test.py already support the routing of coverage data into a predetermined folder under the `tmpdir` logs folder. This patch extends on that and leverage the code coverage processing libraries to produce test coverage lcov files and a coverage summary at the end of the run. The reason for not generating the full report (which can be achieved with a one liner through the `coverage_utils.py` cli) is that it is assumed that unit testing is not necessarily the "last stop" in the testing process and it might need to be joined with other coverage information that is created at other testing stages (for example dtest). The result of this patch is that when running test.py with one of the coverage options (`--coverage` / `--mode-coverage`) it will perform another step of processing and aggregating the profiling information created. Signed-off-by: Eliran Sinvani <eliransin@scylladb.com>
Front-end tests for nodetool
The tests in this directory exercise the nodetool client itself, mocking the API backend. This allows for testing all combinations of all supported options, and still keeping the tests quick.
The tests can be run against both the scylla-native nodetool (default), or the inherited, C*-based nodetool.
Run all tests against the scylla-native nodetool:
pytest --nodetool=scylla .
You can specify the path to the scylla binary with the --nodetool-path option. By default the tests will pick up the ScyllaDB executable, that is appropriate for the --mode option (defaults to dev).
Run all tests against the C* nodetool:
pytest --nodetool=cassandra .
Again, you can specify the path to the nodetool binary with --nodetool-path option. By default, <scylladb.git>/tools/java/bin/nodetool will be used.
When running the test against the java-nodeotol, you can specify the path to JMX with --jmx-path option. By default, <scylladb.git>/tools/jmx/scripts/scylla-jmx will be used.
If you add new tests, make sure to run all tess against both nodetool implementations, to avoid regressions. Note that CI/promotion will only run the tests against the scylla-native nodetool.