Specify permutations for isolation tests with "invalid" permutations.
Robert Haas <rhaas@postgresql.org>
Specify permutations for isolation tests with "invalid" permutations. This is a necessary prerequisite for forthcoming changes to allow deadlock scenarios to be tested by the isolation tester. It is also a good idea on general principle, since these scenarios add no useful test coverage not provided by other scenarios, but do to take time to execute.