2e031f2d8e
This patch adds a test (in the topology test framework) for issue #16313 - the bug where Alternator LSI must use synchronous view updates but didn't. This test fails with high probability (around 50%) before the previous patch, which fixed this bug - and passes consistently after the patch (I ran it 100 times and it didn't fail even once). This is the first test in the topology framework that uses the DynamoDB API and not CQL. This required a couple of tiny convenience functions, which are introduced in the only test file that uses them - but if we want we can later move them out to a library file. Unfortunately, the standard AWS SDK for Python - boto3 - is *not* asynchronous, so this test is also not really asynchronous, and will block the event loop while making requests to Alternator. However, for now it doesn't matter (we do NOT run multiple tests in the same event loop), and if it ever matters, I mentioned a couple of options what we can do in a comment. Because this test uses a 10-node cluster, it is skipped in debug-mode runs. In a later patch we will replace it by a more efficent - and more reliable - 2-node test. Refs #16313 Signed-off-by: Nadav Har'El <nyh@scylladb.com>
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++ cql-pytest - 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.