Added tests for covering initialization error handling cases like; NULL pointer, invalid GPIO count etc. This changed implied removing the `relay_chn_create` from the Unity's `setUp` function and place it in each testcase. Refs #1050, #1030.
Added tests for covering initialization error handling cases like; NULL pointer, invalid GPIO count etc. This changed implied removing the `relay_chn_create` from the Unity's `setUp` function and place it in each testcase. Refs #1050, #1030.