Add `getOrCreateInstance` method in base-component (#33276)

Co-authored-by: Rohit Sharma <rohit2sharma95@gmail.com>
Co-authored-by: XhmikosR <xhmikosr@gmail.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/js/tests/unit/alert.spec.js b/js/tests/unit/alert.spec.js
index 29b99d7921..53dc0700c9 100644
--- a/js/tests/unit/alert.spec.js
+++ b/js/tests/unit/alert.spec.js
@@ -207,4 +207,26 @@ describe('Alert', () => {
       expect(Alert.getInstance(div)).toEqual(null)
     })
   })
+
+  describe('getOrCreateInstance', () => {
+    it('should return alert instance', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+      const alert = new Alert(div)
+
+      expect(Alert.getOrCreateInstance(div)).toEqual(alert)
+      expect(Alert.getInstance(div)).toEqual(Alert.getOrCreateInstance(div, {}))
+      expect(Alert.getOrCreateInstance(div)).toBeInstanceOf(Alert)
+    })
+
+    it('should return new instance when there is no alert instance', () => {
+      fixtureEl.innerHTML = '<div></div>'
+
+      const div = fixtureEl.querySelector('div')
+
+      expect(Alert.getInstance(div)).toEqual(null)
+      expect(Alert.getOrCreateInstance(div)).toBeInstanceOf(Alert)
+    })
+  })
 })