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# Tests for xml.dom.minicompat
import pickle
import unittest
import xml.dom
from xml.dom.minicompat import *
class EmptyNodeListTestCase(unittest.TestCase):
"""Tests for the EmptyNodeList class."""
def test_emptynodelist_item(self):
# Test item access on an EmptyNodeList.
node_list = EmptyNodeList()
self.assertIsNone(node_list.item(0))
self.assertIsNone(node_list.item(-1)) # invalid item
with self.assertRaises(IndexError):
node_list[0]
with self.assertRaises(IndexError):
node_list[-1]
def test_emptynodelist_length(self):
node_list = EmptyNodeList()
# Reading
self.assertEqual(node_list.length, 0)
# Writing
with self.assertRaises(xml.dom.NoModificationAllowedErr):
node_list.length = 111
def test_emptynodelist___add__(self):
node_list = EmptyNodeList() + NodeList()
self.assertEqual(node_list, NodeList())
def test_emptynodelist___radd__(self):
node_list = [1,2] + EmptyNodeList()
self.assertEqual(node_list, [1,2])
class NodeListTestCase(unittest.TestCase):
"""Tests for the NodeList class."""
def test_nodelist_item(self):
# Test items access on a NodeList.
# First, use an empty NodeList.
node_list = NodeList()
self.assertIsNone(node_list.item(0))
self.assertIsNone(node_list.item(-1))
with self.assertRaises(IndexError):
node_list[0]
with self.assertRaises(IndexError):
node_list[-1]
# Now, use a NodeList with items.
node_list.append(111)
node_list.append(999)
self.assertEqual(node_list.item(0), 111)
self.assertIsNone(node_list.item(-1)) # invalid item
self.assertEqual(node_list[0], 111)
self.assertEqual(node_list[-1], 999)
def test_nodelist_length(self):
node_list = NodeList([1, 2])
# Reading
self.assertEqual(node_list.length, 2)
# Writing
with self.assertRaises(xml.dom.NoModificationAllowedErr):
node_list.length = 111
def test_nodelist___add__(self):
node_list = NodeList([3, 4]) + [1, 2]
self.assertEqual(node_list, NodeList([3, 4, 1, 2]))
def test_nodelist___radd__(self):
node_list = [1, 2] + NodeList([3, 4])
self.assertEqual(node_list, NodeList([1, 2, 3, 4]))
def test_nodelist_pickle_roundtrip(self):
# Test pickling and unpickling of a NodeList.
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
# Empty NodeList.
node_list = NodeList()
pickled = pickle.dumps(node_list, proto)
unpickled = pickle.loads(pickled)
self.assertEqual(unpickled, node_list)
# Non-empty NodeList.
node_list.append(1)
node_list.append(2)
pickled = pickle.dumps(node_list, proto)
unpickled = pickle.loads(pickled)
self.assertEqual(unpickled, node_list)
if __name__ == '__main__':
unittest.main()
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