Tests require demo and sample servers to be running in order to pass.

[JivanAmara]

test_wfs & test_arcgisjson are failing regularly in pull requests not due to changes in code but because the servers they contact aren't available. I propose mocking the web requests so test results are determined only by the state of the code.

[JivanAmara]

test_wfs is hitting http://demo.boundlessgeo.com/geoserver/wfs and getting a 503.
test_arggisjson is hitting http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Hydrography/Watershed173811/FeatureServer/0/query?where=objectid+%3D+objectid&outfields=*&f=json and getting a .Net HttpException (0x80004005): There is not enough space on the disk.

[JivanAmara]

Will wait until these are up to serialize their responses for use in tests.

[jj0hns0n]

Lets use a geosolutions server for geoserver.

http://demo.geo-solutions.it/geoserver/web/wicket/bookmarkable/org.geoserver.web.demo.MapPreviewPage?1

[jj0hns0n]

Looks like we can use another Esri server too Looks like we can switch to another server https://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer/3 @bitner can you help out here.

[JivanAmara]

These servers have been swapped in to replace the ones that have been often down to move things along quickly: #71 .
@bitner and I both think mocking those responses is a good idea so I'm leaving this ticket open as a placeholder for doing that in the future.