test properties

flutter/test/attachment/screenshot_attachment_test.dart

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+import 'package:flutter/scheduler.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:sentry/sentry.dart';
+import 'package:sentry_flutter/src/screenshot/screenshot_attachment.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  group('$ScreenshotAttachment ctor', () {
+    late Fixture fixture;
+
+    setUp(() {
+      fixture = Fixture();
+    });
+
+    test('properties', () async {
+      final sut = fixture.getSut();
+
+      expect(sut.attachmentType, SentryAttachment.typeAttachmentDefault);
+      expect(sut.contentType, 'image/png');
+      expect(sut.filename, 'screenshot.png');
+      expect(sut.addToTransactions, true);
+    });
+  });
+}
+
+class Fixture {
+  final schedulerBinding = SchedulerBinding.instance;
+  final options = SentryOptions();
+
+  ScreenshotAttachment getSut() {
+    return ScreenshotAttachment(SchedulerBinding.instance, SentryOptions());
+  }
+}