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393ddc10a7
While Node class has a useful `__str__`, its `__repr__` is not that useful. Added a `__repr__` that makes use of the current `__str__`. This is especially useful since the more popular `Q` class inherits `tree.Node`. Also created new tests that cover most of `Node` class functionality.
58 lines
1.9 KiB
Python
58 lines
1.9 KiB
Python
import copy
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import unittest
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from django.utils.tree import Node
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class NodeTests(unittest.TestCase):
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def setUp(self):
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self.node1_children = [('a', 1), ('b', 2)]
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self.node1 = Node(self.node1_children)
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self.node2 = Node()
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def test_str(self):
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self.assertEqual(str(self.node1), "(DEFAULT: ('a', 1), ('b', 2))")
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self.assertEqual(str(self.node2), "(DEFAULT: )")
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def test_repr(self):
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self.assertEqual(repr(self.node1),
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"<Node: (DEFAULT: ('a', 1), ('b', 2))>")
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self.assertEqual(repr(self.node2), "<Node: (DEFAULT: )>")
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def test_len(self):
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self.assertEqual(len(self.node1), 2)
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self.assertEqual(len(self.node2), 0)
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def test_bool(self):
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self.assertTrue(self.node1)
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self.assertFalse(self.node2)
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def test_contains(self):
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self.assertIn(('a', 1), self.node1)
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self.assertNotIn(('a', 1), self.node2)
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def test_add(self):
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# start with the same children of node1 then add an item
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node3 = Node(self.node1_children)
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node3_added_child = ('c', 3)
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# add() returns the added data
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self.assertEqual(node3.add(node3_added_child, Node.default),
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node3_added_child)
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# we added exactly one item, len() should reflect that
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self.assertEqual(len(self.node1) + 1, len(node3))
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self.assertEqual(str(node3), "(DEFAULT: ('a', 1), ('b', 2), ('c', 3))")
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def test_negate(self):
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# negated is False by default
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self.assertFalse(self.node1.negated)
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self.node1.negate()
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self.assertTrue(self.node1.negated)
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self.node1.negate()
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self.assertFalse(self.node1.negated)
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def test_deepcopy(self):
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node4 = copy.copy(self.node1)
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node5 = copy.deepcopy(self.node1)
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self.assertIs(self.node1.children, node4.children)
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self.assertIsNot(self.node1.children, node5.children)
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