def testPreserveSceneNotModified(self):
"""
Tests that making scene modifications using a
UsdMayaBlockSceneModificationContext on a scene that has not been
modified correctly maintains the modification status after the context
exits.
"""
with UsdMaya.BlockSceneModificationContext():
# Create a cube inside the context manager.
cmds.polyCube()
# The scene should NOT be modified.
self._AssertSceneIsModified(False)
def testPreserveSceneModified(self):
"""
Tests that making scene modifications using a
UsdMayaBlockSceneModificationContext on a scene that has already been
modified correctly maintains the modification status after the context
exits.
"""
# Create a cube to dirty the scene.
cmds.polyCube()
self._AssertSceneIsModified(True)
with UsdMaya.BlockSceneModificationContext():
# Create a cube inside the context manager.
cmds.polyCube()
# The scene should still be modified.
self._AssertSceneIsModified(True)
