为 MongoDB 数据库播种的文档的自动随机测试数据生成

Question

我正在使用 JSON 生成器 https://next.json-generator.com 为我的 MongoDB 数据库播种。我发现无法从预定义组中生成一组随机颜色（从一到六）。

我已成功生成除颜色之外的所有其他属性值。我需要 availableColors 键从预定义的六种颜色中生成随机可变数量的颜色："blue"、"brown"、"green"、"white"、"yellow", "gray".

这里是 URL 在线生成器，可以实时编辑它：https://next.json-generator.com/E1g60a1pL

代码如下：

[
  {
    'repeat(5, 10)': {
      id: '{{objectId()}}',
      name: '{{firstName()}}',
      price: '{{floating(5, 4000, 2, "[=11=],0.00")}}',
      availableColors: (colors) => {
               var condition = '{{integer(1, 6)}}';
               var color = [];
               for (j = 0; j < condition+1; j++)
               {color [j] = '{{random("blue", "brown", "green",  "white", "yellow", "gray")}}';}
               let unique_array = [];
               for(let i = 0;i < color.length; i++) {
                   if(unique_array.indexOf(color[i]) == -1){
                      unique_array.push(color[i]);
                }
               }
               return unique_array;
},
      weight: '{{floating(1, 4000, 2, "0.00")}}',
      inStock: '{{integer(0, 2000)}}'
    }
  }
]

这是我得到的结果：

[
  {
    "id": "5ce82b1302c9777aac5fd681",
    "name": "Blake",
    "price": "9.53",
    "availableColors": [],
    "weight": "3753.22",
    "inStock": 449
  },
  {
    "id": "5ce82b137ab9fe24eda22714",
    "name": "Felicia",
    "price": ",190.01",
    "availableColors": [],
    "weight": "3797.51",
    "inStock": 1288
  },
  {
    "id": "5ce82b135414eb7550aee368",
    "name": "Bettye",
    "price": "7.41",
    "availableColors": [],
    "weight": "2182.52",
    "inStock": 1288
  },
  {
    "id": "5ce82b13f751e63a8506fbf2",
    "name": "Mullen",
    "price": ",306.81",
    "availableColors": [],
    "weight": "694.51",
    "inStock": 821
  },
  {
    "id": "5ce82b130544c7c08086a6bc",
    "name": "Angelita",
    "price": "4.90",
    "availableColors": [],
    "weight": "3.44",
    "inStock": 226
  },
  {
    "id": "5ce82b130d9e2fc4c2a21e22",
    "name": "Mcknight",
    "price": ",582.76",
    "availableColors": [],
    "weight": "1183.82",
    "inStock": 1917
  },
  {
    "id": "5ce82b13fb509ee9c384a096",
    "name": "Nannie",
    "price": ",479.29",
    "availableColors": [],
    "weight": "754.85",
    "inStock": 716
  },
  {
    "id": "5ce82b13881cb29ec7a1772b",
    "name": "Sutton",
    "price": ",726.83",
    "availableColors": [],
    "weight": "1382.76",
    "inStock": 1911
  },
  {
    "id": "5ce82b1386ad13bffcf0923b",
    "name": "Maria",
    "price": ",679.58",
    "availableColors": [],
    "weight": "1106.28",
    "inStock": 5
  },
  {
    "id": "5ce82b13fccd87dbe6451971",
    "name": "Noble",
    "price": "9.25",
    "availableColors": [],
    "weight": "1657.83",
    "inStock": 235
  }
]

我希望任何文档的 "availableColors" 都是一到六种预定义颜色的数组。有什么想法吗？

Answer 1

您需要使用 Math.random 制作一个纯 javascript 循环我更新了 link： https://next.json-generator.com/EJXO4xfaU

Answer 2

在深入研究了 JSON Generator 主页中提供的示例后，我发现了如何使用其关键字来获得相同的结果。顺便说一句，按照我的文档架构，我添加了随机提供或不提供所有不需要的属性的值的方法。

这里是给在线编辑的URL：https://next.json-generator.com/4k8Wd87pU

代码如下：

[{
  'repeat(5, 10)': {
    id: '{{objectId()}}',
    name: '{{firstName()}}',
    price(tags) {
      const nRequired = tags.integer(0, 5);
      if (nRequired) {
        return tags.floating(5, 4000, 2, "[=10=],0.00");
      }
    },
    availableColors(tags) {
      const nRequired = tags.integer(0, 3);
      if (!nRequired) return;
      const Colors = ['blue', 'brown', 'green', 'white', 'yellow', 'gray'];
      const nColors = tags.integer(0, Colors.length - 1); // generate a random integer from 0 to 5 will be used to select the total number of colors to add as values
      const aColors = [];
      for (j = 0; j <= nColors && !aColors[j]; j++) {
        let sColor = tags.integer(0, Colors.length - 1); // generate a random integer from 0 to 5 that will be used as index to select a random color from the Colors array
        if (aColors.indexOf(Colors[sColor]) == -1) {
          aColors.push(Colors[sColor]);
        }
      }
      return aColors;
    },
    weight(tags) {
      const nRequired = tags.integer(0, 5);
      if (nRequired) {
        return tags.floating(1, 900, 2, "0.00");
      }
    },
    inStock(tags) {
      const nRequired = tags.integer(0, 2);
      if (nRequired) {
        return tags.integer(0, 2000);
      }
    }
  }
}]

为 MongoDB 数据库播种的文档的自动随机测试数据生成

Automatic Random Test Data Generation of Documents for Seeding a MongoDB Database

javascript

database

json

mongodb

seeding