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import copy
import unittest
from django.utils.tree import Node
class NodeTests(unittest.TestCase):
def setUp(self):
self.node1_children = [('a', 1), ('b', 2)]
self.node1 = Node(self.node1_children)
self.node2 = Node()
def test_str(self):
self.assertEqual(str(self.node1), "(DEFAULT: ('a', 1), ('b', 2))")
self.assertEqual(str(self.node2), "(DEFAULT: )")
def test_repr(self):
self.assertEqual(repr(self.node1),
"<Node: (DEFAULT: ('a', 1), ('b', 2))>")
self.assertEqual(repr(self.node2), "<Node: (DEFAULT: )>")
def test_hash(self):
node3 = Node(self.node1_children, negated=True)
node4 = Node(self.node1_children, connector='OTHER')
node5 = Node(self.node1_children)
node6 = Node([['a', 1], ['b', 2]])
node7 = Node([('a', [1, 2])])
node8 = Node([('a', (1, 2))])
self.assertNotEqual(hash(self.node1), hash(self.node2))
self.assertNotEqual(hash(self.node1), hash(node3))
self.assertNotEqual(hash(self.node1), hash(node4))
self.assertEqual(hash(self.node1), hash(node5))
self.assertEqual(hash(self.node1), hash(node6))
self.assertEqual(hash(self.node2), hash(Node()))
self.assertEqual(hash(node7), hash(node8))
def test_len(self):
self.assertEqual(len(self.node1), 2)
self.assertEqual(len(self.node2), 0)
def test_bool(self):
self.assertTrue(self.node1)
self.assertFalse(self.node2)
def test_contains(self):
self.assertIn(('a', 1), self.node1)
self.assertNotIn(('a', 1), self.node2)
def test_add(self):
# start with the same children of node1 then add an item
node3 = Node(self.node1_children)
node3_added_child = ('c', 3)
# add() returns the added data
self.assertEqual(node3.add(node3_added_child, Node.default),
node3_added_child)
# we added exactly one item, len() should reflect that
self.assertEqual(len(self.node1) + 1, len(node3))
self.assertEqual(str(node3), "(DEFAULT: ('a', 1), ('b', 2), ('c', 3))")
def test_add_eq_child_mixed_connector(self):
node = Node(['a', 'b'], 'OR')
self.assertEqual(node.add('a', 'AND'), 'a')
self.assertEqual(node, Node([Node(['a', 'b'], 'OR'), 'a'], 'AND'))
def test_negate(self):
# negated is False by default
self.assertFalse(self.node1.negated)
self.node1.negate()
self.assertTrue(self.node1.negated)
self.node1.negate()
self.assertFalse(self.node1.negated)
def test_deepcopy(self):
node4 = copy.copy(self.node1)
node5 = copy.deepcopy(self.node1)
self.assertIs(self.node1.children, node4.children)
self.assertIsNot(self.node1.children, node5.children)
def test_eq_children(self):
node = Node(self.node1_children)
self.assertEqual(node, self.node1)
self.assertNotEqual(node, self.node2)
def test_eq_connector(self):
new_node = Node(connector='NEW')
default_node = Node(connector='DEFAULT')
self.assertEqual(default_node, self.node2)
self.assertNotEqual(default_node, new_node)
def test_eq_negated(self):
node = Node(negated=False)
negated = Node(negated=True)
self.assertNotEqual(negated, node)
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