328be1ca7c
When writing to an integer column, Cassandra's fromJson() function allows not just JSON number constants, it also allows a string containing a number. Strings which do not hold a number fail with a FunctionFailure. In particular, the empty string "" is an invalid number, and should fail. The tests in this patch check this for two integer types: int and varint. Curiously, Cassandra and Scylla have opposite bugs here: Scylla fails to recognize the error for varint, while Cassandra fails to recognize the error for int. The tests in this patch reproduce these bugs. The tests demonstrating Scylla's bug are marked xfail, and the tests demonstrating Cassandra's bug is marked "cassandra_bug" (which means it is marked xfail only when running against Cassandra, but expected to succeed on Scylla. Refs #7944. Signed-off-by: Nadav Har'El <nyh@scylladb.com> Message-Id: <20210121133833.66075-1-nyh@scylladb.com>
Single-node funtional tests for Scylla's CQL features. Tests use the Python CQL library and the pytest frameworks. By using an actual CQL library for the tests, they can be run against any implementation of CQL - both Scylla and Cassandra. Most tests - except in rare cases - should pass on both, to ensure that Scylla is compatible with Cassandra in most features.
To run all tests against an already-running local installation of Scylla
or Cassandra on localhost, just run pytest. The "--host" and "--port"
can be used to give a different location for the running Scylla or Cassanra.
More conveniently, we have two scripts - "run" and "run-cassandra" - which do all the work necessary to start Scylla or Cassandra (respectively), and run the tests on them. The Scylla or Cassandra process is run in a temporary directory which is automatically deleted when the test ends.
Additional options can be passed to "pytest" or to "run" / "run-cassandra" to control which tests to run:
- To run all tests in a single file, do
pytest test_table.py. - To run a single specific test, do
pytest test_table.py::test_create_table_unsupported_names.
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)