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What criteria do you use to decide whether execute a test on target or on host in a sprint? We have integration testing using a server for an embedded system project.

We are starting to learn and researching on how to apply integration testing and I do not know how exactly decide. What are the scenarios for each approach?

I suppose that when is needed to test interaction in a few no critical modules I can do it on host. But when they are critical, and the timing is important it is better to do it on target.

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It depends on:

  • the cost involved in uploading executable to target, controlling said target and downloading test outcomes. If the cost is high, the test is less frequently run.

  • the physical environment available on target but not on host and needed for test. For instance a target-specific chip to implement Wifi.

  • the availability of target itself. Sometimes hardware and software are designed in parallel. Or the actual target is too expensive to be left to random testers (like space critical computers).

  • Does your target need human interaction when you run your tests? I am supposing the automation would not be affected by the target interaction. – PySerial Killer Oct 27 '17 at 14:57
  • Some targets do, others don't. Sometimes a test goes really wrong and tester needs to manually reset the board. – mouviciel Oct 27 '17 at 15:09

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