{
  "_doc": "Mock fixture for Tester Agent (todo-be unit). sequence[0]=fail (first run after implement) with hint pointing at missing 400 branch; sequence[1]=pass (after Coder retry).",
  "sequence": [
    {
      "_variant": "fail",
      "chunks": [
        "## step 0 · 读 spec.json + contract.json + code/server.js\n",
        "\n## step 1-2 · 写 tests/todo-be.spec.js,覆盖 3 acceptance + 2 status code\n",
        "\n## step 3 · 跑 vitest\n",
        "1 of 3 failed\n",
        "\n## step 4 · parse_vitest + hint\n",
        "失败: POST /todos with empty body 返 201, 期望 400\n",
        "\n## step 5 · bug_open\n"
      ],
      "result": "mock-ok devloop-tester[fail] todo-be: 2/3 pass · failure has hint",
      "files": [
        {
          "path": "units/todo-be/tests/todo-be.spec.js",
          "content": "// mock tests (P2 fixture)\nimport request from 'supertest';\nimport { describe, it, expect } from 'vitest';\nimport app from '../code/server.js';\ndescribe('todo-be', () => {\n  it('POST /todos with text returns 201', async () => {\n    const r = await request(app).post('/todos').send({ text: 'buy milk' });\n    expect(r.status).toBe(201);\n  });\n  it('GET /todos returns array', async () => {\n    const r = await request(app).get('/todos');\n    expect(r.status).toBe(200);\n    expect(Array.isArray(r.body)).toBe(true);\n  });\n  it('POST /todos with empty body returns 400', async () => {\n    const r = await request(app).post('/todos').send({});\n    expect(r.status).toBe(400);\n  });\n});\n"
        },
        {
          "path": "units/todo-be/runs/run-mock-attempt-1/result.json",
          "content": "{\n  \"ok\": false,\n  \"crashed\": false,\n  \"unit_id\": \"todo-be\",\n  \"run_id\": \"run-mock-attempt-1\",\n  \"summary\": { \"total\": 3, \"passed\": 2, \"failed\": 1, \"skipped\": 0 },\n  \"failures\": [\n    {\n      \"test\": \"POST /todos with empty body returns 400\",\n      \"expected\": 400,\n      \"got\": 201,\n      \"stack\": \"AssertionError: expected 201 to be 400\",\n      \"hint\": \"req.body.text 未校验;在 POST handler 入口加存在性判断,空 body 返 400 而不是 201\"\n    }\n  ],\n  \"duration_ms\": 12\n}\n"
        }
      ]
    },
    {
      "_variant": "pass",
      "chunks": [
        "## step 0 · 读 spec.json + contract.json + code/server.js (已被 Coder 改动)\n",
        "\n## step 1 · 跑现有 tests (复用上一轮 spec)\n",
        "\n## step 2 · parse_vitest\n",
        "3 of 3 passed\n",
        "\n## step 3 · bug_transition fixed\n"
      ],
      "result": "mock-ok devloop-tester[pass] todo-be: 3/3 pass · L1 green",
      "files": [
        {
          "path": "units/todo-be/runs/run-mock-attempt-2/result.json",
          "content": "{\n  \"ok\": true,\n  \"crashed\": false,\n  \"unit_id\": \"todo-be\",\n  \"run_id\": \"run-mock-attempt-2\",\n  \"summary\": { \"total\": 3, \"passed\": 3, \"failed\": 0, \"skipped\": 0 },\n  \"failures\": [],\n  \"duration_ms\": 11\n}\n"
        }
      ]
    }
  ]
}