Add inference tests on inverse_transform

[Mr-Geekman]

🚀 Feature Request

In #1094 we added tests for transform method. We also want to add similar tests for inverse_transform.

Proposal

1. TestInverseTransformTrainSubsetSegments
   Do transform + inverse_transform on all segments, on subset of segments and compare them.
2. TestInverseTransformFutureSubsetSegments
   Same
3. TestInverseTransformTrainNewSegments
   Check that inverse_transform generates expected columns:
   • Expected columns are removed.
   • Expected columns are added.
   • Expected columns are revert to original values.
   • No other changes are made.
4. TestInverseTransformFutureNewSegments
   Same
5. TestTransformFutureWithTarget
   Same
6. TestTransformFutureWithoutTarget
   Same

Test cases

Look at Proposal.

Additional context

No response

[Mr-Geekman]

Closed by #1127.