Tests written for the BLE library.

The BLE tests reside in the ??? directory. They are divided into the following subdirectories:

• system: BLE system and stress tests. Stress tests may run for a long time, so they are not run unless the -l option is passed to the test executable.
• unit: BLE unit tests. These tests do not require a network connection.

The current BLE tests use the Unity test framework.