Tests written for the MQTT library.

The MQTT tests reside in the mqtt/test directory. They are divided into the following subdirectories:

access: Helper files that allow access to internal variables and functions of the MQTT library.
mock: Simulates network responses to MQTT packets; used for testing other libraries that depend on MQTT.
system: MQTT system and stress tests. These tests require a network connection. Stress tests may run for a long time, so they are not run unless the command line option -l is given to the test executable.
unit: MQTT unit tests. These tests do not require a network connection.

See Test Configuration for configuration settings that change the behavior of the tests.

The current MQTT tests use the Unity test framework. See Building and running the tests for a guide on running the tests.