cofiguration of testing suite

__tests__/check_jest_works.js

@@ -0,0 +1,14 @@
+// check that the npm environment has set the test DB correctly
+test('Jest should use the test DB', ()=> {
+  expect(process.env.DB_DATABASE).toBe('test_db');
+})
+
+// This test fails because 1 !== 2
+xit('Testing to see if Jest works', () => {
+    expect(1).toBe(2)
+  })
+
+// This passes because 1 === 1
+xit('Testing to see if Jest works 2', () => {
+    expect(1).toBe(1)
+  })

__tests__/userRoutes.js

@@ -0,0 +1,16 @@
+const request = require('supertest')
+const app = require('../app')
+
+describe('Post new user', () => {
+  it('should create a new user', async () => {
+    const res = await request(app.callback())
+      .post('/api/v1/users')
+      .send({
+        username: 'unique_11223',
+        password: 'password',
+        email: 'unique2_email@example.com'
+      })
+    expect(res.statusCode).toEqual(201)
+    expect(res.body).toHaveProperty('created', true)
+  })
+});

app.js

@@ -22,4 +22,4 @@ app.use(applications.routes());
 
 let port = process.env.PORT || 3000;
 
-app.listen(port);
+module.exports = app;