Location¶

When using the default configuration Fizzgun will create the report files in a ./reports directory (where . is the directory from which the fizzgun run command is executed). You can change this setting and also the report format as described in report configuration.

Alternatively you can access the reports by setting your browser's proxy settings to use Fizzgun's mitmproxy and navigating to http://fizzgun.it/reports/.

If Fizzgun is configured to track a session identifier on the requests it receives, the resulting filename will be [session-identifier].txt (or .html), otherwise the identifier global-session is used. (see the track_sesssions setting of the mitmproxy configuration).

Content¶

When the server response of a mutant request does not meet the expectations a report entry will be created containing:

• The name and description of the bubble that generated the request.
• A list of errors (the unmet expectations).
• The original HTTP request (from which the mutant was generated).
• The modified HTTP request (the mutant).
• The server's HTTP response.

Here's an example of a report entry:

Bubble: Enlarger
Description: Identifies parameters in requests and replaces them with larger values

Errors:
    * Expecting 'status' to be in ranges ['0-499'] (actual: 500)


    Original Request:
    -----------------

POST http://localhost:4567/item HTTP/1.1
Host: localhost:4567
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:56.0) Gecko/20100101 Firefox/56.0
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://localhost:4567/
Content-Type: application/json; charset=utf-8
X-Requested-With: XMLHttpRequest
Content-Length: 65
Cookie: ajs_user_id=null; ajs_group_id=null; ajs_anonymous_id=%220b51495d-00ef-47e1-afac-a9bb853bc282%22
Connection: keep-alive

{"name":"my-item","description":"the description","quantity":"1"}


    Modified Request:
    -----------------

POST http://localhost:4567/item HTTP/1.1
Host: localhost:4567
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:56.0) Gecko/20100101 Firefox/56.0
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://localhost:4567/
Content-Type: application/json; charset=utf-8
X-Requested-With: XMLHttpRequest
Content-Length: 65
Cookie: ajs_user_id=null; ajs_group_id=null; ajs_anonymous_id=%220b51495d-00ef-47e1-afac-a9bb853bc282%22
Connection: keep-alive

{"name": "my-item", "description": "the description", "quantity": "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"}


    Server Response:
    ----------------

500 INTERNAL SERVER ERROR
Content-Type: text/html; charset=utf-8
Content-Length: 942
Server: Werkzeug/0.12.2 Python/3.6.1
Date: Tue, 17 Oct 2017 22:45:02 GMT

Traceback (most recent call last):

  File "/usr/lib/python3.6/site-packages/flask/app.py", line 1982, in wsgi_app
    response = self.full_dispatch_request()

  File "/usr/lib/python3.6/site-packages/flask/app.py", line 1614, in full_dispatch_request
    rv = self.handle_user_exception(e)

  File "/usr/lib/python3.6/site-packages/flask/app.py", line 1517, in handle_user_exception
    reraise(exc_type, exc_value, tb)

  File "/usr/lib/python3.6/site-packages/flask/_compat.py", line 33, in reraise
    raise value

  File "/usr/lib/python3.6/site-packages/flask/app.py", line 1612, in full_dispatch_request
    rv = self.dispatch_request()

  File "/usr/lib/python3.6/site-packages/flask/app.py", line 1598, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)

  File "shop_app.py", line 59, in create_item
    (name, description, quantity))

OverflowError: Python int too large to convert to SQLite INTEGER