Add some tests that test whether `pk indexes` are generated correctly.
When a driver asks to prepare a statement, Scylla's response includes
the metadata for this prepared statement.
In this metadata there's `pk indexes`, which tells the driver which
bind variable values it should use to calculate the partition token.
For a query like:
SELECT * FROM t WHERE p2 = ? AND p1 = ? AND p3 = ?
The correct pk_indexes would be [1, 0, 2], which means
"To calculate the token calculate Hash(bind_vars[1] | bind_vars[0] | bind_vars[2])".
More information is available in the specification:
1959502d8b/doc/native_protocol_v4.spec (L699-L707)
Two tests are marked as xfail because of #15374 - Scylla doesn't correctly handle using the same
named variable in multiple places. This will be fixed soon.
I couldn't find a good place for these tests, so I created a new file - test_prepare.py.
Signed-off-by: Jan Ciolek <jan.ciolek@scylladb.com>
f3ecd279f2