def test_set_limits(self):
# subsequence with xpath
xq = Xquery(xpath='/el')
xq.xq_var = '$n'
xq.set_limits(low=0, high=4)
self.assertEqual('subsequence(/el, 1, 4)', xq.getQuery())
# subsequence with FLWR query
xq.return_only({'name': 'name'})
self.assert_('subsequence(for $n in' in xq.getQuery())
# additive limits
xq = Xquery(xpath='/el')
xq.set_limits(low=2, high=10)
xq.set_limits(low=1, high=5)
self.assertEqual('subsequence(/el, 4, 4)', xq.getQuery())
# no high specified
xq = Xquery(xpath='/el')
xq.set_limits(low=10)
self.assertEqual('subsequence(/el, 11, )', xq.getQuery())
# no low
xq = Xquery(xpath='/el')
xq.set_limits(high=15)
self.assertEqual('subsequence(/el, 1, 15)', xq.getQuery())
def test_namespaces(self):
xq = Xquery(xpath='/foo:el', namespaces={'foo': 'urn:foo#'})
ns_declaration = '''declare namespace foo='urn:foo#';'''
# xpath-only xquery should have namespace declaration
self.assert_(ns_declaration in xq.getQuery())
# full FLOWR xquery should also have declaration
xq.return_only({'id': '@id'})
self.assert_(ns_declaration in xq.getQuery())
def test_return_only(self):
xq = Xquery(xpath='/el')
xq.xq_var = '$n'
xq.return_only({'myid': '@id', 'some_name': 'name',
'first_letter': 'substring(@n,1,1)'})
xq_return = xq._constructReturn()
self.assert_('return <el>' in xq_return)
self.assert_('<field>{$n/@id}</field>' in xq_return)
self.assert_('<field>{$n/name}</field>' in xq_return)
self.assert_('<field>{substring($n/@n,1,1)}</field>' in xq_return)
self.assert_('</el>' in xq_return)
xq = Xquery(xpath='/some/el/notroot')
xq.return_only({'id': '@id'})
self.assert_('return <notroot>' in xq._constructReturn())
# case where node test can't be the return element
xq = Xquery(xpath='/foo/bar/node()')
xq.return_only({'myid': '@id'})
xq_return = xq._constructReturn()
self.assert_('return <node>' in xq_return)
xq = Xquery(xpath='/foo/bar/*')
xq.return_only({'myid': '@id'})
xq_return = xq._constructReturn()
self.assert_('return <node>' in xq_return)
def test_return_only__fulltext_score(self):
xq = Xquery(xpath='/el')
xq.xq_var = '$n'
xq.return_only({'fulltext_score': ''})
self.assert_('let $fulltext_score := ft:score($n)' in xq.getQuery())
self.assert_('<fulltext_score>{$fulltext_score}</fulltext_score>' in xq._constructReturn())