fix(data): do not use data object in our unit tests

js/src/alert.js

@@ -137,6 +137,10 @@ class Alert {
       }
     })
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**

js/src/button.js

@@ -112,6 +112,10 @@ class Button {
     if (triggerChangeEvent) {
       this._element.classList.toggle(ClassName.ACTIVE)
     }
+
+    static _getInstance(element) {
+      return Data.getData(element, DATA_KEY)
+    }
   }
 
   dispose() {

js/src/carousel.js

@@ -579,6 +579,10 @@ class Carousel {
 
     event.preventDefault()
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**
@@ -597,7 +601,6 @@ EventHandler.on(window, Event.LOAD_DATA_API, () => {
   }
 })
 
-
 /**
  * ------------------------------------------------------------------------
  * jQuery

js/src/collapse.js

@@ -373,6 +373,10 @@ class Collapse {
       Collapse._collapseInterface(this, config)
     })
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**

js/src/dom/polyfill.js

@@ -0,0 +1,94 @@
+import EventHandler from './eventHandler'
+
+const Polyfill = (() => {
+  // defaultPrevented is broken in IE.
+  // https://connect.microsoft.com/IE/feedback/details/790389/event-defaultprevented-returns-false-after-preventdefault-was-called
+  const workingDefaultPrevented = (() => {
+    const e = document.createEvent('CustomEvent')
+    e.initEvent('Bootstrap', true, true)
+    e.preventDefault()
+    return e.defaultPrevented
+  })()
+
+  let defaultPreventedPreservedOnDispatch = true
+
+  // CustomEvent polyfill for IE (see: https://mzl.la/2v76Zvn)
+  if (typeof window.CustomEvent !== 'function') {
+    window.CustomEvent = (event, params) => {
+      params = params || {
+        bubbles: false,
+        cancelable: false,
+        detail: null
+      }
+      const evt = document.createEvent('CustomEvent')
+      evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail)
+      if (!workingDefaultPrevented) {
+        const origPreventDefault = Event.prototype.preventDefault
+        evt.preventDefault = () => {
+          if (!evt.cancelable) {
+            return
+          }
+
+          origPreventDefault.call(evt)
+          Object.defineProperty(evt, 'defaultPrevented', {
+            get() {
+              return true
+            },
+            configurable: true
+          })
+        }
+      }
+      return evt
+    }
+
+    window.CustomEvent.prototype = window.Event.prototype
+  } else {
+    // MSEdge resets defaultPrevented flag upon dispatchEvent call if at least one listener is attached
+    defaultPreventedPreservedOnDispatch = (() => {
+      const e = new CustomEvent('Bootstrap', {
+        cancelable: true
+      })
+
+      const element = document.createElement('div')
+      element.addEventListener('Bootstrap', () => null)
+
+      e.preventDefault()
+      element.dispatchEvent(e)
+      return e.defaultPrevented
+    })()
+  }
+
+  // Event constructor shim
+  if (!window.Event || typeof window.Event !== 'function') {
+    const origEvent = window.Event
+    window.Event = (inType, params) => {
+      params = params || {}
+      const e = document.createEvent('Event')
+      e.initEvent(inType, Boolean(params.bubbles), Boolean(params.cancelable))
+      return e
+    }
+    window.Event.prototype = origEvent.prototype
+  }
+
+  // focusin and focusout polyfill
+  if (typeof window.onfocusin === 'undefined') {
+    (() => {
+      function listenerFocus(event) {
+        EventHandler.trigger(event.target, 'focusin')
+      }
+      function listenerBlur(event) {
+        EventHandler.trigger(event.target, 'focusout')
+      }
+      EventHandler.on(document, 'focus', 'input', listenerFocus)
+      EventHandler.on(document, 'blur', 'input', listenerBlur)
+    })()
+  }
+
+  return {
+    get defaultPreventedPreservedOnDispatch() {
+      return defaultPreventedPreservedOnDispatch
+    }
+  }
+})()
+
+export default Polyfill

js/src/dropdown.js

@@ -505,6 +505,10 @@ class Dropdown {
 
     items[index].focus()
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**

js/src/index.js

@@ -5,7 +5,7 @@ import Collapse from './collapse'
 import Dropdown from './dropdown'
 import Modal from './modal'
 import Popover from './popover'
-import Scrollspy from './scrollspy'
+import ScrollSpy from './scrollspy'
 import Tab from './tab'
 import Toast from './toast'
 import Tooltip from './tooltip'
@@ -27,7 +27,7 @@ export {
   Dropdown,
   Modal,
   Popover,
-  Scrollspy,
+  ScrollSpy,
   Tab,
   Toast,
   Tooltip

js/src/modal.js

@@ -498,6 +498,10 @@ class Modal {
     } else {
       document.body.style.paddingRight = ''
     }
+
+    static _getInstance(element) {
+      return Data.getData(element, DATA_KEY)
+    }
   }
 
   _getScrollbarWidth() { // thx d.walsh

js/src/popover.js

@@ -165,6 +165,10 @@ class Popover extends Tooltip {
       }
     })
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**

js/src/scrollspy.js

@@ -308,6 +308,10 @@ class ScrollSpy {
       }
     })
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**

js/src/tab.js

@@ -219,6 +219,10 @@ class Tab {
       }
     })
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**

js/src/tooltip.js

@@ -741,6 +741,10 @@ class Tooltip {
         .map((token) => token.trim())
         .forEach((tClass) => tip.classList.remove(tClass))
     }
+
+    static _getInstance(element) {
+      return Data.getData(element, DATA_KEY)
+    }
   }
 
   _handlePopperPlacementChange(popperData) {