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Add edge bias feature to bias for testing edge cases. #369

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Add edge bias feature to bias for testing edge cases. #369

wants to merge 1 commit into from

Commits on Sep 6, 2023

  1. Add edge bias feature to bias for testing edge cases. 

    * Works by randomly changing some generated values to be one of the
  random edge cases. The first tests are done with 100% edge cases, and
  then the chance goes down over the number of test cases until it's 0%.
* The average amount of edge case tests can be controlled by edge_bias
  configuration option. It defaults to 0.25.
* In failure the edge bias is persisted to the persistence file along
  with the seed, so it should be reproducible.
* Also fix time::Duration test because the edge bias system found a
  problem in it. (Might need more modifications.)
* Fix float_samplers test subsequent_splits_always_match_bounds.
    @ajantti
    ajantti committed Sep 6, 2023
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