Add back support for IE 11

js/tests/browsers.js

@@ -30,6 +30,13 @@ const browsers = {
     browser: 'Edge',
     browser_version: 'latest'
   },
+  ie11Win10: {
+    base: 'BrowserStack',
+    os: 'Windows',
+    os_version: '10',
+    browser: 'IE',
+    browser_version: '11.0'
+  },
   chromeWin10: {
     base: 'BrowserStack',
     os: 'Windows',

js/tests/karma.conf.js

@@ -79,8 +79,9 @@ if (bundle) {
   conf.detectBrowsers = detectBrowsers
   files = files.concat([
     jqueryFile,
+    'js/tests/unit/tests-polyfills.js',
     'dist/js/bootstrap.js',
-    'js/tests/unit/*.js'
+    'js/tests/unit/!(tests-polyfills).js'
   ])
 } else if (browserStack) {
   conf.hostname = ip.address()
@@ -97,6 +98,7 @@ if (bundle) {
   reporters.push('BrowserStack')
   files = files.concat([
     jqueryFile,
+    'js/tests/unit/tests-polyfills.js',
     'js/coverage/dist/util/util.js',
     'js/coverage/dist/util/sanitizer.js',
     'js/coverage/dist/dom/polyfill.js',
@@ -107,7 +109,7 @@ if (bundle) {
     'js/coverage/dist/dom/!(polyfill).js',
     'js/coverage/dist/tooltip.js',
     'js/coverage/dist/!(util|index|tooltip).js', // include all of our js/dist files except util.js, index.js and tooltip.js
-    'js/tests/unit/*.js',
+    'js/tests/unit/!(tests-polyfills).js',
     'js/tests/unit/dom/*.js',
     'js/tests/unit/util/*.js'
   ])
@@ -121,6 +123,7 @@ if (bundle) {
   )
   files = files.concat([
     jqueryFile,
+    'js/tests/unit/tests-polyfills.js',
     'js/coverage/dist/util/util.js',
     'js/coverage/dist/util/sanitizer.js',
     'js/coverage/dist/dom/polyfill.js',
@@ -131,7 +134,7 @@ if (bundle) {
     'js/coverage/dist/dom/!(polyfill).js',
     'js/coverage/dist/tooltip.js',
     'js/coverage/dist/!(util|index|tooltip).js', // include all of our js/dist files except util.js, index.js and tooltip.js
-    'js/tests/unit/*.js',
+    'js/tests/unit/!(tests-polyfills).js',
     'js/tests/unit/dom/*.js',
     'js/tests/unit/util/*.js'
   ])

js/tests/unit/modal.js

@@ -731,7 +731,14 @@ $(function () {
   })
 
   QUnit.test('should enforce focus', function (assert) {
-    assert.expect(2)
+    var isIE11 = Boolean(window.MSInputMethodContext) && Boolean(document.documentMode)
+
+    if (isIE11) {
+      assert.expect(1)
+    } else {
+      assert.expect(2)
+    }
+
     var done = assert.async()
 
     var $modal = $([
@@ -759,14 +766,18 @@ $(function () {
         done()
       }
 
-      document.addEventListener('focusin', focusInListener)
+      if (isIE11) {
+        done()
+      } else {
+        document.addEventListener('focusin', focusInListener)
 
-      var focusInEvent = new Event('focusin')
-      Object.defineProperty(focusInEvent, 'target', {
-        value: $('#qunit-fixture')[0]
-      })
+        var focusInEvent = new Event('focusin')
+        Object.defineProperty(focusInEvent, 'target', {
+          value: $('#qunit-fixture')[0]
+        })
 
-      document.dispatchEvent(focusInEvent)
+        document.dispatchEvent(focusInEvent)
+      }
     })
       .bootstrapModal('show')
   })

js/tests/unit/tests-polyfills.js

@@ -0,0 +1,28 @@
+// Polyfills for our unit tests
+(function () {
+  'use strict'
+
+  // Event constructor shim
+  if (!window.Event || typeof window.Event !== 'function') {
+    var origEvent = window.Event
+    window.Event = function (inType, params) {
+      params = params || {}
+      var e = document.createEvent('Event')
+      e.initEvent(inType, Boolean(params.bubbles), Boolean(params.cancelable))
+      return e
+    }
+
+    window.Event.prototype = origEvent.prototype
+  }
+
+  if (typeof window.CustomEvent !== 'function') {
+    window.CustomEvent = function (event, params) {
+      params = params || { bubbles: false, cancelable: false, detail: null }
+      var evt = document.createEvent('CustomEvent')
+      evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail)
+      return evt
+    }
+
+    CustomEvent.prototype = window.Event.prototype
+  }
+})()