Move the review UI sandboxing unit tests into reviews/ui/tests.py.

Review Request #6684 — Created Dec. 9, 2014 and submitted — Latest diff uploaded

Information

Review Board
release-2.0.x
2d46cdf...

Reviewers

The review UI sandboxing tests were added to reviews/tests.py, but
they're more appropriately located in reviews/ui/tests.py. This moves
them and also fixes up the docstring formatting to fit on a single
line.

Unit tests pass.