def test_deepCopyInterDependancyPreservesLinks(self):
inputA = Node(1.0)
inputB = Node(2.0, [inputA])
inputA.children.append(inputB)
inputC = inputA.deep_copy()
inputC.value = 3.0
inputC.children[0].value = 4.0
# inputA and inputB have an interdependancy
self.assertIs(inputA, inputB.children[0])
self.assertIs(inputB, inputA.children[0])
# inputC is a new object, as it's child is a clone of inputB
self.assertIsNot(inputA, inputC)
self.assertIsNot(inputB, inputC.children[0])
self.assertIsNot(inputA.value, inputC.value)
self.assertIsNot(inputB.value, inputC.children[0].value)
# validate the values within inputA & B were copied over
self.assertEqual(3.0, inputC.value)
self.assertEqual(4.0, inputC.children[0].value)
self.assertNotEqual(inputA.value, inputC.value)
# it is sufficient to ensure the grandchild is the same object.
self.assertIs(
inputC,
inputC.children[0].children[0]) # inputC is it's own grandchild
self.assertIs(inputC.children[0],
inputC.children[0].children[0].children[0]
) # the child of inputC is it's own grandchild
def test_deepCopySimpleNote(self):
inputA = Node(1.0, [])
inputB = inputA.deep_copy()
inputA.value = 2.0
self.assertEqual(1.0, inputB.value)
self.assertEqual(2.0, inputA.value)
def test_deepCopypreservesListContents(self):
inputA = Node(1.0, [Node(2.0)])
inputB = inputA.deep_copy()
inputA.children[0].value = 3.0
self.assertEqual(2.0, inputB.children[0].value)
self.assertEqual(3.0, inputA.children[0].value)
def test_createNodeWithExpectedValue(self):
expectedValue = 1.0
inputNode = Node(expectedValue)
self.assertEqual(expectedValue, inputNode.value)
def test_createNodeWithExpectedChildren(self):
expectedChildren = [1, 2, 3, 4, 5]
inputNode = Node(1, expectedChildren)
self.assertEqual(expectedChildren, inputNode.children)