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# -*- coding: utf-8 -*-
from anytree import AnyNode, LoopError, Node, NodeMixin, PostOrderIter, PreOrderIter, RenderTree, TreeError
from .helper import assert_raises, eq_
class TNode(Node):
TRACKING = []
def _pre_detach(self, parent):
"""Method call before detaching from `parent`."""
self.TRACKING.append("_pre_detach(%r, %r)" % (self.name, parent.name))
def _post_detach(self, parent):
"""Method call after detaching from `parent`."""
self.TRACKING.append("_post_detach(%r, %r)" % (self.name, parent.name))
def _pre_attach(self, parent):
"""Method call before attaching to `parent`."""
self.TRACKING.append("_pre_attach(%r, %r)" % (self.name, parent.name))
def _post_attach(self, parent):
"""Method call after attaching to `parent`."""
self.TRACKING.append("_post_attach(%r, %r)" % (self.name, parent.name))
def _pre_detach_children(self, children):
"""Method call before detaching `children`."""
self.TRACKING.append("_pre_detach_children(%r, %r)" % (self.name, tuple(child.name for child in children)))
def _post_detach_children(self, children):
"""Method call after detaching `children`."""
self.TRACKING.append("_post_detach_children(%r, %r)" % (self.name, tuple(child.name for child in children)))
def _pre_attach_children(self, children):
"""Method call before attaching `children`."""
self.TRACKING.append("_pre_attach_children(%r, %r)" % (self.name, tuple(child.name for child in children)))
def _post_attach_children(self, children):
"""Method call after attaching `children`."""
self.TRACKING.append("_post_attach_children(%r, %r)" % (self.name, tuple(child.name for child in children)))
def test_parent_child():
"""A tree parent and child attributes."""
root = TNode("root")
s0 = TNode("sub0", parent=root)
s0b = TNode("sub0B", parent=s0)
s0a = TNode("sub0A", parent=s0)
s1 = TNode("sub1", parent=root)
s1a = TNode("sub1A", parent=s1)
s1b = TNode("sub1B", parent=s1)
s1c = TNode("sub1C", parent=s1)
s1ca = TNode("sub1Ca", parent=s1c)
assert TNode.TRACKING == [
"_pre_attach('sub0', 'root')",
"_post_attach('sub0', 'root')",
"_pre_attach('sub0B', 'sub0')",
"_post_attach('sub0B', 'sub0')",
"_pre_attach('sub0A', 'sub0')",
"_post_attach('sub0A', 'sub0')",
"_pre_attach('sub1', 'root')",
"_post_attach('sub1', 'root')",
"_pre_attach('sub1A', 'sub1')",
"_post_attach('sub1A', 'sub1')",
"_pre_attach('sub1B', 'sub1')",
"_post_attach('sub1B', 'sub1')",
"_pre_attach('sub1C', 'sub1')",
"_post_attach('sub1C', 'sub1')",
"_pre_attach('sub1Ca', 'sub1C')",
"_post_attach('sub1Ca', 'sub1C')",
]
TNode.TRACKING.clear()
# change parent
s1ca.parent = s0
# break tree into two
s1.parent = None
# set to the same
s1b.parent = s1
assert TNode.TRACKING == [
"_pre_detach('sub1Ca', 'sub1C')",
"_post_detach('sub1Ca', 'sub1C')",
"_pre_attach('sub1Ca', 'sub0')",
"_post_attach('sub1Ca', 'sub0')",
"_pre_detach('sub1', 'root')",
"_post_detach('sub1', 'root')",
]
TNode.TRACKING.clear()
def test_detach_children():
root = TNode("root")
s0 = TNode("sub0", parent=root)
s0b = TNode("sub0B", parent=s0)
s0a = TNode("sub0A", parent=s0)
s1 = TNode("sub1", parent=root)
s1a = TNode("sub1A", parent=s1)
s1b = TNode("sub1B", parent=s1)
s1c = TNode("sub1C", parent=s1)
s1ca = TNode("sub1Ca", parent=s1c)
assert TNode.TRACKING == [
"_pre_attach('sub0', 'root')",
"_post_attach('sub0', 'root')",
"_pre_attach('sub0B', 'sub0')",
"_post_attach('sub0B', 'sub0')",
"_pre_attach('sub0A', 'sub0')",
"_post_attach('sub0A', 'sub0')",
"_pre_attach('sub1', 'root')",
"_post_attach('sub1', 'root')",
"_pre_attach('sub1A', 'sub1')",
"_post_attach('sub1A', 'sub1')",
"_pre_attach('sub1B', 'sub1')",
"_post_attach('sub1B', 'sub1')",
"_pre_attach('sub1C', 'sub1')",
"_post_attach('sub1C', 'sub1')",
"_pre_attach('sub1Ca', 'sub1C')",
"_post_attach('sub1Ca', 'sub1C')",
]
TNode.TRACKING.clear()
del s0.children
assert TNode.TRACKING == [
"_pre_detach_children('sub0', ('sub0B', 'sub0A'))",
"_pre_detach('sub0B', 'sub0')",
"_post_detach('sub0B', 'sub0')",
"_pre_detach('sub0A', 'sub0')",
"_post_detach('sub0A', 'sub0')",
"_post_detach_children('sub0', ('sub0B', 'sub0A'))",
]
TNode.TRACKING.clear()
del s1.children
assert TNode.TRACKING == [
"_pre_detach_children('sub1', ('sub1A', 'sub1B', 'sub1C'))",
"_pre_detach('sub1A', 'sub1')",
"_post_detach('sub1A', 'sub1')",
"_pre_detach('sub1B', 'sub1')",
"_post_detach('sub1B', 'sub1')",
"_pre_detach('sub1C', 'sub1')",
"_post_detach('sub1C', 'sub1')",
"_post_detach_children('sub1', ('sub1A', 'sub1B', 'sub1C'))",
]
TNode.TRACKING.clear()
def test_children_setter():
root = TNode("root")
s0 = TNode("sub0")
s1 = TNode("sub0A")
s0a = TNode("sub0B")
assert TNode.TRACKING == []
TNode.TRACKING.clear()
root.children = [s0, s1]
s0.children = [s0a]
assert TNode.TRACKING == [
"_pre_detach_children('root', ())",
"_post_detach_children('root', ())",
"_pre_attach_children('root', ('sub0', 'sub0A'))",
"_pre_attach('sub0', 'root')",
"_post_attach('sub0', 'root')",
"_pre_attach('sub0A', 'root')",
"_post_attach('sub0A', 'root')",
"_post_attach_children('root', ('sub0', 'sub0A'))",
"_pre_detach_children('sub0', ())",
"_post_detach_children('sub0', ())",
"_pre_attach_children('sub0', ('sub0B',))",
"_pre_attach('sub0B', 'sub0')",
"_post_attach('sub0B', 'sub0')",
"_post_attach_children('sub0', ('sub0B',))",
]
TNode.TRACKING.clear()
with assert_raises(LoopError, "Cannot set parent. TNode('/root/sub0') cannot be parent of itself."):
s0.children = [s0]
# test whether tree is unchanged after LoopError
assert TNode.TRACKING == [
"_pre_detach_children('sub0', ('sub0B',))",
"_pre_detach('sub0B', 'sub0')",
"_post_detach('sub0B', 'sub0')",
"_post_detach_children('sub0', ('sub0B',))",
"_pre_attach_children('sub0', ('sub0',))",
"_pre_detach_children('sub0', ())",
"_post_detach_children('sub0', ())",
"_pre_attach_children('sub0', ('sub0B',))",
"_pre_attach('sub0B', 'sub0')",
"_post_attach('sub0B', 'sub0')",
"_post_attach_children('sub0', ('sub0B',))",
]
TNode.TRACKING.clear()
with assert_raises(LoopError, "Cannot set parent. TNode('/root/sub0') is parent of TNode('/root/sub0/sub0B')."):
s0a.children = [s0]
# test whether tree is unchanged after LoopError
assert TNode.TRACKING == [
"_pre_detach_children('sub0B', ())",
"_post_detach_children('sub0B', ())",
"_pre_attach_children('sub0B', ('sub0',))",
"_pre_detach_children('sub0B', ())",
"_post_detach_children('sub0B', ())",
"_pre_attach_children('sub0B', ())",
"_post_attach_children('sub0B', ())",
]
TNode.TRACKING.clear()
root.children = [s0, s1]
assert TNode.TRACKING == [
"_pre_detach_children('root', ('sub0', 'sub0A'))",
"_pre_detach('sub0', 'root')",
"_post_detach('sub0', 'root')",
"_pre_detach('sub0A', 'root')",
"_post_detach('sub0A', 'root')",
"_post_detach_children('root', ('sub0', 'sub0A'))",
"_pre_attach_children('root', ('sub0', 'sub0A'))",
"_pre_attach('sub0', 'root')",
"_post_attach('sub0', 'root')",
"_pre_attach('sub0A', 'root')",
"_post_attach('sub0A', 'root')",
"_post_attach_children('root', ('sub0', 'sub0A'))",
]
TNode.TRACKING.clear()
s0.children = [s0a]
assert TNode.TRACKING == [
"_pre_detach_children('sub0', ('sub0B',))",
"_pre_detach('sub0B', 'sub0')",
"_post_detach('sub0B', 'sub0')",
"_post_detach_children('sub0', ('sub0B',))",
"_pre_attach_children('sub0', ('sub0B',))",
"_pre_attach('sub0B', 'sub0')",
"_post_attach('sub0B', 'sub0')",
"_post_attach_children('sub0', ('sub0B',))",
]
TNode.TRACKING.clear()
s0a.children = [s1]
assert TNode.TRACKING == [
"_pre_detach_children('sub0B', ())",
"_post_detach_children('sub0B', ())",
"_pre_attach_children('sub0B', ('sub0A',))",
"_pre_detach('sub0A', 'root')",
"_post_detach('sub0A', 'root')",
"_pre_attach('sub0A', 'sub0B')",
"_post_attach('sub0A', 'sub0B')",
"_post_attach_children('sub0B', ('sub0A',))",
]
TNode.TRACKING.clear()
root.children = [s0, s1]
assert TNode.TRACKING == [
"_pre_detach_children('root', ('sub0',))",
"_pre_detach('sub0', 'root')",
"_post_detach('sub0', 'root')",
"_post_detach_children('root', ('sub0',))",
"_pre_attach_children('root', ('sub0', 'sub0A'))",
"_pre_attach('sub0', 'root')",
"_post_attach('sub0', 'root')",
"_pre_detach('sub0A', 'sub0B')",
"_post_detach('sub0A', 'sub0B')",
"_pre_attach('sub0A', 'root')",
"_post_attach('sub0A', 'root')",
"_post_attach_children('root', ('sub0', 'sub0A'))",
]
TNode.TRACKING.clear()
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