Flask and Werkzeug: Testing a post request with custom headers

flask, python, werkzeug

Solution

`open` also take `*args` and `**kwargs` which used as `EnvironBuilder` arguments. So you can add just `headers` argument to your first post request:

with self.app.test_client() as client:
    client.post('/v0/scenes/test/foo',
                data=dict(image=(StringIO('fake image'), 'image.png')),
                headers={'content-md5': 'some hash'});

Problem

I'm currently testing my app with suggestions from http://flask.pocoo.org/docs/testing/, but I would like to add a header to a post request. My request is currently: ``` self.app.post('/v0/scenes/test/foo', data=dict(image=(StringIO('fake image'), 'image.png'))) ``` but I would like to add a content-md5 to the request. Is this possible? My investigations: Flask Client (in flask/testing.py) extends Werkzeug's Client, documented here: http://werkzeug.pocoo.org/docs/test/ As you can see, `post` uses `open`. But `open` only has: ``` Parameters: as_tuple – Returns a tuple in the form (environ, result) buffered – Set this to True to buffer the application run. This will automatically close the application for you as well. follow_redirects – Set this to True if the Client should follow HTTP redirects. ``` So it looks like it's not supported. How might I get such a feature working, though?

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