PHPUnit and C.R.A.P index?

The minimum CRAP score is one not zero. This is because the algorithm for CRAP is CRAP(m) = comp(m)^2 * (1 – cov(m)/100)^3 + comp(m) and the minimum cyclomatic complexity (comp) value for a function is one. So the problem is not in phpunit, but whatever is flagging a CRAP of 1 as a problem In general, you want to set your CRAP threshold somewhere around 5, anywhere lower and you may as well just use a simple code coverage metric (and shoot for 100%) since the complexity factor barely weighs in.

A CRAP of >= 30 means that no amount of testing can make your method not crappy Cyclomatic complexity can generally (but there is more than one definition) be hand calculated as: add 1 point for the function call add 1 point for every loop add 1 point for every branch.

The minimum CRAP score is one not zero. This is because the algorithm for CRAP is CRAP(m) = comp(m)^2 * (1 – cov(m)/100)^3 + comp(m) and the minimum cyclomatic complexity (comp) value for a function is one. So the problem is not in phpunit, but whatever is flagging a CRAP of 1 as a problem.In general, you want to set your CRAP threshold somewhere around 5, anywhere lower and you may as well just use a simple code coverage metric (and shoot for 100%) since the complexity factor barely weighs in.

A CRAP of >= 30 means that no amount of testing can make your method not crappy. Cyclomatic complexity can generally (but there is more than one definition) be hand calculated as: add 1 point for the function call add 1 point for every loop add 1 point for every branch.

You are right, the minimum is 1 ... seems to be a bug of php_codebrowser which highlight those lines even if they are fine. See github. Com/mayflowergmbh/PHP_CodeBrowser/issues/50 – RageZ Oct 6 at 9:12.

Generally the threshold for warnings is set much higher than 1 (perhaps around 30). There is a good SO post here that shows how the number is calculated. There seems to be a few hardcoded values in my phpunit setup for CRAP of 30.

According to Alberto Savoia, the creator of the CRAP index: "The C.R.A.P. (Change Risk Analysis and Predictions) index is designed to analyze and predict the amount of effort, pain, and time required to maintain an existing body of code. " The minimum CRAP number will be the cyclomatic complexity for code with 100% coverage. The idea being that changes to complex code are more likely to create problems than changes to simple code.

Actually it's a notice but rather annoying to have a notice on every single getter and setter – RageZ Oct 6 at 9:13.

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