[views] csvexport accept an empty rset (closes #4236928)
When you tried to apply the 'csvexport' view on an empty rset, the view
couldn't be selected and you got a HTTP 500 error.
Also add two new test cases.
from cubicweb.devtools.qunit import QUnitTestCase, unittest_main
from os import path as osp
class JScript(QUnitTestCase):
all_js_tests = (
("jstests/test_utils.js", (
"../../web/data/cubicweb.js",
"../../web/data/cubicweb.compat.js",
"../../web/data/cubicweb.python.js",
"jstests/utils.js",
),
),
("jstests/test_htmlhelpers.js", (
"../../web/data/cubicweb.js",
"../../web/data/cubicweb.compat.js",
"../../web/data/cubicweb.python.js",
"../../web/data/cubicweb.htmlhelpers.js",
),
),
("jstests/test_ajax.js", (
"../../web/data/cubicweb.python.js",
"../../web/data/cubicweb.js",
"../../web/data/cubicweb.compat.js",
"../../web/data/cubicweb.htmlhelpers.js",
"../../web/data/cubicweb.ajax.js",
), (
"jstests/ajax_url0.html",
"jstests/ajax_url1.html",
"jstests/ajax_url2.html",
"jstests/ajaxresult.json",
),
),
)
if __name__ == '__main__':
unittest_main()