The file test/alternator/test_transact.py accidentally had two tests
with the same name, test_transact_get_items_projection_expression.
This means the first of the two tests was ignored and never run.
This patch renames the second of the two to a more appropriate
(and unique...) name.
I verified that after this change the number of tests in this file
grows by one, and that still all tests pass on DynamoDB and fail
(as expected by xfail) on Alternator.
Signed-off-by: Nadav Har'El <nyh@scylladb.com>
Closesscylladb/scylladb#27702
copilot noticed in that in in many of Alternator tests, we have some
unnecessary assignments. For example, in a few places, we use the idiom:
with pytest.raises(...):
ret = ...
The "ret=" part is unnecessary, as this test expects the statement to
fail (hence the raises()), and ret is never assigned. The assignment
was only there because we copied this statement from another place in
the test, which does expect the statement to pass and wants to validate
the returned value.
So we should just drop the "ret=" from these tests.
Another common occurance is that we used the idiom
response = table.do_something()
Without checking the response and no intention to check it (either we
know it will work, or we just want to check it doesn't throw). So we
can drop the "response=" here too.
All of the unused variables in this patch were discovered by Copilot,
but I reviewed each of them carefully myself and prepared this patch.
Signed-off-by: Nadav Har'El <nyh@scylladb.com>
This patch adds extensive functional tests for the DynamoDB multi-item
transactions feature - the TransactWriteItems and TransactGetItems
requests. We add 43 test functions, spanning more than 1000 lines of code,
covering the different parameters and corner cases of these requests.
Because we don't support the transaction feature in Alternator yet (this
is issue #5064), all of these tests fail on Alternator but all of them
were tested to pass on DynamoDB. So all new tests are marked "xfail".
These tests will be handy for whoever will implement this feature as
an acceptance test, and can also be useful for whoever will just want to
understand this feature better - the tests are short and simple and
heavily commented.
Note that these tests only check the correct functionality of individual
calls of these requests - these tests cannot and do not check the
consistency or isolation guarantees of concurrent invocations of
several requests. Such tests would require a different test framework,
such as the one requested in issue #6350, and are therefore not part of
this patch.
Note that this patch includes ONLY tests, and does not mean that an
implementation of the feature will soon follow. In fact, nobody is
currently working on implementing this feature.
Signed-off-by: Nadav Har'El <nyh@scylladb.com>
Closesscylladb/scylladb#22239
