@anonymousbitcoin/anoncore-lib/test/transaction/unspentoutput.js

A pure and powerful JavaScript Anon library.

'use strict';

var _ = require('lodash');
var chai = require('chai');
var should = chai.should();
var expect = chai.expect;

var bitcore = require('../..');
var UnspentOutput = bitcore.Transaction.UnspentOutput;

describe('UnspentOutput', function() {
  var sampleData1 = {
    'address': 'tAH2c8qsUeNefUeYHYhdaVrPY9ovgKXCnRC',
    'txId': 'a477af6b2667c29670467e4e0728b685ee07b240235771862318e29ddbe58458',
    'outputIndex': 0,
    'script': 'OP_DUP OP_HASH160 54ad629346f41bc75ab47639bf7fe1e3d28c6e99 OP_EQUALVERIFY OP_CHECKSIG',
    'satoshis': 100000000
  };
  var sampleData2 = {
    'txid': '05a17e70be82b717335df486c56bfa346950f43df3106e80ca22b8a8dbde2073',
    'vout': 1,
    'address': 'tAK2M6LnsXcVF2wToSCfwFV3FrLzNPJPj8s',
    'scriptPubKey': '76a914649c295f3ca23cf672022344c8368035ae0cc9ef88ac',
    'amount': 2
  };

  it('roundtrip from raw data', function() {
    expect(UnspentOutput(sampleData2).toObject()).to.deep.equal(sampleData2);
  });

  it('can be created without "new" operand', function() {
    expect(UnspentOutput(sampleData1) instanceof UnspentOutput).to.equal(true);
  });

  it('fails if no tx id is provided', function() {
    expect(function() {
      return new UnspentOutput({});
    }).to.throw();
  });

  it('fails if vout is not a number', function() {
    var sample = _.cloneDeep(sampleData2);
    sample.vout = '1';
    expect(function() {
      return new UnspentOutput(sample);
    }).to.throw();
  });

  it('displays nicely on the console', function() {
    var expected = '<UnspentOutput: a477af6b2667c29670467e4e0728b685ee07b240235771862318e29ddbe58458:0' +
                   ', satoshis: 100000000, address: tAH2c8qsUeNefUeYHYhdaVrPY9ovgKXCnRC>';
    expect(new UnspentOutput(sampleData1).inspect()).to.equal(expected);
  });

  describe('checking the constructor parameters', function() {
    var notDefined = {
      'txId': 'a477af6b2667c29670467e4e0728b685ee07b240235771862318e29ddbe58458',
      'outputIndex': 0,
      'script': 'OP_DUP OP_HASH160 20 0x88d9931ea73d60eaf7e5671efc0552b912911f2a OP_EQUALVERIFY OP_CHECKSIG',
    };
    var zero = {
      'txId': 'a477af6b2667c29670467e4e0728b685ee07b240235771862318e29ddbe58458',
      'outputIndex': 0,
      'script': 'OP_DUP OP_HASH160 20 0x88d9931ea73d60eaf7e5671efc0552b912911f2a OP_EQUALVERIFY OP_CHECKSIG',
      'amount': 0
    };
    it('fails when no amount is defined', function() {
      expect(function() {
        return new UnspentOutput(notDefined);
      }).to.throw('Must provide an amount for the output');
    });
    it('does not fail when amount is zero', function() {
      expect(function() {
        return new UnspentOutput(zero);
      }).to.not.throw();
    });
  });

  it('toString returns txid:vout', function() {
    var expected = 'a477af6b2667c29670467e4e0728b685ee07b240235771862318e29ddbe58458:0';
    expect(new UnspentOutput(sampleData1).toString()).to.equal(expected);
  });

  it('to/from JSON roundtrip', function() {
    var utxo = new UnspentOutput(sampleData2);
    var obj = UnspentOutput.fromObject(utxo.toJSON()).toObject();
    expect(obj).to.deep.equal(sampleData2);
    var str = JSON.stringify(UnspentOutput.fromObject(obj));
    expect(JSON.parse(str)).to.deep.equal(sampleData2);
    var str2 = JSON.stringify(new UnspentOutput(JSON.parse(str)));
    expect(JSON.parse(str2)).to.deep.equal(sampleData2);
  });
});