+ TestConstraintAngle_v0_1.py
+ TestConstraintAngle_v0_2.py
+ TestConstraintAngle_v20191210_1.py
+ TestConstraintAngle_v20191210_2.py
+ TestConstraintAngleBehaviorDirect.py
+ TestConstraintAngleBehaviorSupplementary_1.py
+ TestConstraintAngleBehaviorSupplementary_2.py
+ TestConstraintAngleBehaviorBackward_1.py
+ TestConstraintAngleBehaviorBackward_2.py