UNITTESTS.md

Adding the unit tests

For adding in the unit tests we'll make use of the Python unittest library.

Step 1 - Create test files

We'll create all our tests in a tests directory

mkdir tests

Create a new directory called tests and within there place two files called __init__.py and test_getbooks.py

The __init__.py file can be left blank.

Step 2 - Write a few unit tests

Create a few Python unit tests. Within the test_getbooks.py file, pop in the following contents:

import unittest

from api import app

class GetBooksTest(unittest.TestCase):

    def setUp(self):
        self.app = app.test_client()

    def test_successful_getbooks(self):

        response = self.app.get('/books', headers={"Content-Type": "application/json"})
        self.assertEqual(200, response.status_code)

    def test_successful_getbookssize(self):

        response = self.app.get('/books', headers={"Content-Type": "application/json"})
        self.assertEqual(3, len(response.json['books']))

Note You might need to tweak the test if your API returns more than 3 books 🙌

You can see a full version of this setup in this repository here

Thats the unit tests ready to go, now head back to the README and move on to Step 2 - CircleCI setup