examples/api/test/material/radio/radio.1_test.dart

// 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/material.dart';
import 'package:flutter_api_samples/material/radio/radio.1.dart' as example;
import 'package:flutter_test/flutter_test.dart';

void main() {
  testWidgets('Radio colors can be changed', (WidgetTester tester) async {
    await tester.pumpWidget(const example.RadioExampleApp());

    expect(find.widgetWithText(AppBar, 'Radio Sample'), findsOne);
    expect(find.widgetWithText(ListTile, 'Fill color'), findsOne);
    expect(find.widgetWithText(ListTile, 'Background color'), findsOne);
    expect(find.widgetWithText(ListTile, 'Side'), findsOne);
    expect(find.widgetWithText(ListTile, 'Inner radius'), findsOne);

    final Radio<example.RadioType> radioFillColor = tester.widget<Radio<example.RadioType>>(
      find.byType(Radio<example.RadioType>).first,
    );
    expect(
      radioFillColor.fillColor!.resolve(const <WidgetState>{WidgetState.selected}),
      Colors.deepPurple,
    );
    expect(radioFillColor.fillColor!.resolve(const <WidgetState>{}), Colors.deepPurple.shade200);

    final Radio<example.RadioType> radioBackgroundColor = tester.widget<Radio<example.RadioType>>(
      find.byType(Radio<example.RadioType>).at(1),
    );
    expect(
      radioBackgroundColor.backgroundColor!.resolve(const <WidgetState>{WidgetState.selected}),
      Colors.greenAccent.withOpacity(0.5),
    );
    expect(
      radioBackgroundColor.backgroundColor!.resolve(const <WidgetState>{}),
      Colors.grey.shade300.withOpacity(0.3),
    );

    final Radio<example.RadioType> radioSide = tester.widget<Radio<example.RadioType>>(
      find.byType(Radio<example.RadioType>).at(2),
    );
    expect(
      (radioSide.side! as WidgetStateBorderSide).resolve(const <WidgetState>{WidgetState.selected}),
      const BorderSide(color: Colors.red, width: 4, strokeAlign: BorderSide.strokeAlignCenter),
    );
    expect(
      (radioSide.side! as WidgetStateBorderSide).resolve(const <WidgetState>{}),
      const BorderSide(color: Colors.grey, width: 1.5, strokeAlign: BorderSide.strokeAlignCenter),
    );

    final Radio<example.RadioType> radioInnerRadius = tester.widget<Radio<example.RadioType>>(
      find.byType(Radio<example.RadioType>).last,
    );
    expect(radioInnerRadius.innerRadius!.resolve(const <WidgetState>{WidgetState.selected}), 6);
  });
}