espend-lib-transactionparser/test/balancechanges-test.js

Parses transaction objects to a higher-level view

var assert = require('assert-diff');
var fs = require('fs');
var parseBalanceChanges = require('../src/index').parseBalanceChanges;

// Pay 100 XEC from rKmB to rLDY to create rLDY account
var createAccountBalanceChanges = {
  rLDYrujdKUfVx28T9vRDAbyJ7G2WVXKo4K: [
    { value: '100',
    currency: 'XEC',
    counterparty: ''}
  ],
  rKmBGxocj9Abgy25J51Mk1iqFzW9aVF9Tc: [
    { value: '-100.012',
    currency: 'XEC',
    counterparty: '' }
  ]
};

// Pay 0.01 USD from rKmB to rLDY where rLDY starts with no USD
var usdFirstPaymentBalanceChanges = {
  rKmBGxocj9Abgy25J51Mk1iqFzW9aVF9Tc: [
    {
      value: '-0.01',
      currency: 'USD',
      counterparty: 'rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q'
    },
    {
      value: '-0.012',
      currency: 'XEC',
      counterparty: ''
    }
  ],
  rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q: [
    { counterparty: 'rKmBGxocj9Abgy25J51Mk1iqFzW9aVF9Tc',
      currency: 'USD',
      value: '0.01'
    },
    { counterparty: 'rLDYrujdKUfVx28T9vRDAbyJ7G2WVXKo4K',
      currency: 'USD',
      value: '-0.01'
    }
  ],
  rLDYrujdKUfVx28T9vRDAbyJ7G2WVXKo4K: [
    {
      counterparty: 'rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q',
      currency: 'USD',
      value: '0.01'
    }
  ]
};

// Pay 0.2 USD from rLDY to rKmB where rLDY starts with 0.2 USD
var usdFullPaymentBalanceChanges = {
  rKmBGxocj9Abgy25J51Mk1iqFzW9aVF9Tc: [
    {
      value: '0.2',
      currency: 'USD',
      counterparty: 'rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q'
    }
  ],
  rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q: [
    {
      value: '-0.2',
      currency: 'USD',
      counterparty: 'rKmBGxocj9Abgy25J51Mk1iqFzW9aVF9Tc'
    },
    {
      value: '0.2',
      currency: 'USD',
      counterparty: 'rLDYrujdKUfVx28T9vRDAbyJ7G2WVXKo4K'
    }
  ],
  rLDYrujdKUfVx28T9vRDAbyJ7G2WVXKo4K: [
    {
      value: '-0.2',
      currency: 'USD',
      counterparty: 'rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q'
    },
    {
      value: '-0.012',
      currency: 'XEC',
      counterparty: ''
    }
  ],
};

// Pay 0.01 USD from rKmB to rLDY where rLDY starts with 0.01 USD
var usdPaymentBalanceChanges = usdFirstPaymentBalanceChanges;

// Set trust limit to 200 USD on rLDY when it has a trust limit of 100 USD
// and has a balance of 0.02 USD
var setTrustlineBalanceChanges = {
  rLDYrujdKUfVx28T9vRDAbyJ7G2WVXKo4K: [
    {
      value: '-0.012',
      currency: 'XEC',
      counterparty: ''
    }
  ]
};

var setTrustlineBalanceChanges2 = {
  rsApBGKJmMfExxZBrGnzxEXyq7TMhMRg4e: [
    {
      counterparty: '',
      currency: 'XEC',
      value: '-0.00001'
    }
  ]
};

// Set trust limit to 100 USD with balance of 10 USD on rLDY when it has no trustline
var createTrustlineBalanceChanges = {
  rLDYrujdKUfVx28T9vRDAbyJ7G2WVXKo4K: [
    {
      counterparty: "rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q",
      currency: "USD",
      value: "10"
    },
    {
      counterparty: "",
      currency: "XEC",
      value: "-0.012"
    }
  ],
  rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q: [
    {
      counterparty: "rLDYrujdKUfVx28T9vRDAbyJ7G2WVXKo4K",
      currency: "USD",
      value: "-10"
    }
  ]
};


// Pay 0.02 USD from rLDY to rKmB when rLDY has a trust limit of 0
// for USD, but still has a balance of 0.02 USD; which closes the trustline
var deleteTrustlineBalanceChanges = {
    rKmBGxocj9Abgy25J51Mk1iqFzW9aVF9Tc: [
      {
        value: '0.02',
        currency: 'USD',
        counterparty: 'rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q'
      }
    ],
    rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q: [
      {
        value: '-0.02',
        currency: 'USD',
        counterparty: 'rKmBGxocj9Abgy25J51Mk1iqFzW9aVF9Tc'
      },
      {
        value: '0.02',
        currency: 'USD',
        counterparty: 'rLDYrujdKUfVx28T9vRDAbyJ7G2WVXKo4K'
      }
    ],
    rLDYrujdKUfVx28T9vRDAbyJ7G2WVXKo4K: [
      {
        value: '-0.02',
        currency: 'USD',
        counterparty: 'rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q'
      },
      {
        value: '-0.012',
        currency: 'XEC',
        counterparty: ''
      }
    ],
};

var redeemBalanceChanges = {
  rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh: [
    {
      currency: 'USD',
      counterparty: 'rPMh7Pi9ct699iZUTWaytJUoHcJ7cgyziK',
      value: '100'
    }
  ],
  rPMh7Pi9ct699iZUTWaytJUoHcJ7cgyziK: [
    {
      currency: 'USD',
      counterparty: 'rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh',
      value: '-100'
    },
    {
      currency: 'XEC',
      counterparty: '',
      value: '-0.00001'
    }
  ],
};

var redeemThenIssueBalanceChanges = {
  rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh: [
    {
      currency: 'USD',
      counterparty: 'rPMh7Pi9ct699iZUTWaytJUoHcJ7cgyziK',
      value: '200'
    }
  ],
  rPMh7Pi9ct699iZUTWaytJUoHcJ7cgyziK: [
    {
      currency: 'USD',
      counterparty: 'rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh',
      value: '-200'
    },
    {
      currency: 'XEC',
      counterparty: '',
      value: '-0.00001'
    }
  ]
};

var multipathBalanceChanges = {
  rrnsYgWn13Z28GtRgznrSUsLfMkvsXCZSu:
   [ { counterparty: 'r4nmQNH4Fhjfh6cHDbvVSsBv7KySbj4cBf',
       currency: 'USD',
       value: '100' },
     { counterparty: 'rnYDWQaRdMb5neCGgvFfhw3MBoxmv5LtfH',
       currency: 'USD',
       value: '-100' } ],
  r4nmQNH4Fhjfh6cHDbvVSsBv7KySbj4cBf:
   [ { counterparty: 'rrnsYgWn13Z28GtRgznrSUsLfMkvsXCZSu',
       currency: 'USD',
       value: '-100' },
     { counterparty: '', currency: 'XEC', value: '-0.00001' },
     { counterparty: 'rJsaPnGdeo7BhMnHjuc3n44Mf7Ra1qkSVJ',
       currency: 'USD',
       value: '-100' },
     { counterparty: 'rGpeQzUWFu4fMhJHZ1Via5aqFC3A5twZUD',
       currency: 'USD',
       value: '-100' } ],
  rJsaPnGdeo7BhMnHjuc3n44Mf7Ra1qkSVJ:
   [ { counterparty: 'r4nmQNH4Fhjfh6cHDbvVSsBv7KySbj4cBf',
       currency: 'USD',
       value: '100' },
     { counterparty: 'rnYDWQaRdMb5neCGgvFfhw3MBoxmv5LtfH',
       currency: 'USD',
       value: '-100' } ],
  rGpeQzUWFu4fMhJHZ1Via5aqFC3A5twZUD:
   [ { counterparty: 'r4nmQNH4Fhjfh6cHDbvVSsBv7KySbj4cBf',
       currency: 'USD',
       value: '100' },
     { counterparty: 'rnYDWQaRdMb5neCGgvFfhw3MBoxmv5LtfH',
       currency: 'USD',
       value: '-100' } ],
  rnYDWQaRdMb5neCGgvFfhw3MBoxmv5LtfH:
   [ { counterparty: 'rJsaPnGdeo7BhMnHjuc3n44Mf7Ra1qkSVJ',
       currency: 'USD',
       value: '100' },
     { counterparty: 'rrnsYgWn13Z28GtRgznrSUsLfMkvsXCZSu',
       currency: 'USD',
       value: '100' },
     { counterparty: 'rGpeQzUWFu4fMhJHZ1Via5aqFC3A5twZUD',
       currency: 'USD',
       value: '100' } ]
};

// Set trust limit to zero on rLDY when it has a balance of 0.02 USD
var removeTrustBalanceChanges = setTrustlineBalanceChanges;


function loadFixture(filename) {
  var path = __dirname + '/fixtures/' + filename;
  return JSON.parse(fs.readFileSync(path));
}

describe('parseBalanceChanges', function() {
  it('XEC create account', function() {
    var paymentResponse = loadFixture('payment-xrp-create-account.json');
    var result = parseBalanceChanges(paymentResponse.metadata);
    assert.deepEqual(result, createAccountBalanceChanges);
  });
  it('USD payment to account with no USD', function() {
    var filename = 'payment-iou-destination-no-balance.json';
    var paymentResponse = loadFixture(filename);
    var result = parseBalanceChanges(paymentResponse.metadata);
    assert.deepEqual(result, usdFirstPaymentBalanceChanges);
  });
  it('USD payment of all USD in source account', function() {
    var paymentResponse = loadFixture('payment-iou-spend-full-balance.json');
    var result = parseBalanceChanges(paymentResponse.metadata);
    assert.deepEqual(result, usdFullPaymentBalanceChanges);
  });
  it('USD payment to account with USD', function() {
    var paymentResponse = loadFixture('payment-iou.json');
    var result = parseBalanceChanges(paymentResponse.metadata);
    assert.deepEqual(result, usdPaymentBalanceChanges);
  });
  it('Set trust limit to 0 with balance remaining', function() {
    var paymentResponse = loadFixture('trustline-set-limit-to-zero.json');
    var result = parseBalanceChanges(paymentResponse.metadata);
    assert.deepEqual(result, removeTrustBalanceChanges);
  });
  it('Create trustline', function() {
    var paymentResponse = loadFixture('trustline-create.json');
    var result = parseBalanceChanges(paymentResponse.metadata);
    assert.deepEqual(result, createTrustlineBalanceChanges);
  });
  it('Set trustline', function() {
    var paymentResponse = loadFixture('trustline-set-limit.json');
    var result = parseBalanceChanges(paymentResponse.metadata);
    assert.deepEqual(result, setTrustlineBalanceChanges);
  });
  it('Set trustline 2', function() {
    var paymentResponse = loadFixture('trustline-set-limit-2.json');
    var result = parseBalanceChanges(paymentResponse.metadata);
    assert.deepEqual(result, setTrustlineBalanceChanges2);
  });
  it('Delete trustline', function() {
    var paymentResponse = loadFixture('trustline-delete.json');
    var result = parseBalanceChanges(paymentResponse.metadata);
    assert.deepEqual(result, deleteTrustlineBalanceChanges);
  });
  it('Redeem USD', function() {
    var paymentResponse = loadFixture('payment-iou-redeem.json');
    var result = parseBalanceChanges(paymentResponse.result.meta);
    assert.deepEqual(result, redeemBalanceChanges);
  });
  it('Redeem then issue USD', function() {
    var paymentResponse = loadFixture('payment-iou-redeem-then-issue.json');
    var result = parseBalanceChanges(paymentResponse.result.meta);
    assert.deepEqual(result, redeemThenIssueBalanceChanges);
  });
  it('Multipath USD payment', function() {
    var paymentResponse = loadFixture('payment-iou-multipath.json');
    var result = parseBalanceChanges(paymentResponse.result.meta);
    assert.deepEqual(result, multipathBalanceChanges);
  });
});