invalid mimetype

[cehbrecht]

Description

When sending a request with a compex output the pywps services may fail:

File "/usr/local/anaconda/envs/rook/lib/python3.7/site-packages/pywps/app/Process.py", line 478, in setup_outputs_from_wps_request
    'MimeType ' + mimetype + ' not valid')
TypeError: can only concatenate str (not "NoneType") to str

The default mimetype has changed from empty string '' to None in pywps 4.5.0 which lets to this error:

https://github.com/geopython/pywps/blob/20147561c6985525c26b31ee9eac86192487b07e/pywps/app/WPSRequest.py#L525

Environment

• operating system:
• Python version:
• PyWPS version: 4.5.0
• source/distribution
  • [ ] git clone
  • [ ] Debian
  • [ ] PyPI
  • [ ] zip/tar.gz
  • [ ] other (please specify):
• web server
  • [ ] Apache/mod_wsgi
  • [ ] CGI
  • [ ] other (please specify):

Steps to Reproduce

Run the Emu inout process with a post request (or using birdy):

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<wps:Execute service="WPS" version="1.0.0" xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wps/1.0.0
../wpsExecute_request.xsd">
    <ows:Identifier>inout</ows:Identifier>
    <wps:ResponseForm>
        <wps:ResponseDocument storeExecuteResponse="true" status="true">
            <wps:Output asReference="true">
                <ows:Identifier>output</ows:Identifier>
            </wps:Output>
        </wps:ResponseDocument>
    </wps:ResponseForm>
</wps:Execute>

Additional Information

[cehbrecht]

fixed by PR #620