mirror of
https://github.com/flutter/flutter
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7038597b02
A new front-end for the Flutter Gallery example.
178 lines
7.2 KiB
Dart
178 lines
7.2 KiB
Dart
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:math' as math;
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import 'package:flutter/material.dart';
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import 'package:flutter/rendering.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:flutter_gallery/gallery/demos.dart';
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import 'package:flutter_gallery/gallery/app.dart' show GalleryApp;
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// This title is visible on the home and demo category pages. It's
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// not visible when the demos are running.
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const String kGalleryTitle = 'Flutter gallery';
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// All of the classes printed by debugDump etc, must have toString()
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// values approved by verityToStringOutput().
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int toStringErrors = 0;
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void reportToStringError(String name, String route, int lineNumber, List<String> lines, String message) {
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// If you're on line 12, then it has index 11.
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// If you want 1 line before and 1 line after, then you want lines with index 10, 11, and 12.
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// That's (lineNumber-1)-margin .. (lineNumber-1)+margin, or lineNumber-(margin+1) .. lineNumber+(margin-1)
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const int margin = 5;
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final int firstLine = math.max(0, lineNumber - margin);
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final int lastLine = math.min(lines.length, lineNumber + margin);
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print('$name : $route : line $lineNumber of ${lines.length} : $message; nearby lines were:\n ${lines.sublist(firstLine, lastLine).join("\n ")}');
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toStringErrors += 1;
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}
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void verifyToStringOutput(String name, String route, String testString) {
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int lineNumber = 0;
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final List<String> lines = testString.split('\n');
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if (!testString.endsWith('\n'))
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reportToStringError(name, route, lines.length, lines, 'does not end with a line feed');
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for (String line in lines) {
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lineNumber += 1;
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if (line == '' && lineNumber != lines.length) {
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reportToStringError(name, route, lineNumber, lines, 'found empty line');
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} else if (line.contains('Instance of ')) {
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reportToStringError(name, route, lineNumber, lines, 'found a class that does not have its own toString');
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} else if (line.endsWith(' ')) {
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reportToStringError(name, route, lineNumber, lines, 'found a line with trailing whitespace');
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}
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}
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}
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Future<Null> smokeDemo(WidgetTester tester, GalleryDemo demo) async {
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print(demo);
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// Don't use pumpUntilNoTransientCallbacks in this function, because some of
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// the smoketests have infinitely-running animations (e.g. the progress
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// indicators demo).
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await tester.tap(find.text(demo.title));
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await tester.pump(); // Launch the demo.
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await tester.pump(const Duration(milliseconds: 400)); // Wait until the demo has opened.
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expect(find.text(kGalleryTitle), findsNothing);
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// Leave the demo on the screen briefly for manual testing.
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await tester.pump(const Duration(milliseconds: 400));
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// Scroll the demo around a bit.
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await tester.flingFrom(const Offset(400.0, 300.0), const Offset(-100.0, 0.0), 500.0);
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await tester.flingFrom(const Offset(400.0, 300.0), const Offset(0.0, -100.0), 500.0);
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 50));
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await tester.pump(const Duration(milliseconds: 200));
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await tester.pump(const Duration(milliseconds: 400));
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// Verify that the dumps are pretty.
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final String routeName = demo.routeName;
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verifyToStringOutput('debugDumpApp', routeName, WidgetsBinding.instance.renderViewElement.toStringDeep());
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verifyToStringOutput('debugDumpRenderTree', routeName, RendererBinding.instance?.renderView?.toStringDeep());
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verifyToStringOutput('debugDumpLayerTree', routeName, RendererBinding.instance?.renderView?.debugLayer?.toStringDeep());
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// Scroll the demo around a bit more.
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await tester.flingFrom(const Offset(400.0, 300.0), const Offset(-200.0, 0.0), 500.0);
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 50));
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await tester.pump(const Duration(milliseconds: 200));
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await tester.pump(const Duration(milliseconds: 400));
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await tester.flingFrom(const Offset(400.0, 300.0), const Offset(100.0, 0.0), 500.0);
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 400));
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await tester.flingFrom(const Offset(400.0, 300.0), const Offset(0.0, 400.0), 1000.0);
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 400));
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// Go back
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await tester.pageBack();
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await tester.pumpAndSettle();
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await tester.pump(); // Start the pop "back" operation.
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await tester.pump(); // Complete the willPop() Future.
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await tester.pump(const Duration(milliseconds: 400)); // Wait until it has finished.
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}
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Future<Null> smokeOptionsPage(WidgetTester tester) async {
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final Finder showOptionsPageButton = find.byTooltip('Show options page');
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// Show the options page
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await tester.tap(showOptionsPageButton);
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await tester.pumpAndSettle();
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// Switch to the dark theme: first switch control
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await tester.tap(find.byType(Switch).first);
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await tester.pumpAndSettle();
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// Switch back to the light theme: first switch control again
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await tester.tap(find.byType(Switch).first);
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await tester.pumpAndSettle();
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// Popup the text size menu: first menu button, choose 'Small'
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await tester.tap(find.byIcon(Icons.arrow_drop_down).first);
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await tester.pumpAndSettle();
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await tester.tap(find.text('Small'));
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await tester.pumpAndSettle();
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// Popup the text size menu: first menu button, choose 'Normal'
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await tester.tap(find.byIcon(Icons.arrow_drop_down).first);
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await tester.pumpAndSettle();
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await tester.tap(find.text('Normal'));
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await tester.pumpAndSettle();
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// Scroll the 'Send feedback' item into view
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await tester.drag(find.text('Normal'), const Offset(0.0, -1000.0));
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await tester.pumpAndSettle();
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await tester.tap(find.text('Send feedback'));
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await tester.pumpAndSettle();
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// Close the options page
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expect(showOptionsPageButton, findsOneWidget);
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await tester.tap(showOptionsPageButton);
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await tester.pumpAndSettle();
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}
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Future<Null> smokeGallery(WidgetTester tester) async {
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bool sendFeedbackButtonPressed = false;
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await tester.pumpWidget(
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new GalleryApp(
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onSendFeedback: () {
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sendFeedbackButtonPressed = true; // see smokeOptionsPage()
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},
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),
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);
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await tester.pump(); // see https://github.com/flutter/flutter/issues/1865
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await tester.pump(); // triggers a frame
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expect(find.text(kGalleryTitle), findsOneWidget);
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for (GalleryDemoCategory category in kAllGalleryDemoCategories) {
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await tester.tap(find.text(category.name));
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await tester.pumpAndSettle();
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for (GalleryDemo demo in kGalleryCategoryToDemos[category]) {
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Scrollable.ensureVisible(tester.element(find.text(demo.title)), alignment: 0.5);
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await smokeDemo(tester, demo);
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tester.binding.debugAssertNoTransientCallbacks('A transient callback was still active after running $demo');
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}
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await tester.pageBack();
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await tester.pumpAndSettle();
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}
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expect(toStringErrors, 0);
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await smokeOptionsPage(tester);
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expect(sendFeedbackButtonPressed, true);
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}
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void main() {
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testWidgets('Flutter Gallery app smoke test', smokeGallery);
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testWidgets('Flutter Gallery app smoke test with semantics', (WidgetTester tester) async {
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RendererBinding.instance.setSemanticsEnabled(true);
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await smokeGallery(tester);
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RendererBinding.instance.setSemanticsEnabled(false);
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});
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}
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