| 9 | |
| 10 | |
| 11 | def test_scene_add_remove(dry_run): |
| 12 | scene = Scene() |
| 13 | assert len(scene.mobjects) == 0 |
| 14 | scene.add(Mobject()) |
| 15 | assert len(scene.mobjects) == 1 |
| 16 | scene.add(*(Mobject() for _ in range(10))) |
| 17 | assert len(scene.mobjects) == 11 |
| 18 | |
| 19 | # Check that adding a mobject twice does not actually add it twice |
| 20 | repeated = Mobject() |
| 21 | scene.add(repeated) |
| 22 | assert len(scene.mobjects) == 12 |
| 23 | scene.add(repeated) |
| 24 | assert len(scene.mobjects) == 12 |
| 25 | |
| 26 | # Check that Scene.add() returns the Scene (for chained calls) |
| 27 | assert scene.add(Mobject()) is scene |
| 28 | to_remove = Mobject() |
| 29 | scene = Scene() |
| 30 | scene.add(to_remove) |
| 31 | scene.add(*(Mobject() for _ in range(10))) |
| 32 | assert len(scene.mobjects) == 11 |
| 33 | scene.remove(to_remove) |
| 34 | assert len(scene.mobjects) == 10 |
| 35 | scene.remove(to_remove) |
| 36 | assert len(scene.mobjects) == 10 |
| 37 | |
| 38 | # Check that Scene.remove() returns the instance (for chained calls) |
| 39 | assert scene.add(Mobject()) is scene |
| 40 | |
| 41 | |
| 42 | def test_scene_time(dry_run): |