Said method passes down its `diff` input to `mutate_internal()`, after some std::ranges massaging. Said massaging is destructive -- it moves items from the diff. If the output range is iterated-over multiple times, only the first time will see the actual output, further iterations will get an empty range. When trace-level logging is enabled, this is exactly what happens: `mutate_internal()` iterates over the range multiple times, first to log its content, then to pass it down the stack. This ends up resulting in a range with moved-from elements being pased down and consequently write handlers being created with nullopt mutations. Make the range re-entrant by materializing it into a vector before passing it to `mutate_internal()`. Fixes: scylladb/scylladb#21907 Fixes: scylladb/scylladb#21714 Closes scylladb/scylladb#21910
Scylla in-source tests.
For details on how to run the tests, see docs/dev/testing.md
Shared C++ utils, libraries are in lib/, for Python - pylib/
alternator - Python tests which connect to a single server and use the DynamoDB API unit, boost, raft - unit tests in C++ cqlpy - Python tests which connect to a single server and use CQL topology* - tests that set up clusters and add/remove nodes cql - approval tests that use CQL and pre-recorded output rest_api - tests for Scylla REST API Port 9000 scylla-gdb - tests for scylla-gdb.py helper script nodetool - tests for C++ implementation of nodetool
If you can use an existing folder, consider adding your test to it. New folders should be used for new large categories/subsystems, or when the test environment is significantly different from some existing suite, e.g. you plan to start scylladb with different configuration, and you intend to add many tests and would like them to reuse an existing Scylla cluster (clusters can be reused for tests within the same folder).
To add a new folder, create a new directory, and then
copy & edit its suite.ini.