Generators ---------- Generators generate test cases, or instructions that control the flow of a test experiment. The goal is to cover a large test space by strategic permutations (*iterators*), walks along paths of a state machine (*sm-walker*), or by constructing scenarios for racing conditions (*racer*). The actual tests are performed based on tiny engines written in the test's native language. Those engines are fed with data that HWUT provides based on a formal description of the test space. The brief formal test descriptions are at the same time redundancy free expressions of a large test space. The brievity of these expressions support the transparancy of test descriptions. .. note:: When tests expand in larger space don't bother writting all by hand. With generators right in place a smart line hoses all dry land. The following three chapters describe the generator types: 'iterator', 'sm-walker', and 'racer'. They explain their principal ideas and provide some basic usage examples. .. toctree:: :maxdepth: 2 iterator.rst sm_walker.rst racer.rst