Change Detector

The change detector is used to detect data format changes between versions of DefraDB.

How it works

The tests run using a source and target branch of DefraDB. Each branch is cloned into a temporary directory and dependencies are installed.

The test runner executes all of the common test packages available in the source and target tests directory.

For each test package execution the following steps occur:

• Create a temporary data directory. This is used to share data between source and target.
• Run the source version in setup only mode. This creates test fixtures in the shared data directory.
• Run the target version in change detector mode. This skips the setup and executes the tests using the shared data directory.