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# Apache License, Version 2.0
# ./blender.bin --background -noaudio --python tests/python/bl_blendfile_liblink.py
import bpy
import os
import sys
sys.path.append(os.path.dirname(os.path.realpath(__file__)))
from bl_blendfile_utils import TestHelper
class TestBlendLibLinkHelper(TestHelper):
def __init__(self, args):
self.args = args
@staticmethod
def reset_blender():
bpy.ops.wm.read_homefile(use_empty=True, use_factory_startup=True)
bpy.data.orphans_purge(do_recursive=True)
def unique_blendfile_name(self, base_name):
return base_name + self.__class__.__name__ + ".blend"
def init_lib_data_basic(self):
self.reset_blender()
me = bpy.data.meshes.new("LibMesh")
ob = bpy.data.objects.new("LibMesh", me)
coll = bpy.data.collections.new("LibMesh")
coll.objects.link(ob)
bpy.context.scene.collection.children.link(coll)
output_dir = self.args.output_dir
self.ensure_path(output_dir)
# Take care to keep the name unique so multiple test jobs can run at once.
output_lib_path = os.path.join(output_dir, self.unique_blendfile_name("blendlib"))
bpy.ops.wm.save_as_mainfile(filepath=output_lib_path, check_existing=False, compress=False)
return output_lib_path
class TestBlendLibLinkSaveLoadBasic(TestBlendLibLinkHelper):
def __init__(self, args):
self.args = args
def test_link_save_load(self):
output_dir = self.args.output_dir
output_lib_path = self.init_lib_data_basic()
# Simple link of a single ObData.
self.reset_blender()
link_dir = os.path.join(output_lib_path, "Mesh")
bpy.ops.wm.link(directory=link_dir, filename="LibMesh", instance_object_data=False)
assert(len(bpy.data.meshes) == 1)
assert(len(bpy.data.objects) == 0)
assert(len(bpy.data.collections) == 0) # Scene's master collection is not listed here
orig_data = self.blender_data_to_tuple(bpy.data, "orig_data")
output_work_path = os.path.join(output_dir, self.unique_blendfile_name("blendfile"))
bpy.ops.wm.save_as_mainfile(filepath=output_work_path, check_existing=False, compress=False)
bpy.ops.wm.open_mainfile(filepath=output_work_path, load_ui=False)
read_data = self.blender_data_to_tuple(bpy.data, "read_data")
# Since there is no usage of linked mesh, it is lost during save/reload.
assert(len(bpy.data.meshes) == 0)
assert(orig_data != read_data)
# Simple link of a single ObData with obdata instanciation.
self.reset_blender()
link_dir = os.path.join(output_lib_path, "Mesh")
bpy.ops.wm.link(directory=link_dir, filename="LibMesh", instance_object_data=True)
assert(len(bpy.data.meshes) == 1)
assert(len(bpy.data.objects) == 1) # Instance created for the mesh ObData.
assert(len(bpy.data.collections) == 0) # Scene's master collection is not listed here
orig_data = self.blender_data_to_tuple(bpy.data, "orig_data")
bpy.ops.wm.save_as_mainfile(filepath=output_work_path, check_existing=False, compress=False)
bpy.ops.wm.open_mainfile(filepath=output_work_path, load_ui=False)
read_data = self.blender_data_to_tuple(bpy.data, "read_data")
assert(orig_data == read_data)
# Simple link of a single Object.
self.reset_blender()
link_dir = os.path.join(output_lib_path, "Object")
bpy.ops.wm.link(directory=link_dir, filename="LibMesh")
assert(len(bpy.data.meshes) == 1)
assert(len(bpy.data.objects) == 1)
assert(len(bpy.data.collections) == 0) # Scene's master collection is not listed here
orig_data = self.blender_data_to_tuple(bpy.data, "orig_data")
bpy.ops.wm.save_as_mainfile(filepath=output_work_path, check_existing=False, compress=False)
bpy.ops.wm.open_mainfile(filepath=output_work_path, load_ui=False)
read_data = self.blender_data_to_tuple(bpy.data, "read_data")
assert(orig_data == read_data)
# Simple link of a single Collection, with Empty-instanciation.
self.reset_blender()
link_dir = os.path.join(output_lib_path, "Collection")
bpy.ops.wm.link(directory=link_dir, filename="LibMesh", instance_collections=True)
assert(len(bpy.data.meshes) == 1)
assert(len(bpy.data.objects) == 2) # linked object and local empty instancing the collection
assert(len(bpy.data.collections) == 1) # Scene's master collection is not listed here
orig_data = self.blender_data_to_tuple(bpy.data, "orig_data")
bpy.ops.wm.save_as_mainfile(filepath=output_work_path, check_existing=False, compress=False)
bpy.ops.wm.open_mainfile(filepath=output_work_path, load_ui=False)
read_data = self.blender_data_to_tuple(bpy.data, "read_data")
assert(orig_data == read_data)
# Simple link of a single Collection, with ViewLayer-instanciation.
self.reset_blender()
link_dir = os.path.join(output_lib_path, "Collection")
bpy.ops.wm.link(directory=link_dir, filename="LibMesh", instance_collections=False)
assert(len(bpy.data.meshes) == 1)
assert(len(bpy.data.objects) == 1)
assert(len(bpy.data.collections) == 1) # Scene's master collection is not listed here
# Linked collection should have been added to the scene's master collection children.
assert(bpy.data.collections[0] in set(bpy.data.scenes[0].collection.children))
orig_data = self.blender_data_to_tuple(bpy.data, "orig_data")
bpy.ops.wm.save_as_mainfile(filepath=output_work_path, check_existing=False, compress=False)
bpy.ops.wm.open_mainfile(filepath=output_work_path, load_ui=False)
read_data = self.blender_data_to_tuple(bpy.data, "read_data")
assert(orig_data == read_data)
class TestBlendLibAppendBasic(TestBlendLibLinkHelper):
def __init__(self, args):
self.args = args
def test_append(self):
output_dir = self.args.output_dir
output_lib_path = self.init_lib_data_basic()
# Simple append of a single ObData.
self.reset_blender()
link_dir = os.path.join(output_lib_path, "Mesh")
bpy.ops.wm.append(directory=link_dir, filename="LibMesh",
instance_object_data=False, set_fake=False, use_recursive=False, do_reuse_local_id=False)
assert(len(bpy.data.meshes) == 1)
assert(bpy.data.meshes[0].library is None)
assert(bpy.data.meshes[0].use_fake_user is False)
assert(bpy.data.meshes[0].users == 0)
assert(len(bpy.data.objects) == 0)
assert(len(bpy.data.collections) == 0) # Scene's master collection is not listed here
# Simple append of a single ObData with obdata instanciation.
self.reset_blender()
link_dir = os.path.join(output_lib_path, "Mesh")
bpy.ops.wm.append(directory=link_dir, filename="LibMesh",
instance_object_data=True, set_fake=False, use_recursive=False, do_reuse_local_id=False)
assert(len(bpy.data.meshes) == 1)
assert(bpy.data.meshes[0].library is None)
assert(bpy.data.meshes[0].use_fake_user is False)
assert(bpy.data.meshes[0].users == 1)
assert(len(bpy.data.objects) == 1) # Instance created for the mesh ObData.
assert(bpy.data.objects[0].library is None)
assert(len(bpy.data.collections) == 0) # Scene's master collection is not listed here
# Simple append of a single ObData with fake user.
self.reset_blender()
link_dir = os.path.join(output_lib_path, "Mesh")
bpy.ops.wm.append(directory=link_dir, filename="LibMesh",
instance_object_data=False, set_fake=True, use_recursive=False, do_reuse_local_id=False)
assert(len(bpy.data.meshes) == 1)
assert(bpy.data.meshes[0].library is None)
assert(bpy.data.meshes[0].use_fake_user is True)
assert(bpy.data.meshes[0].users == 1)
assert(len(bpy.data.objects) == 0)
assert(len(bpy.data.collections) == 0) # Scene's master collection is not listed here
# Simple append of a single Object.
self.reset_blender()
link_dir = os.path.join(output_lib_path, "Object")
bpy.ops.wm.append(directory=link_dir, filename="LibMesh",
instance_object_data=False, set_fake=False, use_recursive=False, do_reuse_local_id=False)
assert(len(bpy.data.meshes) == 1)
# This one fails currently, for unclear reasons.
assert(bpy.data.meshes[0].library is not None)
assert(bpy.data.meshes[0].users == 1)
assert(len(bpy.data.objects) == 1)
assert(bpy.data.objects[0].library is None)
assert(bpy.data.objects[0].users == 1)
assert(len(bpy.data.collections) == 0) # Scene's master collection is not listed here
# Simple recursive append of a single Object.
self.reset_blender()
link_dir = os.path.join(output_lib_path, "Object")
bpy.ops.wm.append(directory=link_dir, filename="LibMesh",
instance_object_data=False, set_fake=False, use_recursive=True, do_reuse_local_id=False)
assert(len(bpy.data.meshes) == 1)
assert(bpy.data.meshes[0].library is None)
assert(bpy.data.meshes[0].users == 1)
assert(len(bpy.data.objects) == 1)
assert(bpy.data.objects[0].library is None)
assert(bpy.data.objects[0].users == 1)
assert(len(bpy.data.collections) == 0) # Scene's master collection is not listed here
# Simple recursive append of a single Collection.
self.reset_blender()
link_dir = os.path.join(output_lib_path, "Collection")
bpy.ops.wm.append(directory=link_dir, filename="LibMesh",
instance_object_data=False, set_fake=False, use_recursive=True, do_reuse_local_id=False)
assert(bpy.data.meshes[0].library is None)
assert(bpy.data.meshes[0].users == 1)
assert(len(bpy.data.objects) == 1)
assert(bpy.data.objects[0].library is None)
assert(bpy.data.objects[0].users == 1)
assert(len(bpy.data.collections) == 1) # Scene's master collection is not listed here
assert(bpy.data.collections[0].library is None)
assert(bpy.data.collections[0].users == 1)
class TestBlendLibAppendReuseID(TestBlendLibLinkHelper):
def __init__(self, args):
self.args = args
def test_append(self):
output_dir = self.args.output_dir
output_lib_path = self.init_lib_data_basic()
# Append of a single Object, and then append it again.
self.reset_blender()
link_dir = os.path.join(output_lib_path, "Object")
bpy.ops.wm.append(directory=link_dir, filename="LibMesh",
instance_object_data=False, set_fake=False, use_recursive=True, do_reuse_local_id=False)
assert(len(bpy.data.meshes) == 1)
assert(bpy.data.meshes[0].library is None)
assert(bpy.data.meshes[0].use_fake_user is False)
assert(bpy.data.meshes[0].users == 1)
assert(bpy.data.meshes[0].library_weak_reference is not None)
assert(bpy.data.meshes[0].library_weak_reference.filepath == output_lib_path)
assert(bpy.data.meshes[0].library_weak_reference.id_name == "MELibMesh")
assert(len(bpy.data.objects) == 1)
for ob in bpy.data.objects:
assert(ob.library is None)
assert(ob.library_weak_reference is None)
assert(len(bpy.data.collections) == 0) # Scene's master collection is not listed here
bpy.ops.wm.append(directory=link_dir, filename="LibMesh",
instance_object_data=False, set_fake=False, use_recursive=True, do_reuse_local_id=True)
assert(len(bpy.data.meshes) == 1)
assert(bpy.data.meshes[0].library is None)
assert(bpy.data.meshes[0].use_fake_user is False)
assert(bpy.data.meshes[0].users == 2)
assert(bpy.data.meshes[0].library_weak_reference is not None)
assert(bpy.data.meshes[0].library_weak_reference.filepath == output_lib_path)
assert(bpy.data.meshes[0].library_weak_reference.id_name == "MELibMesh")
assert(len(bpy.data.objects) == 2)
for ob in bpy.data.objects:
assert(ob.library is None)
assert(ob.library_weak_reference is None)
assert(len(bpy.data.collections) == 0) # Scene's master collection is not listed here
bpy.ops.wm.append(directory=link_dir, filename="LibMesh",
instance_object_data=False, set_fake=False, use_recursive=True, do_reuse_local_id=False)
assert(len(bpy.data.meshes) == 2)
assert(bpy.data.meshes[0].library_weak_reference is None)
assert(bpy.data.meshes[1].library is None)
assert(bpy.data.meshes[1].use_fake_user is False)
assert(bpy.data.meshes[1].users == 1)
assert(bpy.data.meshes[1].library_weak_reference is not None)
assert(bpy.data.meshes[1].library_weak_reference.filepath == output_lib_path)
assert(bpy.data.meshes[1].library_weak_reference.id_name == "MELibMesh")
assert(len(bpy.data.objects) == 3)
for ob in bpy.data.objects:
assert(ob.library is None)
assert(ob.library_weak_reference is None)
assert(len(bpy.data.collections) == 0) # Scene's master collection is not listed here
TESTS = (
TestBlendLibLinkSaveLoadBasic,
TestBlendLibAppendBasic,
TestBlendLibAppendReuseID,
)
def argparse_create():
import argparse
# When --help or no args are given, print this help
description = "Test basic IO of blend file."
parser = argparse.ArgumentParser(description=description)
parser.add_argument(
"--output-dir",
dest="output_dir",
default=".",
help="Where to output temp saved blendfiles",
required=False,
)
return parser
def main():
args = argparse_create().parse_args()
# Don't write thumbnails into the home directory.
bpy.context.preferences.filepaths.file_preview_type = 'NONE'
for Test in TESTS:
Test(args).run_all_tests()
if __name__ == '__main__':
import sys
sys.argv = [__file__] + (sys.argv[sys.argv.index("--") + 1:] if "--" in sys.argv else [])
main()
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