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876 lines
33 KiB
Dart
876 lines
33 KiB
Dart
// Copyright 2014 The Flutter 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:ui' show SemanticsFlag;
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import 'package:flutter/foundation.dart';
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import 'package:flutter/physics.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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export 'dart:ui' show SemanticsFlag, SemanticsAction;
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export 'package:flutter/rendering.dart' show SemanticsData;
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const String _matcherHelp = 'Try dumping the semantics with debugDumpSemanticsTree(DebugSemanticsDumpOrder.inverseHitTest) from the package:flutter/rendering.dart library to see what the semantics tree looks like.';
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/// Test semantics data that is compared against real semantics tree.
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///
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/// Useful with [hasSemantics] and [SemanticsTester] to test the contents of the
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/// semantics tree.
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class TestSemantics {
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/// Creates an object with some test semantics data.
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///
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/// The [id] field is required. The root node has an id of zero. Other nodes
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/// are given a unique id when they are created, in a predictable fashion, and
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/// so these values can be hard-coded.
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///
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/// The [rect] field is required and has no default. Convenient values are
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/// available:
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///
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/// * [TestSemantics.rootRect]: 2400x1600, the test screen's size in physical
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/// pixels, useful for the node with id zero.
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///
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/// * [TestSemantics.fullScreen] 800x600, the test screen's size in logical
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/// pixels, useful for other full-screen widgets.
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TestSemantics({
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this.id,
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this.flags = 0,
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this.actions = 0,
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this.label = '',
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this.value = '',
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this.increasedValue = '',
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this.decreasedValue = '',
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this.hint = '',
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this.textDirection,
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this.rect,
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this.transform,
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this.elevation,
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this.thickness,
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this.textSelection,
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this.children = const <TestSemantics>[],
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this.scrollIndex,
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this.scrollChildren,
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Iterable<SemanticsTag>? tags,
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}) : assert(flags is int || flags is List<SemanticsFlag>),
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assert(actions is int || actions is List<SemanticsAction>),
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assert(label != null),
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assert(value != null),
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assert(increasedValue != null),
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assert(decreasedValue != null),
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assert(hint != null),
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assert(children != null),
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tags = tags?.toSet() ?? <SemanticsTag>{};
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/// Creates an object with some test semantics data, with the [id] and [rect]
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/// set to the appropriate values for the root node.
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TestSemantics.root({
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this.flags = 0,
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this.actions = 0,
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this.label = '',
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this.value = '',
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this.increasedValue = '',
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this.decreasedValue = '',
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this.hint = '',
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this.textDirection,
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this.transform,
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this.textSelection,
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this.children = const <TestSemantics>[],
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this.scrollIndex,
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this.scrollChildren,
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Iterable<SemanticsTag>? tags,
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}) : id = 0,
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assert(flags is int || flags is List<SemanticsFlag>),
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assert(actions is int || actions is List<SemanticsAction>),
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assert(label != null),
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assert(increasedValue != null),
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assert(decreasedValue != null),
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assert(value != null),
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assert(hint != null),
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rect = TestSemantics.rootRect,
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elevation = 0.0,
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thickness = 0.0,
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assert(children != null),
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tags = tags?.toSet() ?? <SemanticsTag>{};
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/// Creates an object with some test semantics data, with the [id] and [rect]
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/// set to the appropriate values for direct children of the root node.
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///
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/// The [transform] is set to a 3.0 scale (to account for the
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/// [dart:ui.FlutterView.devicePixelRatio] being 3.0 on the test
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/// pseudo-device).
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///
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/// The [rect] field is required and has no default. The
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/// [TestSemantics.fullScreen] property may be useful as a value; it describes
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/// an 800x600 rectangle, which is the test screen's size in logical pixels.
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TestSemantics.rootChild({
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this.id,
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this.flags = 0,
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this.actions = 0,
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this.label = '',
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this.hint = '',
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this.value = '',
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this.increasedValue = '',
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this.decreasedValue = '',
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this.textDirection,
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this.rect,
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Matrix4? transform,
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this.elevation,
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this.thickness,
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this.textSelection,
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this.children = const <TestSemantics>[],
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this.scrollIndex,
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this.scrollChildren,
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Iterable<SemanticsTag>? tags,
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}) : assert(flags is int || flags is List<SemanticsFlag>),
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assert(actions is int || actions is List<SemanticsAction>),
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assert(label != null),
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assert(value != null),
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assert(increasedValue != null),
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assert(decreasedValue != null),
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assert(hint != null),
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transform = _applyRootChildScale(transform),
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assert(children != null),
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tags = tags?.toSet() ?? <SemanticsTag>{};
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/// The unique identifier for this node.
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///
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/// The root node has an id of zero. Other nodes are given a unique id when
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/// they are created.
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final int? id;
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/// The [SemanticsFlag]s set on this node.
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///
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/// There are two ways to specify this property: as an `int` that encodes the
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/// flags as a bit field, or as a `List<SemanticsFlag>` that are _on_.
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///
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/// Using `List<SemanticsFlag>` is recommended due to better readability.
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final dynamic flags;
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/// The [SemanticsAction]s set on this node.
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///
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/// There are two ways to specify this property: as an `int` that encodes the
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/// actions as a bit field, or as a `List<SemanticsAction>`.
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///
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/// Using `List<SemanticsAction>` is recommended due to better readability.
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///
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/// The tester does not check the function corresponding to the action, but
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/// only its existence.
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final dynamic actions;
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/// A textual description of this node.
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final String label;
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/// A textual description for the value of this node.
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final String value;
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/// What [value] will become after [SemanticsAction.increase] has been
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/// performed.
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final String increasedValue;
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/// What [value] will become after [SemanticsAction.decrease] has been
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/// performed.
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final String decreasedValue;
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/// A brief textual description of the result of the action that can be
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/// performed on this node.
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final String hint;
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/// The reading direction of the [label].
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///
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/// Even if this is not set, the [hasSemantics] matcher will verify that if a
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/// label is present on the [SemanticsNode], a [SemanticsNode.textDirection]
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/// is also set.
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final TextDirection? textDirection;
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/// The bounding box for this node in its coordinate system.
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///
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/// Convenient values are available:
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///
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/// * [TestSemantics.rootRect]: 2400x1600, the test screen's size in physical
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/// pixels, useful for the node with id zero.
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///
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/// * [TestSemantics.fullScreen] 800x600, the test screen's size in logical
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/// pixels, useful for other full-screen widgets.
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final Rect? rect;
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/// The test screen's size in physical pixels, typically used as the [rect]
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/// for the node with id zero.
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///
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/// See also:
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///
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/// * [new TestSemantics.root], which uses this value to describe the root
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/// node.
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static const Rect rootRect = Rect.fromLTWH(0.0, 0.0, 2400.0, 1800.0);
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/// The test screen's size in logical pixels, useful for the [rect] of
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/// full-screen widgets other than the root node.
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static const Rect fullScreen = Rect.fromLTWH(0.0, 0.0, 800.0, 600.0);
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/// The transform from this node's coordinate system to its parent's coordinate system.
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///
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/// By default, the transform is null, which represents the identity
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/// transformation (i.e., that this node has the same coordinate system as its
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/// parent).
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final Matrix4? transform;
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/// The elevation of this node relative to the parent node.
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///
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/// See also:
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///
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/// * [SemanticsConfiguration.elevation] for a detailed discussion regarding
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/// elevation and semantics.
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final double? elevation;
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/// The extend that this node occupies in z-direction starting at [elevation].
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///
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/// See also:
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///
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/// * [SemanticsConfiguration.thickness] for a more detailed definition.
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final double? thickness;
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/// The index of the first visible semantic node within a scrollable.
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final int? scrollIndex;
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/// The total number of semantic nodes within a scrollable.
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final int? scrollChildren;
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final TextSelection? textSelection;
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static Matrix4 _applyRootChildScale(Matrix4? transform) {
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final Matrix4 result = Matrix4.diagonal3Values(3.0, 3.0, 1.0);
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if (transform != null)
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result.multiply(transform);
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return result;
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}
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/// The children of this node.
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final List<TestSemantics> children;
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/// The tags of this node.
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final Set<SemanticsTag> tags;
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bool _matches(
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SemanticsNode? node,
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Map<dynamic, dynamic> matchState, {
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bool ignoreRect = false,
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bool ignoreTransform = false,
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bool ignoreId = false,
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DebugSemanticsDumpOrder childOrder = DebugSemanticsDumpOrder.inverseHitTest,
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}) {
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bool fail(String message) {
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matchState[TestSemantics] = message;
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return false;
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}
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if (node == null)
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return fail('could not find node with id $id.');
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if (!ignoreId && id != node.id)
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return fail('expected node id $id but found id ${node.id}.');
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final SemanticsData nodeData = node.getSemanticsData();
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final int flagsBitmask = flags is int
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? flags as int
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: (flags as List<SemanticsFlag>).fold<int>(0, (int bitmask, SemanticsFlag flag) => bitmask | flag.index);
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if (flagsBitmask != nodeData.flags)
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return fail('expected node id $id to have flags $flags but found flags ${nodeData.flags}.');
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final int actionsBitmask = actions is int
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? actions as int
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: (actions as List<SemanticsAction>).fold<int>(0, (int bitmask, SemanticsAction action) => bitmask | action.index);
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if (actionsBitmask != nodeData.actions)
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return fail('expected node id $id to have actions $actions but found actions ${nodeData.actions}.');
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if (label != nodeData.label)
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return fail('expected node id $id to have label "$label" but found label "${nodeData.label}".');
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if (value != nodeData.value)
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return fail('expected node id $id to have value "$value" but found value "${nodeData.value}".');
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if (increasedValue != nodeData.increasedValue)
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return fail('expected node id $id to have increasedValue "$increasedValue" but found value "${nodeData.increasedValue}".');
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if (decreasedValue != nodeData.decreasedValue)
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return fail('expected node id $id to have decreasedValue "$decreasedValue" but found value "${nodeData.decreasedValue}".');
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if (hint != nodeData.hint)
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return fail('expected node id $id to have hint "$hint" but found hint "${nodeData.hint}".');
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if (textDirection != null && textDirection != nodeData.textDirection)
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return fail('expected node id $id to have textDirection "$textDirection" but found "${nodeData.textDirection}".');
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if ((nodeData.label != '' || nodeData.value != '' || nodeData.hint != '' || node.increasedValue != '' || node.decreasedValue != '') && nodeData.textDirection == null)
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return fail('expected node id $id, which has a label, value, or hint, to have a textDirection, but it did not.');
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if (!ignoreRect && rect != nodeData.rect)
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return fail('expected node id $id to have rect $rect but found rect ${nodeData.rect}.');
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if (!ignoreTransform && transform != nodeData.transform)
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return fail('expected node id $id to have transform $transform but found transform:\n${nodeData.transform}.');
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if (elevation != null && elevation != nodeData.elevation) {
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return fail('expected node id $id to have elevation $elevation but found elevation:\n${nodeData.elevation}.');
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}
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if (thickness != null && thickness != nodeData.thickness) {
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return fail('expected node id $id to have thickness $thickness but found thickness:\n${nodeData.thickness}.');
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}
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if (textSelection?.baseOffset != nodeData.textSelection?.baseOffset || textSelection?.extentOffset != nodeData.textSelection?.extentOffset) {
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return fail('expected node id $id to have textSelection [${textSelection?.baseOffset}, ${textSelection?.end}] but found: [${nodeData.textSelection?.baseOffset}, ${nodeData.textSelection?.extentOffset}].');
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}
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if (scrollIndex != null && scrollIndex != nodeData.scrollIndex) {
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return fail('expected node id $id to have scrollIndex $scrollIndex but found scrollIndex ${nodeData.scrollIndex}.');
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}
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if (scrollChildren != null && scrollChildren != nodeData.scrollChildCount) {
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return fail('expected node id $id to have scrollIndex $scrollChildren but found scrollIndex ${nodeData.scrollChildCount}.');
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}
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final int childrenCount = node.mergeAllDescendantsIntoThisNode ? 0 : node.childrenCount;
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if (children.length != childrenCount)
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return fail('expected node id $id to have ${children.length} child${ children.length == 1 ? "" : "ren" } but found $childrenCount.');
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if (children.isEmpty)
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return true;
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bool result = true;
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final Iterator<TestSemantics> it = children.iterator;
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for (final SemanticsNode child in node.debugListChildrenInOrder(childOrder)) {
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it.moveNext();
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final bool childMatches = it.current._matches(
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child,
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matchState,
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ignoreRect: ignoreRect,
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ignoreTransform: ignoreTransform,
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ignoreId: ignoreId,
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childOrder: childOrder,
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);
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if (!childMatches) {
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result = false;
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return false;
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}
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}
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if (it.moveNext()) {
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return false;
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}
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return result;
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}
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@override
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String toString([ int indentAmount = 0 ]) {
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final String indent = ' ' * indentAmount;
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final StringBuffer buf = StringBuffer();
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buf.writeln('$indent${objectRuntimeType(this, 'TestSemantics')}(');
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if (id != null)
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buf.writeln('$indent id: $id,');
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if (flags is int && flags != 0 || flags is List<SemanticsFlag> && (flags as List<SemanticsFlag>).isNotEmpty)
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buf.writeln('$indent flags: ${SemanticsTester._flagsToSemanticsFlagExpression(flags)},');
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if (actions is int && actions != 0 || actions is List<SemanticsAction> && (actions as List<SemanticsAction>).isNotEmpty)
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buf.writeln('$indent actions: ${SemanticsTester._actionsToSemanticsActionExpression(actions)},');
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if (label != null && label != '')
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buf.writeln("$indent label: '$label',");
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if (value != null && value != '')
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buf.writeln("$indent value: '$value',");
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if (increasedValue != null && increasedValue != '')
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buf.writeln("$indent increasedValue: '$increasedValue',");
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if (decreasedValue != null && decreasedValue != '')
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buf.writeln("$indent decreasedValue: '$decreasedValue',");
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if (hint != null && hint != '')
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buf.writeln("$indent hint: '$hint',");
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if (textDirection != null)
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buf.writeln('$indent textDirection: $textDirection,');
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if (textSelection?.isValid ?? false)
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buf.writeln('$indent textSelection:\n[${textSelection!.start}, ${textSelection!.end}],');
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if (scrollIndex != null)
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buf.writeln('$indent scrollIndex: $scrollIndex,');
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if (rect != null)
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buf.writeln('$indent rect: $rect,');
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if (transform != null)
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buf.writeln('$indent transform:\n${transform.toString().trim().split('\n').map<String>((String line) => '$indent $line').join('\n')},');
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if (elevation != null)
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buf.writeln('$indent elevation: $elevation,');
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if (thickness != null)
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buf.writeln('$indent thickness: $thickness,');
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buf.writeln('$indent children: <TestSemantics>[');
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for (final TestSemantics child in children) {
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buf.writeln('${child.toString(indentAmount + 2)},');
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}
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buf.writeln('$indent ],');
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buf.write('$indent)');
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return buf.toString();
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}
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}
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/// Ensures that the given widget tester has a semantics tree to test.
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///
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/// Useful with [hasSemantics] to test the contents of the semantics tree.
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class SemanticsTester {
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/// Creates a semantics tester for the given widget tester.
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///
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/// You should call [dispose] at the end of a test that creates a semantics
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/// tester.
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SemanticsTester(this.tester) {
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_semanticsHandle = tester.binding.pipelineOwner.ensureSemantics();
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// This _extra_ clean-up is needed for the case when a test fails and
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// therefore fails to call dispose() explicitly. The test is still required
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// to call dispose() explicitly, because the semanticsOwner check is
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// performed irrespective of whether the owner was created via
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// SemanticsTester or directly. When the test succeeds, this tear-down
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// becomes a no-op.
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addTearDown(dispose);
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}
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/// The widget tester that this object is testing the semantics of.
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final WidgetTester tester;
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SemanticsHandle? _semanticsHandle;
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/// Release resources held by this semantics tester.
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///
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/// Call this function at the end of any test that uses a semantics tester. It
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/// is OK to call this function multiple times. If the resources have already
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/// been released, the subsequent calls have no effect.
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@mustCallSuper
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void dispose() {
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_semanticsHandle?.dispose();
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_semanticsHandle = null;
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}
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@override
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String toString() => 'SemanticsTester for ${tester.binding.pipelineOwner.semanticsOwner?.rootSemanticsNode}';
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bool _stringAttributesEqual(List<StringAttribute> first, List<StringAttribute> second) {
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if (first.length != second.length)
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return false;
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for (int i = 0; i < first.length; i++) {
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if (first[i] is SpellOutStringAttribute &&
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(second[i] is! SpellOutStringAttribute ||
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second[i].range != first[i].range)) {
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return false;
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}
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if (first[i] is LocaleStringAttribute &&
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(second[i] is! LocaleStringAttribute ||
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second[i].range != first[i].range ||
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(second[i] as LocaleStringAttribute).locale != (second[i] as LocaleStringAttribute).locale)) {
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return false;
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}
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}
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return true;
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}
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/// Returns all semantics nodes in the current semantics tree whose properties
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/// match the non-null arguments.
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///
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/// If multiple arguments are non-null, each of the returned nodes must match
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/// on all of them.
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///
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/// If `ancestor` is not null, only the descendants of it are returned.
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Iterable<SemanticsNode> nodesWith({
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AttributedString? attributedLabel,
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AttributedString? attributedValue,
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AttributedString? attributedHint,
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String? label,
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String? value,
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String? hint,
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TextDirection? textDirection,
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List<SemanticsAction>? actions,
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List<SemanticsFlag>? flags,
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double? scrollPosition,
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double? scrollExtentMax,
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double? scrollExtentMin,
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int? currentValueLength,
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int? maxValueLength,
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SemanticsNode? ancestor,
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}) {
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bool checkNode(SemanticsNode node) {
|
|
if (label != null && node.label != label)
|
|
return false;
|
|
if (attributedLabel != null &&
|
|
(attributedLabel.string != node.attributedLabel.string ||
|
|
!_stringAttributesEqual(attributedLabel.attributes, node.attributedLabel.attributes))) {
|
|
return false;
|
|
}
|
|
if (value != null && node.value != value)
|
|
return false;
|
|
if (attributedValue != null &&
|
|
(attributedValue.string != node.attributedValue.string ||
|
|
!_stringAttributesEqual(attributedValue.attributes, node.attributedValue.attributes))) {
|
|
return false;
|
|
}
|
|
if (hint != null && node.hint != hint)
|
|
return false;
|
|
if (attributedHint != null &&
|
|
(attributedHint.string != node.attributedHint.string ||
|
|
!_stringAttributesEqual(attributedHint.attributes, node.attributedHint.attributes))) {
|
|
return false;
|
|
}
|
|
if (textDirection != null && node.textDirection != textDirection)
|
|
return false;
|
|
if (actions != null) {
|
|
final int expectedActions = actions.fold<int>(0, (int value, SemanticsAction action) => value | action.index);
|
|
final int actualActions = node.getSemanticsData().actions;
|
|
if (expectedActions != actualActions)
|
|
return false;
|
|
}
|
|
if (flags != null) {
|
|
final int expectedFlags = flags.fold<int>(0, (int value, SemanticsFlag flag) => value | flag.index);
|
|
final int actualFlags = node.getSemanticsData().flags;
|
|
if (expectedFlags != actualFlags)
|
|
return false;
|
|
}
|
|
if (scrollPosition != null && !nearEqual(node.scrollPosition, scrollPosition, 0.1))
|
|
return false;
|
|
if (scrollExtentMax != null && !nearEqual(node.scrollExtentMax, scrollExtentMax, 0.1))
|
|
return false;
|
|
if (scrollExtentMin != null && !nearEqual(node.scrollExtentMin, scrollExtentMin, 0.1))
|
|
return false;
|
|
if (currentValueLength != null && node.currentValueLength != currentValueLength) {
|
|
return false;
|
|
}
|
|
if (maxValueLength != null && node.maxValueLength != maxValueLength) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
final List<SemanticsNode> result = <SemanticsNode>[];
|
|
bool visit(SemanticsNode node) {
|
|
if (checkNode(node)) {
|
|
result.add(node);
|
|
}
|
|
node.visitChildren(visit);
|
|
return true;
|
|
}
|
|
if (ancestor != null) {
|
|
visit(ancestor);
|
|
} else {
|
|
visit(tester.binding.pipelineOwner.semanticsOwner!.rootSemanticsNode!);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/// Generates an expression that creates a [TestSemantics] reflecting the
|
|
/// current tree of [SemanticsNode]s.
|
|
///
|
|
/// Use this method to generate code for unit tests. It works similar to
|
|
/// screenshot testing. The very first time you add semantics to a widget you
|
|
/// verify manually that the widget behaves correctly. You then use this
|
|
/// method to generate test code for this widget.
|
|
///
|
|
/// Example:
|
|
///
|
|
/// ```dart
|
|
/// testWidgets('generate code for MyWidget', (WidgetTester tester) async {
|
|
/// var semantics = SemanticsTester(tester);
|
|
/// await tester.pumpWidget(MyWidget());
|
|
/// print(semantics.generateTestSemanticsExpressionForCurrentSemanticsTree());
|
|
/// semantics.dispose();
|
|
/// });
|
|
/// ```
|
|
///
|
|
/// You can now copy the code printed to the console into a unit test:
|
|
///
|
|
/// ```dart
|
|
/// testWidgets('generate code for MyWidget', (WidgetTester tester) async {
|
|
/// var semantics = SemanticsTester(tester);
|
|
/// await tester.pumpWidget(MyWidget());
|
|
/// expect(semantics, hasSemantics(
|
|
/// // Generated code:
|
|
/// TestSemantics(
|
|
/// ... properties and child nodes ...
|
|
/// ),
|
|
/// ignoreRect: true,
|
|
/// ignoreTransform: true,
|
|
/// ignoreId: true,
|
|
/// ));
|
|
/// semantics.dispose();
|
|
/// });
|
|
/// ```
|
|
///
|
|
/// At this point the unit test should automatically pass because it was
|
|
/// generated from the actual [SemanticsNode]s. Next time the semantics tree
|
|
/// changes, the test code may either be updated manually, or regenerated and
|
|
/// replaced using this method again.
|
|
///
|
|
/// Avoid submitting huge piles of generated test code. This will make test
|
|
/// code hard to review and it will make it tempting to regenerate test code
|
|
/// every time and ignore potential regressions. Make sure you do not
|
|
/// over-test. Prefer breaking your widgets into smaller widgets and test them
|
|
/// individually.
|
|
String generateTestSemanticsExpressionForCurrentSemanticsTree(DebugSemanticsDumpOrder childOrder) {
|
|
final SemanticsNode? node = tester.binding.pipelineOwner.semanticsOwner?.rootSemanticsNode;
|
|
return _generateSemanticsTestForNode(node, 0, childOrder);
|
|
}
|
|
|
|
static String _flagsToSemanticsFlagExpression(dynamic flags) {
|
|
Iterable<SemanticsFlag> list;
|
|
if (flags is int) {
|
|
list = SemanticsFlag.values.values
|
|
.where((SemanticsFlag flag) => (flag.index & flags) != 0);
|
|
} else {
|
|
list = flags as List<SemanticsFlag>;
|
|
}
|
|
return '<SemanticsFlag>[${list.join(', ')}]';
|
|
}
|
|
|
|
static String _tagsToSemanticsTagExpression(Set<SemanticsTag> tags) {
|
|
return '<SemanticsTag>[${tags.map<String>((SemanticsTag tag) => "const SemanticsTag('${tag.name}')").join(', ')}]';
|
|
}
|
|
|
|
static String _actionsToSemanticsActionExpression(dynamic actions) {
|
|
Iterable<SemanticsAction> list;
|
|
if (actions is int) {
|
|
list = SemanticsAction.values.values
|
|
.where((SemanticsAction action) => (action.index & actions) != 0);
|
|
} else {
|
|
list = actions as List<SemanticsAction>;
|
|
}
|
|
return '<SemanticsAction>[${list.join(', ')}]';
|
|
}
|
|
|
|
/// Recursively generates [TestSemantics] code for [node] and its children,
|
|
/// indenting the expression by `indentAmount`.
|
|
static String _generateSemanticsTestForNode(SemanticsNode? node, int indentAmount, DebugSemanticsDumpOrder childOrder) {
|
|
if (node == null)
|
|
return 'null';
|
|
final String indent = ' ' * indentAmount;
|
|
final StringBuffer buf = StringBuffer();
|
|
final SemanticsData nodeData = node.getSemanticsData();
|
|
final bool isRoot = node.id == 0;
|
|
buf.writeln('TestSemantics${isRoot ? '.root': ''}(');
|
|
if (!isRoot)
|
|
buf.writeln(' id: ${node.id},');
|
|
if (nodeData.tags != null)
|
|
buf.writeln(' tags: ${_tagsToSemanticsTagExpression(nodeData.tags!)},');
|
|
if (nodeData.flags != 0)
|
|
buf.writeln(' flags: ${_flagsToSemanticsFlagExpression(nodeData.flags)},');
|
|
if (nodeData.actions != 0)
|
|
buf.writeln(' actions: ${_actionsToSemanticsActionExpression(nodeData.actions)},');
|
|
if (node.label != null && node.label.isNotEmpty) {
|
|
// Escape newlines and text directionality control characters.
|
|
final String escapedLabel = node.label.replaceAll('\n', r'\n').replaceAll('\u202a', r'\u202a').replaceAll('\u202c', r'\u202c');
|
|
buf.writeln(" label: '$escapedLabel',");
|
|
}
|
|
if (node.value != null && node.value.isNotEmpty)
|
|
buf.writeln(" value: '${node.value}',");
|
|
if (node.increasedValue != null && node.increasedValue.isNotEmpty)
|
|
buf.writeln(" increasedValue: '${node.increasedValue}',");
|
|
if (node.decreasedValue != null && node.decreasedValue.isNotEmpty)
|
|
buf.writeln(" decreasedValue: '${node.decreasedValue}',");
|
|
if (node.hint != null && node.hint.isNotEmpty)
|
|
buf.writeln(" hint: '${node.hint}',");
|
|
if (node.textDirection != null)
|
|
buf.writeln(' textDirection: ${node.textDirection},');
|
|
if (node.hasChildren) {
|
|
buf.writeln(' children: <TestSemantics>[');
|
|
for (final SemanticsNode child in node.debugListChildrenInOrder(childOrder)) {
|
|
buf
|
|
..write(_generateSemanticsTestForNode(child, 2, childOrder))
|
|
..writeln(',');
|
|
}
|
|
buf.writeln(' ],');
|
|
}
|
|
|
|
buf.write(')');
|
|
return buf.toString().split('\n').map<String>((String l) => '$indent$l').join('\n');
|
|
}
|
|
}
|
|
|
|
class _HasSemantics extends Matcher {
|
|
const _HasSemantics(
|
|
this._semantics, {
|
|
required this.ignoreRect,
|
|
required this.ignoreTransform,
|
|
required this.ignoreId,
|
|
required this.childOrder,
|
|
}) : assert(_semantics != null),
|
|
assert(ignoreRect != null),
|
|
assert(ignoreId != null),
|
|
assert(ignoreTransform != null),
|
|
assert(childOrder != null);
|
|
|
|
final TestSemantics _semantics;
|
|
final bool ignoreRect;
|
|
final bool ignoreTransform;
|
|
final bool ignoreId;
|
|
final DebugSemanticsDumpOrder childOrder;
|
|
|
|
@override
|
|
bool matches(covariant SemanticsTester item, Map<dynamic, dynamic> matchState) {
|
|
final bool doesMatch = _semantics._matches(
|
|
item.tester.binding.pipelineOwner.semanticsOwner?.rootSemanticsNode,
|
|
matchState,
|
|
ignoreTransform: ignoreTransform,
|
|
ignoreRect: ignoreRect,
|
|
ignoreId: ignoreId,
|
|
childOrder: childOrder,
|
|
);
|
|
if (!doesMatch) {
|
|
matchState['would-match'] = item.generateTestSemanticsExpressionForCurrentSemanticsTree(childOrder);
|
|
}
|
|
if (item.tester.binding.pipelineOwner.semanticsOwner == null) {
|
|
matchState['additional-notes'] = '(Check that the SemanticsTester has not been disposed early.)';
|
|
}
|
|
return doesMatch;
|
|
}
|
|
|
|
@override
|
|
Description describe(Description description) {
|
|
return description.add('semantics node matching:\n$_semantics');
|
|
}
|
|
|
|
String _indent(String? text) {
|
|
return text.toString().trimRight().split('\n').map<String>((String line) => ' $line').join('\n');
|
|
}
|
|
|
|
@override
|
|
Description describeMismatch(dynamic item, Description mismatchDescription, Map<dynamic, dynamic> matchState, bool verbose) {
|
|
Description result = mismatchDescription
|
|
.add('${matchState[TestSemantics]}\n')
|
|
.add('Current SemanticsNode tree:\n')
|
|
.add(_indent(RendererBinding.instance.renderView.debugSemantics?.toStringDeep(childOrder: childOrder)))
|
|
.add('\n')
|
|
.add('The semantics tree would have matched the following configuration:\n')
|
|
.add(_indent(matchState['would-match'] as String));
|
|
if (matchState.containsKey('additional-notes')) {
|
|
result = result
|
|
.add('\n')
|
|
.add(matchState['additional-notes'] as String);
|
|
}
|
|
return result;
|
|
}
|
|
}
|
|
|
|
/// Asserts that a [SemanticsTester] has a semantics tree that exactly matches the given semantics.
|
|
Matcher hasSemantics(
|
|
TestSemantics semantics, {
|
|
bool ignoreRect = false,
|
|
bool ignoreTransform = false,
|
|
bool ignoreId = false,
|
|
DebugSemanticsDumpOrder childOrder = DebugSemanticsDumpOrder.traversalOrder,
|
|
}) {
|
|
return _HasSemantics(
|
|
semantics,
|
|
ignoreRect: ignoreRect,
|
|
ignoreTransform: ignoreTransform,
|
|
ignoreId: ignoreId,
|
|
childOrder: childOrder,
|
|
);
|
|
}
|
|
|
|
class _IncludesNodeWith extends Matcher {
|
|
const _IncludesNodeWith({
|
|
this.attributedLabel,
|
|
this.attributedValue,
|
|
this.attributedHint,
|
|
this.label,
|
|
this.value,
|
|
this.hint,
|
|
this.textDirection,
|
|
this.actions,
|
|
this.flags,
|
|
this.scrollPosition,
|
|
this.scrollExtentMax,
|
|
this.scrollExtentMin,
|
|
this.maxValueLength,
|
|
this.currentValueLength,
|
|
}) : assert(
|
|
label != null ||
|
|
value != null ||
|
|
actions != null ||
|
|
flags != null ||
|
|
scrollPosition != null ||
|
|
scrollExtentMax != null ||
|
|
scrollExtentMin != null ||
|
|
maxValueLength != null ||
|
|
currentValueLength != null,
|
|
);
|
|
final AttributedString? attributedLabel;
|
|
final AttributedString? attributedValue;
|
|
final AttributedString? attributedHint;
|
|
final String? label;
|
|
final String? value;
|
|
final String? hint;
|
|
final TextDirection? textDirection;
|
|
final List<SemanticsAction>? actions;
|
|
final List<SemanticsFlag>? flags;
|
|
final double? scrollPosition;
|
|
final double? scrollExtentMax;
|
|
final double? scrollExtentMin;
|
|
final int? currentValueLength;
|
|
final int? maxValueLength;
|
|
|
|
@override
|
|
bool matches(covariant SemanticsTester item, Map<dynamic, dynamic> matchState) {
|
|
return item.nodesWith(
|
|
attributedLabel: attributedLabel,
|
|
attributedValue: attributedValue,
|
|
attributedHint: attributedHint,
|
|
label: label,
|
|
value: value,
|
|
hint: hint,
|
|
textDirection: textDirection,
|
|
actions: actions,
|
|
flags: flags,
|
|
scrollPosition: scrollPosition,
|
|
scrollExtentMax: scrollExtentMax,
|
|
scrollExtentMin: scrollExtentMin,
|
|
currentValueLength: currentValueLength,
|
|
maxValueLength: maxValueLength,
|
|
).isNotEmpty;
|
|
}
|
|
|
|
@override
|
|
Description describe(Description description) {
|
|
return description.add('includes node with $_configAsString');
|
|
}
|
|
|
|
@override
|
|
Description describeMismatch(dynamic item, Description mismatchDescription, Map<dynamic, dynamic> matchState, bool verbose) {
|
|
return mismatchDescription.add('could not find node with $_configAsString.\n$_matcherHelp');
|
|
}
|
|
|
|
String get _configAsString {
|
|
final List<String> strings = <String>[
|
|
if (label != null) 'label "$label"',
|
|
if (value != null) 'value "$value"',
|
|
if (hint != null) 'hint "$hint"',
|
|
if (textDirection != null) ' (${textDirection!.name})',
|
|
if (actions != null) 'actions "${actions!.join(', ')}"',
|
|
if (flags != null) 'flags "${flags!.join(', ')}"',
|
|
if (scrollPosition != null) 'scrollPosition "$scrollPosition"',
|
|
if (scrollExtentMax != null) 'scrollExtentMax "$scrollExtentMax"',
|
|
if (scrollExtentMin != null) 'scrollExtentMin "$scrollExtentMin"',
|
|
if (currentValueLength != null) 'currentValueLength "$currentValueLength"',
|
|
if (maxValueLength != null) 'maxValueLength "$maxValueLength"',
|
|
];
|
|
return strings.join(', ');
|
|
}
|
|
}
|
|
|
|
/// Asserts that a node in the semantics tree of [SemanticsTester] has `label`,
|
|
/// `textDirection`, and `actions`.
|
|
///
|
|
/// If null is provided for an argument, it will match against any value.
|
|
Matcher includesNodeWith({
|
|
String? label,
|
|
AttributedString? attributedLabel,
|
|
String? value,
|
|
AttributedString? attributedValue,
|
|
String? hint,
|
|
AttributedString? attributedHint,
|
|
TextDirection? textDirection,
|
|
List<SemanticsAction>? actions,
|
|
List<SemanticsFlag>? flags,
|
|
double? scrollPosition,
|
|
double? scrollExtentMax,
|
|
double? scrollExtentMin,
|
|
int? maxValueLength,
|
|
int? currentValueLength,
|
|
}) {
|
|
return _IncludesNodeWith(
|
|
label: label,
|
|
attributedLabel: attributedLabel,
|
|
value: value,
|
|
attributedValue: attributedValue,
|
|
hint: hint,
|
|
attributedHint: attributedHint,
|
|
textDirection: textDirection,
|
|
actions: actions,
|
|
flags: flags,
|
|
scrollPosition: scrollPosition,
|
|
scrollExtentMax: scrollExtentMax,
|
|
scrollExtentMin: scrollExtentMin,
|
|
maxValueLength: maxValueLength,
|
|
currentValueLength: currentValueLength,
|
|
);
|
|
}
|