Abstract: Methods and apparatus for testing a telecommunications management network (TMN) agent are disclosed. Disclosed apparatus for implementing the methods comprises one or more computer readable storage mediums, and computer readable program code stored in the one or more computer readable storage mediums. A first portion of the computer readable program code comprises code for building an internal containment tree which mirrors the run-time containment tree of a TMN agent, wherein the internal containment tree comprises a number of nodes corresponding to managed objects in a run-time containment tree. A second portion of the code comprises code for generating tests for each node of the internal containment tree. A third portion of the code comprises code for executing the generated tests.