// Copyright 2014 The Flutter Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. import 'package:flutter/widgets.dart'; import 'package:flutter_test/flutter_test.dart'; void main() { testWidgets('Intrinsic stepWidth, stepHeight', (WidgetTester tester) async { // Regression test for https://github.com/flutter/flutter/issues/25224 Widget buildFrame(double? stepWidth, double? stepHeight) { return Center( child: IntrinsicWidth( stepWidth: stepWidth, stepHeight: stepHeight, child: const SizedBox(width: 100.0, height: 50.0), ), ); } await tester.pumpWidget(buildFrame(null, null)); expect(tester.getSize(find.byType(IntrinsicWidth)), const Size(100.0, 50.0)); await tester.pumpWidget(buildFrame(0.0, 0.0)); expect(tester.getSize(find.byType(IntrinsicWidth)), const Size(100.0, 50.0)); expect(() { buildFrame(-1.0, 0.0); }, throwsAssertionError); expect(() { buildFrame(0.0, -1.0); }, throwsAssertionError); }); }