crap-score
CRAP Score Analysis
Calculate CRAP (Change Risk Anti-Patterns) scores for .NET methods to identify code that is both complex and undertested.
Background
The CRAP score combines cyclomatic complexity and code coverage into a single metric:
$$\text{CRAP}(m) = \text{comp}(m)^2 \times (1 - \text{cov}(m))^3 + \text{comp}(m)$$
Where:
- $\text{comp}(m)$ = cyclomatic complexity of method $m$
- $\text{cov}(m)$ = code coverage ratio (0.0 to 1.0) of method $m$
| CRAP Score | Risk Level | Interpretation |
|---|---|---|
| < 5 | Low | Simple and well-tested |
| 5-15 | Moderate | Acceptable for most code |
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