| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 41 of 41 | 0% | 2 of 2 | 0% | 5 | 5 | 10 | 10 | 4 | 4 |
| reduce(TestMapCollection.KeyWritable, Iterable, Reducer.Context) | | 0% | | 0% | 2 | 2 | 4 | 4 | 1 | 1 |
| setup(Reducer.Context) | | 0% | n/a | 1 | 1 | 3 | 3 | 1 | 1 | |
| cleanup(Reducer.Context) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| TestMapCollection.SpillReducer() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 |