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If you run tests on parallel jobs (using CI parallelisation) you need to merge CodeClimate reports from each parallel job (CI node) into a unified report.
When someone post invalid JSON payload to your Ruby on Rails URL endpoint then Rails crashes with 500 error. We could render nice message instead of the error. For instance if you have public API you may want to show reason of the error to explain to your API client why the request failed.
Knapsack Pro tracks your CI builds and how long each test files took to run on one of parallel CI nodes. Thanks to that Knapsack Pro can prepare the optimal test suite split for your future test suite runs on your CI provider.
If you want to help with this documentation you may want to take a look at the repository