bpo-33516: Add support for __round__ in MagicMock (GH-6880)

unittest.mock.MagicMock now supports the __round__() magic method.

Backports: 6c4fab0f4b95410a1a964a75dcdd953697eff089
Signed-off-by: Chris Withers <chris@simplistix.co.uk>
3 files changed