| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 561 of 561 | 0% | 18 of 18 | 0% | 20 | 20 | 71 | 71 | 11 | 11 |
| recognizesOtherOperatingSystemFamilies() | | 0% | | 0% | 2 | 2 | 5 | 5 | 1 | 1 |
| usesUnknownWhenNoFamilyMatches() | | 0% | | 0% | 2 | 2 | 20 | 20 | 1 | 1 |
| distinguishesWindowsNtFromWindows9x() | | 0% | | 0% | 3 | 3 | 12 | 12 | 1 | 1 |
| exposesCurrentSystemInformation() | | 0% | | 0% | 3 | 3 | 10 | 10 | 1 | 1 |
| preservesUnixAndDosSeparatorRules() | | 0% | | 0% | 4 | 4 | 9 | 9 | 1 | 1 |
| preservesSubstringFallbackAndCaseHandling() | | 0% | n/a | 1 | 1 | 6 | 6 | 1 | 1 | |
| recognizesMacAndDarwin() | | 0% | n/a | 1 | 1 | 5 | 5 | 1 | 1 | |
| rejectsNullFamilyOrOsName() | | 0% | n/a | 1 | 1 | 3 | 3 | 1 | 1 | |
| lambda$rejectsNullFamilyOrOsName$1() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| lambda$rejectsNullFamilyOrOsName$0() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| OsTest() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 |