assert_response :success, "cannot get first changeset"
assert_select "osm[version='#{API_VERSION}'][generator='OpenStreetMap server']", 1
assert_select "osm>changeset[id='#{changeset_id}']", 1
assert_select "osm>changeset>discussion", 0
assert_response :success, "cannot get first changeset"
assert_select "osm[version='#{API_VERSION}'][generator='OpenStreetMap server']", 1
assert_select "osm>changeset[id='#{changeset_id}']", 1
assert_select "osm>changeset>discussion", 0