4ba3e90f33
Replace -1 with 0 for the liveness check operation to avoid triggering digest validation failures. This prevents rare fatal errors when the cluster is recovering and ensures the test does not violate append_seq invariants. The value -1 was causing invalid digest results in the append_seq structure, leading to assertion failures. This could happen when the sentinel value was the first (or only) element being appended, resulting in a digest that did not match the expected value. By using 0 instead, we ensure that the digest calculations remain valid and consistent with the expected behavior of the test. The specific value of the sentinel is not important, as long as it is a valid elem_t that does not violate the invariants of the append_seq structure. In particular, the sentinel value is typically used only when no valid result is received from any server in the current loop iteration, in which case the loop will retry. Fixes: scylladb/scylladb#27307
Running tests with pytest
To run test with pytest execute
pytest test/raft
To execute only one file, provide the path filename
pytest test/raft/many_test.cc
Since it's a normal path, autocompletion works in the terminal out of the box.
To provide a specific mode, use the next parameter --mode dev,
if parameter isn't provided pytest tries to use ninja mode_list to find out the compiled modes.
Parallel execution is controlled by pytest-xdist and the parameter -n auto.
This command starts tests with the number of workers equal to CPU cores.