How can we ensure that the test logic actually does what it's supposed to? OTX, as a programming language, must be tested – just like any other code. The test tests the test – it sounds crazy, but it's necessary: because wherever test logic is implemented, verification is also needed! Contents Introduction Fundamentals of software testing What are unit tests? How do you write a unit test? Tool support Conclusion Introduction To ensure that the test logic programmed in OTX b