The BFT Time protocol is responsible for assiging block times, and it is adopted in all release versions. From v1.x, it should be replaced by PBTS, but it is still supported and adopted by default (PBTS is enabled via a consensus parameter).

The main method for the timestamp computation is MedianTime of the types.Commit type. This method is not covered by any test unit in thetypes package. It relies on the WeightedMedian function from the types/time package, which has a single test unit, that essentially hasn't changed at all from its introduction in tendermint/tendermint#2203.

DoD

• Write test units for the MedianTime method
• Consider additional scenarios to test the WeightedMedian method
• If some new critical scenario is identified, update the spec to document it