| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 8 of 13 | 38% | 0 of 0 | n/a | 1 | 3 | 1 | 3 | 1 | 3 |
| registered() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| NullMetricsFactory.NullHistogramFactory() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 | |
| createHistogram(Class, String) | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |