| Name   | Interface break | Failed Testcases                                                                                                                 |
|--------|-----------------|----------------------------------------------------------------------------------------------------------------------------------|
| Wasili | no              | test_add_multiple_negative_numbers (tests.testStringcalculator.TestStringCalculator) ... negatives not allowed: -10,-20,-30 FAIL |
| Wasili | no              | test_add_single_negative_number (tests.testStringcalculator.TestStringCalculator) ... negatives not allowed: -2 FAIL             |