public/dart/fuchsia_inspect_flutter/test/inspect_flutter_test.dart

/// Copyright 2019 The Fuchsia Authors. All rights reserved.
/// Use of this source code is governed by a BSD-style license that can be
/// found in the LICENSE file.

// ignore_for_file: implementation_imports

import 'package:test/test.dart';
import 'package:fuchsia_inspect_flutter/src/inspect_flutter.dart';
import 'package:flutter/foundation.dart';
import 'package:fuchsia_inspect/inspect.dart';
import 'package:test_vmo_reader/vmo_reader.dart' show VmoReader;
import 'package:fuchsia_inspect/src/vmo/vmo_holder.dart';
import 'package:fuchsia_inspect/src/inspect/internal/_inspect_impl.dart';
import 'package:fuchsia_inspect/src/vmo/vmo_writer.dart';
import 'package:fuchsia_services/services.dart';
import 'package:test_vmo_reader/util.dart';

// This class was made to test the InspectFlutter class
// The FakeDiagnosticsNode allows properties and children
// to be added to the node.
class FakeDiagnosticsNode extends DiagnosticsNode {
  List<FakeDiagnosticsNode> properties = <FakeDiagnosticsNode>[];
  List<FakeDiagnosticsNode> children = <FakeDiagnosticsNode>[];
  @override
  String value;

  FakeDiagnosticsNode(String newName)
      : super(name: newName, style: DiagnosticsTreeStyle.dense);

  @override
  List<FakeDiagnosticsNode> getChildren() {
    return children;
  }

  @override
  List<FakeDiagnosticsNode> getProperties() {
    return properties;
  }

  void addProperty(String propertyName, String propertyValue) {
    var fakeNode =
        (FakeDiagnosticsNode(propertyName)..value = propertyValue);
    properties.add(fakeNode);
  }

  void addChild(String childName, String childValue) {
    var fakeNode =
        (FakeDiagnosticsNode(childName)..value = childValue);
    children.add(fakeNode);
  }

  @override
  String toDescription({TextTreeConfiguration parentConfiguration}) {
    return '$value';
  }
}

void main() {
  VmoHolder vmo;
  Node root;
  const defaultVmoSize = 256 * 1024;

  setUp(() {
    var context = StartupContext.fromStartupInfo();
    vmo = FakeVmo(defaultVmoSize);
    var writer = VmoWriter.withVmo(vmo);
    Inspect inspect =
        InspectImpl(context.outgoing.debugDir(), 'root.inspect', writer);
    root = inspect.root;
  });

  test('Widget Tree Output is correct', () {
    FakeDiagnosticsNode fakeNode = (FakeDiagnosticsNode('IGNORED')
      ..addProperty('widget', 'node1')
      ..addProperty('prop1', 'value1')
      ..addProperty('prop2', 'value2')
      ..addProperty('prop3', 'value3')
      ..addChild('widget', 'node2')
      ..children[0].addProperty('widget', 'node2'));
    InspectFlutter.inspectFromDiagnostic(fakeNode, root);
    expect(VmoReader(vmo).toString(), matches(RegExp(
      r'<> Node: "root"\n'
      r'<> >> Node: "node1_\d+"\n'
      r'<> >> >> StringProperty "prop3": "value3"\n'
      r'<> >> >> StringProperty "prop2": "value2"\n'
      r'<> >> >> StringProperty "prop1": "value1"\n'
      r'<> >> >> StringProperty "widget": "node1"\n'
      r'<> >> >> Node: "node2_\d+"\n'
      r'<> >> >> >> StringProperty "widget": "node2"\n'
    )));
  });

  test('Widget Tree Output does not display null properties', () {
    FakeDiagnosticsNode fakeNode = (FakeDiagnosticsNode('IGNORED')
      ..addProperty('widget', 'node1')
      ..addProperty('prop1', 'value1')
      ..addProperty('prop2', 'value2')
      ..addProperty('prop3', 'value3')
      ..addProperty(null, null));
    InspectFlutter.inspectFromDiagnostic(fakeNode, root);
    expect(VmoReader(vmo).toString(), matches(RegExp(
      r'<> Node: "root"\n'
      r'<> >> Node: "node1_\d+"\n'
      r'<> >> >> StringProperty "prop3": "value3"\n'
      r'<> >> >> StringProperty "prop2": "value2"\n'
      r'<> >> >> StringProperty "prop1": "value1"\n'
      r'<> >> >> StringProperty "widget": "node1"\n'
      ''
    )));
  });

  test('Widget Tree Output does not display a node with no widget property', () {
    FakeDiagnosticsNode fakeNode = (FakeDiagnosticsNode('IGNORED')
      ..addProperty('prop1', 'value1')
      ..addProperty('prop2', 'value2')
      ..addProperty('prop3', 'value3'));
    InspectFlutter.inspectFromDiagnostic(fakeNode, root);
    expect(VmoReader(vmo).toString(),(
      '<> Node: "root"\n'
      ''
    ));
  });

}