diff --git a/js/tests/unit/util.js b/js/tests/unit/util.js
index 888ce41fc04b..3cd7d4680c70 100644
--- a/js/tests/unit/util.js
+++ b/js/tests/unit/util.js
@@ -71,6 +71,7 @@ $(function () {
   QUnit.test('Util.findShadowRoot should find the shadow DOM root', function (assert) {
     // Only for newer browsers
     if (typeof document.body.attachShadow !== 'function') {
+      assert.expect(0)
       return
     }
 
diff --git a/js/tests/visual/tooltip.html b/js/tests/visual/tooltip.html
index 023b1e382c2b..7aadc8deadb3 100644
--- a/js/tests/visual/tooltip.html
+++ b/js/tests/visual/tooltip.html
@@ -64,14 +64,14 @@ <h1>Tooltip <small>Bootstrap Visual Test</small></h1>
       $(function () {
         if (typeof document.body.attachShadow === 'function') {
           var shadowRoot = $('#shadow')[0].attachShadow({ mode: 'open' })
-          shadowRoot.innerHTML = [
-            '<button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="top" title="Tooltip on top in a shadow dom">',
-              'Tooltip on top in a shadow dom',
-            '</button>',
-            '<button id="secondTooltip" type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="top" title="Tooltip on top in a shadow dom with container option">',
-              'Tooltip on top in a shadow dom',
+          shadowRoot.innerHTML =
+            '<button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="top" title="Tooltip on top in a shadow dom">' +
+            '  Tooltip on top in a shadow dom' +
+            '</button>' +
+            '<button id="secondTooltip" type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="top" title="Tooltip on top in a shadow dom with container option">' +
+            '  Tooltip on top in a shadow dom' +
             '</button>'
-          ].join('')
+
           $(shadowRoot.firstChild).tooltip()
           $(shadowRoot.getElementById('secondTooltip')).tooltip({
             container: shadowRoot