test: add test coverage to the set up middleware

src/middlewares/copyToRequestObject.test.js

@@ -0,0 +1,14 @@
+// @flow
+
+const copyToRequestObject = require('./copyToRequestObject');
+
+describe('The set up process', () => {
+  test('It can copy variables', () => {
+    expect.assertions(2);
+    const req = {};
+    const next = jest.fn();
+    copyToRequestObject({ foo: 'bar' })(req, null, next);
+    expect(req.foo).toBe('bar');
+    expect(next).toHaveBeenCalled();
+  });
+});

src/routes/healthcheck.test.js

@@ -4,6 +4,7 @@ const healthcheck = require('./healthcheck');
 
 describe('The healthcheck route', () => {
   test('It responds', () => {
+    expect.assertions(2);
     const res = {
       set: jest.fn(),
       json: jest.fn(),