Merge branch 'main' into global-focus-varsglobal-focus-vars

1 files changed, 747 insertions, 0 deletions

diff --git a/js/tests/unit/offcanvas.spec.js b/js/tests/unit/offcanvas.spec.js
new file mode 100644
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--- /dev/null
+++ b/js/tests/unit/offcanvas.spec.js
@@ -0,0 +1,747 @@
+import Offcanvas from '../../src/offcanvas'
+import EventHandler from '../../src/dom/event-handler'
+
+/** Test helpers */
+import { clearBodyAndDocument, clearFixture, createEvent, getFixture, jQueryMock } from '../helpers/fixture'
+import { isVisible } from '../../src/util'
+import ScrollBarHelper from '../../src/util/scrollbar'
+
+describe('Offcanvas', () => {
+  let fixtureEl
+
+  beforeAll(() => {
+    fixtureEl = getFixture()
+  })
+
+  afterEach(() => {
+    clearFixture()
+    document.body.classList.remove('offcanvas-open')
+    clearBodyAndDocument()
+  })
+
+  beforeEach(() => {
+    clearBodyAndDocument()
+  })
+
+  describe('VERSION', () => {
+    it('should return plugin version', () => {
+      expect(Offcanvas.VERSION).toEqual(jasmine.any(String))
+    })
+  })
+
+  describe('Default', () => {
+    it('should return plugin default config', () => {
+      expect(Offcanvas.Default).toEqual(jasmine.any(Object))
+    })
+  })
+
+  describe('DATA_KEY', () => {
+    it('should return plugin data key', () => {
+      expect(Offcanvas.DATA_KEY).toEqual('bs.offcanvas')
+    })
+  })
+
+  describe('constructor', () => {
+    it('should call hide when a element with data-bs-dismiss="offcanvas" is clicked', () => {
+      fixtureEl.innerHTML = [
+        '<div class="offcanvas">',
+        '  <a href="#" data-bs-dismiss="offcanvas">Close</a>',
+        '</div>'
+      ].join('')
+
+      const offCanvasEl = fixtureEl.querySelector('.offcanvas')
+      const closeEl = fixtureEl.querySelector('a')
+      const offCanvas = new Offcanvas(offCanvasEl)
+
+      spyOn(offCanvas, 'hide')
+
+      closeEl.click()
+
+      expect(offCanvas._config.keyboard).toBe(true)
+      expect(offCanvas.hide).toHaveBeenCalled()
+    })
+
+    it('should hide if esc is pressed', () => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('.offcanvas')
+      const offCanvas = new Offcanvas(offCanvasEl)
+      const keyDownEsc = createEvent('keydown')
+      keyDownEsc.key = 'Escape'
+
+      spyOn(offCanvas, 'hide')
+
+      offCanvasEl.dispatchEvent(keyDownEsc)
+
+      expect(offCanvas.hide).toHaveBeenCalled()
+    })
+
+    it('should not hide if esc is not pressed', () => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('.offcanvas')
+      const offCanvas = new Offcanvas(offCanvasEl)
+      const keydownTab = createEvent('keydown')
+      keydownTab.key = 'Tab'
+
+      spyOn(offCanvas, 'hide')
+
+      document.dispatchEvent(keydownTab)
+
+      expect(offCanvas.hide).not.toHaveBeenCalled()
+    })
+
+    it('should not hide if esc is pressed but with keyboard = false', () => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('.offcanvas')
+      const offCanvas = new Offcanvas(offCanvasEl, { keyboard: false })
+      const keyDownEsc = createEvent('keydown')
+      keyDownEsc.key = 'Escape'
+
+      spyOn(offCanvas, 'hide')
+
+      document.dispatchEvent(keyDownEsc)
+
+      expect(offCanvas._config.keyboard).toBe(false)
+      expect(offCanvas.hide).not.toHaveBeenCalled()
+    })
+  })
+
+  describe('config', () => {
+    it('should have default values', () => {
+      fixtureEl.innerHTML = [
+        '<div class="offcanvas">',
+        '</div>'
+      ].join('')
+
+      const offCanvasEl = fixtureEl.querySelector('.offcanvas')
+      const offCanvas = new Offcanvas(offCanvasEl)
+
+      expect(offCanvas._config.backdrop).toEqual(true)
+      expect(offCanvas._backdrop._config.isVisible).toEqual(true)
+      expect(offCanvas._config.keyboard).toEqual(true)
+      expect(offCanvas._config.scroll).toEqual(false)
+    })
+
+    it('should read data attributes and override default config', () => {
+      fixtureEl.innerHTML = [
+        '<div class="offcanvas" data-bs-scroll="true" data-bs-backdrop="false"  data-bs-keyboard="false">',
+        '</div>'
+      ].join('')
+
+      const offCanvasEl = fixtureEl.querySelector('.offcanvas')
+      const offCanvas = new Offcanvas(offCanvasEl)
+
+      expect(offCanvas._config.backdrop).toEqual(false)
+      expect(offCanvas._backdrop._config.isVisible).toEqual(false)
+      expect(offCanvas._config.keyboard).toEqual(false)
+      expect(offCanvas._config.scroll).toEqual(true)
+    })
+
+    it('given a config object must override data attributes', () => {
+      fixtureEl.innerHTML = [
+        '<div class="offcanvas" data-bs-scroll="true" data-bs-backdrop="false"  data-bs-keyboard="false">',
+        '</div>'
+      ].join('')
+
+      const offCanvasEl = fixtureEl.querySelector('.offcanvas')
+      const offCanvas = new Offcanvas(offCanvasEl, {
+        backdrop: true,
+        keyboard: true,
+        scroll: false
+      })
+      expect(offCanvas._config.backdrop).toEqual(true)
+      expect(offCanvas._config.keyboard).toEqual(true)
+      expect(offCanvas._config.scroll).toEqual(false)
+    })
+  })
+  describe('options', () => {
+    it('if scroll is enabled, should allow body to scroll while offcanvas is open', done => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      spyOn(ScrollBarHelper.prototype, 'hide').and.callThrough()
+      spyOn(ScrollBarHelper.prototype, 'reset').and.callThrough()
+      const offCanvasEl = fixtureEl.querySelector('.offcanvas')
+      const offCanvas = new Offcanvas(offCanvasEl, { scroll: true })
+
+      offCanvasEl.addEventListener('shown.bs.offcanvas', () => {
+        expect(ScrollBarHelper.prototype.hide).not.toHaveBeenCalled()
+        offCanvas.hide()
+      })
+      offCanvasEl.addEventListener('hidden.bs.offcanvas', () => {
+        expect(ScrollBarHelper.prototype.reset).not.toHaveBeenCalled()
+        done()
+      })
+      offCanvas.show()
+    })
+
+    it('if scroll is disabled, should call ScrollBarHelper to handle scrollBar on body', done => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      spyOn(ScrollBarHelper.prototype, 'hide').and.callThrough()
+      spyOn(ScrollBarHelper.prototype, 'reset').and.callThrough()
+      const offCanvasEl = fixtureEl.querySelector('.offcanvas')
+      const offCanvas = new Offcanvas(offCanvasEl, { scroll: false })
+
+      offCanvasEl.addEventListener('shown.bs.offcanvas', () => {
+        expect(ScrollBarHelper.prototype.hide).toHaveBeenCalled()
+        offCanvas.hide()
+      })
+      offCanvasEl.addEventListener('hidden.bs.offcanvas', () => {
+        expect(ScrollBarHelper.prototype.reset).toHaveBeenCalled()
+        done()
+      })
+      offCanvas.show()
+    })
+
+    it('should hide a shown element if user click on backdrop', done => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('div')
+      const offCanvas = new Offcanvas(offCanvasEl, { backdrop: true })
+
+      const clickEvent = document.createEvent('MouseEvents')
+      clickEvent.initEvent('mousedown', true, true)
+      spyOn(offCanvas._backdrop._config, 'clickCallback').and.callThrough()
+
+      offCanvasEl.addEventListener('shown.bs.offcanvas', () => {
+        expect(typeof offCanvas._backdrop._config.clickCallback).toBe('function')
+
+        offCanvas._backdrop._getElement().dispatchEvent(clickEvent)
+      })
+
+      offCanvasEl.addEventListener('hidden.bs.offcanvas', () => {
+        expect(offCanvas._backdrop._config.clickCallback).toHaveBeenCalled()
+        done()
+      })
+
+      offCanvas.show()
+    })
+
+    it('should not trap focus if scroll is allowed', done => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('.offcanvas')
+      const offCanvas = new Offcanvas(offCanvasEl, {
+        scroll: true
+      })
+
+      spyOn(offCanvas._focustrap, 'activate').and.callThrough()
+
+      offCanvasEl.addEventListener('shown.bs.offcanvas', () => {
+        expect(offCanvas._focustrap.activate).not.toHaveBeenCalled()
+        done()
+      })
+
+      offCanvas.show()
+    })
+  })
+
+  describe('toggle', () => {
+    it('should call show method if show class is not present', () => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('.offcanvas')
+      const offCanvas = new Offcanvas(offCanvasEl)
+
+      spyOn(offCanvas, 'show')
+
+      offCanvas.toggle()
+
+      expect(offCanvas.show).toHaveBeenCalled()
+    })
+
+    it('should call hide method if show class is present', () => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('.offcanvas')
+      const offCanvas = new Offcanvas(offCanvasEl)
+      offCanvas.show()
+      expect(offCanvasEl.classList.contains('show')).toBe(true)
+
+      spyOn(offCanvas, 'hide')
+
+      offCanvas.toggle()
+
+      expect(offCanvas.hide).toHaveBeenCalled()
+    })
+  })
+
+  describe('show', () => {
+    it('should do nothing if already shown', () => {
+      fixtureEl.innerHTML = '<div class="offcanvas show"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('div')
+      const offCanvas = new Offcanvas(offCanvasEl)
+      offCanvas.show()
+
+      expect(offCanvasEl.classList.contains('show')).toBe(true)
+
+      spyOn(offCanvas._backdrop, 'show').and.callThrough()
+      spyOn(EventHandler, 'trigger').and.callThrough()
+      offCanvas.show()
+
+      expect(EventHandler.trigger).not.toHaveBeenCalled()
+      expect(offCanvas._backdrop.show).not.toHaveBeenCalled()
+    })
+
+    it('should show a hidden element', done => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('div')
+      const offCanvas = new Offcanvas(offCanvasEl)
+      spyOn(offCanvas._backdrop, 'show').and.callThrough()
+
+      offCanvasEl.addEventListener('shown.bs.offcanvas', () => {
+        expect(offCanvasEl.classList.contains('show')).toEqual(true)
+        expect(offCanvas._backdrop.show).toHaveBeenCalled()
+        done()
+      })
+
+      offCanvas.show()
+    })
+
+    it('should not fire shown when show is prevented', done => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('div')
+      const offCanvas = new Offcanvas(offCanvasEl)
+      spyOn(offCanvas._backdrop, 'show').and.callThrough()
+
+      const expectEnd = () => {
+        setTimeout(() => {
+          expect(offCanvas._backdrop.show).not.toHaveBeenCalled()
+          done()
+        }, 10)
+      }
+
+      offCanvasEl.addEventListener('show.bs.offcanvas', e => {
+        e.preventDefault()
+        expectEnd()
+      })
+
+      offCanvasEl.addEventListener('shown.bs.offcanvas', () => {
+        throw new Error('should not fire shown event')
+      })
+
+      offCanvas.show()
+    })
+
+    it('on window load, should make visible an offcanvas element, if its markup contains class "show"', done => {
+      fixtureEl.innerHTML = '<div class="offcanvas show"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('div')
+      spyOn(Offcanvas.prototype, 'show').and.callThrough()
+
+      offCanvasEl.addEventListener('shown.bs.offcanvas', () => {
+        done()
+      })
+
+      window.dispatchEvent(createEvent('load'))
+
+      const instance = Offcanvas.getInstance(offCanvasEl)
+      expect(instance).not.toBeNull()
+      expect(Offcanvas.prototype.show).toHaveBeenCalled()
+    })
+
+    it('should trap focus', done => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('.offcanvas')
+      const offCanvas = new Offcanvas(offCanvasEl)
+
+      spyOn(offCanvas._focustrap, 'activate').and.callThrough()
+
+      offCanvasEl.addEventListener('shown.bs.offcanvas', () => {
+        expect(offCanvas._focustrap.activate).toHaveBeenCalled()
+        done()
+      })
+
+      offCanvas.show()
+    })
+  })
+
+  describe('hide', () => {
+    it('should do nothing if already shown', () => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      spyOn(EventHandler, 'trigger').and.callThrough()
+
+      const offCanvasEl = fixtureEl.querySelector('div')
+      const offCanvas = new Offcanvas(offCanvasEl)
+      spyOn(offCanvas._backdrop, 'hide').and.callThrough()
+
+      offCanvas.hide()
+      expect(offCanvas._backdrop.hide).not.toHaveBeenCalled()
+      expect(EventHandler.trigger).not.toHaveBeenCalled()
+    })
+
+    it('should hide a shown element', done => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('div')
+      const offCanvas = new Offcanvas(offCanvasEl)
+      spyOn(offCanvas._backdrop, 'hide').and.callThrough()
+      offCanvas.show()
+
+      offCanvasEl.addEventListener('hidden.bs.offcanvas', () => {
+        expect(offCanvasEl.classList.contains('show')).toEqual(false)
+        expect(offCanvas._backdrop.hide).toHaveBeenCalled()
+        done()
+      })
+
+      offCanvas.hide()
+    })
+
+    it('should not fire hidden when hide is prevented', done => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('div')
+      const offCanvas = new Offcanvas(offCanvasEl)
+      spyOn(offCanvas._backdrop, 'hide').and.callThrough()
+
+      offCanvas.show()
+
+      const expectEnd = () => {
+        setTimeout(() => {
+          expect(offCanvas._backdrop.hide).not.toHaveBeenCalled()
+          done()
+        }, 10)
+      }
+
+      offCanvasEl.addEventListener('hide.bs.offcanvas', e => {
+        e.preventDefault()
+        expectEnd()
+      })
+
+      offCanvasEl.addEventListener('hidden.bs.offcanvas', () => {
+        throw new Error('should not fire hidden event')
+      })
+
+      offCanvas.hide()
+    })
+
+    it('should release focus trap', done => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('div')
+      const offCanvas = new Offcanvas(offCanvasEl)
+      spyOn(offCanvas._focustrap, 'deactivate').and.callThrough()
+      offCanvas.show()
+
+      offCanvasEl.addEventListener('hidden.bs.offcanvas', () => {
+        expect(offCanvas._focustrap.deactivate).toHaveBeenCalled()
+        done()
+      })
+
+      offCanvas.hide()
+    })
+  })
+
+  describe('dispose', () => {
+    it('should dispose an offcanvas', () => {
+      fixtureEl.innerHTML = '<div class="offcanvas"></div>'
+
+      const offCanvasEl = fixtureEl.querySelector('div')
+      const offCanvas = new Offcanvas(offCanvasEl)
+      const backdrop = offCanvas._backdrop
+      spyOn(backdrop, 'dispose').and.callThrough()
+      const focustrap = offCanvas._focustrap
+      spyOn(focustrap, 'deactivate').and.callThrough()
+
+      expect(Offcanvas.getInstance(offCanvasEl)).toEqual(offCanvas)
+
+      spyOn(EventHandler, 'off')
+
+      offCanvas.dispose()
+
+      expect(backdrop.dispose).toHaveBeenCalled()
+      expect(offCanvas._backdrop).toBeNull()
+      expect(focustrap.deactivate).toHaveBeenCalled()
+      expect(offCanvas._focustrap).toBeNull()
+      expect(Offcanvas.getInstance(offCanvasEl)).toEqual(null)
+    })
+  })
+
+  describe('data-api', () => {
+    it('should not prevent event for input', done => {
+      fixtureEl.innerHTML = [
+        '<input type="checkbox" data-bs-toggle="offcanvas" data-bs-target="#offcanvasdiv1" />',
+        '<div id="offcanvasdiv1" class="offcanvas"></div>'
+      ].join('')
+
+      const target = fixtureEl.querySelector('input')
+      const offCanvasEl = fixtureEl.querySelector('#offcanvasdiv1')
+
+      offCanvasEl.addEventListener('shown.bs.offcanvas', () => {
+        expect(offCanvasEl.classList.contains('show')).toEqual(true)
+        expect(target.checked).toEqual(true)
+        done()
+      })
+
+      target.click()
+    })
+
+    it('should not call toggle on disabled elements', () => {
+      fixtureEl.innerHTML = [
+        '<a href="#" data-bs-toggle="offcanvas" data-bs-target="#offcanvasdiv1" class="disabled"></a>',
+        '<div id="offcanvasdiv1" class="offcanvas"></div>'
+      ].join('')
+
+      const target = fixtureEl.querySelector('a')
+
+      spyOn(Offcanvas.prototype, 'toggle')
+
+      target.click()
+
+      expect(Offcanvas.prototype.toggle).not.toHaveBeenCalled()
+    })
+
+    it('should call hide first, if another offcanvas is open', done => {
+      fixtureEl.innerHTML = [
+        '<button id="btn2" data-bs-toggle="offcanvas" data-bs-target="#offcanvas2" ></button>',
+        '<div id="offcanvas1" class="offcanvas"></div>',
+        '<div id="offcanvas2" class="offcanvas"></div>'
+      ].join('')
+
+      const trigger2 = fixtureEl.querySelector('#btn2')
+      const offcanvasEl1 = document.querySelector('#offcanvas1')
+      const offcanvasEl2 = document.querySelector('#offcanvas2')
+      const offcanvas1 = new Offcanvas(offcanvasEl1)
+
+      offcanvasEl1.addEventListener('shown.bs.offcanvas', () => {
+        trigger2.click()
+      })
+      offcanvasEl1.addEventListener('hidden.bs.offcanvas', () => {
+        expect(Offcanvas.getInstance(offcanvasEl2)).not.toBeNull()
+        done()
+      })
+      offcanvas1.show()
+    })
+
+    it('should focus on trigger element after closing offcanvas', done => {
+      fixtureEl.innerHTML = [
+        '<button id="btn" data-bs-toggle="offcanvas" data-bs-target="#offcanvas" ></button>',
+        '<div id="offcanvas" class="offcanvas"></div>'
+      ].join('')
+
+      const trigger = fixtureEl.querySelector('#btn')
+      const offcanvasEl = fixtureEl.querySelector('#offcanvas')
+      const offcanvas = new Offcanvas(offcanvasEl)
+      spyOn(trigger, 'focus')
+
+      offcanvasEl.addEventListener('shown.bs.offcanvas', () => {
+        offcanvas.hide()
+      })
+      offcanvasEl.addEventListener('hidden.bs.offcanvas', () => {
+        setTimeout(() => {
+          expect(trigger.focus).toHaveBeenCalled()
+          done()
+        }, 5)
+      })
+
+      trigger.click()
+    })
+
+    it('should not focus on trigger element after closing offcanvas, if it is not visible', done => {
+      fixtureEl.innerHTML = [
+        '<button id="btn" data-bs-toggle="offcanvas" data-bs-target="#offcanvas" ></button>',
+        '<div id="offcanvas" class="offcanvas"></div>'
+      ].join('')
+
+      const trigger = fixtureEl.querySelector('#btn')
+      const offcanvasEl = fixtureEl.querySelector('#offcanvas')
+      const offcanvas = new Offcanvas(offcanvasEl)
+      spyOn(trigger, 'focus')
+
+      offcanvasEl.addEventListener('shown.bs.offcanvas', () => {
+        trigger.style.display = 'none'
+        offcanvas.hide()
+      })
+      offcanvasEl.addEventListener('hidden.bs.offcanvas', () => {
+        setTimeout(() => {
+          expect(isVisible(trigger)).toBe(false)
+          expect(trigger.focus).not.toHaveBeenCalled()
+          done()
+        }, 5)
+      })
+
+      trigger.click()
+    })
+  })
+
+  describe('jQueryInterface', () => {
+    it('should create an offcanvas', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+
+      jQueryMock.fn.offcanvas = Offcanvas.jQueryInterface
+      jQueryMock.elements = [div]
+
+      jQueryMock.fn.offcanvas.call(jQueryMock)
+
+      expect(Offcanvas.getInstance(div)).not.toBeNull()
+    })
+
+    it('should not re create an offcanvas', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+      const offCanvas = new Offcanvas(div)
+
+      jQueryMock.fn.offcanvas = Offcanvas.jQueryInterface
+      jQueryMock.elements = [div]
+
+      jQueryMock.fn.offcanvas.call(jQueryMock)
+
+      expect(Offcanvas.getInstance(div)).toEqual(offCanvas)
+    })
+
+    it('should throw error on undefined method', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+      const action = 'undefinedMethod'
+
+      jQueryMock.fn.offcanvas = Offcanvas.jQueryInterface
+      jQueryMock.elements = [div]
+
+      expect(() => {
+        jQueryMock.fn.offcanvas.call(jQueryMock, action)
+      }).toThrowError(TypeError, `No method named "${action}"`)
+    })
+
+    it('should throw error on protected method', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+      const action = '_getConfig'
+
+      jQueryMock.fn.offcanvas = Offcanvas.jQueryInterface
+      jQueryMock.elements = [div]
+
+      expect(() => {
+        jQueryMock.fn.offcanvas.call(jQueryMock, action)
+      }).toThrowError(TypeError, `No method named "${action}"`)
+    })
+
+    it('should throw error if method "constructor" is being called', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+      const action = 'constructor'
+
+      jQueryMock.fn.offcanvas = Offcanvas.jQueryInterface
+      jQueryMock.elements = [div]
+
+      expect(() => {
+        jQueryMock.fn.offcanvas.call(jQueryMock, action)
+      }).toThrowError(TypeError, `No method named "${action}"`)
+    })
+
+    it('should call offcanvas method', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+
+      spyOn(Offcanvas.prototype, 'show')
+
+      jQueryMock.fn.offcanvas = Offcanvas.jQueryInterface
+      jQueryMock.elements = [div]
+
+      jQueryMock.fn.offcanvas.call(jQueryMock, 'show')
+      expect(Offcanvas.prototype.show).toHaveBeenCalled()
+    })
+
+    it('should create a offcanvas with given config', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+
+      jQueryMock.fn.offcanvas = Offcanvas.jQueryInterface
+      jQueryMock.elements = [div]
+
+      jQueryMock.fn.offcanvas.call(jQueryMock, { scroll: true })
+
+      const offcanvas = Offcanvas.getInstance(div)
+      expect(offcanvas).not.toBeNull()
+      expect(offcanvas._config.scroll).toBe(true)
+    })
+  })
+
+  describe('getInstance', () => {
+    it('should return offcanvas instance', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+      const offCanvas = new Offcanvas(div)
+
+      expect(Offcanvas.getInstance(div)).toEqual(offCanvas)
+      expect(Offcanvas.getInstance(div)).toBeInstanceOf(Offcanvas)
+    })
+
+    it('should return null when there is no offcanvas instance', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+
+      expect(Offcanvas.getInstance(div)).toBeNull()
+    })
+  })
+
+  describe('getOrCreateInstance', () => {
+    it('should return offcanvas instance', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+      const offcanvas = new Offcanvas(div)
+
+      expect(Offcanvas.getOrCreateInstance(div)).toEqual(offcanvas)
+      expect(Offcanvas.getInstance(div)).toEqual(Offcanvas.getOrCreateInstance(div, {}))
+      expect(Offcanvas.getOrCreateInstance(div)).toBeInstanceOf(Offcanvas)
+    })
+
+    it('should return new instance when there is no Offcanvas instance', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+
+      expect(Offcanvas.getInstance(div)).toEqual(null)
+      expect(Offcanvas.getOrCreateInstance(div)).toBeInstanceOf(Offcanvas)
+    })
+
+    it('should return new instance when there is no offcanvas instance with given configuration', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+
+      expect(Offcanvas.getInstance(div)).toEqual(null)
+      const offcanvas = Offcanvas.getOrCreateInstance(div, {
+        scroll: true
+      })
+      expect(offcanvas).toBeInstanceOf(Offcanvas)
+
+      expect(offcanvas._config.scroll).toEqual(true)
+    })
+
+    it('should return the instance when exists without given configuration', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+      const offcanvas = new Offcanvas(div, {
+        scroll: true
+      })
+      expect(Offcanvas.getInstance(div)).toEqual(offcanvas)
+
+      const offcanvas2 = Offcanvas.getOrCreateInstance(div, {
+        scroll: false
+      })
+      expect(offcanvas).toBeInstanceOf(Offcanvas)
+      expect(offcanvas2).toEqual(offcanvas)
+
+      expect(offcanvas2._config.scroll).toEqual(true)
+    })
+  })
+})