COMPARE WITH PREVIOUS VERSION

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Pattern summary

Compare the current results with the results got by running the same tests in the previous version of the SUT

Category

Execution

Context

This pattern can be used when you have verified results for the previous release

Description

When it’s difficult to judge if the results are OK because of so many relationships, it may be much easier to just compare the current results with the results you got by running the same tests in the previous version of the SUT. If you know them to be OK then you don’t have to “understand” the contents, but just have to look for differences.

Implementation

First of all you must set-up the same initial conditions in the old and in the new version. Then run the tests on the old version and on the new one. Compare the results.

Potential problems

If you don’t have automated tests for the older version, run them manually

Issues addressed by this pattern

INEFFICIENT FAILURE ANALYSIS
HARD-TO-AUTOMATE RESULTS

Experiences

If you have used this pattern and would like to contribute your experience to the wiki, please go to Feedback to submit your experience or comment.

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