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scylladb/test/rest_api
Botond Dénes 542b2ed0de Merge 'Remove req_params facility from API' from Pavel Emelyanov
The class was introduced to facilitate path and query parameters parsing from requests, but in fact it's mostly dead code.

First, the class introduces the concept of  "mandatory" parameters which are seastar path params. If missing, the parameter validation throws, but in all cases where this option is used in scylla it's impossible to get empty path param -- if the parameter is missing seastar returns 404 (not found) before calling handler.

Second, the req_params::get<T>() doesn't work for anything but string argument (or types such that optional<T> can be implicitly casted to optional<sstring>). And it's in fact only used to get sstrings, so it compiles and works so far.

The remaining ability to parse bool from string is partially duplicated by the validate_bool() method. Using plain method to parse string to bool is less code than req_params introduce.

One (arguably) useful thing req_params do it validate the incoming request _not_ to contain unknown query parameters. However, quite a few endpoints use this, most of them just cherry-pick parameters they want and ignore the others. There's already a comprehensive description of accepted parameters for each endpoint in api-doc/ and req_params duplicate it. Good validation code should rely on api-doc/, not on its partial copy.

Having said that, this PR introduces validate_bool_x() helper to do req_params-like parsing of strings to bools, patches existing handlers to use existing parameters parsing facilities (such as validate_keyspace() and parse_table_infos()) and drops the req_params.

Closes scylladb/scylladb#24159

* github.com:scylladb/scylladb:
  api: Drop class req_params
  api: Stop using req_params in parse_scrub_options
  api: Stop using req_params in tasks::force_keyspace_compaction_async
  api: Stop using req_params in ss::force_keyspace_compaction
  api: Stop using req_params in ss::force_compaction
  api: Stop using req_params in cf::force_major_compaction
  api: Add validate_bool_x() helper
2025-05-27 14:29:05 +03:00
..
2024-11-06 16:48:36 +02:00

Tests for the Scylla REST API.

Tests use the requests library and the pytest frameworks (both are available from Linux distributions, or with "pip install").

To run all tests using test.py, just run ./test.py api/run.

To run all tests against an already-running local installation of Scylla, just run pytest. The "--host" and "--api-port" can be used to give a different location for the running Scylla.

More conveniently, we have a script - "run" - which does all the work necessary to start Scylla, and run the tests on it. The Scylla process is run in a temporary directory which is automatically deleted when the test ends.

"run" automatically picks the most recently compiled version of Scylla in build/*/scylla - but this choice of Scylla executable can be overridden with the SCYLLA environment variable.

Additional options can be passed to "pytest" or to "run" to control which tests to run:

  • To run all tests in a single file, do pytest test_system.py.
  • To run a single specific test, do pytest test_system.py::test_system_uptime_ms.
  • To run the same test or tests 100 times, add the --count=100 option. This is faster than running run 100 times, because Scylla is only run once, and also counts for you how many of the runs failed. For pytest to support the --count option, you need to install a pytest extension: pip install pytest-repeat

Additional useful pytest options, especially useful for debugging tests:

  • -v: show the names of each individual test running instead of just dots.
  • -s: show the full output of running tests (by default, pytest captures the test's output and only displays it if a test fails)