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Add getRenderTree() to Flutter Driver (#7007)

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Returns a dump of the application's render tree.
This commit is contained in:
Chris Bracken 2016-11-28 11:11:03 -08:00 committed by GitHub
parent dba0e3f6ae
commit c4afe9589b
3 changed files with 51 additions and 0 deletions
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6
packages/flutter_driver/lib/src/driver.dart
View file

@ -16,6 +16,7 @@ import 'gesture.dart';
import 'health.dart';
import 'input.dart';
import 'message.dart';
import 'render_tree.dart';
import 'timeline.dart';
/// Timeline stream identifier.
@ -244,6 +245,11 @@ class FlutterDriver {
return Health.fromJson(await _sendCommand(new GetHealth()));
}
/// Returns a dump of the render tree.
Future<RenderTree> getRenderTree() async {
return RenderTree.fromJson(await _sendCommand(new GetRenderTree()));
}
/// Taps at the center of the widget located by [finder].
Future<Null> tap(SerializableFinder finder) async {
await _sendCommand(new Tap(finder));

8
packages/flutter_driver/lib/src/extension.dart
View file

@ -6,6 +6,7 @@ import 'dart:async';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart' show RendererBinding;
import 'package:flutter/scheduler.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
@ -16,6 +17,7 @@ import 'gesture.dart';
import 'health.dart';
import 'input.dart';
import 'message.dart';
import 'render_tree.dart';
const String _extensionMethodName = 'driver';
const String _extensionMethod = 'ext.flutter.$_extensionMethodName';
@ -61,6 +63,7 @@ class _FlutterDriverExtension {
_FlutterDriverExtension._() {
_commandHandlers.addAll(<String, CommandHandlerCallback>{
'get_health': _getHealth,
'get_render_tree': _getRenderTree,
'tap': _tap,
'get_text': _getText,
'scroll': _scroll,
@ -72,6 +75,7 @@ class _FlutterDriverExtension {
_commandDeserializers.addAll(<String, CommandDeserializerCallback>{
'get_health': GetHealth.deserialize,
'get_render_tree': GetRenderTree.deserialize,
'tap': Tap.deserialize,
'get_text': GetText.deserialize,
'scroll': Scroll.deserialize,
@ -135,6 +139,10 @@ class _FlutterDriverExtension {
Future<Health> _getHealth(Command command) async => new Health(HealthStatus.ok);
Future<RenderTree> _getRenderTree(Command command) async {
return new RenderTree(RendererBinding.instance?.renderView?.toStringDeep());
}
/// Runs `finder` repeatedly until it finds one or more [Element]s, or times out.
///
/// The timeout is five seconds.

37
packages/flutter_driver/lib/src/render_tree.dart Normal file
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@ -0,0 +1,37 @@
// Copyright 2016 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 'message.dart';
/// A request for a string representation of the render tree.
class GetRenderTree implements Command {
@override
final String kind = 'get_render_tree';
/// Deserializes the command from JSON generated by [serialize].
static GetRenderTree deserialize(Map<String, String> json) => new GetRenderTree();
@override
Map<String, String> serialize() => const <String, String>{};
}
/// A string representation of the render tree.
class RenderTree extends Result {
/// Creates a [RenderTree] object with the given string representation.
RenderTree(this.tree);
/// Deserializes the result from JSON.
static RenderTree fromJson(Map<String, dynamic> json) {
return new RenderTree(json['tree']);
}
/// String representation of the render tree.
final String tree;
@override
Map<String, dynamic> toJson() => <String, dynamic>{
'tree': tree
};
}