gistfile1.cs

// <TrendMetric Name="Max C.R.A.P Score" />
// Change Risk Analyzer and Predictor (i.e. CRAP) code metric
// This code metric helps in pinpointing overly complex and untested code.
// Reference: http://www.artima.com/weblogs/viewpost.jsp?thread=215899
// Formula:   CRAP(m) = comp(m)^2 * (1 - cov(m)/100)^3 + comp(m)

(from m in JustMyCode.Methods

// Don't match too short methods
where m.NbLinesOfCode > 10

let CC = m.CyclomaticComplexity
let uncov = (100 - m.PercentageCoverage) / 100f
let CRAP = (CC * CC * uncov * uncov * uncov) + CC
where CRAP != null && CRAP > 30 select CRAP)
.Max(CRAP => CRAP)

// To list methods with highest C.R.A.P scores, please refer to the default rule:
//   Test and Code Coverage > C.R.A.P method code metric