fix: add donation ga and tests (#38003)

* fix: add donation ga

* feat: add ga-saga tests

client/src/redux/ga-saga.test.js

@@ -0,0 +1,28 @@
+import { types } from '.';
+import { createGaSaga } from './ga-saga';
+import ga from '../analytics';
+import { expectSaga } from 'redux-saga-test-plan';
+
+describe('ga-saga', () => {
+  it('calls GA after executeGA action', () => {
+    const GaTypes = { event: ga.event, page: ga.pageview, modal: ga.modalview };
+    const mockEventPayload = {
+      type: 'event',
+      data: {
+        category: 'donation',
+        action: 'year end gift paypal button click'
+      }
+    };
+    return (
+      expectSaga(createGaSaga, types)
+        // Assert that the `call` with expected pramater will eventually happen.
+        .call(GaTypes.event, mockEventPayload.data)
+
+        // Dispatch any actions that the saga will `take`.
+        .dispatch({ type: types.executeGA, payload: mockEventPayload })
+
+        // Start the test.
+        .run()
+    );
+  });
+});