added solution to challenge # 30 (pybites#86)

Author: mjhea0

30/mjhea0/README.md

@@ -0,0 +1,101 @@
+# PyBites Code Challenge 28 - The Art of Refactoring: Improve Your Code
+
+For this challenge I decided to refactor a Flask route handler because of this [issue](https://github.com/realpython/flask-jwt-auth/issues/9) that was added to the [Flask JWT Auth](https://github.com/realpython/flask-jwt-auth) project. Since this project is the example app built for the [Token-Based Authentication With Flask](https://realpython.com/blog/python/token-based-authentication-with-flask/) blog post, I had to update the blog post as well.
+
+## Issue
+
+Review the actual submitted [issue](https://github.com/realpython/flask-jwt-auth/issues/9) from GitHub for full details.
+
+Essentially, the following code only handles situations where the `Authorization` header has a space between `Bearer` and the actual token:
+
+```
+Bearer TOKEN_VALUE
+```
+
+Code:
+
+```python
+def get(self):
+    # get the auth token
+    auth_header = request.headers.get('Authorization')
+    if auth_header:
+        auth_token = auth_header.split(" ")[1]
+    else:
+        auth_token = ''
+    if auth_token:
+        resp = User.decode_auth_token(auth_token)
+```
+
+Even though the correct format for authorization is `Bearer TOKEN_VALUE`, it's best to handle situations where an end-user does not correctly format the auth header.
+
+Test coverage before refactor:
+
+```sh
+Name                           Stmts   Miss Branch BrPart  Cover
+----------------------------------------------------------------
+project/__init__.py                0      0      0      0   100%
+project/server/__init__.py        11      0      0      0   100%
+project/server/auth/views.py      84     16     18      5    79%
+project/server/models.py          47      5      6      1    89%
+----------------------------------------------------------------
+TOTAL                            142     21     24      6    84%
+```
+
+## Refactor
+
+You can view the full refactor [here](https://github.com/realpython/flask-jwt-auth/pull/10).
+
+Test:
+
+```python
+def test_user_status_malformed_bearer_token(self):
+    """ Test for user status with malformed bearer token"""
+    with self.client:
+        resp_register = register_user(self, '[email protected]', '123456')
+        response = self.client.get(
+            '/auth/status',
+            headers=dict(
+                Authorization='Bearer' + json.loads(
+                    resp_register.data.decode()
+                )['auth_token']
+            )
+        )
+        data = json.loads(response.data.decode())
+        self.assertTrue(data['status'] == 'fail')
+        self.assertTrue(data['message'] == 'Bearer token malformed.')
+        self.assertEqual(response.status_code, 401)
+```
+
+Code:
+
+```python
+def get(self):
+    # get the auth token
+    auth_header = request.headers.get('Authorization')
+    if auth_header:
+        try:
+            auth_token = auth_header.split(" ")[1]
+        except IndexError:
+            responseObject = {
+                'status': 'fail',
+                'message': 'Bearer token malformed.'
+            }
+            return make_response(jsonify(responseObject)), 401
+    else:
+        auth_token = ''
+    if auth_token:
+        resp = User.decode_auth_token(auth_token)
+```
+
+Test coverage after refactor:
+
+```sh
+Name                           Stmts   Miss Branch BrPart  Cover
+----------------------------------------------------------------
+project/__init__.py                0      0      0      0   100%
+project/server/__init__.py        11      0      0      0   100%
+project/server/auth/views.py      88     16     18      5    80%
+project/server/models.py          47      5      6      1    89%
+----------------------------------------------------------------
+TOTAL                            146     21     24      6    84%
+```