| Name | Lines of code | Maintainability | Test coverage |
| tests/QueryMakerTest.php | 507 | D 2 days | |
| tests/RegistryTest.php | 68 | A 0 mins | |
| tests/RouterTest.php | 287 | D 1 day | |
| tests/StringUtilityTest.php | 528 | F 1 wk | |
| tests/UserAuthenticationTest.php | 79 | A 1 hr | |
| tests/ValidatorRuleTest.php | 29 | A 0 mins | |
| tests/ValidatorTest.php | 929 | F 6 days |