base-58/Base58_Test.coffee

Base58 encoding & decoding for Node.js & web agent windows.

module.exports = (tape, Base58) ->
  tape "Base58", (test) ->
    test.same Base58.encode.constructor, Function
    test.same Base58.decode.constructor, Function
    test.end()

  tape "encode valid string input", (test) ->
    test.plan FIXTURES.valid.length
    for fixture in FIXTURES.valid
      actual = Base58.encode(new Buffer(fixture.hex, 'hex'))
      test.same actual, fixture.string
    test.end()

  tape "decode valid hex input", (test) ->
    test.plan FIXTURES.valid.length
    for fixture in FIXTURES.valid
      actual = new Buffer(Base58.decode(fixture.string)).toString('hex')
      test.same actual, fixture.hex
    test.end()

  tape "can’t decode invalid input", (test) ->
    test.plan FIXTURES.invalid.length
    for fixture in FIXTURES.invalid
      impossible = -> Base58.decode(fixture.string)
      test.throws impossible, /decode received unacceptable input/
    test.end()

  FIXTURES =
    "valid": [
      {
        "hex": "",
        "string": ""
      },
      {
        "hex": "61",
        "string": "2g"
      },
      {
        "hex": "626262",
        "string": "a3gV"
      },
      {
        "hex": "636363",
        "string": "aPEr"
      },
      {
        "hex": "73696d706c792061206c6f6e6720737472696e67",
        "string": "2cFupjhnEsSn59qHXstmK2ffpLv2"
      },
      {
        "hex": "00eb15231dfceb60925886b67d065299925915aeb172c06647",
        "string": "1NS17iag9jJgTHD1VXjvLCEnZuQ3rJDE9L"
      },
      {
        "hex": "516b6fcd0f",
        "string": "ABnLTmg"
      },
      {
        "hex": "bf4f89001e670274dd",
        "string": "3SEo3LWLoPntC"
      },
      {
        "hex": "572e4794",
        "string": "3EFU7m"
      },
      {
        "hex": "ecac89cad93923c02321",
        "string": "EJDM8drfXA6uyA"
      },
      {
        "hex": "10c8511e",
        "string": "Rt5zm"
      },
      {
        "hex": "00000000000000000000",
        "string": "1111111111"
      },
      {
        "hex": "801184cd2cdd640ca42cfc3a091c51d549b2f016d454b2774019c2b2d2e08529fd206ec97e",
        "string": "5Hx15HFGyep2CfPxsJKe2fXJsCVn5DEiyoeGGF6JZjGbTRnqfiD"
      },
      {
        "hex": "003c176e659bea0f29a3e9bf7880c112b1b31b4dc826268187",
        "string": "16UjcYNBG9GTK4uq2f7yYEbuifqCzoLMGS"
      }
    ],
    "invalid": [
      {
        "description": "non-base58 string",
        "string": "invalid"
      },
      {
        "description": "non-base58 alphabet",
        "string": "c2F0b3NoaQo="
      },
      {
        "description": "leading whitespace",
        "string": " 1111111111"
      },
      {
        "description": "trailing whitespace",
        "string": "1111111111 "
      },
      {
        "description": "unexpected character after whitespace",
        "string": " \t\n\u000b\f\r skip \r\f\u000b\n\t a"
      }
    ]