Mock data is useful at various points in development. It can be used with an HTTP test client, to simulate the responses a user makes at the front end. It can be inserted directly into the database, to test the database access layer. It can replace the database layer, and be provided directly to the business logic implementation.
Datamixer generates mock data values for various datatypes, including integer, floating precision, datetime, and string. It can generate complex sequences, based on functions and permutations of the basic data series.
To get started, first download and install a distribution. After installation, Use Ant to run an example in the examples directory.
The Datamixer project is hosted here, on SourceForge.