{
  "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-lint-test-loop/before/test_app.py\", line 6, in test_contract\n    self.assertEqual(normalize('  SKU-A '), 'sku-a')\n    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\nAssertionError: '  sku-a ' != 'sku-a'\n-   sku-a \n? --     -\n+ sku-a\n\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) ... /Users/lorin/my-clone/quickrout/public/downloads/tutorials-batch50b-20261014/practical/aider-lint-test-loop/fixed/test_app.py:9: ResourceWarning: unclosed file <_io.TextIOWrapper name='app.py' mode='r' encoding='utf-8'>\n  tree = ast.parse(open('app.py', encoding='utf-8').read())\nResourceWarning: Enable tracemalloc to get the object allocation traceback\nok\n\n----------------------------------------------------------------------\nRan 1 test in 0.004s\n\nOK\n"
  }
}