| // 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 'dart:ui' as ui show window; |
| |
| import 'package:flutter/material.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| import 'package:stocks/main.dart' as stocks; |
| import 'package:stocks/stock_data.dart' as stock_data; |
| |
| Element findElementOfExactWidgetTypeGoingDown(Element node, Type targetType) { |
| void walker(Element child) { |
| if (child.widget.runtimeType == targetType) |
| throw child; |
| child.visitChildElements(walker); |
| } |
| try { |
| walker(node); |
| } on Element catch (result) { |
| return result; |
| } |
| return null; |
| } |
| |
| Element findElementOfExactWidgetTypeGoingUp(Element node, Type targetType) { |
| Element result; |
| bool walker(Element ancestor) { |
| if (ancestor.widget.runtimeType == targetType) |
| result = ancestor; |
| return result == null; |
| } |
| node.visitAncestorElements(walker); |
| return result; |
| } |
| |
| final RegExp materialIconAssetNameColorExtractor = RegExp(r'[^/]+/ic_.+_(white|black)_[0-9]+dp\.png'); |
| |
| void checkIconColor(WidgetTester tester, String label, Color color) { |
| final Element listTile = findElementOfExactWidgetTypeGoingUp(tester.element(find.text(label)), ListTile); |
| expect(listTile, isNotNull); |
| final Element asset = findElementOfExactWidgetTypeGoingDown(listTile, RichText); |
| final RichText richText = asset.widget as RichText; |
| expect(richText.text.style.color, equals(color)); |
| } |
| |
| void main() { |
| stock_data.StockData.actuallyFetchData = false; |
| |
| testWidgets('Icon colors', (WidgetTester tester) async { |
| stocks.main(); // builds the app and schedules a frame but doesn't trigger one |
| await tester.pump(); // see https://github.com/flutter/flutter/issues/1865 |
| await tester.pump(); // triggers a frame |
| |
| // sanity check |
| expect(find.text('MARKET'), findsOneWidget); |
| expect(find.text('Account Balance'), findsNothing); |
| await tester.pump(const Duration(seconds: 2)); |
| expect(find.text('MARKET'), findsOneWidget); |
| expect(find.text('Account Balance'), findsNothing); |
| |
| // drag the drawer out |
| final Offset left = Offset(0.0, (ui.window.physicalSize / ui.window.devicePixelRatio).height / 2.0); |
| final Offset right = Offset((ui.window.physicalSize / ui.window.devicePixelRatio).width, left.dy); |
| final TestGesture gesture = await tester.startGesture(left); |
| await tester.pump(); |
| await gesture.moveTo(right); |
| await tester.pump(); |
| await gesture.up(); |
| await tester.pump(); |
| expect(find.text('MARKET'), findsOneWidget); |
| expect(find.text('Account Balance'), findsOneWidget); |
| |
| // check the color of the icon - light mode |
| checkIconColor(tester, 'Stock List', Colors.purple); // theme primary color |
| checkIconColor(tester, 'Account Balance', Colors.black38); // disabled |
| checkIconColor(tester, 'About', Colors.black45); // enabled |
| |
| // switch to dark mode |
| await tester.tap(find.text('Pessimistic')); |
| await tester.pump(); // get the tap and send the notification that the theme has changed |
| await tester.pump(); // start the theme transition |
| await tester.pump(const Duration(seconds: 5)); // end the transition |
| |
| // check the color of the icon - dark mode |
| checkIconColor(tester, 'Stock List', Colors.purple); // theme primary color |
| checkIconColor(tester, 'Account Balance', Colors.white38); // disabled |
| checkIconColor(tester, 'About', Colors.white); // enabled |
| }); |
| } |