The basic foundation of internal module testing starts from the bottom layer and with the block manager this means creating unit tests. This ticket is to aims to unit test the relevant block_addr functions used for the block manager module. This ticket will create unit tests for:

• __wt_block_addr_unpack
• __wt_block_addr_pack

The definition of done, will be thoroughly testing the pack and unpack functions, with clear test cases working with hopefully the goal of increasing code coverage.