2 files changed, 101 insertions, 0 deletions
diff --git a/tests/python/CMakeLists.txt b/tests/python/CMakeLists.txt
index 18f61d83c3c..7bfc1154ed4 100644
--- a/tests/python/CMakeLists.txt
+++ b/tests/python/CMakeLists.txt
@@ -218,6 +218,15 @@ add_blender_test(
 )
 
 # ------------------------------------------------------------------------------
+# ANIMATION TESTS
+add_blender_test(
+  bl_animation_fcurves
+  --python ${CMAKE_CURRENT_LIST_DIR}/bl_animation_fcurves.py
+  --
+  --testdir "${TEST_SRC_DIR}/animation"
+)
+
+# ------------------------------------------------------------------------------
 # IO TESTS
 
 # OBJ Import tests
diff --git a/tests/python/bl_animation_fcurves.py b/tests/python/bl_animation_fcurves.py
new file mode 100644
index 00000000000..16fd2b36e2c
--- /dev/null
+++ b/tests/python/bl_animation_fcurves.py
@@ -0,0 +1,92 @@
+# ##### BEGIN GPL LICENSE BLOCK #####
+#
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License
+#  as published by the Free Software Foundation; either version 2
+#  of the License, or (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software Foundation,
+#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# ##### END GPL LICENSE BLOCK #####
+
+# <pep8 compliant>
+
+"""
+blender -b -noaudio --factory-startup --python tests/python/bl_animation_fcurves.py -- --testdir /path/to/lib/tests/animation
+"""
+
+import pathlib
+import sys
+import unittest
+
+import bpy
+
+class FCurveEvaluationTest(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        cls.testdir = args.testdir
+      
+    def setUp(self):
+        self.assertTrue(self.testdir.exists(),
+                        'Test dir %s should exist' % self.testdir)
+
+    def test_fcurve_versioning_291(self):
+      # See D8752.
+      bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "fcurve-versioning-291.blend"))
+      cube = bpy.data.objects['Cube']
+      fcurve = cube.animation_data.action.fcurves.find('location', index=0)
+
+      self.assertAlmostEqual(0.0, fcurve.evaluate(1))
+      self.assertAlmostEqual(0.019638698548078537, fcurve.evaluate(2))
+      self.assertAlmostEqual(0.0878235399723053, fcurve.evaluate(3))
+      self.assertAlmostEqual(0.21927043795585632, fcurve.evaluate(4))
+      self.assertAlmostEqual(0.41515052318573, fcurve.evaluate(5))
+      self.assertAlmostEqual(0.6332430243492126, fcurve.evaluate(6))
+      self.assertAlmostEqual(0.8106040954589844, fcurve.evaluate(7))
+      self.assertAlmostEqual(0.924369215965271, fcurve.evaluate(8))
+      self.assertAlmostEqual(0.9830065965652466, fcurve.evaluate(9))
+      self.assertAlmostEqual(1.0, fcurve.evaluate(10))
+
+    def test_fcurve_extreme_handles(self):
+      # See D8752.
+      bpy.ops.wm.open_mainfile(filepath=str(self.testdir / "fcurve-extreme-handles.blend"))
+      cube = bpy.data.objects['Cube']
+      fcurve = cube.animation_data.action.fcurves.find('location', index=0)
+
+      self.assertAlmostEqual(0.0, fcurve.evaluate(1))
+      self.assertAlmostEqual(0.004713400732725859, fcurve.evaluate(2))
+      self.assertAlmostEqual(0.022335870191454887, fcurve.evaluate(3))
+      self.assertAlmostEqual(0.06331237405538559, fcurve.evaluate(4))
+      self.assertAlmostEqual(0.16721539199352264, fcurve.evaluate(5))
+      self.assertAlmostEqual(0.8327845335006714, fcurve.evaluate(6))
+      self.assertAlmostEqual(0.9366875886917114, fcurve.evaluate(7))
+      self.assertAlmostEqual(0.9776642322540283, fcurve.evaluate(8))
+      self.assertAlmostEqual(0.9952865839004517, fcurve.evaluate(9))
+      self.assertAlmostEqual(1.0, fcurve.evaluate(10))
+
+
+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()