{
  "before": {
    "exit_code": 1,
    "output": "test_contract (test_app.LessonTest.test_contract) ... FAIL\n\n======================================================================\nFAIL: test_contract (test_app.LessonTest.test_contract)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/Users/lorin/my-clone/quickrout/public/downloads/tutorials-batch50b-20261014/practical/aider-undo-test-regression/before/test_app.py\", line 6, in test_contract\n    self.assertEqual(page_count(0,10),0)\n    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^\nAssertionError: 1 != 0\n\n----------------------------------------------------------------------\nRan 1 test in 0.000s\n\nFAILED (failures=1)\n"
  },
  "fixed": {
    "exit_code": 0,
    "output": "test_contract (test_app.LessonTest.test_contract) ... ok\n\n----------------------------------------------------------------------\nRan 1 test in 0.000s\n\nOK\n"
  }
}