diff --git a/js/tests/unit/carousel.spec.js b/js/tests/unit/carousel.spec.js
index 66f4a8367b..ce9cd0fbcd 100644
--- a/js/tests/unit/carousel.spec.js
+++ b/js/tests/unit/carousel.spec.js
@@ -1430,7 +1430,7 @@ describe('Carousel', () => {
         '    <div class="carousel-item">item 3</div>',
         '  </div>',
         '  <button class="carousel-control-prev" data-bs-target="#myCarousel" type="button" data-bs-slide="prev"></button>',
-        '  <button id="next" class="carousel-control-next" data-bs-target="#myCarousel" type="button" data-bs-slide="next"></div>',
+        '  <button id="next" class="carousel-control-next" data-bs-target="#myCarousel" type="button" data-bs-slide="next"></button>',
         '</div>'
       ].join('')
 
@@ -1453,8 +1453,8 @@ describe('Carousel', () => {
         '    <div id="item2" class="carousel-item">item 2</div>',
         '    <div class="carousel-item">item 3</div>',
         '  </div>',
-        '  <a class="carousel-control-prev" href="#myCarousel" role="button" data-bs-slide="prev"></button>',
-        '  <a id="next" class="carousel-control-next" href="#myCarousel" role="button" data-bs-slide="next"></div>',
+        '  <a class="carousel-control-prev" href="#myCarousel" role="button" data-bs-slide="prev"></a>',
+        '  <a id="next" class="carousel-control-next" href="#myCarousel" role="button" data-bs-slide="next"></a>',
         '</div>'
       ].join('')
 
@@ -1520,8 +1520,8 @@ describe('Carousel', () => {
         '    <div id="item2" class="carousel-item">item 2</div>',
         '    <div class="carousel-item">item 3</div>',
         '  </div>',
-        '  <button class="carousel-control-prev" data-bs-target="#myCarousel" type="button" data-bs-slide="prev"></div>',
-        '  <button id="next" class="carousel-control-next" data-bs-target="#myCarousel" type="button" data-bs-slide="next"></div>',
+        '  <button class="carousel-control-prev" data-bs-target="#myCarousel" type="button" data-bs-slide="prev"></button>',
+        '  <button id="next" class="carousel-control-next" data-bs-target="#myCarousel" type="button" data-bs-slide="next"></button>',
         '</div>'
       ].join('')
 
diff --git a/js/tests/unit/collapse.spec.js b/js/tests/unit/collapse.spec.js
index a7635006fe..327a68449b 100644
--- a/js/tests/unit/collapse.spec.js
+++ b/js/tests/unit/collapse.spec.js
@@ -276,18 +276,18 @@ describe('Collapse', () => {
         '      <div id="childGroup" class="accordion">',
         '        <div class="accordion-item">',
         '          <div id="childHeader1" class="accordion-header">',
-        '           <button data-bs-target="#childContent1" data-bs-toggle="collapse" role="button" class="accordion-toggle">Child 1</button>',
+        '            <button data-bs-target="#childContent1" data-bs-toggle="collapse" role="button" class="accordion-toggle">Child 1</button>',
         '          </div>',
         '          <div id="childContent1" class="accordion-collapse collapse" aria-labelledby="childHeader1" data-bs-parent="#childGroup">',
-        '           <div>content</div>',
+        '            <div>content</div>',
         '          </div>',
         '        </div>',
         '        <div class="accordion-item">',
         '          <div id="childHeader2" class="accordion-header">',
-        '           <button data-bs-target="#childContent2" data-bs-toggle="collapse" role="button" class="accordion-toggle">Child 2</button>',
+        '            <button data-bs-target="#childContent2" data-bs-toggle="collapse" role="button" class="accordion-toggle">Child 2</button>',
         '          </div>',
         '          <div id="childContent2" class="accordion-collapse collapse" aria-labelledby="childHeader2" data-bs-parent="#childGroup">',
-        '           <div>content</div>',
+        '            <div>content</div>',
         '          </div>',
         '        </div>',
         '      </div>',
diff --git a/js/tests/unit/dropdown.spec.js b/js/tests/unit/dropdown.spec.js
index aec70063ec..037a6a5a93 100644
--- a/js/tests/unit/dropdown.spec.js
+++ b/js/tests/unit/dropdown.spec.js
@@ -130,7 +130,7 @@ describe('Dropdown', () => {
     it('should allow to pass config to Popper with `popperConfig` as a function', () => {
       fixtureEl.innerHTML = [
         '<div class="dropdown">',
-        '  <button class="btn dropdown-toggle" data-bs-toggle="dropdown" data-bs-placement="right" >Dropdown</button>',
+        '  <button class="btn dropdown-toggle" data-bs-toggle="dropdown" data-bs-placement="right">Dropdown</button>',
         '  <div class="dropdown-menu">',
         '    <a class="dropdown-item" href="#">Secondary link</a>',
         '  </div>',
diff --git a/js/tests/unit/modal.spec.js b/js/tests/unit/modal.spec.js
index 5729942e57..84a95c86ad 100644
--- a/js/tests/unit/modal.spec.js
+++ b/js/tests/unit/modal.spec.js
@@ -277,8 +277,7 @@ describe('Modal', () => {
       fixtureEl.innerHTML = [
         '<button type="button" data-bs-dismiss="modal" data-bs-target="#modal1"></button>',
         '<div id="modal1" class="modal fade">',
-        '  <div class="modal-dialog">',
-        '  </div>',
+        '  <div class="modal-dialog"></div>',
         '</div>'
       ].join('')
 
@@ -303,8 +302,7 @@ describe('Modal', () => {
     it('should set .modal\'s scroll top to 0', done => {
       fixtureEl.innerHTML = [
         '<div class="modal fade">',
-        '  <div class="modal-dialog">',
-        '  </div>',
+        '  <div class="modal-dialog"></div>',
         '</div>'
       ].join('')
 
diff --git a/js/tests/unit/offcanvas.spec.js b/js/tests/unit/offcanvas.spec.js
index 191a9f8018..f4b0b64828 100644
--- a/js/tests/unit/offcanvas.spec.js
+++ b/js/tests/unit/offcanvas.spec.js
@@ -490,7 +490,7 @@ describe('Offcanvas', () => {
 
     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>',
+        '<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('')
@@ -512,7 +512,7 @@ describe('Offcanvas', () => {
 
     it('should focus on trigger element after closing offcanvas', done => {
       fixtureEl.innerHTML = [
-        '<button id="btn" data-bs-toggle="offcanvas" data-bs-target="#offcanvas" ></button>',
+        '<button id="btn" data-bs-toggle="offcanvas" data-bs-target="#offcanvas"></button>',
         '<div id="offcanvas" class="offcanvas"></div>'
       ].join('')
 
@@ -536,7 +536,7 @@ describe('Offcanvas', () => {
 
     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>',
+        '<button id="btn" data-bs-toggle="offcanvas" data-bs-target="#offcanvas"></button>',
         '<div id="offcanvas" class="offcanvas"></div>'
       ].join('')
 
diff --git a/js/tests/unit/tab.spec.js b/js/tests/unit/tab.spec.js
index 43d20438eb..bafa085526 100644
--- a/js/tests/unit/tab.spec.js
+++ b/js/tests/unit/tab.spec.js
@@ -114,7 +114,7 @@ describe('Tab', () => {
       fixtureEl.innerHTML = [
         '<nav class="nav">',
         '  <button type="button" data-bs-target="#home" role="tab">Home</button>',
-        '  <button type="button" id="triggerProfile" data-bs-target="#profile" role="tab">Profile</a>',
+        '  <button type="button" id="triggerProfile" data-bs-target="#profile" role="tab">Profile</button>',
         '</nav>',
         '<div>',
         '  <div id="home" role="tabpanel"></div>',
diff --git a/js/tests/unit/tooltip.spec.js b/js/tests/unit/tooltip.spec.js
index 57a3d68410..f92b74d963 100644
--- a/js/tests/unit/tooltip.spec.js
+++ b/js/tests/unit/tooltip.spec.js
@@ -1112,7 +1112,8 @@ describe('Tooltip', () => {
     it('should do nothing if the content is a child of the element', () => {
       fixtureEl.innerHTML = [
         '<a href="#" rel="tooltip" title="Another tooltip">',
-        '<div id="childContent"></div>'
+        '  <div id="childContent"></div>',
+        '</a>'
       ].join('')
 
       const tooltipEl = fixtureEl.querySelector('a')
@@ -1130,7 +1131,8 @@ describe('Tooltip', () => {
     it('should add the content as a child of the element for jQuery elements', () => {
       fixtureEl.innerHTML = [
         '<a href="#" rel="tooltip" title="Another tooltip">',
-        '<div id="childContent"></div>'
+        '  <div id="childContent"></div>',
+        '</a>'
       ].join('')
 
       const tooltipEl = fixtureEl.querySelector('a')
@@ -1147,7 +1149,8 @@ describe('Tooltip', () => {
     it('should add the child text content in the element', () => {
       fixtureEl.innerHTML = [
         '<a href="#" rel="tooltip" title="Another tooltip">',
-        '<div id="childContent">Tooltip</div>'
+        '  <div id="childContent">Tooltip</div>',
+        '</a>'
       ].join('')
 
       const tooltipEl = fixtureEl.querySelector('a')
@@ -1160,7 +1163,7 @@ describe('Tooltip', () => {
     })
 
     it('should add html without sanitize it', () => {
-      fixtureEl.innerHTML = '<a href="#" rel="tooltip" title="Another tooltip">'
+      fixtureEl.innerHTML = '<a href="#" rel="tooltip" title="Another tooltip"></a>'
 
       const tooltipEl = fixtureEl.querySelector('a')
       const tooltip = new Tooltip(tooltipEl, {
@@ -1174,7 +1177,7 @@ describe('Tooltip', () => {
     })
 
     it('should add html sanitized', () => {
-      fixtureEl.innerHTML = '<a href="#" rel="tooltip" title="Another tooltip">'
+      fixtureEl.innerHTML = '<a href="#" rel="tooltip" title="Another tooltip"></a>'
 
       const tooltipEl = fixtureEl.querySelector('a')
       const tooltip = new Tooltip(tooltipEl, {
@@ -1193,7 +1196,7 @@ describe('Tooltip', () => {
     })
 
     it('should add text content', () => {
-      fixtureEl.innerHTML = '<a href="#" rel="tooltip" title="Another tooltip">'
+      fixtureEl.innerHTML = '<a href="#" rel="tooltip" title="Another tooltip"></a>'
 
       const tooltipEl = fixtureEl.querySelector('a')
       const tooltip = new Tooltip(tooltipEl)
@@ -1206,7 +1209,7 @@ describe('Tooltip', () => {
 
   describe('_getTitle', () => {
     it('should return the title', () => {
-      fixtureEl.innerHTML = '<a href="#" rel="tooltip" title="Another tooltip">'
+      fixtureEl.innerHTML = '<a href="#" rel="tooltip" title="Another tooltip"></a>'
 
       const tooltipEl = fixtureEl.querySelector('a')
       const tooltip = new Tooltip(tooltipEl)