[
 {
  "name": "£1,000 at 5% growth and a 1% fee for two years: the drag (£21.93) exceeds the fees (£21.41)",
  "args": [
   {
    "minor": 100000,
    "currency": "GBP"
   },
   500,
   100,
   2
  ],
  "expect": {
   "valueWithoutFee": {
    "minor": 110250,
    "currency": "GBP"
   },
   "valueWithFee": {
    "minor": 108057,
    "currency": "GBP"
   },
   "drag": {
    "minor": 2193,
    "currency": "GBP"
   },
   "dragBasisPoints": 199,
   "feesPaid": {
    "minor": 2141,
    "currency": "GBP"
   },
   "schedule": [
    {
     "year": 1,
     "valueWithoutFee": {
      "minor": 105000,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 103950,
      "currency": "GBP"
     },
     "fee": {
      "minor": 1050,
      "currency": "GBP"
     }
    },
    {
     "year": 2,
     "valueWithoutFee": {
      "minor": 110250,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 108057,
      "currency": "GBP"
     },
     "fee": {
      "minor": 1091,
      "currency": "GBP"
     }
    }
   ]
  }
 },
 {
  "name": "with no growth the drag is exactly the fees",
  "args": [
   {
    "minor": 1000000,
    "currency": "GBP"
   },
   0,
   100,
   3
  ],
  "expect": {
   "valueWithoutFee": {
    "minor": 1000000,
    "currency": "GBP"
   },
   "valueWithFee": {
    "minor": 970299,
    "currency": "GBP"
   },
   "drag": {
    "minor": 29701,
    "currency": "GBP"
   },
   "dragBasisPoints": 297,
   "feesPaid": {
    "minor": 29701,
    "currency": "GBP"
   },
   "schedule": [
    {
     "year": 1,
     "valueWithoutFee": {
      "minor": 1000000,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 990000,
      "currency": "GBP"
     },
     "fee": {
      "minor": 10000,
      "currency": "GBP"
     }
    },
    {
     "year": 2,
     "valueWithoutFee": {
      "minor": 1000000,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 980100,
      "currency": "GBP"
     },
     "fee": {
      "minor": 9900,
      "currency": "GBP"
     }
    },
    {
     "year": 3,
     "valueWithoutFee": {
      "minor": 1000000,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 970299,
      "currency": "GBP"
     },
     "fee": {
      "minor": 9801,
      "currency": "GBP"
     }
    }
   ]
  }
 },
 {
  "name": "a falling market: 10% down a year with a 0.5% fee",
  "args": [
   {
    "minor": 100000,
    "currency": "GBP"
   },
   -1000,
   50,
   2
  ],
  "expect": {
   "valueWithoutFee": {
    "minor": 81000,
    "currency": "GBP"
   },
   "valueWithFee": {
    "minor": 80192,
    "currency": "GBP"
   },
   "drag": {
    "minor": 808,
    "currency": "GBP"
   },
   "dragBasisPoints": 100,
   "feesPaid": {
    "minor": 853,
    "currency": "GBP"
   },
   "schedule": [
    {
     "year": 1,
     "valueWithoutFee": {
      "minor": 90000,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 89550,
      "currency": "GBP"
     },
     "fee": {
      "minor": 450,
      "currency": "GBP"
     }
    },
    {
     "year": 2,
     "valueWithoutFee": {
      "minor": 81000,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 80192,
      "currency": "GBP"
     },
     "fee": {
      "minor": 403,
      "currency": "GBP"
     }
    }
   ]
  }
 },
 {
  "name": "no fee, no drag",
  "args": [
   {
    "minor": 100000,
    "currency": "GBP"
   },
   500,
   0,
   1
  ],
  "expect": {
   "valueWithoutFee": {
    "minor": 105000,
    "currency": "GBP"
   },
   "valueWithFee": {
    "minor": 105000,
    "currency": "GBP"
   },
   "drag": {
    "minor": 0,
    "currency": "GBP"
   },
   "dragBasisPoints": 0,
   "feesPaid": {
    "minor": 0,
    "currency": "GBP"
   },
   "schedule": [
    {
     "year": 1,
     "valueWithoutFee": {
      "minor": 105000,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 105000,
      "currency": "GBP"
     },
     "fee": {
      "minor": 0,
      "currency": "GBP"
     }
    }
   ]
  }
 },
 {
  "name": "zero years changes nothing",
  "args": [
   {
    "minor": 100000,
    "currency": "GBP"
   },
   500,
   100,
   0
  ],
  "expect": {
   "valueWithoutFee": {
    "minor": 100000,
    "currency": "GBP"
   },
   "valueWithFee": {
    "minor": 100000,
    "currency": "GBP"
   },
   "drag": {
    "minor": 0,
    "currency": "GBP"
   },
   "dragBasisPoints": 0,
   "feesPaid": {
    "minor": 0,
    "currency": "GBP"
   },
   "schedule": []
  }
 },
 {
  "name": "£10,000 at 5% over 10 years with a 0.75% platform fee",
  "args": [
   {
    "minor": 1000000,
    "currency": "GBP"
   },
   500,
   75,
   10
  ],
  "expect": {
   "valueWithoutFee": {
    "minor": 1628894,
    "currency": "GBP"
   },
   "valueWithFee": {
    "minor": 1510771,
    "currency": "GBP"
   },
   "drag": {
    "minor": 118123,
    "currency": "GBP"
   },
   "dragBasisPoints": 725,
   "feesPaid": {
    "minor": 95484,
    "currency": "GBP"
   },
   "schedule": [
    {
     "year": 1,
     "valueWithoutFee": {
      "minor": 1050000,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1042125,
      "currency": "GBP"
     },
     "fee": {
      "minor": 7875,
      "currency": "GBP"
     }
    },
    {
     "year": 2,
     "valueWithoutFee": {
      "minor": 1102500,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1086024,
      "currency": "GBP"
     },
     "fee": {
      "minor": 8207,
      "currency": "GBP"
     }
    },
    {
     "year": 3,
     "valueWithoutFee": {
      "minor": 1157625,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1131773,
      "currency": "GBP"
     },
     "fee": {
      "minor": 8552,
      "currency": "GBP"
     }
    },
    {
     "year": 4,
     "valueWithoutFee": {
      "minor": 1215506,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1179449,
      "currency": "GBP"
     },
     "fee": {
      "minor": 8913,
      "currency": "GBP"
     }
    },
    {
     "year": 5,
     "valueWithoutFee": {
      "minor": 1276281,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1229133,
      "currency": "GBP"
     },
     "fee": {
      "minor": 9288,
      "currency": "GBP"
     }
    },
    {
     "year": 6,
     "valueWithoutFee": {
      "minor": 1340095,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1280911,
      "currency": "GBP"
     },
     "fee": {
      "minor": 9679,
      "currency": "GBP"
     }
    },
    {
     "year": 7,
     "valueWithoutFee": {
      "minor": 1407100,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1334870,
      "currency": "GBP"
     },
     "fee": {
      "minor": 10087,
      "currency": "GBP"
     }
    },
    {
     "year": 8,
     "valueWithoutFee": {
      "minor": 1477455,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1391102,
      "currency": "GBP"
     },
     "fee": {
      "minor": 10512,
      "currency": "GBP"
     }
    },
    {
     "year": 9,
     "valueWithoutFee": {
      "minor": 1551328,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1449702,
      "currency": "GBP"
     },
     "fee": {
      "minor": 10955,
      "currency": "GBP"
     }
    },
    {
     "year": 10,
     "valueWithoutFee": {
      "minor": 1628894,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1510771,
      "currency": "GBP"
     },
     "fee": {
      "minor": 11416,
      "currency": "GBP"
     }
    }
   ]
  }
 },
 {
  "name": "£10,000 at 7% over 30 years: 1% costs far more than 30 x 1%",
  "args": [
   {
    "minor": 1000000,
    "currency": "GBP"
   },
   700,
   100,
   30
  ],
  "expect": {
   "valueWithoutFee": {
    "minor": 7612260,
    "currency": "GBP"
   },
   "valueWithFee": {
    "minor": 5630780,
    "currency": "GBP"
   },
   "drag": {
    "minor": 1981480,
    "currency": "GBP"
   },
   "dragBasisPoints": 2603,
   "feesPaid": {
    "minor": 835573,
    "currency": "GBP"
   },
   "schedule": [
    {
     "year": 1,
     "valueWithoutFee": {
      "minor": 1070000,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1059300,
      "currency": "GBP"
     },
     "fee": {
      "minor": 10700,
      "currency": "GBP"
     }
    },
    {
     "year": 2,
     "valueWithoutFee": {
      "minor": 1144900,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1122116,
      "currency": "GBP"
     },
     "fee": {
      "minor": 11335,
      "currency": "GBP"
     }
    },
    {
     "year": 3,
     "valueWithoutFee": {
      "minor": 1225043,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1188657,
      "currency": "GBP"
     },
     "fee": {
      "minor": 12007,
      "currency": "GBP"
     }
    },
    {
     "year": 4,
     "valueWithoutFee": {
      "minor": 1310796,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1259144,
      "currency": "GBP"
     },
     "fee": {
      "minor": 12719,
      "currency": "GBP"
     }
    },
    {
     "year": 5,
     "valueWithoutFee": {
      "minor": 1402552,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1333811,
      "currency": "GBP"
     },
     "fee": {
      "minor": 13473,
      "currency": "GBP"
     }
    },
    {
     "year": 6,
     "valueWithoutFee": {
      "minor": 1500731,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1412906,
      "currency": "GBP"
     },
     "fee": {
      "minor": 14272,
      "currency": "GBP"
     }
    },
    {
     "year": 7,
     "valueWithoutFee": {
      "minor": 1605782,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1496691,
      "currency": "GBP"
     },
     "fee": {
      "minor": 15118,
      "currency": "GBP"
     }
    },
    {
     "year": 8,
     "valueWithoutFee": {
      "minor": 1718187,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1585444,
      "currency": "GBP"
     },
     "fee": {
      "minor": 16015,
      "currency": "GBP"
     }
    },
    {
     "year": 9,
     "valueWithoutFee": {
      "minor": 1838460,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1679461,
      "currency": "GBP"
     },
     "fee": {
      "minor": 16964,
      "currency": "GBP"
     }
    },
    {
     "year": 10,
     "valueWithoutFee": {
      "minor": 1967152,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1779053,
      "currency": "GBP"
     },
     "fee": {
      "minor": 17970,
      "currency": "GBP"
     }
    },
    {
     "year": 11,
     "valueWithoutFee": {
      "minor": 2104853,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1884551,
      "currency": "GBP"
     },
     "fee": {
      "minor": 19036,
      "currency": "GBP"
     }
    },
    {
     "year": 12,
     "valueWithoutFee": {
      "minor": 2252193,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 1996305,
      "currency": "GBP"
     },
     "fee": {
      "minor": 20165,
      "currency": "GBP"
     }
    },
    {
     "year": 13,
     "valueWithoutFee": {
      "minor": 2409847,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 2114686,
      "currency": "GBP"
     },
     "fee": {
      "minor": 21360,
      "currency": "GBP"
     }
    },
    {
     "year": 14,
     "valueWithoutFee": {
      "minor": 2578536,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 2240087,
      "currency": "GBP"
     },
     "fee": {
      "minor": 22627,
      "currency": "GBP"
     }
    },
    {
     "year": 15,
     "valueWithoutFee": {
      "minor": 2759034,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 2372924,
      "currency": "GBP"
     },
     "fee": {
      "minor": 23969,
      "currency": "GBP"
     }
    },
    {
     "year": 16,
     "valueWithoutFee": {
      "minor": 2952166,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 2513639,
      "currency": "GBP"
     },
     "fee": {
      "minor": 25390,
      "currency": "GBP"
     }
    },
    {
     "year": 17,
     "valueWithoutFee": {
      "minor": 3158818,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 2662698,
      "currency": "GBP"
     },
     "fee": {
      "minor": 26896,
      "currency": "GBP"
     }
    },
    {
     "year": 18,
     "valueWithoutFee": {
      "minor": 3379935,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 2820596,
      "currency": "GBP"
     },
     "fee": {
      "minor": 28491,
      "currency": "GBP"
     }
    },
    {
     "year": 19,
     "valueWithoutFee": {
      "minor": 3616530,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 2987858,
      "currency": "GBP"
     },
     "fee": {
      "minor": 30180,
      "currency": "GBP"
     }
    },
    {
     "year": 20,
     "valueWithoutFee": {
      "minor": 3869687,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 3165038,
      "currency": "GBP"
     },
     "fee": {
      "minor": 31970,
      "currency": "GBP"
     }
    },
    {
     "year": 21,
     "valueWithoutFee": {
      "minor": 4140565,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 3352725,
      "currency": "GBP"
     },
     "fee": {
      "minor": 33866,
      "currency": "GBP"
     }
    },
    {
     "year": 22,
     "valueWithoutFee": {
      "minor": 4430405,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 3551542,
      "currency": "GBP"
     },
     "fee": {
      "minor": 35874,
      "currency": "GBP"
     }
    },
    {
     "year": 23,
     "valueWithoutFee": {
      "minor": 4740533,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 3762148,
      "currency": "GBP"
     },
     "fee": {
      "minor": 38002,
      "currency": "GBP"
     }
    },
    {
     "year": 24,
     "valueWithoutFee": {
      "minor": 5072370,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 3985243,
      "currency": "GBP"
     },
     "fee": {
      "minor": 40255,
      "currency": "GBP"
     }
    },
    {
     "year": 25,
     "valueWithoutFee": {
      "minor": 5427436,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 4221568,
      "currency": "GBP"
     },
     "fee": {
      "minor": 42642,
      "currency": "GBP"
     }
    },
    {
     "year": 26,
     "valueWithoutFee": {
      "minor": 5807357,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 4471907,
      "currency": "GBP"
     },
     "fee": {
      "minor": 45171,
      "currency": "GBP"
     }
    },
    {
     "year": 27,
     "valueWithoutFee": {
      "minor": 6213872,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 4737091,
      "currency": "GBP"
     },
     "fee": {
      "minor": 47849,
      "currency": "GBP"
     }
    },
    {
     "year": 28,
     "valueWithoutFee": {
      "minor": 6648843,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 5018000,
      "currency": "GBP"
     },
     "fee": {
      "minor": 50687,
      "currency": "GBP"
     }
    },
    {
     "year": 29,
     "valueWithoutFee": {
      "minor": 7114262,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 5315567,
      "currency": "GBP"
     },
     "fee": {
      "minor": 53693,
      "currency": "GBP"
     }
    },
    {
     "year": 30,
     "valueWithoutFee": {
      "minor": 7612260,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 5630780,
      "currency": "GBP"
     },
     "fee": {
      "minor": 56877,
      "currency": "GBP"
     }
    }
   ]
  }
 },
 {
  "name": "a total loss in year one leaves nothing either way",
  "args": [
   {
    "minor": 50000,
    "currency": "GBP"
   },
   -10000,
   100,
   2
  ],
  "expect": {
   "valueWithoutFee": {
    "minor": 0,
    "currency": "GBP"
   },
   "valueWithFee": {
    "minor": 0,
    "currency": "GBP"
   },
   "drag": {
    "minor": 0,
    "currency": "GBP"
   },
   "dragBasisPoints": 0,
   "feesPaid": {
    "minor": 0,
    "currency": "GBP"
   },
   "schedule": [
    {
     "year": 1,
     "valueWithoutFee": {
      "minor": 0,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 0,
      "currency": "GBP"
     },
     "fee": {
      "minor": 0,
      "currency": "GBP"
     }
    },
    {
     "year": 2,
     "valueWithoutFee": {
      "minor": 0,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 0,
      "currency": "GBP"
     },
     "fee": {
      "minor": 0,
      "currency": "GBP"
     }
    }
   ]
  }
 },
 {
  "name": "a penny grows by half-penny roundings, year by year",
  "args": [
   {
    "minor": 1,
    "currency": "GBP"
   },
   5000,
   0,
   3
  ],
  "expect": {
   "valueWithoutFee": {
    "minor": 5,
    "currency": "GBP"
   },
   "valueWithFee": {
    "minor": 5,
    "currency": "GBP"
   },
   "drag": {
    "minor": 0,
    "currency": "GBP"
   },
   "dragBasisPoints": 0,
   "feesPaid": {
    "minor": 0,
    "currency": "GBP"
   },
   "schedule": [
    {
     "year": 1,
     "valueWithoutFee": {
      "minor": 2,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 2,
      "currency": "GBP"
     },
     "fee": {
      "minor": 0,
      "currency": "GBP"
     }
    },
    {
     "year": 2,
     "valueWithoutFee": {
      "minor": 3,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 3,
      "currency": "GBP"
     },
     "fee": {
      "minor": 0,
      "currency": "GBP"
     }
    },
    {
     "year": 3,
     "valueWithoutFee": {
      "minor": 5,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 5,
      "currency": "GBP"
     },
     "fee": {
      "minor": 0,
      "currency": "GBP"
     }
    }
   ]
  }
 },
 {
  "name": "a 100% fee takes everything after the first year",
  "args": [
   {
    "minor": 10000,
    "currency": "GBP"
   },
   1000,
   10000,
   1
  ],
  "expect": {
   "valueWithoutFee": {
    "minor": 11000,
    "currency": "GBP"
   },
   "valueWithFee": {
    "minor": 0,
    "currency": "GBP"
   },
   "drag": {
    "minor": 11000,
    "currency": "GBP"
   },
   "dragBasisPoints": 10000,
   "feesPaid": {
    "minor": 11000,
    "currency": "GBP"
   },
   "schedule": [
    {
     "year": 1,
     "valueWithoutFee": {
      "minor": 11000,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 0,
      "currency": "GBP"
     },
     "fee": {
      "minor": 11000,
      "currency": "GBP"
     }
    }
   ]
  }
 },
 {
  "name": "nothing invested",
  "args": [
   {
    "minor": 0,
    "currency": "GBP"
   },
   500,
   100,
   2
  ],
  "expect": {
   "valueWithoutFee": {
    "minor": 0,
    "currency": "GBP"
   },
   "valueWithFee": {
    "minor": 0,
    "currency": "GBP"
   },
   "drag": {
    "minor": 0,
    "currency": "GBP"
   },
   "dragBasisPoints": 0,
   "feesPaid": {
    "minor": 0,
    "currency": "GBP"
   },
   "schedule": [
    {
     "year": 1,
     "valueWithoutFee": {
      "minor": 0,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 0,
      "currency": "GBP"
     },
     "fee": {
      "minor": 0,
      "currency": "GBP"
     }
    },
    {
     "year": 2,
     "valueWithoutFee": {
      "minor": 0,
      "currency": "GBP"
     },
     "valueWithFee": {
      "minor": 0,
      "currency": "GBP"
     },
     "fee": {
      "minor": 0,
      "currency": "GBP"
     }
    }
   ]
  }
 },
 {
  "name": "negative start value is an error",
  "args": [
   {
    "minor": -1,
    "currency": "GBP"
   },
   500,
   100,
   1
  ],
  "expectError": "startValue must be whole minor units, 0 or more"
 },
 {
  "name": "fractional minor units are an error",
  "args": [
   {
    "minor": 10.5,
    "currency": "GBP"
   },
   500,
   100,
   1
  ],
  "expectError": "startValue must be whole minor units, 0 or more"
 },
 {
  "name": "growth below -100% is an error",
  "args": [
   {
    "minor": 100,
    "currency": "GBP"
   },
   -10001,
   100,
   1
  ],
  "expectError": "annualGrowthBasisPoints must be a whole number, -10000 or more"
 },
 {
  "name": "a fractional growth rate is an error",
  "args": [
   {
    "minor": 100,
    "currency": "GBP"
   },
   512.5,
   100,
   1
  ],
  "expectError": "annualGrowthBasisPoints must be a whole number, -10000 or more"
 },
 {
  "name": "a negative fee is an error",
  "args": [
   {
    "minor": 100,
    "currency": "GBP"
   },
   500,
   -1,
   1
  ],
  "expectError": "annualFeeBasisPoints must be a whole number from 0 to 10000"
 },
 {
  "name": "a fee over 100% is an error",
  "args": [
   {
    "minor": 100,
    "currency": "GBP"
   },
   500,
   10001,
   1
  ],
  "expectError": "annualFeeBasisPoints must be a whole number from 0 to 10000"
 },
 {
  "name": "101 years is an error",
  "args": [
   {
    "minor": 100,
    "currency": "GBP"
   },
   500,
   100,
   101
  ],
  "expectError": "years must be a whole number from 0 to 100"
 },
 {
  "name": "negative years are an error",
  "args": [
   {
    "minor": 100,
    "currency": "GBP"
   },
   500,
   100,
   -1
  ],
  "expectError": "years must be a whole number from 0 to 100"
 },
 {
  "name": "fractional years are an error",
  "args": [
   {
    "minor": 100,
    "currency": "GBP"
   },
   500,
   100,
   2.5
  ],
  "expectError": "years must be a whole number from 0 to 100"
 }
]