| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 217 of 501 | 56% | 40 of 62 | 35% | 28 | 41 | 47 | 103 | 3 | 10 |
| loadMore(int) | | 4% | | 4% | 11 | 12 | 27 | 29 | 0 | 1 |
| read(char[], int, int) | | 74% | | 53% | 10 | 15 | 12 | 40 | 0 | 1 |
| reportBounds(char[], int, int) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| read() | | 0% | | 0% | 3 | 3 | 5 | 5 | 1 | 1 |
| reportStrangeStream() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| UTF32Reader(IOContext, InputStream, byte[], int, int, boolean) | | 100% | | 100% | 0 | 2 | 0 | 10 | 0 | 1 |
| reportInvalid(int, int, String) | | 100% | n/a | 0 | 1 | 0 | 2 | 0 | 1 | |
| reportUnexpectedEOF(int, int) | | 100% | n/a | 0 | 1 | 0 | 2 | 0 | 1 | |
| freeBuffers() | | 100% | | 50% | 2 | 3 | 0 | 6 | 0 | 1 |
| close() | | 100% | | 100% | 0 | 2 | 0 | 6 | 0 | 1 |