Does Liquibase support dry run?

I have asked the question on stackoverflow (and still do not have an answer):
http://stackoverflow.com/questions/21847482/does-liquibase-support-dry-run

We have couple of data schemas and we investigate the migration to Liquibase. (One of data schemas is already migrated to Liquibase).

Important question for us is if Liquibase supports dry run:

- We need to run database changes on all schemas without commit to ensure we do not have problems.
- In case of success all database changes run once again with commit.



Does Liquibase support control on transactions?

I want to open transaction before executing of Liquibase changelog, and to rollback the transaction after the changelog execution.
Of course, I need to verify the result of the execution.

Is it possible?