fix test

Author: marcorobol

app/booklendings.js

@@ -43,8 +43,9 @@ router.get('', async (req, res) => {
 
 
 router.post('', async (req, res) => {
-    let studentUrl = req.body.student;
-    let bookUrl = req.body.book;
+    const body = req.body || {};
+    let studentUrl = body.student;
+    let bookUrl = body.book;
 
     if (!studentUrl){
         res.status(400).json({ error: 'Student not specified' });

jest.config.js

@@ -164,6 +164,7 @@ module.exports = {
 
   // This option allows use of a custom test runner
   // testRunner: "jasmine2",
+  // testRunner: "jest-circus/runner",
 
   // This option sets the URL for the jsdom environment. It is reflected in properties such as location.href
   // testURL: "http://localhost",