def test_guess_not_null(self):
"""
pre: none
post: confirms that a record may not be saved without a value for guess
"""
n = Node(guess=None)
with self.assertRaises(IntegrityError):
n.save()
def populate_data():
"""
pre: none
post: resets the database back to the initial state as follows:
according the data in initial_data.json
"""
print 'populating data '
with open('trees/initial_data.json', 'r') as data_file:
data = json.load(data_file)
for record in data:
print "record is", record
node = Node(id=record['id'],
guess=record['guess'],
edge=record['edge'],
parent_id=record['parent_id'],
question=record['question']
)
node.save()
print ' -> Done!'
def insert(self, node, root: Node = None):
if not self._root:
self._root = node
return
if not root:
root = self._root
print(
f'Inserting {node}, root is {root}. Root: {root.left} <> {root.right}'
)
if node.data >= root.data:
if root.right is None:
node.set_root(root)
root.set_right(node)
else:
self.insert(node, root.right)
else:
if root.left is None:
node.set_root(root)
root.set_left(node)
else:
self.insert(node, root.left)