{
  "id": "python/unittest-mock-assert-call-order",
  "signature": "AssertionError: Expected 'mock.method' to have been called once. Called 2 times.",
  "signature_zh": "断言错误：期望 'mock.method' 被调用一次。实际被调用 2 次。",
  "regex": "AssertionError:\\ Expected\\ 'mock\\.method'\\ to\\ have\\ been\\ called\\ once\\.\\ Called\\ 2\\ times\\.",
  "domain": "python",
  "category": "runtime_error",
  "subcategory": null,
  "root_cause": "使用 assert_called_once 但 mock 方法被多次调用，可能由于代码逻辑或测试重复执行。",
  "root_cause_type": "generic",
  "root_cause_zh": "使用 assert_called_once 但 mock 方法被多次调用，可能由于代码逻辑或测试重复执行。",
  "versions": [
    {
      "version": "3.9",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "3.10",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "可能改变被测代码行为。",
      "fail_rate": 0.5,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "不验证调用次数，可能掩盖问题。",
      "fail_rate": 0.6,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.9,
      "how": "检查最后一次调用参数，`mock.method.assert_called_with(参数)`。",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.95,
      "how": "`assert mock.method.call_count == 1` 更精确。",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.88,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2025-04-01",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}