svgedit/cypress/integration/unit/draw.js

import 'pathseg'
import { NS } from '../../../instrumented/svgcanvas/namespaces.js'
import * as draw from '../../../instrumented/svgcanvas/draw.js'
import * as units from '../../../instrumented/common/units.js'

describe('draw.Drawing', function () {
  const addOwnSpies = (obj) => {
    const methods = Object.keys(obj)
    methods.forEach((method) => {
      cy.spy(obj, method)
    })
  }

  const LAYER_CLASS = draw.Layer.CLASS_NAME
  const NONCE = 'foo'
  const LAYER1 = 'Layer 1'
  const LAYER2 = 'Layer 2'
  const LAYER3 = 'Layer 3'
  const PATH_ATTR = {
    // clone will convert relative to absolute, so the test for equality fails.
    // d:    'm7.38867,57.38867c0,-27.62431 22.37569,-50 50,-50c27.62431,0 50,22.37569 50,50c0,27.62431 -22.37569,50 -50,50c-27.62431,0 -50,-22.37569 -50,-50z',
    d: 'M7.389,57.389C7.389,29.764 29.764,7.389 57.389,7.389C85.013,7.389 107.389,29.764 107.389,57.389C107.389,85.013 85.013,107.389 57.389,107.389C29.764,107.389 7.389,85.013 7.389,57.389z',
    transform: 'rotate(45 57.388671875000036,57.388671874999986) ',
    'stroke-width': '5',
    stroke: '#660000',
    fill: '#ff0000'
  }

  units.init(
    /**
    * @implements {module:units.ElementContainer}
    */
    {
      // used by units.shortFloat - call path: cloneLayer -> copyElem -> convertPath -> pathDSegment -> shortFloat
      getRoundDigits () { return 3 }
    }
  )

  // Simplifying from svgcanvas.js usage
  const idprefix = 'svg_'

  const getCurrentDrawing = function () {
    return currentDrawing_
  }
  const setCurrentGroup = () => { /* empty fn */ }
  draw.init(
    /**
    * @implements {module:draw.DrawCanvasInit}
    */
    {
      getCurrentDrawing,
      setCurrentGroup
    }
  )

  /**
   * @param {module:utilities.SVGElementJSON} jsonMap
   * @returns {SVGElement}
   */
  function createSVGElement (jsonMap) {
    const elem = document.createElementNS(NS.SVG, jsonMap.element)
    Object.entries(jsonMap.attr).forEach(([attr, value]) => {
      elem.setAttribute(attr, value)
    })
    return elem
  }

  const setupSVGWith3Layers = function (svgElem) {
    const layer1 = document.createElementNS(NS.SVG, 'g')
    const layer1Title = document.createElementNS(NS.SVG, 'title')
    layer1Title.append(LAYER1)
    layer1.append(layer1Title)
    svgElem.append(layer1)

    const layer2 = document.createElementNS(NS.SVG, 'g')
    const layer2Title = document.createElementNS(NS.SVG, 'title')
    layer2Title.append(LAYER2)
    layer2.append(layer2Title)
    svgElem.append(layer2)

    const layer3 = document.createElementNS(NS.SVG, 'g')
    const layer3Title = document.createElementNS(NS.SVG, 'title')
    layer3Title.append(LAYER3)
    layer3.append(layer3Title)
    svgElem.append(layer3)

    return [layer1, layer2, layer3]
  }

  const createSomeElementsInGroup = function (group) {
    group.append(
      createSVGElement({
        element: 'path',
        attr: PATH_ATTR
      }),
      // createSVGElement({
      //    element: 'path',
      //    attr: {d: 'M0,1L2,3'}
      // }),
      createSVGElement({
        element: 'rect',
        attr: { x: '0', y: '1', width: '5', height: '10' }
      }),
      createSVGElement({
        element: 'line',
        attr: { x1: '0', y1: '1', x2: '5', y2: '6' }
      })
    )

    const g = createSVGElement({
      element: 'g',
      attr: {}
    })
    g.append(createSVGElement({
      element: 'rect',
      attr: { x: '0', y: '1', width: '5', height: '10' }
    }))
    group.append(g)
    return 4
  }

  const cleanupSVG = function (svgElem) {
    while (svgElem.firstChild) { svgElem.firstChild.remove() }
  }

  let sandbox; let currentDrawing_; let svg; let svgN
  beforeEach(() => {
    sandbox = document.createElement('div')
    sandbox.id = 'sandbox'
    sandbox.style.visibility = 'hidden'

    svg = document.createElementNS(NS.SVG, 'svg')
    // Firefox throws exception in getBBox() when svg is not attached to DOM.
    sandbox.append(svg)

    // Set up <svg> with nonce.
    svgN = document.createElementNS(NS.SVG, 'svg')
    svgN.setAttributeNS(NS.XMLNS, 'xmlns:se', NS.SE)
    svgN.setAttributeNS(NS.SE, 'se:nonce', NONCE)

    const svgContent = document.createElementNS(NS.SVG, 'svg')
    currentDrawing_ = new draw.Drawing(svgContent, idprefix)
  })

  it('Test draw module', function () {
    assert.ok(draw)
    assert.equal(typeof draw, typeof {})

    assert.ok(draw.Drawing)
    assert.equal(typeof draw.Drawing, typeof function () { /* empty fn */ })
  })

  it('Test document creation', function () {
    let doc
    try {
      doc = new draw.Drawing()
      assert.ok(false, 'Created drawing without a valid <svg> element')
    } catch (e) {
      assert.ok(true)
    }

    try {
      doc = new draw.Drawing(svg)
      assert.ok(doc)
      assert.equal(typeof doc, typeof {})
    } catch (e) {
      assert.ok(false, 'Could not create document from valid <svg> element: ' + e)
    }
  })

  it('Test nonce', function () {
    let doc = new draw.Drawing(svg)
    assert.equal(doc.getNonce(), '')

    doc = new draw.Drawing(svgN)
    assert.equal(doc.getNonce(), NONCE)
    assert.equal(doc.getSvgElem().getAttributeNS(NS.SE, 'nonce'), NONCE)

    doc.clearNonce()
    assert.ok(!doc.getNonce())
    assert.ok(!doc.getSvgElem().getAttributeNS(NS.SE, 'se:nonce'))

    doc.setNonce(NONCE)
    assert.equal(doc.getNonce(), NONCE)
    assert.equal(doc.getSvgElem().getAttributeNS(NS.SE, 'nonce'), NONCE)
  })

  it('Test getId() and getNextId() without nonce', function () {
    const elem2 = document.createElementNS(NS.SVG, 'circle')
    elem2.id = 'svg_2'
    svg.append(elem2)

    const doc = new draw.Drawing(svg)

    assert.equal(doc.getId(), 'svg_0')

    assert.equal(doc.getNextId(), 'svg_1')
    assert.equal(doc.getId(), 'svg_1')

    assert.equal(doc.getNextId(), 'svg_3')
    assert.equal(doc.getId(), 'svg_3')

    assert.equal(doc.getNextId(), 'svg_4')
    assert.equal(doc.getId(), 'svg_4')
    // clean out svg document
    cleanupSVG(svg)
  })

  it('Test getId() and getNextId() with prefix without nonce', function () {
    const prefix = 'Bar-'
    const doc = new draw.Drawing(svg, prefix)

    assert.equal(doc.getId(), prefix + '0')

    assert.equal(doc.getNextId(), prefix + '1')
    assert.equal(doc.getId(), prefix + '1')

    assert.equal(doc.getNextId(), prefix + '2')
    assert.equal(doc.getId(), prefix + '2')

    assert.equal(doc.getNextId(), prefix + '3')
    assert.equal(doc.getId(), prefix + '3')

    cleanupSVG(svg)
  })

  it('Test getId() and getNextId() with nonce', function () {
    const prefix = 'svg_' + NONCE

    const elem2 = document.createElementNS(NS.SVG, 'circle')
    elem2.id = prefix + '_2'
    svgN.append(elem2)

    const doc = new draw.Drawing(svgN)

    assert.equal(doc.getId(), prefix + '_0')

    assert.equal(doc.getNextId(), prefix + '_1')
    assert.equal(doc.getId(), prefix + '_1')

    assert.equal(doc.getNextId(), prefix + '_3')
    assert.equal(doc.getId(), prefix + '_3')

    assert.equal(doc.getNextId(), prefix + '_4')
    assert.equal(doc.getId(), prefix + '_4')

    cleanupSVG(svgN)
  })

  it('Test getId() and getNextId() with prefix with nonce', function () {
    const PREFIX = 'Bar-'
    const doc = new draw.Drawing(svgN, PREFIX)

    const prefix = PREFIX + NONCE + '_'
    assert.equal(doc.getId(), prefix + '0')

    assert.equal(doc.getNextId(), prefix + '1')
    assert.equal(doc.getId(), prefix + '1')

    assert.equal(doc.getNextId(), prefix + '2')
    assert.equal(doc.getId(), prefix + '2')

    assert.equal(doc.getNextId(), prefix + '3')
    assert.equal(doc.getId(), prefix + '3')

    cleanupSVG(svgN)
  })

  it('Test releaseId()', function () {
    const doc = new draw.Drawing(svg)

    const firstId = doc.getNextId()
    /* const secondId = */ doc.getNextId()

    const result = doc.releaseId(firstId)
    assert.ok(result)
    assert.equal(doc.getNextId(), firstId)
    assert.equal(doc.getNextId(), 'svg_3')

    assert.ok(!doc.releaseId('bad-id'))
    assert.ok(doc.releaseId(firstId))
    assert.ok(!doc.releaseId(firstId))

    cleanupSVG(svg)
  })

  it('Test getNumLayers', function () {
    const drawing = new draw.Drawing(svg)
    assert.equal(typeof drawing.getNumLayers, typeof function () { /* empty fn */ })
    assert.equal(drawing.getNumLayers(), 0)

    setupSVGWith3Layers(svg)
    drawing.identifyLayers()

    assert.equal(drawing.getNumLayers(), 3)

    cleanupSVG(svg)
  })

  it('Test hasLayer', function () {
    setupSVGWith3Layers(svg)
    const drawing = new draw.Drawing(svg)
    drawing.identifyLayers()

    assert.equal(typeof drawing.hasLayer, typeof function () { /* empty fn */ })
    assert.ok(!drawing.hasLayer('invalid-layer'))

    assert.ok(drawing.hasLayer(LAYER3))
    assert.ok(drawing.hasLayer(LAYER2))
    assert.ok(drawing.hasLayer(LAYER1))

    cleanupSVG(svg)
  })

  it('Test identifyLayers() with empty document', function () {
    const drawing = new draw.Drawing(svg)
    assert.equal(drawing.getCurrentLayer(), null)
    // By default, an empty document gets an empty group created.
    drawing.identifyLayers()

    // Check that <svg> element now has one child node
    assert.ok(drawing.getSvgElem().hasChildNodes())
    assert.equal(drawing.getSvgElem().childNodes.length, 1)

    // Check that all_layers are correctly set up.
    assert.equal(drawing.getNumLayers(), 1)
    const emptyLayer = drawing.all_layers[0]
    assert.ok(emptyLayer)
    const layerGroup = emptyLayer.getGroup()
    assert.equal(layerGroup, drawing.getSvgElem().firstChild)
    assert.equal(layerGroup.tagName, 'g')
    assert.equal(layerGroup.getAttribute('class'), LAYER_CLASS)
    assert.ok(layerGroup.hasChildNodes())
    assert.equal(layerGroup.childNodes.length, 1)
    const firstChild = layerGroup.childNodes.item(0)
    assert.equal(firstChild.tagName, 'title')

    cleanupSVG(svg)
  })

  it('Test identifyLayers() with some layers', function () {
    const drawing = new draw.Drawing(svg)
    setupSVGWith3Layers(svg)

    assert.equal(svg.childNodes.length, 3)

    drawing.identifyLayers()

    assert.equal(drawing.getNumLayers(), 3)
    assert.equal(drawing.all_layers[0].getGroup(), svg.childNodes.item(0))
    assert.equal(drawing.all_layers[1].getGroup(), svg.childNodes.item(1))
    assert.equal(drawing.all_layers[2].getGroup(), svg.childNodes.item(2))

    assert.equal(drawing.all_layers[0].getGroup().getAttribute('class'), LAYER_CLASS)
    assert.equal(drawing.all_layers[1].getGroup().getAttribute('class'), LAYER_CLASS)
    assert.equal(drawing.all_layers[2].getGroup().getAttribute('class'), LAYER_CLASS)

    cleanupSVG(svg)
  })

  it('Test identifyLayers() with some layers and orphans', function () {
    setupSVGWith3Layers(svg)

    const orphan1 = document.createElementNS(NS.SVG, 'rect')
    const orphan2 = document.createElementNS(NS.SVG, 'rect')
    svg.append(orphan1, orphan2)

    assert.equal(svg.childNodes.length, 5)

    const drawing = new draw.Drawing(svg)
    drawing.identifyLayers()

    assert.equal(drawing.getNumLayers(), 4)
    assert.equal(drawing.all_layers[0].getGroup(), svg.childNodes.item(0))
    assert.equal(drawing.all_layers[1].getGroup(), svg.childNodes.item(1))
    assert.equal(drawing.all_layers[2].getGroup(), svg.childNodes.item(2))
    assert.equal(drawing.all_layers[3].getGroup(), svg.childNodes.item(3))

    assert.equal(drawing.all_layers[0].getGroup().getAttribute('class'), LAYER_CLASS)
    assert.equal(drawing.all_layers[1].getGroup().getAttribute('class'), LAYER_CLASS)
    assert.equal(drawing.all_layers[2].getGroup().getAttribute('class'), LAYER_CLASS)
    assert.equal(drawing.all_layers[3].getGroup().getAttribute('class'), LAYER_CLASS)

    const layer4 = drawing.all_layers[3].getGroup()
    assert.equal(layer4.tagName, 'g')
    assert.equal(layer4.childNodes.length, 3)
    assert.equal(layer4.childNodes.item(1), orphan1)
    assert.equal(layer4.childNodes.item(2), orphan2)

    cleanupSVG(svg)
  })

  it('Test getLayerName()', function () {
    const drawing = new draw.Drawing(svg)
    setupSVGWith3Layers(svg)

    drawing.identifyLayers()

    assert.equal(drawing.getNumLayers(), 3)
    assert.equal(drawing.getLayerName(0), LAYER1)
    assert.equal(drawing.getLayerName(1), LAYER2)
    assert.equal(drawing.getLayerName(2), LAYER3)

    cleanupSVG(svg)
  })

  it('Test getCurrentLayer()', function () {
    const drawing = new draw.Drawing(svg)
    setupSVGWith3Layers(svg)
    drawing.identifyLayers()

    assert.ok(drawing.getCurrentLayer)
    assert.equal(typeof drawing.getCurrentLayer, typeof function () { /* empty fn */ })
    assert.ok(drawing.getCurrentLayer())
    assert.equal(drawing.getCurrentLayer(), drawing.all_layers[2].getGroup())

    cleanupSVG(svg)
  })

  it('Test setCurrentLayer() and getCurrentLayerName()', function () {
    const drawing = new draw.Drawing(svg)
    setupSVGWith3Layers(svg)
    drawing.identifyLayers()

    assert.ok(drawing.setCurrentLayer)
    assert.equal(typeof drawing.setCurrentLayer, typeof function () { /* empty fn */ })

    drawing.setCurrentLayer(LAYER2)
    assert.equal(drawing.getCurrentLayerName(), LAYER2)
    assert.equal(drawing.getCurrentLayer(), drawing.all_layers[1].getGroup())

    drawing.setCurrentLayer(LAYER3)
    assert.equal(drawing.getCurrentLayerName(), LAYER3)
    assert.equal(drawing.getCurrentLayer(), drawing.all_layers[2].getGroup())

    cleanupSVG(svg)
  })

  it('Test setCurrentLayerName()', function () {
    const mockHrService = {
      changeElement () {
        // empty
      }
    }
    addOwnSpies(mockHrService)

    const drawing = new draw.Drawing(svg)
    setupSVGWith3Layers(svg)
    drawing.identifyLayers()

    assert.ok(drawing.setCurrentLayerName)
    assert.equal(typeof drawing.setCurrentLayerName, typeof function () { /* empty fn */ })

    const oldName = drawing.getCurrentLayerName()
    const newName = 'New Name'
    assert.ok(drawing.layer_map[oldName])
    assert.equal(drawing.layer_map[newName], undefined) // newName shouldn't exist.
    const result = drawing.setCurrentLayerName(newName, mockHrService)
    assert.equal(result, newName)
    assert.equal(drawing.getCurrentLayerName(), newName)
    // Was the map updated?
    assert.equal(drawing.layer_map[oldName], undefined)
    assert.equal(drawing.layer_map[newName], drawing.current_layer)
    // Was mockHrService called?
    assert.ok(mockHrService.changeElement.calledOnce)
    assert.equal(oldName, mockHrService.changeElement.getCall(0).args[1]['#text'])
    assert.equal(newName, mockHrService.changeElement.getCall(0).args[0].textContent)

    cleanupSVG(svg)
  })

  it('Test createLayer()', function () {
    const mockHrService = {
      startBatchCommand () { /* empty fn */ },
      endBatchCommand () { /* empty fn */ },
      insertElement () { /* empty fn */ }
    }
    addOwnSpies(mockHrService)

    const drawing = new draw.Drawing(svg)
    setupSVGWith3Layers(svg)
    drawing.identifyLayers()

    assert.ok(drawing.createLayer)
    assert.equal(typeof drawing.createLayer, typeof function () { /* empty fn */ })

    const NEW_LAYER_NAME = 'Layer A'
    const layerG = drawing.createLayer(NEW_LAYER_NAME, mockHrService)
    assert.equal(drawing.getNumLayers(), 4)
    assert.equal(layerG, drawing.getCurrentLayer())
    assert.equal(layerG.getAttribute('class'), LAYER_CLASS)
    assert.equal(NEW_LAYER_NAME, drawing.getCurrentLayerName())
    assert.equal(NEW_LAYER_NAME, drawing.getLayerName(3))

    assert.equal(layerG, mockHrService.insertElement.getCall(0).args[0])
    assert.ok(mockHrService.startBatchCommand.calledOnce)
    assert.ok(mockHrService.endBatchCommand.calledOnce)

    cleanupSVG(svg)
  })

  it('Test mergeLayer()', function () {
    const mockHrService = {
      startBatchCommand () { /* empty fn */ },
      endBatchCommand () { /* empty fn */ },
      moveElement () { /* empty fn */ },
      removeElement () { /* empty fn */ }
    }
    addOwnSpies(mockHrService)

    const drawing = new draw.Drawing(svg)
    const layers = setupSVGWith3Layers(svg)
    const elementCount = createSomeElementsInGroup(layers[2]) + 1 // +1 for title element
    assert.equal(layers[1].childElementCount, 1)
    assert.equal(layers[2].childElementCount, elementCount)
    drawing.identifyLayers()
    assert.equal(drawing.getCurrentLayer(), layers[2])

    assert.ok(drawing.mergeLayer)
    assert.equal(typeof drawing.mergeLayer, typeof function () { /* empty fn */ })

    drawing.mergeLayer(mockHrService)

    assert.equal(drawing.getNumLayers(), 2)
    assert.equal(svg.childElementCount, 2)
    assert.equal(drawing.getCurrentLayer(), layers[1])
    assert.equal(layers[1].childElementCount, elementCount)

    // check history record
    assert.ok(mockHrService.startBatchCommand.calledOnce)
    assert.ok(mockHrService.endBatchCommand.calledOnce)
    assert.equal(mockHrService.startBatchCommand.getCall(0).args[0], 'Merge Layer')
    assert.equal(mockHrService.moveElement.callCount, elementCount - 1) // -1 because the title was not moved.
    assert.equal(mockHrService.removeElement.callCount, 2) // remove group and title.

    cleanupSVG(svg)
  })

  it('Test mergeLayer() when no previous layer to merge', function () {
    const mockHrService = {
      startBatchCommand () { /* empty fn */ },
      endBatchCommand () { /* empty fn */ },
      moveElement () { /* empty fn */ },
      removeElement () { /* empty fn */ }
    }
    addOwnSpies(mockHrService)

    const drawing = new draw.Drawing(svg)
    const layers = setupSVGWith3Layers(svg)
    drawing.identifyLayers()
    drawing.setCurrentLayer(LAYER1)
    assert.equal(drawing.getCurrentLayer(), layers[0])

    drawing.mergeLayer(mockHrService)

    assert.equal(drawing.getNumLayers(), 3)
    assert.equal(svg.childElementCount, 3)
    assert.equal(drawing.getCurrentLayer(), layers[0])
    assert.equal(layers[0].childElementCount, 1)
    assert.equal(layers[1].childElementCount, 1)
    assert.equal(layers[2].childElementCount, 1)

    // check history record
    assert.equal(mockHrService.startBatchCommand.callCount, 0)
    assert.equal(mockHrService.endBatchCommand.callCount, 0)
    assert.equal(mockHrService.moveElement.callCount, 0)
    assert.equal(mockHrService.removeElement.callCount, 0)

    cleanupSVG(svg)
  })

  it('Test mergeAllLayers()', function () {
    const mockHrService = {
      startBatchCommand () { /* empty fn */ },
      endBatchCommand () { /* empty fn */ },
      moveElement () { /* empty fn */ },
      removeElement () { /* empty fn */ }
    }
    addOwnSpies(mockHrService)

    const drawing = new draw.Drawing(svg)
    const layers = setupSVGWith3Layers(svg)
    const elementCount = createSomeElementsInGroup(layers[0]) + 1 // +1 for title element
    createSomeElementsInGroup(layers[1])
    createSomeElementsInGroup(layers[2])
    assert.equal(layers[0].childElementCount, elementCount)
    assert.equal(layers[1].childElementCount, elementCount)
    assert.equal(layers[2].childElementCount, elementCount)
    drawing.identifyLayers()

    assert.ok(drawing.mergeAllLayers)
    assert.equal(typeof drawing.mergeAllLayers, typeof function () { /* empty fn */ })

    drawing.mergeAllLayers(mockHrService)

    assert.equal(drawing.getNumLayers(), 1)
    assert.equal(svg.childElementCount, 1)
    assert.equal(drawing.getCurrentLayer(), layers[0])
    assert.equal(layers[0].childElementCount, elementCount * 3 - 2) // -2 because two titles were deleted.

    // check history record
    assert.equal(mockHrService.startBatchCommand.callCount, 3) // mergeAllLayers + 2 * mergeLayer
    assert.equal(mockHrService.endBatchCommand.callCount, 3)
    assert.equal(mockHrService.startBatchCommand.getCall(0).args[0], 'Merge all Layers')
    assert.equal(mockHrService.startBatchCommand.getCall(1).args[0], 'Merge Layer')
    assert.equal(mockHrService.startBatchCommand.getCall(2).args[0], 'Merge Layer')
    // moveElement count is times 3 instead of 2, because one layer's elements were moved twice.
    // moveElement count is minus 3 because the three titles were not moved.
    assert.equal(mockHrService.moveElement.callCount, elementCount * 3 - 3)
    assert.equal(mockHrService.removeElement.callCount, 2 * 2) // remove group and title twice.

    cleanupSVG(svg)
  })

  it('Test cloneLayer()', function () {
    const mockHrService = {
      startBatchCommand () { /* empty fn */ },
      endBatchCommand () { /* empty fn */ },
      insertElement () { /* empty fn */ }
    }
    addOwnSpies(mockHrService)

    const drawing = new draw.Drawing(svg)
    const layers = setupSVGWith3Layers(svg)
    const layer3 = layers[2]
    const elementCount = createSomeElementsInGroup(layer3) + 1 // +1 for title element
    assert.equal(layer3.childElementCount, elementCount)
    drawing.identifyLayers()

    assert.ok(drawing.cloneLayer)
    assert.equal(typeof drawing.cloneLayer, typeof function () { /* empty fn */ })

    const clone = drawing.cloneLayer('clone', mockHrService)

    assert.equal(drawing.getNumLayers(), 4)
    assert.equal(svg.childElementCount, 4)
    assert.equal(drawing.getCurrentLayer(), clone)
    assert.equal(clone.childElementCount, elementCount)

    // check history record
    assert.ok(mockHrService.startBatchCommand.calledOnce) // mergeAllLayers + 2 * mergeLayer
    assert.ok(mockHrService.endBatchCommand.calledOnce)
    assert.equal(mockHrService.startBatchCommand.getCall(0).args[0], 'Duplicate Layer')
    assert.equal(mockHrService.insertElement.callCount, 1)
    assert.equal(mockHrService.insertElement.getCall(0).args[0], clone)

    // check that path is cloned properly
    assert.equal(clone.childNodes.length, elementCount)
    const path = clone.childNodes[1]
    assert.equal(path.id, 'svg_1')
    assert.equal(path.getAttribute('d'), PATH_ATTR.d)
    assert.equal(path.getAttribute('transform'), PATH_ATTR.transform)
    assert.equal(path.getAttribute('fill'), PATH_ATTR.fill)
    assert.equal(path.getAttribute('stroke'), PATH_ATTR.stroke)
    assert.equal(path.getAttribute('stroke-width'), PATH_ATTR['stroke-width'])

    // check that g is cloned properly
    const g = clone.childNodes[4]
    assert.equal(g.childNodes.length, 1)
    assert.equal(g.id, 'svg_4')

    cleanupSVG(svg)
  })

  it('Test getLayerVisibility()', function () {
    const drawing = new draw.Drawing(svg)
    setupSVGWith3Layers(svg)
    drawing.identifyLayers()

    assert.ok(drawing.getLayerVisibility)
    assert.equal(typeof drawing.getLayerVisibility, typeof function () { /* empty fn */ })
    assert.ok(drawing.getLayerVisibility(LAYER1))
    assert.ok(drawing.getLayerVisibility(LAYER2))
    assert.ok(drawing.getLayerVisibility(LAYER3))

    cleanupSVG(svg)
  })

  it('Test setLayerVisibility()', function () {
    const drawing = new draw.Drawing(svg)
    setupSVGWith3Layers(svg)
    drawing.identifyLayers()

    assert.ok(drawing.setLayerVisibility)
    assert.equal(typeof drawing.setLayerVisibility, typeof function () { /* empty fn */ })

    drawing.setLayerVisibility(LAYER3, false)
    drawing.setLayerVisibility(LAYER2, true)
    drawing.setLayerVisibility(LAYER1, false)

    assert.ok(!drawing.getLayerVisibility(LAYER1))
    assert.ok(drawing.getLayerVisibility(LAYER2))
    assert.ok(!drawing.getLayerVisibility(LAYER3))

    drawing.setLayerVisibility(LAYER3, 'test-string')
    assert.ok(!drawing.getLayerVisibility(LAYER3))

    cleanupSVG(svg)
  })

  it('Test getLayerOpacity()', function () {
    const drawing = new draw.Drawing(svg)
    setupSVGWith3Layers(svg)
    drawing.identifyLayers()

    assert.ok(drawing.getLayerOpacity)
    assert.equal(typeof drawing.getLayerOpacity, typeof function () { /* empty fn */ })
    assert.strictEqual(drawing.getLayerOpacity(LAYER1), 1.0)
    assert.strictEqual(drawing.getLayerOpacity(LAYER2), 1.0)
    assert.strictEqual(drawing.getLayerOpacity(LAYER3), 1.0)

    cleanupSVG(svg)
  })

  it('Test setLayerOpacity()', function () {
    const drawing = new draw.Drawing(svg)
    setupSVGWith3Layers(svg)
    drawing.identifyLayers()

    assert.ok(drawing.setLayerOpacity)
    assert.equal(typeof drawing.setLayerOpacity, typeof function () { /* empty fn */ })

    drawing.setLayerOpacity(LAYER1, 0.4)
    drawing.setLayerOpacity(LAYER2, 'invalid-string')
    drawing.setLayerOpacity(LAYER3, -1.4)

    assert.strictEqual(drawing.getLayerOpacity(LAYER1), 0.4)
    assert.strictEqual(drawing.getLayerOpacity(LAYER2), 1.0)
    assert.strictEqual(drawing.getLayerOpacity(LAYER3), 1.0)

    drawing.setLayerOpacity(LAYER3, 100)
    assert.strictEqual(drawing.getLayerOpacity(LAYER3), 1.0)

    cleanupSVG(svg)
  })

  it('Test deleteCurrentLayer()', function () {
    const drawing = new draw.Drawing(svg)
    setupSVGWith3Layers(svg)
    drawing.identifyLayers()

    drawing.setCurrentLayer(LAYER2)

    const curLayer = drawing.getCurrentLayer()
    assert.equal(curLayer, drawing.all_layers[1].getGroup())
    const deletedLayer = drawing.deleteCurrentLayer()

    assert.equal(curLayer, deletedLayer)
    assert.equal(drawing.getNumLayers(), 2)
    assert.equal(LAYER1, drawing.all_layers[0].getName())
    assert.equal(LAYER3, drawing.all_layers[1].getName())
    assert.equal(drawing.getCurrentLayer(), drawing.all_layers[1].getGroup())
  })

  it('Test svgedit.draw.randomizeIds()', function () {
    // Confirm in LET_DOCUMENT_DECIDE mode that the document decides
    // if there is a nonce.
    let drawing = new draw.Drawing(svgN.cloneNode(true))
    assert.ok(drawing.getNonce())

    drawing = new draw.Drawing(svg.cloneNode(true))
    assert.ok(!drawing.getNonce())

    // Confirm that a nonce is set once we're in ALWAYS_RANDOMIZE mode.
    draw.randomizeIds(true, drawing)
    assert.ok(drawing.getNonce())

    // Confirm new drawings in ALWAYS_RANDOMIZE mode have a nonce.
    drawing = new draw.Drawing(svg.cloneNode(true))
    assert.ok(drawing.getNonce())

    drawing.clearNonce()
    assert.ok(!drawing.getNonce())

    // Confirm new drawings in NEVER_RANDOMIZE mode do not have a nonce
    // but that their se:nonce attribute is left alone.
    draw.randomizeIds(false, drawing)
    assert.ok(!drawing.getNonce())
    assert.ok(drawing.getSvgElem().getAttributeNS(NS.SE, 'nonce'))

    drawing = new draw.Drawing(svg.cloneNode(true))
    assert.ok(!drawing.getNonce())

    drawing = new draw.Drawing(svgN.cloneNode(true))
    assert.ok(!drawing.getNonce())
  })
})