{
  "exercise": "variable-length-quantity",
  "version": "1.1.0",
  "comments": [
    "JSON doesn't allow hexadecimal literals.",
    "All numbers are given as decimal literals instead.",
    "It is highly recommended that your track's test generator display all numbers as hexadecimal literals."
  ],
  "cases": [
    {
      "description": "Encode a series of integers, producing a series of bytes.",
      "cases": [
        {
          "description": "zero",
          "property": "encode",
          "input": {
            "integers": [0]
          },
          "expected": [0]
        },
        {
          "description": "arbitrary single byte",
          "property": "encode",
          "input": {
            "integers": [64]
          },
          "expected": [64]
        },
        {
          "description": "largest single byte",
          "property": "encode",
          "input": {
            "integers": [127]
          },
          "expected": [127]
        },
        {
          "description": "smallest double byte",
          "property": "encode",
          "input": {
            "integers": [128]
          },
          "expected": [129,0]
        },
        {
          "description": "arbitrary double byte",
          "property": "encode",
          "input": {
            "integers": [8192]
          },
          "expected": [192, 0]
        },
        {
          "description": "largest double byte",
          "property": "encode",
          "input": {
            "integers": [16383]
          },
          "expected": [255, 127]
        },
        {
          "description": "smallest triple byte",
          "property": "encode",
          "input": {
            "integers": [16384]
          },
          "expected": [129, 128, 0]
        },
        {
          "description": "arbitrary triple byte",
          "property": "encode",
          "input": {
            "integers": [1048576]
          },
          "expected": [192, 128, 0]
        },
        {
          "description": "largest triple byte",
          "property": "encode",
          "input": {
            "integers": [2097151]
          },
          "expected": [255, 255, 127]
        },
        {
          "description": "smallest quadruple byte",
          "property": "encode",
          "input": {
            "integers": [2097152]
          },
          "expected": [129, 128, 128, 0]
        },
        {
          "description": "arbitrary quadruple byte",
          "property": "encode",
          "input": {
            "integers": [134217728]
          },
          "expected": [192, 128, 128, 0]
        },
        {
          "description": "largest quadruple byte",
          "property": "encode",
          "input": {
            "integers": [268435455]
          },
          "expected": [255, 255, 255, 127]
        },
        {
          "description": "smallest quintuple byte",
          "property": "encode",
          "input": {
            "integers": [268435456]
          },
          "expected": [129, 128, 128, 128, 0]
        },
        {
          "description": "arbitrary quintuple byte",
          "property": "encode",
          "input": {
            "integers": [4278190080]
          },
          "expected": [143, 248, 128, 128, 0]
        },
        {
          "description": "maximum 32-bit integer input",
          "property": "encode",
          "input": {
            "integers": [4294967295]
          },
          "expected": [143, 255, 255, 255, 127]
        },
        {
          "description": "two single-byte values",
          "property": "encode",
          "input": {
            "integers": [64, 127]
          },
          "expected": [64, 127]
        },
        {
          "description": "two multi-byte values",
          "property": "encode",
          "input": {
            "integers": [16384, 1193046]
          },
          "expected": [129, 128, 0, 200, 232, 86]
        },
        {
          "description": "many multi-byte values",
          "property": "encode",
          "input": {
            "integers": [8192, 1193046, 268435455, 0, 16383, 16384]
          },
          "expected": [192, 0, 200, 232, 86, 255, 255, 255, 127, 0, 255, 127, 129, 128, 0]
        }
      ]
    },
    {
      "description": "Decode a series of bytes, producing a series of integers.",
      "cases": [
        {
          "description": "one byte",
          "property": "decode",
          "input": {
            "integers": [127]
          },
          "expected": [127]
        },
        {
          "description": "two bytes",
          "property": "decode",
          "input": {
            "integers": [192, 0]
          },
          "expected": [8192]
        },
        {
          "description": "three bytes",
          "property": "decode",
          "input": {
            "integers": [255, 255, 127]
          },
          "expected": [2097151]
        },
        {
          "description": "four bytes",
          "property": "decode",
          "input": {
            "integers": [129, 128, 128, 0]
          },
          "expected": [2097152]
        },
        {
          "description": "maximum 32-bit integer",
          "property": "decode",
          "input": {
            "integers": [143, 255, 255, 255, 127]
          },
          "expected": [4294967295]
        },
        {
          "description": "incomplete sequence causes error",
          "property": "decode",
          "input": {
            "integers": [255]
          },
          "expected": null
        },
        {
          "description": "incomplete sequence causes error, even if value is zero",
          "property": "decode",
          "input": {
            "integers": [128]
          },
          "expected": null
        },
        {
          "description": "multiple values",
          "property": "decode",
          "input": {
            "integers": [192, 0, 200, 232, 86, 255, 255, 255, 127, 0, 255, 127, 129, 128, 0] 
          },
          "expected": [8192, 1193046, 268435455, 0, 16383, 16384]
        }
      ]
    }
  ]
}