Function remove_empty_table_succeeds

crates/engine/src/update.rs:902–932

()

    #[test]
    fn remove_empty_table_succeeds() -> anyhow::Result<()> {
        let auth_ctx = AuthCtx::for_testing();
        let stdb = TestDB::durable()?;

        let old = single_table_module();
        let new = empty_module();

        let mut tx = begin_mut_tx(&stdb);
        for def in old.tables() {
            create_table_from_def(&stdb, &mut tx, &old, def)?;
        }
        stdb.commit_tx(tx)?;

        let mut tx = begin_mut_tx(&stdb);
        let plan = ponder_migrate(&old, &new)?;
        let res = update_database(&stdb, &mut tx, auth_ctx, plan, &TestLogger)?;

        assert!(
            matches!(res, UpdateResult::RequiresClientDisconnect),
            "removing a table should disconnect clients"
        );
        assert!(stdb.table_id_from_name_mut(&tx, "droppable")?.is_none());
        assert!(
            tx.pending_schema_changes()
                .iter()
                .any(|c| matches!(c, PendingSchemaChange::TableRemoved(..))),
            "dropping a table should produce a TableRemoved pending schema change: {:?}",
            tx.pending_schema_changes()
        );
        Ok(())
    }

    #[test]
    fn remove_nonempty_table_fails() -> anyhow::Result<()> {