import * as units from '../../../instrumented/svgcanvas/units.js'

describe('units', function () {
  /**
   * Set up tests, supplying mock data.
   * @returns {void}
   */
  beforeEach(() => {
    document.body.textContent = ''
    const anchor = document.createElement('div')
    anchor.id = 'anchor'
    anchor.style.visibility = 'hidden'

    const elementsContainer = document.createElement('div')
    elementsContainer.id = 'elementsContainer'

    const uniqueId = document.createElement('div')
    uniqueId.id = 'uniqueId'
    uniqueId.style.visibility = 'hidden'

    const nonUniqueId = document.createElement('div')
    nonUniqueId.id = 'nonUniqueId'
    nonUniqueId.style.visibility = 'hidden'

    elementsContainer.append(uniqueId, nonUniqueId)

    document.body.append(anchor, elementsContainer)

    units.init(
      /**
      * @implements {module:units.ElementContainer}
      */
      {
        getBaseUnit () { return 'cm' },
        getHeight () { return 600 },
        getWidth () { return 800 },
        getRoundDigits () { return 4 },
        getElement (elementId) { return document.getElementById(elementId) }
      }
    )
  })

  it('Test svgedit.units package', function () {
    assert.ok(units)
    assert.equal(typeof units, typeof {})
  })

  it('Test svgedit.units.shortFloat()', function () {
    assert.ok(units.shortFloat)
    assert.equal(typeof units.shortFloat, typeof function () { /* empty fn */ })

    const { shortFloat } = units
    assert.equal(shortFloat(0.00000001), 0)
    assert.equal(shortFloat(1), 1)
    assert.equal(shortFloat(3.45678), 3.4568)
    assert.equal(shortFloat(1.23443), 1.2344)
    assert.equal(shortFloat(1.23455), 1.2346)
  })

  it('Test svgedit.units.isValidUnit()', function () {
    assert.ok(units.isValidUnit)
    assert.equal(typeof units.isValidUnit, typeof function () { /* empty fn */ })

    const { isValidUnit } = units
    assert.ok(isValidUnit('0'))
    assert.ok(isValidUnit('1'))
    assert.ok(isValidUnit('1.1'))
    assert.ok(isValidUnit('-1.1'))
    assert.ok(isValidUnit('.6mm'))
    assert.ok(isValidUnit('-.6cm'))
    assert.ok(isValidUnit('6000in'))
    assert.ok(isValidUnit('6px'))
    assert.ok(isValidUnit('6.3pc'))
    assert.ok(isValidUnit('-0.4em'))
    assert.ok(isValidUnit('-0.ex'))
    assert.ok(isValidUnit('40.123%'))

    assert.equal(isValidUnit('id', 'uniqueId', document.getElementById('uniqueId')), true)
    assert.equal(isValidUnit('id', 'newId', document.getElementById('uniqueId')), true)
    assert.equal(isValidUnit('id', 'uniqueId'), false)
    assert.equal(isValidUnit('id', 'uniqueId', document.getElementById('nonUniqueId')), false)
  })

  it('Test svgedit.units.convertUnit()', function () {
    assert.ok(units.convertUnit)
    assert.equal(typeof units.convertUnit, typeof function () { /* empty fn */ })
    // cm in default setup
    assert.equal(units.convertUnit(42), 1.1113)
    assert.equal(units.convertUnit(42, 'px'), 42)
  })
})