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Shubham Mishra
de42e341aa
# Description of Changes
Sets the layout for DST tests and adds a basic test for
`spacetimedb-engine` via `engine` mod.
### Engine Test:
- Generates random schemas with tables, indexes, unique constraints,
primary keys, and sequence columns.
- Drives randomized interactions: begin mutable tx, insert, delete,
commit, and replay.
- Uses an in-memory commitlog/durability implementation so replay can
simulate shutdown/reopen without
disk.
- Define properties, check them while processing interactions.
### Upnext:
1. Fault-injection in commitlog.
2. Multi connection support (async api call-ing is not needed for
`engine` test as we expect caller/module to also be single-threaded).
3. Increase API coverage of engine, especially schema migrations.
4. Add more properties like check for sequences.
5. simulated Snapshots.
Further more integration tests like `standalone`, `replication` can be
added by implementing
[`traits.rs`](https://github.com/clockworklabs/SpacetimeDB/pull/5424/changes#diff-c9a6dc71550c7ccdd23b18de8ec8777aa6e2a34af2ddad0a5040537c8dffd1e6)
similar to `engine`.
looking to get general feedback on overall design for test effectiveness
and maintainability.
# API and ABI breaking changes
NA
# Expected complexity level and risk
It's a test addition.