| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 190 of 260 | 26% | 18 of 20 | 10% | 19 | 25 | 52 | 68 | 9 | 15 |
| CharArrayWriter(Reader) | | 0% | | 0% | 3 | 3 | 10 | 10 | 1 | 1 |
| CharArrayWriter(Reader, int) | | 0% | | 0% | 3 | 3 | 11 | 11 | 1 | 1 |
| write(Reader, int) | | 0% | | 0% | 3 | 3 | 9 | 9 | 1 | 1 |
| ensureRoom(int) | | 18% | | 25% | 2 | 3 | 7 | 9 | 0 | 1 |
| toCharArray() | | 0% | n/a | 1 | 1 | 3 | 3 | 1 | 1 | |
| setSize(int) | | 0% | | 0% | 2 | 2 | 4 | 4 | 1 | 1 |
| CharArrayWriter(int) | | 0% | n/a | 1 | 1 | 3 | 3 | 1 | 1 | |
| write(int) | | 76% | | 50% | 1 | 2 | 1 | 4 | 0 | 1 |
| reset() | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| getBuffer() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| size() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| write(String, int, int) | | 100% | n/a | 0 | 1 | 0 | 4 | 0 | 1 | |
| toString() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 | |
| reset(char[]) | | 100% | n/a | 0 | 1 | 0 | 3 | 0 | 1 | |
| CharArrayWriter(char[]) | | 100% | n/a | 0 | 1 | 0 | 3 | 0 | 1 |