convert-units/test/best.js

Convert between quantities in different units

var convert = require('../lib')
  , assert = require('assert')
  , tests = {};

tests['best mm'] = function () {
  var actual = convert(1200).from('mm').toBest()
    , expected = {
        val: 1.2
      , unit: 'm'
      , singular: 'Meter'
      , plural: 'Meters'
      };

  assert.deepEqual(actual, expected);
};

tests['excludes measurements'] = function () {
  var actual = convert(1200000).from('mm').toBest({ exclude: ['km', 'm'] })
    , expected = {
        val: 120000
      , unit: 'cm'
      , singular: 'Centimeter'
      , plural: 'Centimeters'
      };

  assert.deepEqual(actual, expected);
}

tests['does not break when excluding from measurement'] = function () {
  var actual = convert(10).from('km').toBest({ exclude: ['km'] })
    , expected = {
        val: 10000
      , unit: 'm'
      , singular: 'Meter'
      , plural: 'Meters'
      };

  assert.deepEqual(actual, expected);
}

tests['if all measurements are excluded return from'] = function () {
  var actual = convert(10).from('km').toBest({ exclude: ['mm, cm, m, km'] })
    , expected = {
        val: 10
      , unit: 'km'
      , singular: 'Kilometer'
      , plural: 'Kilometers'
      };

  assert.deepEqual(actual, expected);
}

tests['pre-cut off number'] = function () {
  var actual = convert(9000).from('mm').toBest({ cutOffNumber: 10 })
    , expected = {
        val: 900
      , unit: 'cm'
      , singular: 'Centimeter'
      , plural: 'Centimeters'
      };

  assert.deepEqual(actual, expected);
}

tests['post-cut off number'] = function () {
  var actual = convert(10000).from('mm').toBest({ cutOffNumber: 10 })
    , expected = {
        val: 10
      , unit: 'm'
      , singular: 'Meter'
      , plural: 'Meters'
      };

  assert.deepEqual(actual, expected);
}

module.exports = tests;