import { TestBed } from '@angular/core/testing';
import { By } from '@angular/platform-browser';
import { Component, ElementRef, DebugElement } from '@angular/core';
import { TreeInternalComponent } from '../src/tree-internal.component';
import { TreeComponent } from '../src/tree.component';
import { TreeModel, Ng2TreeSettings } from '../src/tree.types';
import { TreeService } from '../src/tree.service';
import { NodeMenuService } from '../src/menu/node-menu.service';
import { NodeMenuComponent } from '../src/menu/node-menu.component';
import { NodeDraggableService } from '../src/draggable/node-draggable.service';
import { NodeDraggableDirective } from '../src/draggable/node-draggable.directive';
import { NodeEditableDirective } from '../src/editable/node-editable.directive';
import { NodeMenuAction } from '../src/menu/menu.events';
import * as EventUtils from '../src/utils/event.utils';
import { CapturedNode } from '../src/draggable/captured-node';

let fixture;
let masterInternalTreeEl;
let masterComponentInstance;
let lordInternalTreeEl;
let lordComponentInstance;
let faceInternalTreeEl;
let faceComponentInstance;
let nodeMenuService;
let nodeDraggableService;
let treeService;

const tree: TreeModel = {
  value: 'Master',
  children: [
    {value: 'Servant#1'},
    {value: 'Servant#2'}
  ]
};

const tree2: TreeModel = {
  value: 'Lord',
  children: [
    {
      value: 'Disciple#1',
      children: [
        {value: 'SubDisciple#1'},
        {value: 'SubDisciple#2'}
      ]
    },
    {value: 'Disciple#2'}
  ]
};

const tree3: TreeModel = {
  value: 'Face',
  settings: {
    'static': true
  },
  children: [
    {
      value: 'Eyes',
      children: [
        {
          value: 'Retina',
          settings: {
            'static': false
          }
        },
        {value: 'Eyebrow'}
      ]
    },
    {value: 'Lips'}
  ]
};

describe('TreeInternalComponent', () => {
  beforeEach(() => {
    TestBed.configureTestingModule({
      declarations: [TestComponent, TreeInternalComponent, TreeComponent, NodeEditableDirective, NodeMenuComponent, NodeDraggableDirective],
      providers: [NodeMenuService, NodeDraggableService, TreeService]
    });

    fixture = TestBed.createComponent(TestComponent);

    masterInternalTreeEl = fixture.debugElement.query(By.css('#master')).query(By.directive(TreeInternalComponent));
    masterComponentInstance = masterInternalTreeEl.componentInstance;

    lordInternalTreeEl = fixture.debugElement.query(By.css('#lord')).query(By.directive(TreeInternalComponent));
    lordComponentInstance = lordInternalTreeEl.componentInstance;

    faceInternalTreeEl = fixture.debugElement.query(By.css('#face')).query(By.directive(TreeInternalComponent));
    faceComponentInstance = faceInternalTreeEl.componentInstance;

    nodeMenuService = TestBed.get(NodeMenuService);
    nodeDraggableService = TestBed.get(NodeDraggableService);
    treeService = TestBed.get(TreeService);

    fixture.detectChanges();
  });

  it('should be created by angular', () => {
    expect(fixture).not.toBeNull();
    expect(nodeMenuService).not.toBeNull();
    expect(nodeDraggableService).not.toBeNull();
    expect(treeService).not.toBeNull();
  });

  it('should have properly set tree property', () => {
    expect(masterComponentInstance.tree).toBeDefined();
    expect(masterComponentInstance.tree.value).toEqual('Master');
  });

  it('should hide menu when appropriate event has occurred', () => {
    spyOn(nodeMenuService, 'hideMenuForAllNodesExcept');

    const event = jasmine.createSpyObj('e', ['preventDefault']);
    event.button = EventUtils.MouseButtons.Right;

    masterInternalTreeEl.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

    fixture.detectChanges();

    expect(masterComponentInstance.isMenuVisible).toEqual(true);
    expect(event.preventDefault).toHaveBeenCalled();
    expect(nodeMenuService.hideMenuForAllNodesExcept).toHaveBeenCalledTimes(1);
    expect(nodeMenuService.hideMenuForAllNodesExcept).toHaveBeenCalledWith(masterComponentInstance.element);
  });

  it('should unselect selected node when another node is selected', () => {
    const event = jasmine.createSpyObj('e', ['preventDefault']);
    event.button = EventUtils.MouseButtons.Left;

    const allNodeValues: DebugElement[] = masterInternalTreeEl.queryAll(By.css('.node-value'));

    expect(allNodeValues[0].nativeElement.innerText).toEqual('Master');

    allNodeValues[0].triggerEventHandler('click', event);

    fixture.detectChanges();

    expect(masterComponentInstance.isSelected).toEqual(true);
    expect(allNodeValues[0].nativeElement.classList.contains('node-selected')).toEqual(true);

    const servantNumber1El = allNodeValues[1].parent.parent.parent.parent;
    const servantNumber2El = allNodeValues[2].parent.parent.parent.parent;

    expect(servantNumber1El.componentInstance.isSelected).toEqual(false);
    expect(allNodeValues[1].nativeElement.classList.contains('node-selected')).toEqual(false);

    expect(servantNumber2El.componentInstance.isSelected).toEqual(false);
    expect(allNodeValues[2].nativeElement.classList.contains('node-selected')).toEqual(false);

    allNodeValues[1].triggerEventHandler('click', event);

    fixture.detectChanges();
    expect(masterComponentInstance.isSelected).toEqual(false);
    expect(allNodeValues[0].nativeElement.classList.contains('node-selected')).toEqual(false);

    expect(servantNumber1El.componentInstance.isSelected).toEqual(true);
    expect(allNodeValues[1].nativeElement.classList.contains('node-selected')).toEqual(true);

    expect(servantNumber2El.componentInstance.isSelected).toEqual(false);
    expect(allNodeValues[2].nativeElement.classList.contains('node-selected')).toEqual(false);
  });

  it('should drag node to the tree (though technically every node IS a tree)', () => {
    const internalTreeChildren = masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent));
    const servant1InternalTreeEl = internalTreeChildren[0];
    const servant2InternalTreeEl = internalTreeChildren[1];

    expect(servant1InternalTreeEl.componentInstance.tree.value).toEqual('Servant#1');
    expect(servant1InternalTreeEl.componentInstance.tree.positionInParent).toEqual(0);

    expect(servant2InternalTreeEl.componentInstance.tree.value).toEqual('Servant#2');
    expect(servant2InternalTreeEl.componentInstance.tree.positionInParent).toEqual(1);

    expect(masterInternalTreeEl.componentInstance.tree.children[0].value).toEqual('Servant#1');
    expect(masterInternalTreeEl.componentInstance.tree.children[1].value).toEqual('Servant#2');

    const capturedNode = new CapturedNode(servant1InternalTreeEl.componentInstance.element, servant1InternalTreeEl.componentInstance.tree);
    nodeDraggableService.fireNodeDragged(capturedNode, servant2InternalTreeEl.componentInstance.element);

    fixture.detectChanges();

    expect(servant1InternalTreeEl.componentInstance.tree.positionInParent).toEqual(1);
    expect(servant2InternalTreeEl.componentInstance.tree.positionInParent).toEqual(0);

    expect(masterInternalTreeEl.componentInstance.tree.children[1].value).toEqual('Servant#1');
    expect(masterInternalTreeEl.componentInstance.tree.children[0].value).toEqual('Servant#2');

    const masterElement = fixture.debugElement.nativeElement;
    const nodeValues = masterElement.querySelectorAll('.node-value');

    expect(nodeValues[0].innerText).toEqual('Master');
    expect(nodeValues[1].innerText).toEqual('Servant#2');
    expect(nodeValues[2].innerText).toEqual('Servant#1');
  });

  it('should not add node to the children of a sibling branch node', () => {
    const internalTreeChildren = lordInternalTreeEl.queryAll(By.directive(TreeInternalComponent));
    const disciple1InternalTreeEl = internalTreeChildren[0];
    const disciple2InternalTreeEl = internalTreeChildren[3];

    expect(disciple1InternalTreeEl.componentInstance.tree.value).toEqual('Disciple#1');
    expect(disciple2InternalTreeEl.componentInstance.tree.value).toEqual('Disciple#2');

    expect(lordInternalTreeEl.componentInstance.tree.children[0].value).toEqual('Disciple#1');
    expect(lordInternalTreeEl.componentInstance.tree.children[1].value).toEqual('Disciple#2');

    const capturedNode = new CapturedNode(disciple1InternalTreeEl.componentInstance.element, disciple1InternalTreeEl.componentInstance.tree);
    nodeDraggableService.fireNodeDragged(capturedNode, disciple2InternalTreeEl.componentInstance.element);

    fixture.detectChanges();

    expect(disciple1InternalTreeEl.componentInstance.tree.positionInParent).toEqual(1);
    expect(disciple2InternalTreeEl.componentInstance.tree.positionInParent).toEqual(0);

    expect(lordInternalTreeEl.componentInstance.tree.children[1].value).toEqual('Disciple#1');
    expect(lordInternalTreeEl.componentInstance.tree.children[0].value).toEqual('Disciple#2');

    expect(lordInternalTreeEl.componentInstance.tree.children.length).toEqual(2);
    expect(disciple2InternalTreeEl.componentInstance.tree.children).toBeNull();

    const lordElement = lordInternalTreeEl.nativeElement;
    const nodeValues = lordElement.querySelectorAll('.node-value');

    expect(nodeValues[0].innerText).toEqual('Lord');
    expect(nodeValues[1].innerText).toEqual('Disciple#2');
    expect(nodeValues[2].innerText).toEqual('Disciple#1');
    expect(nodeValues[3].innerText).toEqual('SubDisciple#1');
    expect(nodeValues[4].innerText).toEqual('SubDisciple#2');
  });

  it('should be impossible to drag parent onto its child', () => {
    const internalTreeChildren = masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent));
    const servant2InternalTreeEl = internalTreeChildren[1];

    const capturedNode = new CapturedNode(masterComponentInstance.element, masterComponentInstance.tree);
    nodeDraggableService.fireNodeDragged(capturedNode, servant2InternalTreeEl.componentInstance.element);

    fixture.detectChanges();

    expect(masterInternalTreeEl.componentInstance.tree.children[0].value).toEqual('Servant#1');
    expect(masterInternalTreeEl.componentInstance.tree.children[1].value).toEqual('Servant#2');

    const masterElement = fixture.debugElement.nativeElement;
    const nodeValues = masterElement.querySelectorAll('.node-value');

    expect(nodeValues[0].innerText).toEqual('Master');
    expect(nodeValues[1].innerText).toEqual('Servant#1');
    expect(nodeValues[2].innerText).toEqual('Servant#2');
  });

  it('should be possible to drag node from one subtree to another subtree in the same parent tree', () => {
    const internalTreeChildren = lordInternalTreeEl.queryAll(By.directive(TreeInternalComponent));
    const disciple1InternalTreeEl = internalTreeChildren[0];
    const subDisciple1InternalTreeEl = internalTreeChildren[1];
    const subDisciple2InternalTreeEl = internalTreeChildren[2];
    const disciple2InternalTreeEl = internalTreeChildren[3];

    expect(disciple1InternalTreeEl.componentInstance.tree.value).toEqual('Disciple#1');
    expect(subDisciple1InternalTreeEl.componentInstance.tree.value).toEqual('SubDisciple#1');
    expect(subDisciple2InternalTreeEl.componentInstance.tree.value).toEqual('SubDisciple#2');
    expect(disciple2InternalTreeEl.componentInstance.tree.value).toEqual('Disciple#2');

    const capturedNode = new CapturedNode(subDisciple1InternalTreeEl.componentInstance.element, subDisciple1InternalTreeEl.componentInstance.tree);
    nodeDraggableService.fireNodeDragged(capturedNode, disciple2InternalTreeEl.componentInstance.element);

    fixture.detectChanges();

    expect(lordInternalTreeEl.componentInstance.tree.children.length).toEqual(3);
    expect(lordInternalTreeEl.componentInstance.tree.children[0].value).toEqual('Disciple#1');
    expect(lordInternalTreeEl.componentInstance.tree.children[1].value).toEqual('SubDisciple#1');
    expect(lordInternalTreeEl.componentInstance.tree.children[2].value).toEqual('Disciple#2');

    expect(disciple1InternalTreeEl.componentInstance.tree.children.length).toEqual(1);
    expect(disciple1InternalTreeEl.componentInstance.tree.children[0].value).toEqual('SubDisciple#2');

    const lordElement = lordInternalTreeEl.nativeElement;
    const nodeValues = lordElement.querySelectorAll('.node-value');

    expect(nodeValues[0].innerText).toEqual('Lord');
    expect(nodeValues[1].innerText).toEqual('Disciple#1');
    expect(nodeValues[2].innerText).toEqual('SubDisciple#2');
    expect(nodeValues[3].innerText).toEqual('SubDisciple#1');
    expect(nodeValues[4].innerText).toEqual('Disciple#2');
  });

  it('should be possible to drag node from one subtree to another subtree in different parent trees', () => {
    const lordInternalTreeChildren = lordInternalTreeEl.queryAll(By.directive(TreeInternalComponent));
    const disciple1InternalTreeEl = lordInternalTreeChildren[0];
    const subDisciple1InternalTreeEl = lordInternalTreeChildren[1];

    const masterInternalTreeChildren = masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent));
    const servant1InternalTreeEl = masterInternalTreeChildren[0];

    const capturedNode = new CapturedNode(servant1InternalTreeEl.componentInstance.element, servant1InternalTreeEl.componentInstance.tree);
    nodeDraggableService.fireNodeDragged(capturedNode, subDisciple1InternalTreeEl.componentInstance.element);

    fixture.detectChanges();

    expect(disciple1InternalTreeEl.componentInstance.tree.children.length).toEqual(3);
    expect(disciple1InternalTreeEl.componentInstance.tree.children[0].value).toEqual('Servant#1');
    expect(disciple1InternalTreeEl.componentInstance.tree.children[1].value).toEqual('SubDisciple#1');
    expect(disciple1InternalTreeEl.componentInstance.tree.children[2].value).toEqual('SubDisciple#2');

    expect(masterInternalTreeEl.componentInstance.tree.children.length).toEqual(1);
    expect(masterInternalTreeEl.componentInstance.tree.children[0].value).toEqual('Servant#2');

    const lordElement = lordInternalTreeEl.nativeElement;
    const lordNodeValues = lordElement.querySelectorAll('.node-value');

    expect(lordNodeValues[0].innerText).toEqual('Lord');
    expect(lordNodeValues[1].innerText).toEqual('Disciple#1');
    expect(lordNodeValues[2].innerText).toEqual('Servant#1');
    expect(lordNodeValues[3].innerText).toEqual('SubDisciple#1');
    expect(lordNodeValues[4].innerText).toEqual('SubDisciple#2');
    expect(lordNodeValues[5].innerText).toEqual('Disciple#2');

    const masterElement = masterInternalTreeEl.nativeElement;
    const masterNodeValues = masterElement.querySelectorAll('.node-value');

    expect(masterNodeValues[0].innerText).toEqual('Master');
    expect(masterNodeValues[1].innerText).toEqual('Servant#2');
  });

  it('add node to its children', () => {
    const lordInternalTreeChildren = lordInternalTreeEl.queryAll(By.directive(TreeInternalComponent));
    const disciple1InternalTreeEl = lordInternalTreeChildren[0];

    const masterInternalTreeChildren = masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent));
    const servant1InternalTreeEl = masterInternalTreeChildren[0];

    const capturedNode = new CapturedNode(servant1InternalTreeEl.componentInstance.element, servant1InternalTreeEl.componentInstance.tree);
    nodeDraggableService.fireNodeDragged(capturedNode, disciple1InternalTreeEl.componentInstance.element);

    fixture.detectChanges();

    expect(disciple1InternalTreeEl.componentInstance.tree.children.length).toEqual(3);
    expect(disciple1InternalTreeEl.componentInstance.tree.children[0].value).toEqual('SubDisciple#1');
    expect(disciple1InternalTreeEl.componentInstance.tree.children[1].value).toEqual('SubDisciple#2');
    expect(disciple1InternalTreeEl.componentInstance.tree.children[2].value).toEqual('Servant#1');

    expect(masterInternalTreeEl.componentInstance.tree.children.length).toEqual(1);
    expect(masterInternalTreeEl.componentInstance.tree.children[0].value).toEqual('Servant#2');

    const lordElement = lordInternalTreeEl.nativeElement;
    const lordNodeValues = lordElement.querySelectorAll('.node-value');

    expect(lordNodeValues[0].innerText).toEqual('Lord');
    expect(lordNodeValues[1].innerText).toEqual('Disciple#1');
    expect(lordNodeValues[2].innerText).toEqual('SubDisciple#1');
    expect(lordNodeValues[3].innerText).toEqual('SubDisciple#2');
    expect(lordNodeValues[4].innerText).toEqual('Servant#1');
    expect(lordNodeValues[5].innerText).toEqual('Disciple#2');

    const masterElement = masterInternalTreeEl.nativeElement;
    const masterNodeValues = masterElement.querySelectorAll('.node-value');

    expect(masterNodeValues[0].innerText).toEqual('Master');
    expect(masterNodeValues[1].innerText).toEqual('Servant#2');
  });

  it('should be possible to collapse node', () => {
    const foldingControl = masterInternalTreeEl.query(By.css('.folding'));

    expect(masterInternalTreeEl.componentInstance.tree.isNodeExpanded()).toEqual(true);

    foldingControl.triggerEventHandler('click');

    fixture.detectChanges();

    expect(masterInternalTreeEl.componentInstance.tree.isNodeExpanded()).toEqual(false);
    const children = masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent));

    expect(children.length).toEqual(0);
  });

  it('should be possible to expand node', () => {
    const foldingControl = masterInternalTreeEl.query(By.css('.folding'));

    expect(masterInternalTreeEl.componentInstance.tree.isNodeExpanded()).toEqual(true);

    foldingControl.triggerEventHandler('click');

    fixture.detectChanges();

    expect(masterInternalTreeEl.componentInstance.tree.isNodeExpanded()).toEqual(false);
    let children = masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent));

    expect(children.length).toEqual(0);

    foldingControl.triggerEventHandler('click');

    fixture.detectChanges();

    expect(masterInternalTreeEl.componentInstance.tree.isNodeExpanded()).toEqual(true);
    children = masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent));

    expect(children.length).toEqual(2);
  });

  it('should show menu on node', () => {
    const event = jasmine.createSpyObj('e', ['preventDefault']);
    event.button = EventUtils.MouseButtons.Right;

    masterInternalTreeEl.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

    fixture.detectChanges();

    expect(masterComponentInstance.isMenuVisible).toEqual(true);
    const menus = masterInternalTreeEl.queryAll(By.css('.node-menu'));

    expect(menus.length).toEqual(1);
    expect(menus[0].queryAll(By.css('.node-menu-item')).length).toEqual(4);
  });

  it('should remove node by click on appropriate menu item', () => {
    const event = jasmine.createSpyObj('e', ['preventDefault']);
    event.button = EventUtils.MouseButtons.Right;

    const servantEls = masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent));
    const servant1El = servantEls[0];

    servant1El.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

    fixture.detectChanges();

    expect(servant1El.componentInstance.isMenuVisible).toEqual(true);
    const menu = servant1El.query(By.css('.node-menu'));

    const menuItemRemove: DebugElement = menu.query(By.css('.remove')).parent;

    const eventRemove = {button: EventUtils.MouseButtons.Left};
    menuItemRemove.triggerEventHandler('click', eventRemove);

    fixture.detectChanges();

    const remainedSevantEls = masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent));
    expect(remainedSevantEls.length).toEqual(1);
    expect(remainedSevantEls[0].componentInstance.tree.value).toEqual('Servant#2');
  });

  it('should hide menu on click outside of menu', () => {
    const event = jasmine.createSpyObj('e', ['preventDefault']);
    event.button = EventUtils.MouseButtons.Right;

    const servantEls = masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent));
    const servant1El = servantEls[0];

    servant1El.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

    fixture.detectChanges();

    expect(servant1El.componentInstance.isMenuVisible).toEqual(true);
    expect(servant1El.query(By.css('.node-menu'))).toBeDefined();

    nodeMenuService.fireMenuEvent(null, NodeMenuAction.Close);

    fixture.detectChanges();

    expect(servant1El.componentInstance.isMenuVisible).toEqual(false);
    expect(servant1El.query(By.css('.node-menu'))).toBeNull();
  });

  it('should rename node on enter', () => {
    const event = jasmine.createSpyObj('e', ['preventDefault']);
    event.button = EventUtils.MouseButtons.Right;

    masterInternalTreeEl.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

    fixture.detectChanges();

    expect(masterInternalTreeEl.componentInstance.isMenuVisible).toEqual(true);
    const menu = masterInternalTreeEl.query(By.css('.node-menu'));

    const menuItemRename: DebugElement = menu.query(By.css('.rename')).parent;

    const eventRename = {button: EventUtils.MouseButtons.Left};
    menuItemRename.triggerEventHandler('click', eventRename);

    fixture.detectChanges();

    const inputRename = masterInternalTreeEl.query(By.css('input.node-value'));
    expect(inputRename).toBeDefined();
    inputRename.triggerEventHandler('keyup.enter', {target: {value: 'bla'}});

    fixture.detectChanges();

    expect(masterComponentInstance.tree.value).toEqual('bla');
  });

  it('should rename node on blur', () => {
    const event = jasmine.createSpyObj('e', ['preventDefault']);
    event.button = EventUtils.MouseButtons.Right;

    masterInternalTreeEl.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

    fixture.detectChanges();

    expect(masterInternalTreeEl.componentInstance.isMenuVisible).toEqual(true);
    const menu = masterInternalTreeEl.query(By.css('.node-menu'));

    const menuItemRename: DebugElement = menu.query(By.css('.rename')).parent;

    const eventRename = {button: EventUtils.MouseButtons.Left};
    menuItemRename.triggerEventHandler('click', eventRename);

    fixture.detectChanges();

    const inputRename = masterInternalTreeEl.query(By.css('input.node-value'));
    expect(inputRename).toBeDefined();
    inputRename.triggerEventHandler('blur', {target: {value: 'bla'}});

    fixture.detectChanges();

    expect(masterComponentInstance.tree.value).toEqual('bla');
  });

  it('should cancel renaming node on escape pressed', () => {
    const event = jasmine.createSpyObj('e', ['preventDefault']);
    event.button = EventUtils.MouseButtons.Right;

    masterInternalTreeEl.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

    fixture.detectChanges();

    expect(masterInternalTreeEl.componentInstance.isMenuVisible).toEqual(true);
    const menu = masterInternalTreeEl.query(By.css('.node-menu'));

    const menuItemRename: DebugElement = menu.query(By.css('.rename')).parent;

    const eventRename = {button: EventUtils.MouseButtons.Left};
    menuItemRename.triggerEventHandler('click', eventRename);

    fixture.detectChanges();

    const inputRename = masterInternalTreeEl.query(By.css('input.node-value'));
    expect(inputRename).toBeDefined();
    inputRename.nativeElement.value = '121212';
    inputRename.triggerEventHandler('keyup.esc', {target: {value: 'bla'}});

    fixture.detectChanges();

    expect(masterComponentInstance.tree.value).toEqual('Master');
  });

  it('should not rename node on empty input', () => {
    const event = jasmine.createSpyObj('e', ['preventDefault']);
    event.button = EventUtils.MouseButtons.Right;

    masterInternalTreeEl.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

    fixture.detectChanges();

    expect(masterInternalTreeEl.componentInstance.isMenuVisible).toEqual(true);
    const menu = masterInternalTreeEl.query(By.css('.node-menu'));

    const menuItemRename: DebugElement = menu.query(By.css('.rename')).parent;

    const eventRename = {button: EventUtils.MouseButtons.Left};
    menuItemRename.triggerEventHandler('click', eventRename);

    fixture.detectChanges();

    const inputRename = masterInternalTreeEl.query(By.css('input.node-value'));
    expect(inputRename).toBeDefined();
    inputRename.triggerEventHandler('blur', {target: {value: ''}});

    fixture.detectChanges();

    expect(masterComponentInstance.tree.value).toEqual('Master');
  });

  it('should create a leaf child when NewTag operation activated on a branch node', () => {
    const event = jasmine.createSpyObj('e', ['preventDefault']);
    event.button = EventUtils.MouseButtons.Right;

    masterInternalTreeEl.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

    fixture.detectChanges();

    expect(masterInternalTreeEl.componentInstance.isMenuVisible).toEqual(true);
    const menu = masterInternalTreeEl.query(By.css('.node-menu'));

    const menuNewTag: DebugElement = menu.query(By.css('.new-tag')).parent;

    const eventRename = {button: EventUtils.MouseButtons.Left};
    menuNewTag.triggerEventHandler('click', eventRename);

    fixture.detectChanges();

    const inputRename = masterInternalTreeEl.query(By.css('input.node-value'));
    expect(inputRename).toBeDefined();
    inputRename.triggerEventHandler('keyup.enter', {target: {value: 'bla'}});

    fixture.detectChanges();

    expect(masterComponentInstance.tree.children.length).toEqual(3);
    expect(masterComponentInstance.tree.children[2].value).toEqual('bla');
    expect(masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent))[2].nativeElement.querySelector('.node-value').innerText).toEqual('bla');
  });

  it('should create a sibling leaf when NewTag operation was activated on a node that is leaf', () => {
    const event = jasmine.createSpyObj('e', ['preventDefault']);
    event.button = EventUtils.MouseButtons.Right;

    const servant1El = masterInternalTreeEl.query(By.directive(TreeInternalComponent));

    servant1El.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

    fixture.detectChanges();

    expect(servant1El.componentInstance.isMenuVisible).toEqual(true);
    const menu = servant1El.query(By.css('.node-menu'));

    const menuNewTag: DebugElement = menu.query(By.css('.new-tag')).parent;

    const eventRename = {button: EventUtils.MouseButtons.Left};
    menuNewTag.triggerEventHandler('click', eventRename);

    fixture.detectChanges();

    const inputRename = masterInternalTreeEl.query(By.css('input.node-value'));
    expect(inputRename).toBeTruthy();
    inputRename.triggerEventHandler('keyup.enter', {target: {value: 'bla'}});

    fixture.detectChanges();

    expect(masterComponentInstance.tree.children.length).toEqual(3);
    expect(masterComponentInstance.tree.children[2].value).toEqual('bla');
    expect(masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent))[2].nativeElement.querySelector('.node-value').innerText).toEqual('bla');
  });

  it('should not create a node with empty value', () => {
    const event = jasmine.createSpyObj('e', ['preventDefault']);
    event.button = EventUtils.MouseButtons.Right;

    masterInternalTreeEl.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

    fixture.detectChanges();

    expect(masterInternalTreeEl.componentInstance.isMenuVisible).toEqual(true);
    const menu = masterInternalTreeEl.query(By.css('.node-menu'));

    const menuNewTag: DebugElement = menu.query(By.css('.new-tag')).parent;

    const eventRename = {button: EventUtils.MouseButtons.Left};
    menuNewTag.triggerEventHandler('click', eventRename);

    fixture.detectChanges();

    const inputRename = masterInternalTreeEl.query(By.css('input.node-value'));
    expect(inputRename).toBeDefined();
    inputRename.triggerEventHandler('keyup.enter', {target: {value: '\r\n\t '}});

    fixture.detectChanges();

    expect(masterComponentInstance.tree.children.length).toEqual(2);
    expect(masterComponentInstance.tree.children[0].value).toEqual('Servant#1');
    expect(masterComponentInstance.tree.children[1].value).toEqual('Servant#2');

    const servantEls = masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent));
    expect(servantEls.length).toEqual(2);
    expect(servantEls[0].nativeElement.querySelector('.node-value').innerText).toEqual('Servant#1');
    expect(servantEls[1].nativeElement.querySelector('.node-value').innerText).toEqual('Servant#2');
  });

  it('should create a branch node when NewFolder operation activated', () => {
    const event = jasmine.createSpyObj('e', ['preventDefault']);
    event.button = EventUtils.MouseButtons.Right;

    masterInternalTreeEl.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

    fixture.detectChanges();

    expect(masterInternalTreeEl.componentInstance.isMenuVisible).toEqual(true);
    const menu = masterInternalTreeEl.query(By.css('.node-menu'));

    const menuNewTag: DebugElement = menu.query(By.css('.new-folder')).parent;

    const eventRename = {button: EventUtils.MouseButtons.Left};
    menuNewTag.triggerEventHandler('click', eventRename);

    fixture.detectChanges();

    const inputRename = masterInternalTreeEl.query(By.css('input.node-value'));
    expect(inputRename).toBeDefined();
    inputRename.triggerEventHandler('keyup.enter', {target: {value: 'Branch'}});

    fixture.detectChanges();

    expect(masterComponentInstance.tree.children.length).toEqual(3);
    expect(masterComponentInstance.tree.children[2].value).toEqual('Branch');
    expect(masterComponentInstance.tree.children[2].isBranch()).toEqual(true);
    expect(masterComponentInstance.tree.children[2].children).toBeDefined();
    expect(masterComponentInstance.tree.children[2].children.length).toEqual(0);
    expect(masterInternalTreeEl.queryAll(By.directive(TreeInternalComponent))[2].nativeElement.querySelector('.node-value').innerText).toEqual('Branch');
  });

  it('shouldn\'t show root of the tree', () => {
    expect(faceComponentInstance.tree.isRoot()).toEqual(true, 'Element that has rootless class should be a root of the tree');

    const treeUl = faceInternalTreeEl.query(By.css('.tree'));
    expect(treeUl.classes['rootless']).toEqual(true, 'Tree with hidden root should have "rootless" css class');

    const valueContainer = faceInternalTreeEl.query(By.css('.value-container'));
    expect(valueContainer.classes['rootless']).toEqual(true, 'Element which contains tree value should also have "rootless" css class');
  });

  it('should not propagate root visibility to its children - in other words only root should be modified in the tree and hidden', () => {
    const childEl = faceInternalTreeEl.query(By.directive(TreeInternalComponent));
    expect(childEl.componentInstance.tree.isRoot()).toEqual(false);
    expect(childEl.query(By.css('.tree')).classes['rootless']).toEqual(false, 'Only element with root tree node can have rootless class');
    expect(childEl.query(By.css('.value-container')).classes['rootless']).toEqual(false, 'Only element with root tree node can have rootless class');
  });

  describe('Static Tree', () => {
    it('should not show menu', () => {
      const event = jasmine.createSpyObj('e', ['preventDefault']);
      event.button = EventUtils.MouseButtons.Right;

      faceInternalTreeEl.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

      fixture.detectChanges();

      expect(faceComponentInstance.isMenuVisible).toEqual(false);
      expect(faceInternalTreeEl.query(By.css('.node-menu'))).toEqual(null);

      const childEl = faceInternalTreeEl.query(By.directive(TreeInternalComponent));
      expect(childEl.componentInstance.isMenuVisible).toEqual(false);
      expect(childEl.query(By.css('.node-menu'))).toEqual(null);
    });

    it('should allow to override static option for it\'s children', () => {
      const event = jasmine.createSpyObj('e', ['preventDefault']);
      event.button = EventUtils.MouseButtons.Right;

      const childEl = faceInternalTreeEl.queryAll(By.directive(TreeInternalComponent))[1];

      childEl.query(By.css('.value-container')).triggerEventHandler('contextmenu', event);

      fixture.detectChanges();

      expect(childEl.componentInstance.tree.value).toEqual('Retina');
      expect(childEl.componentInstance.isMenuVisible).toEqual(true);
      expect(childEl.query(By.css('.node-menu'))).toBeTruthy();
    });

    it('should not be draggable', () => {
      const internalTreeChildren = faceInternalTreeEl.queryAll(By.directive(TreeInternalComponent));
      const eyesEl = internalTreeChildren[0];
      const lipsEl = internalTreeChildren[3];

      expect(eyesEl.componentInstance.tree.value).toEqual('Eyes');
      expect(eyesEl.componentInstance.tree.positionInParent).toEqual(0);

      expect(lipsEl.componentInstance.tree.value).toEqual('Lips');
      expect(lipsEl.componentInstance.tree.positionInParent).toEqual(1);

      const capturedNode = new CapturedNode(eyesEl.componentInstance.element, eyesEl.componentInstance.tree);
      nodeDraggableService.fireNodeDragged(capturedNode, lipsEl.componentInstance.element);

      fixture.detectChanges();

      expect(eyesEl.componentInstance.tree.positionInParent).toEqual(0);
      expect(lipsEl.componentInstance.tree.positionInParent).toEqual(1);

      expect(faceInternalTreeEl.componentInstance.tree.children[0].value).toEqual('Eyes');
      expect(faceInternalTreeEl.componentInstance.tree.children[1].value).toEqual('Lips');

      const nativeElement = faceInternalTreeEl.nativeElement;
      const nodeValues = nativeElement.querySelectorAll('.node-value');

      expect(nodeValues[0].innerText).toEqual('Face');
      expect(nodeValues[1].innerText).toEqual('Eyes');
      expect(nodeValues[2].innerText).toEqual('Retina');
      expect(nodeValues[3].innerText).toEqual('Eyebrow');
      expect(nodeValues[4].innerText).toEqual('Lips');
    });
  })
});

@Component({
  template: `
  <div><tree id="master" [tree]="tree"></tree></div>
  <div><tree id="lord" [tree]="tree2"></tree></div>
  <div><tree id="face" [tree]="tree3" [settings]="settings"></tree></div>
`
})
class TestComponent {
  public tree: TreeModel = tree;
  public tree2: TreeModel = tree2;
  public tree3: TreeModel = tree3;

  public settings: Ng2TreeSettings = {
    rootIsVisible: false
  };

  public constructor(public treeHolder: ElementRef) {
  }
}