See https://github.com/kiegroup/optaplanner/pull/731.

Expected result:

• The test should pass. The quick fix in the PR proves it's technically possible to verify the score without a solution instance (if the penalty/reward is not configurable).
• Not sure about the case when they are configurable. I imagine that when the solution is not provided it should fallback to the VRP case and simply ignore constraint weights. If not, it should fail fast.
• If for some reason the expected fix is not possible than the API shouldn't allow given(facts) when verifying the whole provider.