Increased code coverage of src/components/UserPortal/EventCard/EventC…

…ard.tsx (#3267)

* increased code coverage of src/components/UserPortal/EventCard/EventCard.tsx

* resolved coderabbit conversation

* resolved coderabbit conversation

src/components/UserPortal/EventCard/EventCard.spec.tsx

@@ -2,7 +2,7 @@ import React from 'react';
 import { MockedProvider } from '@apollo/react-testing';
 import { I18nextProvider } from 'react-i18next';
 import { BrowserRouter } from 'react-router-dom';
-import { ToastContainer } from 'react-toastify';
+import { toast, ToastContainer } from 'react-toastify';
 import i18nForTest from 'utils/i18nForTest';
 import EventCard from './EventCard';
 import { render, screen, waitFor } from '@testing-library/react';
@@ -12,6 +12,7 @@ import { store } from 'state/store';
 import { StaticMockLink } from 'utils/StaticMockLink';
 import userEvent from '@testing-library/user-event';
 import useLocalStorage from 'utils/useLocalstorage';
+import { vi } from 'vitest';
 
 const { setItem } = useLocalStorage();
 
@@ -143,6 +144,42 @@ describe('Testing Event Card In User portal', () => {
       ).toBeInTheDocument(),
     );
   });
+
+  it('should display an error toast when the register mutation fails', async () => {
+    const toastErrorSpy = vi.spyOn(toast, 'error');
+    const errorMocks = [
+      {
+        request: {
+          query: REGISTER_EVENT,
+          variables: { eventId: '123' },
+        },
+        error: new Error('Failed to register for the event'),
+      },
+    ];
+
+    const errorLink = new StaticMockLink(errorMocks, true);
+
+    render(
+      <MockedProvider addTypename={false} link={errorLink}>
+        <BrowserRouter>
+          <Provider store={store}>
+            <I18nextProvider i18n={i18nForTest}>
+              <ToastContainer />
+              <EventCard {...props} />
+            </I18nextProvider>
+          </Provider>
+        </BrowserRouter>
+      </MockedProvider>,
+    );
+
+    userEvent.click(screen.getByText('Register'));
+
+    await waitFor(() => {
+      expect(toastErrorSpy).toHaveBeenCalledWith(
+        `Failed to register for the event`,
+      );
+    });
+  });
 });
 
 describe('Event card when start and end time are not given', () => {

src/components/UserPortal/EventCard/EventCard.tsx

@@ -96,13 +96,12 @@ function eventCard(props: InterfaceEventCardProps): JSX.Element {
             eventId: props.id,
           },
         });
-        /* istanbul ignore next */
         if (data) {
           setIsRegistered(true);
           toast.success(`Successfully registered for ${props.title}`);
         }
-      } catch (error: unknown) {
-        /* istanbul ignore next */
+      } catch (error) {
+        toast.error(`Failed to register for the event`);
         toast.error(error as string);
       }
     }