fix: test code

Author: himorishige

tests/lib/fetch.test.ts

@@ -1,15 +1,16 @@
 import { generateFetchClient } from '../../src/lib/fetch';
-import crossFetch from 'cross-fetch';
 
 describe('generateFetchClient', () => {
-  test('If no options is specified, cross-fetch is used', () => {
+  test('If no options is specified, cross-fetch is used', async () => {
     const client = generateFetchClient('apiKey');
-    expect(typeof client === typeof crossFetch).toBe(true);
+    const response = await client('http://example.com');
+    expect(response.status).toBe(200);
   });
 
-  test('If custom fetch is specified, custom fetch is used', () => {
-    const customFetch = () => Promise.resolve(new Response());
+  test('If custom fetch is specified, custom fetch is used', async () => {
+    const customFetch = jest.fn();
     const client = generateFetchClient('apiKey', customFetch);
-    expect(typeof client === typeof customFetch).toBe(true);
+    await client('http://example.com');
+    expect(customFetch).toHaveBeenCalled();
   });
 });

tests/mocks/handlers.ts

@@ -5,13 +5,14 @@ import { API_VERSION, BASE_DOMAIN } from '../../src/utils/constants';
 const baseUrl = `https://serviceDomain.${BASE_DOMAIN}/api/${API_VERSION}`;
 
 const hasValidApiKey = (req: RestRequest) => {
-  if (req.headers.get('X-MICROCMS-API-KEY') !== 'apiKey') {
-    return false;
-  }
-  return true;
+  return req.headers.get('X-MICROCMS-API-KEY') === 'apiKey';
 };
 
 export const handlers = [
+  rest.get('http://example.com', (req, res, ctx) => {
+    if (!hasValidApiKey(req)) return res(ctx.status(401));
+    return res(ctx.status(200));
+  }),
   rest.get(`${baseUrl}/list-type`, (req, res, ctx) => {
     if (!hasValidApiKey(req)) return res(ctx.status(401));