Gecko [ unitednationsplay.com ]

Name	Size	Permission	Date
.travis.yml	69 B	-rw-r--r--	1985-10-26 08:15
LICENSE	1.05 KB	-rw-r--r--	1985-10-26 08:15
README.md	2.14 KB	-rw-r--r--	1985-10-26 08:15
index.js	1.03 KB	-rw-r--r--	1985-10-26 08:15
package.json	1.43 KB	-rw-r--r--	2021-02-04 21:24
test.js	2.01 KB	-rw-r--r--	1985-10-26 08:15

Rename

var tape = require('tape')
var thunky = require('./')

tape('run only once', function (t) {
  t.plan(3)

var ran = 0
  var run = thunky(function (cb) {
    ran++
    cb()
  })

run(function () {
    t.same(ran, 1, 'ran once')
  })
  run(function () {
    t.same(ran, 1, 'ran once')
  })
  run(function () {
    t.same(ran, 1, 'ran once')
  })
})

tape('run only once async', function (t) {
  t.plan(3)

var ran = 0
  var run = thunky(function (cb) {
    process.nextTick(function () {
      ran++
      cb()
    })
  })

run(function () {
    t.same(ran, 1, 'ran once')
  })
  run(function () {
    t.same(ran, 1, 'ran once')
  })
  run(function () {
    t.same(ran, 1, 'ran once')
  })
})

tape('re-run on error', function (t) {
  t.plan(3)

var ran = 0
  var run = thunky(function (cb) {
    ran++
    cb(new Error('stop'))
  })

run(function () {
    t.same(ran, 1, 'ran once')
    run(function () {
      t.same(ran, 2, 'ran once')
      run(function () {
        t.same(ran, 3, 'ran once')
      })
    })
  })
})

tape('pass arguments', function (t) {
  t.plan(6)

var ran = 0
  var run = thunky(function (fn) {
    ran++
    fn({ hello: 'world' })
  })

run(function (val) {
    t.same(ran, 1, 'ran once')
    t.same(val, { hello: 'world' })
    run(function (val) {
      t.same(ran, 1, 'ran once')
      t.same(val, { hello: 'world' })
      run(function (val) {
        t.same(ran, 1, 'ran once')
        t.same(val, { hello: 'world' })
      })
    })
  })
})

tape('callback is optional', function (t) {
  t.plan(2)

var ran = 0
  var run = thunky(function (fn) {
    ran++
    fn({ hello: 'world' })
  })

run()
  run(function (val) {
    t.same(ran, 1, 'ran once')
    t.same(val, { hello: 'world' })
  })
})

tape('always async', function (t) {
  t.plan(2)

var run = thunky(function (cb) {
    process.nextTick(cb)
  })

var sync = true
  run(function () {
    t.ok(!sync, 'not sync')
    var innerSync = true
    run(function () {
      t.ok(!innerSync, 'not sync')
    })
    innerSync = false
  })
  sync = false
})