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node_modules/pseudomap/test/basic.js 1.84 KB
aaac7fed   liuqimichale   add
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  var t = require('tap')
  
  process.env.TEST_PSEUDOMAP = 'true'
  
  var PM = require('../')
  runTests(PM)
  
  // if possible, verify that Map also behaves the same way
  if (typeof Map === 'function')
    runTests(Map)
  
  
  function runTests (Map) {
    t.throws(Map)
  
    var m = new Map()
  
    t.equal(m.size, 0)
  
    m.set(1, '1 string')
    t.equal(m.get(1), '1 string')
    t.equal(m.size, 1)
    m.size = 1000
    t.equal(m.size, 1)
    m.size = 0
    t.equal(m.size, 1)
  
    m = new Map([[1, 'number 1'], ['1', 'string 1']])
    t.equal(m.get(1), 'number 1')
    t.equal(m.get('1'), 'string 1')
    t.equal(m.size, 2)
  
    m = new Map(m)
    t.equal(m.get(1), 'number 1')
    t.equal(m.get('1'), 'string 1')
    t.equal(m.size, 2)
  
    var akey = {}
    var bkey = {}
    m.set(akey, { some: 'data' })
    m.set(bkey, { some: 'other data' })
    t.same(m.get(akey), { some: 'data' })
    t.same(m.get(bkey), { some: 'other data' })
    t.equal(m.size, 4)
  
    var x = /x/
    var y = /x/
    m.set(x, 'x regex')
    m.set(y, 'y regex')
    t.equal(m.get(x), 'x regex')
    m.set(x, 'x again')
    t.equal(m.get(x), 'x again')
    t.equal(m.size, 6)
  
    m.set(NaN, 'not a number')
    t.equal(m.get(NaN), 'not a number')
    m.set(NaN, 'it is a ' + typeof NaN)
    t.equal(m.get(NaN), 'it is a number')
    m.set('NaN', 'stringie nan')
    t.equal(m.get(NaN), 'it is a number')
    t.equal(m.get('NaN'), 'stringie nan')
    t.equal(m.size, 8)
  
    m.delete(NaN)
    t.equal(m.get(NaN), undefined)
    t.equal(m.size, 7)
  
    var expect = [
      { value: 'number 1', key: 1 },
      { value: 'string 1', key: '1' },
      { value: { some: 'data' }, key: {} },
      { value: { some: 'other data' }, key: {} },
      { value: 'x again', key: /x/ },
      { value: 'y regex', key: /x/ },
      { value: 'stringie nan', key: 'NaN' }
    ]
    var actual = []
  
    m.forEach(function (value, key) {
      actual.push({ value: value, key: key })
    })
    t.same(actual, expect)
  
    m.clear()
    t.equal(m.size, 0)
  }