
+        filePath: '/data/vacation/photo.jpg',
+        fileName: 'photo.jpg',
+        fileSize: 1024000,
+        mimeType: 'image/jpeg',
+        createdAt: now,
+      );
+
+      expect(photo.id, 1);
+      expect(photo.albumId, 10);
+      expect(photo.filePath, '/data/vacation/photo.jpg');
+      expect(photo.fileName, 'photo.jpg');
+      expect(photo.fileSize, 1024000);
+      expect(photo.mimeType, 'image/jpeg');
+      expect(photo.width, isNull);
+      expect(photo.height, isNull);
+      expect(photo.createdAt, now);
+    });
+
+    test('should create a Photo with optional dimensions', () {
+      final now = DateTime.now();
+      final photo = Photo(
+        id: 2,
+        albumId: 10,
+        filePath: '/data/vacation/photo.png',
+        fileName: 'photo.png',
+        fileSize: 2048000,
+        mimeType: 'image/png',
+        width: 1920,
+        height: 1080,
+        createdAt: now,
+      );
+
+      expect(photo.width, 1920);
+      expect(photo.height, 1080);
+    });
+
+    test('toJson should return correct map', () {
+      final now = DateTime(2024, 6, 15, 10, 30, 0);
+      final photo = Photo(
+        id: 42,
+        albumId: 5,
+        filePath: '/data/test/image.webp',
+        fileName: 'image.webp',
+        fileSize: 500000,
+        mimeType: 'image/webp',
+        width: 800,
+        height: 600,
+        createdAt: now,
+      );
+
+      final json = photo.toJson();
+
+      expect(json, isA<Map<String, dynamic>>());
+      expect(json['id'], 42);
+      expect(json['albumId'], 5);
+      expect(json['filePath'], '/data/test/image.webp');
+      expect(json['fileName'], 'image.webp');
+      expect(json['fileSize'], 500000);
+      expect(json['mimeType'], 'image/webp');
+      expect(json['width'], 800);
+      expect(json['height'], 600);
+      expect(json['createdAt'], now.toIso8601String());
+    });
+
+    test('toJson should include null dimensions when not set', () {
+      final now = DateTime.now();
+      final photo = Photo(
+        id: 1,
+        albumId: 1,
+        filePath: '/data/video.mp4',
+        fileName: 'video.mp4',
+        fileSize: 10000,
+        mimeType: 'video/mp4',
+        createdAt: now,
+      );
+
+      final json = photo.toJson();
+
+      expect(json['width'], isNull);
+      expect(json['height'], isNull);
+    });
+
+    test('toJson should serialize dates in ISO8601 format', () {
+      final createdAt = DateTime(2024, 1, 1);
+      final photo = Photo(
+        id: 1,
+        albumId: 1,
+        filePath: '/data/test.jpg',
+        fileName: 'test.jpg',
+        fileSize: 1000,
+        mimeType: 'image/jpeg',
+        createdAt: createdAt,
+      );
+
+      final json = photo.toJson();
+
+      expect(json['createdAt'], '2024-01-01T00:00:00.000');
+    });
+
+    test('should support video mime types', () {
+      final now = DateTime.now();
+      final photo = Photo(
+        id: 3,
+        albumId: 1,
+        filePath: '/data/clip.mp4',
+        fileName: 'clip.mp4',
+        fileSize: 5000000,
+        mimeType: 'video/mp4',
+        createdAt: now,
+      );
+
+      expect(photo.mimeType, 'video/mp4');
+      expect(photo.toJson()['mimeType'], 'video/mp4');
+    });
+  });
+}