flutter-go/packages/flutter_web/test/widgets/image_icon_test.dart

// Copyright 2015 The Chromium 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_web/rendering.dart';
import 'package:flutter_web/widgets.dart';
import 'package:flutter_web_test/flutter_web_test.dart';

import '../painting/mocks_for_image_cache.dart';

const ImageProvider _kImage = TestImageProvider(21, 42);

void main() {
  testWidgets('ImageIcon sizing - no theme, default size',
      (WidgetTester tester) async {
    await tester.pumpWidget(const Center(child: ImageIcon(_kImage)));

    final RenderBox renderObject = tester.renderObject(find.byType(ImageIcon));
    expect(renderObject.size, equals(const Size.square(24.0)));
    expect(find.byType(Image), findsOneWidget);
  });

  testWidgets('Icon opacity', (WidgetTester tester) async {
    await tester.pumpWidget(
      const Center(
        child: IconTheme(
          data: IconThemeData(opacity: 0.5),
          child: ImageIcon(_kImage),
        ),
      ),
    );

    final Image image = tester.widget(find.byType(Image));
    expect(image, isNotNull);
    expect(image.color.alpha, equals(128));
  });

  testWidgets('ImageIcon sizing - no theme, explicit size',
      (WidgetTester tester) async {
    await tester.pumpWidget(const Center(child: ImageIcon(null, size: 96.0)));

    final RenderBox renderObject = tester.renderObject(find.byType(ImageIcon));
    expect(renderObject.size, equals(const Size.square(96.0)));
  });

  testWidgets('ImageIcon sizing - sized theme', (WidgetTester tester) async {
    await tester.pumpWidget(const Center(
        child: IconTheme(
            data: IconThemeData(size: 36.0), child: ImageIcon(null))));

    final RenderBox renderObject = tester.renderObject(find.byType(ImageIcon));
    expect(renderObject.size, equals(const Size.square(36.0)));
  });

  testWidgets('ImageIcon sizing - sized theme, explicit size',
      (WidgetTester tester) async {
    await tester.pumpWidget(const Center(
        child: IconTheme(
            data: IconThemeData(size: 36.0),
            child: ImageIcon(null, size: 48.0))));

    final RenderBox renderObject = tester.renderObject(find.byType(ImageIcon));
    expect(renderObject.size, equals(const Size.square(48.0)));
  });

  testWidgets('ImageIcon sizing - sizeless theme, default size',
      (WidgetTester tester) async {
    await tester.pumpWidget(const Center(
        child: IconTheme(data: IconThemeData(), child: ImageIcon(null))));

    final RenderBox renderObject = tester.renderObject(find.byType(ImageIcon));
    expect(renderObject.size, equals(const Size.square(24.0)));
  });

  testWidgets('ImageIcon has semantics data', (WidgetTester tester) async {
    final SemanticsHandle handle = tester.ensureSemantics();
    await tester.pumpWidget(
      const Directionality(
        textDirection: TextDirection.ltr,
        child: Center(
          child: IconTheme(
              data: IconThemeData(),
              child: ImageIcon(null, semanticLabel: 'test')),
        ),
      ),
    );

    expect(
        tester.getSemantics(find.byType(ImageIcon)),
        matchesSemantics(
          label: 'test',
          textDirection: TextDirection.ltr,
        ));
    handle.dispose();
  });
}