canonical-data.json

{
  "exercise": "variable-length-quantity",
  "comments": [
    "JSON doesn't allow hexadecimal literals.",
    "All numbers are given as decimal literals instead.",
    "An error should be expected for incomplete sequences.",
    "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": [
        {
          "uuid": "35c9db2e-f781-4c52-b73b-8e76427defd0",
          "description": "zero",
          "property": "encode",
          "input": {
            "integers": [0]
          },
          "expected": [0]
        },
        {
          "uuid": "be44d299-a151-4604-a10e-d4b867f41540",
          "description": "arbitrary single byte",
          "property": "encode",
          "input": {
            "integers": [64]
          },
          "expected": [64]
        },
        {
          "uuid": "ea399615-d274-4af6-bbef-a1c23c9e1346",
          "description": "largest single byte",
          "property": "encode",
          "input": {
            "integers": [127]
          },
          "expected": [127]
        },
        {
          "uuid": "77b07086-bd3f-4882-8476-8dcafee79b1c",
          "description": "smallest double byte",
          "property": "encode",
          "input": {
            "integers": [128]
          },
          "expected": [129, 0]
        },
        {
          "uuid": "63955a49-2690-4e22-a556-0040648d6b2d",
          "description": "arbitrary double byte",
          "property": "encode",
          "input": {
            "integers": [8192]
          },
          "expected": [192, 0]
        },
        {
          "uuid": "29da7031-0067-43d3-83a7-4f14b29ed97a",
          "description": "largest double byte",
          "property": "encode",
          "input": {
            "integers": [16383]
          },
          "expected": [255, 127]
        },
        {
          "uuid": "3345d2e3-79a9-4999-869e-d4856e3a8e01",
          "description": "smallest triple byte",
          "property": "encode",
          "input": {
            "integers": [16384]
          },
          "expected": [129, 128, 0]
        },
        {
          "uuid": "5df0bc2d-2a57-4300-a653-a75ee4bd0bee",
          "description": "arbitrary triple byte",
          "property": "encode",
          "input": {
            "integers": [1048576]
          },
          "expected": [192, 128, 0]
        },
        {
          "uuid": "f51d8539-312d-4db1-945c-250222c6aa22",
          "description": "largest triple byte",
          "property": "encode",
          "input": {
            "integers": [2097151]
          },
          "expected": [255, 255, 127]
        },
        {
          "uuid": "da78228b-544f-47b7-8bfe-d16b35bbe570",
          "description": "smallest quadruple byte",
          "property": "encode",
          "input": {
            "integers": [2097152]
          },
          "expected": [129, 128, 128, 0]
        },
        {
          "uuid": "11ed3469-a933-46f1-996f-2231e05d7bb6",
          "description": "arbitrary quadruple byte",
          "property": "encode",
          "input": {
            "integers": [134217728]
          },
          "expected": [192, 128, 128, 0]
        },
        {
          "uuid": "d5f3f3c3-e0f1-4e7f-aad0-18a44f223d1c",
          "description": "largest quadruple byte",
          "property": "encode",
          "input": {
            "integers": [268435455]
          },
          "expected": [255, 255, 255, 127]
        },
        {
          "uuid": "91a18b33-24e7-4bfb-bbca-eca78ff4fc47",
          "description": "smallest quintuple byte",
          "property": "encode",
          "input": {
            "integers": [268435456]
          },
          "expected": [129, 128, 128, 128, 0]
        },
        {
          "uuid": "5f34ff12-2952-4669-95fe-2d11b693d331",
          "description": "arbitrary quintuple byte",
          "property": "encode",
          "input": {
            "integers": [4278190080]
          },
          "expected": [143, 248, 128, 128, 0]
        },
        {
          "uuid": "7489694b-88c3-4078-9864-6fe802411009",
          "description": "maximum 32-bit integer input",
          "property": "encode",
          "input": {
            "integers": [4294967295]
          },
          "expected": [143, 255, 255, 255, 127]
        },
        {
          "uuid": "f9b91821-cada-4a73-9421-3c81d6ff3661",
          "description": "two single-byte values",
          "property": "encode",
          "input": {
            "integers": [64, 127]
          },
          "expected": [64, 127]
        },
        {
          "uuid": "68694449-25d2-4974-ba75-fa7bb36db212",
          "description": "two multi-byte values",
          "property": "encode",
          "input": {
            "integers": [16384, 1193046]
          },
          "expected": [129, 128, 0, 200, 232, 86]
        },
        {
          "uuid": "51a06b5c-de1b-4487-9a50-9db1b8930d85",
          "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": [
        {
          "uuid": "baa73993-4514-4915-bac0-f7f585e0e59a",
          "description": "one byte",
          "property": "decode",
          "input": {
            "integers": [127]
          },
          "expected": [127]
        },
        {
          "uuid": "72e94369-29f9-46f2-8c95-6c5b7a595aee",
          "description": "two bytes",
          "property": "decode",
          "input": {
            "integers": [192, 0]
          },
          "expected": [8192]
        },
        {
          "uuid": "df5a44c4-56f7-464e-a997-1db5f63ce691",
          "description": "three bytes",
          "property": "decode",
          "input": {
            "integers": [255, 255, 127]
          },
          "expected": [2097151]
        },
        {
          "uuid": "1bb58684-f2dc-450a-8406-1f3452aa1947",
          "description": "four bytes",
          "property": "decode",
          "input": {
            "integers": [129, 128, 128, 0]
          },
          "expected": [2097152]
        },
        {
          "uuid": "cecd5233-49f1-4dd1-a41a-9840a40f09cd",
          "description": "maximum 32-bit integer",
          "property": "decode",
          "input": {
            "integers": [143, 255, 255, 255, 127]
          },
          "expected": [4294967295]
        },
        {
          "uuid": "e7d74ba3-8b8e-4bcb-858d-d08302e15695",
          "description": "incomplete sequence causes error",
          "property": "decode",
          "input": {
            "integers": [255]
          },
          "expected": {
            "error": "incomplete sequence"
          }
        },
        {
          "uuid": "aa378291-9043-4724-bc53-aca1b4a3fcb6",
          "description": "incomplete sequence causes error, even if value is zero",
          "property": "decode",
          "input": {
            "integers": [128]
          },
          "expected": {
            "error": "incomplete sequence"
          }
        },
        {
          "uuid": "a91e6f5a-c64a-48e3-8a75-ce1a81e0ebee",
          "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]
        }
      ]
    }
  ]
}