Update tests to better match rejecting a fetch

src/index.ts

@@ -15,7 +15,13 @@ const sortable = [
 export default async function randomBunny(subreddit: string, sortBy: string = 'hot'): Promise<IReturnResult> {
     if (!sortable.includes(sortBy)) sortBy = 'hot';
 
-    const result = await fetch(`https://reddit.com/r/${subreddit}/${sortBy}.json`);
+    const result = await fetch(`https://reddit.com/r/${subreddit}/${sortBy}.json`)
+        .then((res) => {
+            return res;
+        })
+        .catch(() => {
+            return null;
+        });
 
     if (!result) {
         return {

tests/index.test.ts

@@ -1,7 +1,7 @@
 import { ErrorCode } from "../src/constants/ErrorCode";
 import ErrorMessages from "../src/constants/ErrorMessages";
 import randomBunny from "../src/index";
-import fetch from "got-cjs";
+import fetch, { CancelableRequest } from "got-cjs";
 
 jest.mock('got-cjs');
 const fetchMock = jest.mocked(fetch);
@@ -104,7 +104,7 @@ describe('randomBunny', () => {
     });
 
     test('GIVEN the fetch fails, EXPECT failure result', async () => {
-        fetchMock.mockResolvedValue(null);
+        fetchMock.mockRejectedValue('Test Reason')
 
         const result = await randomBunny('rabbits', 'new');