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Guidelines for developing the Gabeldorsche (GD) stack
Gabeldorsche (GD) was built with test driven development in mind. Three types of tests are used in ensuring Gabeldorsche stack's stability, correctness and free from regression.
If you are verifying something is glued or hooked up correctly inside the stack, use a unit test.
If you are verifying correct behavior (especially interop problems) DO NOT write a unit test as this not a good use of your time. Write a cert test instead so it applies to any stack.