def test_load_inherited(self):
""" Can load an inherited scene and read the nodes """
scene = GDScene.load(self.leaf_scene)
with scene.use_tree() as tree:
node = tree.get_node("Health/LifeBar")
self.assertIsNotNone(node)
self.assertEqual(node.type, "TextureProgress")
def test_disappear_sections(self):
""" Inherited nodes are removed from sections if we change their configuration to match parent """
scene = GDScene.load(self.leaf_scene)
with scene.use_tree() as tree:
sprite = tree.get_node("Sprite")
sprite["flip_h"] = False
# Sprite should match parent now, and not be in file
node = scene.find_section("node", name="Sprite")
self.assertIsNone(node)
def test_inherit_properties(self):
""" Inherited nodes inherit properties """
scene = GDScene.load(self.leaf_scene)
with scene.use_tree() as tree:
self.assertEqual(tree.root["shape"], SubResource(1))
self.assertEqual(tree.root["collision_layer"], 4)
self.assertEqual(tree.root.get("collision_layer"), 4)
self.assertEqual(tree.root.get("missing"), None)
self.assertRaises(KeyError, lambda: tree.root["missing"])
def test_overwrite_sections(self):
""" Inherited nodes appear in sections if we change their configuration """
scene = GDScene.load(self.leaf_scene)
with scene.use_tree() as tree:
node = tree.get_node("Health/LifeBar")
node["pause_mode"] = 2
num_nodes = len(scene.get_nodes())
self.assertEqual(num_nodes, 3)
node = scene.find_section("node", name="LifeBar", parent="Health")
self.assertIsNotNone(node)
def test_cannot_remove(self):
""" Cannot remove inherited nodes """
scene = GDScene.load(self.leaf_scene)
with scene.use_tree() as tree:
node = tree.get_node("Health")
self.assertRaises(TreeMutationException, node.remove_from_parent)
self.assertRaises(TreeMutationException,
lambda: tree.root.remove_child(0))
self.assertRaises(TreeMutationException,
lambda: tree.root.remove_child("Health"))
def test_unchanged_sections(self):
""" Inherited nodes do not appear in sections """
scene = GDScene.load(self.leaf_scene)
num_nodes = len(scene.get_nodes())
self.assertEqual(num_nodes, 2)
with scene.use_tree() as tree:
sprite = tree.get_node("Sprite")
sprite["flip_v"] = True
# No new nodes
num_nodes = len(scene.get_nodes())
self.assertEqual(num_nodes, 2)
def test_add_new_nodes(self):
""" Can add new nodes to an inherited scene """
scene = GDScene.load(self.leaf_scene)
with scene.use_tree() as tree:
tree.get_node("Health/LifeBar")
node = Node("NewChild", type="Control")
tree.root.add_child(node)
# Non-inherited node can change name, type, instance
node.instance = 2
node.type = "Node2D"
node.name = "NewChild2"
found = scene.find_section("node", name="NewChild2")
self.assertIsNotNone(found)
self.assertEqual(found.type, "Node2D")
self.assertEqual(found.parent, ".")
self.assertEqual(found.index, 3)
def test_cannot_mutate(self):
""" Cannot change the name/type/instance of inherited nodes """
scene = GDScene.load(self.leaf_scene)
def change_name(x):
x.name = "foo"
def change_type(x):
x.type = "foo"
def change_instance(x):
x.instance = 2
with scene.use_tree() as tree:
node = tree.get_node("Health")
self.assertRaises(TreeMutationException, lambda: change_name(node))
self.assertRaises(TreeMutationException, lambda: change_type(node))
self.assertRaises(TreeMutationException,
lambda: change_instance(node))
def test_missing_ext_resource(self):
""" Raise exception when GDScene is inherited but ext_resource is missing """
scene = GDScene.load(self.leaf_scene)
for section in scene.get_ext_resources():
scene.remove_section(section)
self.assertRaises(RuntimeError, lambda: scene.get_node("Root"))
