first nose-based test
tests for resetQuery and setMethod. refs #14
moved initialization to setUp method
cleaner code
tests for setFormat. refs #14
tests for addParameter and clearParameter. refs #14
basic test of query-type detectod
cleaner mocking
set default fake urlopen before each test
test of good request
pep8
test error-handling
verify that conversion is requested
test that setCredentials enables Authorization header
test that QueryResult proxies calls to given response-object
better test for SPARQLWrapper constructor
extracted parameter parser
check parameters via public API
use method for getting to request
marking QueryResult.setJSONModule as static