what is the best way to measure code coverage against a single spec with ruby? -

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I usually do rake spec: rcov , but it's all about code coverage Measures.

I would like a way to measure code coverage from a sample so that it can be ensured that the sample of each model is testing the full model rather than relying on side effects in other tests.

Any thoughts? 

  RCOV test / *. Rb   
 I can not understand your question properly, but if you are trying to visualize just one part of your code, then it should command.  
 I read about it here:

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