| from __future__ import annotations | |
| from manim import Circle, ReplacementTransform, Scene, Square, VGroup | |
| def test_no_duplicate_references(): | |
| scene = Scene() | |
| c = Circle() | |
| sq = Square() | |
| scene.add(c, sq) | |
| scene.play(ReplacementTransform(c, sq)) | |
| assert len(scene.mobjects) == 1 | |
| assert scene.mobjects[0] is sq | |
| def test_duplicate_references_in_group(): | |
| scene = Scene() | |
| c = Circle() | |
| sq = Square() | |
| vg = VGroup(c, sq) | |
| scene.add(vg) | |
| scene.play(ReplacementTransform(c, sq)) | |
| submobs = vg.submobjects | |
| assert len(submobs) == 1 | |
| assert submobs[0] is sq | |