xahau.js/packages/ripple-binary-codec/test/amount.test.js

const _ = require('lodash')
const { loadFixture } = require('./utils')
const { coreTypes } = require('../dist/types')
const { Amount } = coreTypes
const fixtures = loadFixture('data-driven-tests.json')

function amountErrorTests () {
  fixtures.values_tests.filter(obj => obj.type === 'Amount').forEach(f => {
    // We only want these with errors
    if (!f.error) {
      return
    }
    const testName = `${JSON.stringify(f.test_json)}\n\tis invalid ` +
                     `because: ${f.error}`
    it(testName, () => {
      expect(() => {
        Amount.from(f.test_json)
        JSON.stringify(f.test_json)
      }).toThrow()
    })
  })
}

describe('Amount', function () {
  it('can be parsed from', function () {
    expect(Amount.from('1000000') instanceof Amount).toBe(true)
    expect(Amount.from('1000000').toJSON()).toEqual('1000000')
    const fixture = {
      value: '1',
      issuer: '0000000000000000000000000000000000000000',
      currency: 'USD'
    }
    const amt = Amount.from(fixture)
    const rewritten = {
      value: '1',
      issuer: 'rrrrrrrrrrrrrrrrrrrrrhoLvTp',
      currency: 'USD'
    }
    expect(amt.toJSON()).toEqual(rewritten)
  })
  amountErrorTests()
})