1 files changed, 42 insertions, 4 deletions
diff --git a/js/tests/unit/collapse.spec.js b/js/tests/unit/collapse.spec.js
index d53ab5964..bc7c15771 100644
--- a/js/tests/unit/collapse.spec.js
+++ b/js/tests/unit/collapse.spec.js
@@ -27,7 +27,24 @@ describe('Collapse', () => {
     })
   })
 
+  describe('DATA_KEY', () => {
+    it('should return plugin data key', () => {
+      expect(Collapse.DATA_KEY).toEqual('bs.collapse')
+    })
+  })
+
   describe('constructor', () => {
+    it('should take care of element either passed as a CSS selector or DOM element', () => {
+      fixtureEl.innerHTML = '<div class="my-collapse"></div>'
+
+      const collapseEl = fixtureEl.querySelector('div.my-collapse')
+      const collapseBySelector = new Collapse('div.my-collapse')
+      const collapseByElement = new Collapse(collapseEl)
+
+      expect(collapseBySelector._element).toEqual(collapseEl)
+      expect(collapseByElement._element).toEqual(collapseEl)
+    })
+
     it('should allow jquery object in parent config', () => {
       fixtureEl.innerHTML = [
         '<div class="my-collapse">',
@@ -374,6 +391,29 @@ describe('Collapse', () => {
   })
 
   describe('data-api', () => {
+    it('should prevent url change if click on nested elements', done => {
+      fixtureEl.innerHTML = [
+        '<a role="button" data-bs-toggle="collapse" class="collapsed" href="#collapse">',
+        '  <span id="nested"></span>',
+        '</a>',
+        '<div id="collapse" class="collapse"></div>'
+      ].join('')
+
+      const triggerEl = fixtureEl.querySelector('a')
+      const nestedTriggerEl = fixtureEl.querySelector('#nested')
+
+      spyOn(Event.prototype, 'preventDefault').and.callThrough()
+
+      triggerEl.addEventListener('click', event => {
+        expect(event.target.isEqualNode(nestedTriggerEl)).toEqual(true)
+        expect(event.delegateTarget.isEqualNode(triggerEl)).toEqual(true)
+        expect(Event.prototype.preventDefault).toHaveBeenCalled()
+        done()
+      })
+
+      nestedTriggerEl.click()
+    })
+
     it('should show multiple collapsed elements', done => {
       fixtureEl.innerHTML = [
         '<a role="button" data-bs-toggle="collapse" class="collapsed" href=".multi"></a>',
@@ -796,11 +836,9 @@ describe('Collapse', () => {
       jQueryMock.fn.collapse = Collapse.jQueryInterface
       jQueryMock.elements = [div]
 
-      try {
+      expect(() => {
         jQueryMock.fn.collapse.call(jQueryMock, action)
-      } catch (error) {
-        expect(error.message).toEqual(`No method named "${action}"`)
-      }
+      }).toThrowError(TypeError, `No method named "${action}"`)
     })
   })