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# SPDX-FileCopyrightText: 2020-2023 Blender Authors
#
# SPDX-License-Identifier: GPL-2.0-or-later
import unittest
import bpy
import pathlib
import sys
from rna_prop_ui import rna_idprop_quote_path
"""
blender -b --factory-startup --python tests/python/bl_animation_drivers.py -- --testdir /path/to/tests/data/animation
"""
class AbstractEmptyDriverTest:
def setUp(self):
super().setUp()
bpy.ops.wm.read_homefile(use_factory_startup=True)
self.obj = bpy.data.objects['Cube']
def assertPropValue(self, prop_name, value):
self.assertEqual(self.obj[prop_name], value)
def _make_context_driver(obj, prop_name, ctx_type, ctx_path, index=None, fallback=None, force_python=False):
obj[prop_name] = 0
fcu = obj.driver_add(rna_idprop_quote_path(prop_name), -1)
drv = fcu.driver
if force_python:
# Expression that requires full python interpreter
drv.type = 'SCRIPTED'
drv.expression = '[var][0]'
else:
drv.type = 'SUM'
var = drv.variables.new()
var.name = "var"
var.type = 'CONTEXT_PROP'
tgt = var.targets[0]
tgt.context_property = ctx_type
tgt.data_path = rna_idprop_quote_path(ctx_path) + (f"[{index}]" if index is not None else "")
if fallback is not None:
tgt.use_fallback_value = True
tgt.fallback_value = fallback
return fcu
def _is_fallback_used(fcu):
return fcu.driver.variables[0].targets[0].is_fallback_used
class ContextSceneDriverTest(AbstractEmptyDriverTest, unittest.TestCase):
""" Ensure keying things by name or with a keying set adds the right keys. """
def setUp(self):
super().setUp()
bpy.context.scene["test_property"] = 123
def test_context_valid(self):
fcu = _make_context_driver(
self.obj, 'test_valid', 'ACTIVE_SCENE', 'test_property')
bpy.context.view_layer.update()
self.assertTrue(fcu.driver.is_valid)
self.assertPropValue('test_valid', 123)
def test_context_invalid(self):
fcu = _make_context_driver(
self.obj, 'test_invalid', 'ACTIVE_SCENE', 'test_property_bad')
bpy.context.view_layer.update()
self.assertFalse(fcu.driver.is_valid)
def test_context_fallback(self):
fcu = _make_context_driver(
self.obj, 'test_fallback', 'ACTIVE_SCENE', 'test_property_bad', fallback=321)
bpy.context.view_layer.update()
self.assertTrue(fcu.driver.is_valid)
self.assertTrue(_is_fallback_used(fcu))
self.assertPropValue('test_fallback', 321)
def test_context_fallback_valid(self):
fcu = _make_context_driver(
self.obj, 'test_fallback_valid', 'ACTIVE_SCENE', 'test_property', fallback=321)
bpy.context.view_layer.update()
self.assertTrue(fcu.driver.is_valid)
self.assertFalse(_is_fallback_used(fcu))
self.assertPropValue('test_fallback_valid', 123)
def test_context_fallback_python(self):
fcu = _make_context_driver(
self.obj, 'test_fallback_py', 'ACTIVE_SCENE', 'test_property_bad', fallback=321, force_python=True)
bpy.context.view_layer.update()
self.assertTrue(fcu.driver.is_valid)
self.assertTrue(_is_fallback_used(fcu))
self.assertPropValue('test_fallback_py', 321)
class ContextSceneArrayDriverTest(AbstractEmptyDriverTest, unittest.TestCase):
""" Ensure keying things by name or with a keying set adds the right keys. """
def setUp(self):
super().setUp()
bpy.context.scene["test_property"] = [123, 456]
def test_context_valid(self):
fcu = _make_context_driver(
self.obj, 'test_valid', 'ACTIVE_SCENE', 'test_property', index=0)
bpy.context.view_layer.update()
self.assertTrue(fcu.driver.is_valid)
self.assertPropValue('test_valid', 123)
def test_context_invalid(self):
fcu = _make_context_driver(
self.obj, 'test_invalid', 'ACTIVE_SCENE', 'test_property', index=2)
bpy.context.view_layer.update()
self.assertFalse(fcu.driver.is_valid)
def test_context_fallback(self):
fcu = _make_context_driver(
self.obj, 'test_fallback', 'ACTIVE_SCENE', 'test_property', index=2, fallback=321)
bpy.context.view_layer.update()
self.assertTrue(fcu.driver.is_valid)
self.assertTrue(_is_fallback_used(fcu))
self.assertPropValue('test_fallback', 321)
def test_context_fallback_valid(self):
fcu = _make_context_driver(
self.obj, 'test_fallback_valid', 'ACTIVE_SCENE', 'test_property', index=0, fallback=321)
bpy.context.view_layer.update()
self.assertTrue(fcu.driver.is_valid)
self.assertFalse(_is_fallback_used(fcu))
self.assertPropValue('test_fallback_valid', 123)
def test_context_fallback_python(self):
fcu = _make_context_driver(
self.obj, 'test_fallback_py', 'ACTIVE_SCENE', 'test_property', index=2, fallback=321, force_python=True)
bpy.context.view_layer.update()
self.assertTrue(fcu.driver.is_valid)
self.assertTrue(_is_fallback_used(fcu))
self.assertPropValue('test_fallback_py', 321)
def _select_view_layer(index):
bpy.context.window.view_layer = bpy.context.scene.view_layers[index]
class ContextViewLayerDriverTest(AbstractEmptyDriverTest, unittest.TestCase):
""" Ensure keying things by name or with a keying set adds the right keys. """
def setUp(self):
super().setUp()
bpy.ops.scene.view_layer_add(type='COPY')
scene = bpy.context.scene
scene.view_layers[0]['test_property'] = 123
scene.view_layers[1]['test_property'] = 456
_select_view_layer(0)
def test_context_valid(self):
fcu = _make_context_driver(
self.obj, 'test_valid', 'ACTIVE_VIEW_LAYER', 'test_property')
_select_view_layer(0)
bpy.context.view_layer.update()
self.assertTrue(fcu.driver.is_valid)
self.assertPropValue('test_valid', 123)
_select_view_layer(1)
bpy.context.view_layer.update()
self.assertTrue(fcu.driver.is_valid)
self.assertPropValue('test_valid', 456)
def test_context_fallback(self):
del bpy.context.scene.view_layers[1]['test_property']
fcu = _make_context_driver(
self.obj, 'test_fallback', 'ACTIVE_VIEW_LAYER', 'test_property', fallback=321)
_select_view_layer(0)
bpy.context.view_layer.update()
self.assertTrue(fcu.driver.is_valid)
self.assertFalse(_is_fallback_used(fcu))
self.assertPropValue('test_fallback', 123)
_select_view_layer(1)
bpy.context.view_layer.update()
self.assertTrue(fcu.driver.is_valid)
self.assertTrue(_is_fallback_used(fcu))
self.assertPropValue('test_fallback', 321)
def main():
global args
import argparse
if '--' in sys.argv:
argv = [sys.argv[0]] + sys.argv[sys.argv.index('--') + 1:]
else:
argv = sys.argv
parser = argparse.ArgumentParser()
parser.add_argument('--testdir', required=True, type=pathlib.Path)
args, remaining = parser.parse_known_args(argv)
unittest.main(argv=remaining)
if __name__ == "__main__":
main()
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