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luhn-generator

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A generator of numbers that passes the validation of Luhn algorithm or Luhn formula, also known as the 'modulus 10' or 'mod 10' algorithm

37 lines (27 loc) 1.19 kB
'use strict'; var values = require('../'); values.shim(); var test = require('tape'); var defineProperties = require('define-properties'); var isEnumerable = Object.prototype.propertyIsEnumerable; var functionsHaveNames = require('functions-have-names')(); var runTests = require('./tests'); test('shimmed', function (t) { t.equal(Object.values.length, 1, 'Object.values has a length of 1'); t.test('Function name', { skip: !functionsHaveNames }, function (st) { st.equal(Object.values.name, 'values', 'Object.values has name "values"'); st.end(); }); t.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) { et.equal(false, isEnumerable.call(Object, 'values'), 'Object.values is not enumerable'); et.end(); }); var supportsStrictMode = (function () { return typeof this === 'undefined'; }()); t.test('bad object value', { skip: !supportsStrictMode }, function (st) { st['throws'](function () { return Object.values(undefined); }, TypeError, 'undefined is not an object'); st['throws'](function () { return Object.values(null); }, TypeError, 'null is not an object'); st.end(); }); runTests(Object.values, t); t.end(); });