✅ Added event subscriber test.

Author: geekhybrid

src/businessLogic/eventHub/explorerEventPublisher.spec.ts

@@ -0,0 +1,25 @@
+import { TreeViewItem } from "../contracts/types";
+import { eventHub, eventManager } from "./explorerEventPublisher";
+
+const itemCheckeckedCallBack = (items: TreeViewItem[]) => {};
+
+const callBacks = {
+    itemCheckeckedCallBack,
+}
+
+
+describe("eventPublisher", () => {
+    it("should notify subscribers of all items checked of a type", () => {
+        const expectedCheckedItem: TreeViewItem = {
+            id: '1',
+            name: 'Test',
+            type: '.doc',
+        };
+        const subscriberCallBack = jest.spyOn(callBacks, "itemCheckeckedCallBack");
+
+        eventManager.subscribeToItemChecked('.doc', callBacks.itemCheckeckedCallBack);
+        eventHub.onItemChecked(expectedCheckedItem)
+
+        expect(subscriberCallBack).toBeCalledWith([expectedCheckedItem]);
+    });
+});