[6a3a178] | 1 | 'use strict'
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| 2 |
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| 3 | /* eslint-disable no-var */
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| 4 |
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| 5 | var test = require('tape')
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| 6 | var buildQueue = require('../')
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| 7 |
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| 8 | test('concurrency', function (t) {
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| 9 | t.plan(2)
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| 10 | t.throws(buildQueue.bind(null, worker, 0))
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| 11 | t.doesNotThrow(buildQueue.bind(null, worker, 1))
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| 12 |
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| 13 | function worker (arg, cb) {
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| 14 | cb(null, true)
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| 15 | }
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| 16 | })
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| 17 |
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| 18 | test('worker execution', function (t) {
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| 19 | t.plan(3)
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| 20 |
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| 21 | var queue = buildQueue(worker, 1)
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| 22 |
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| 23 | queue.push(42, function (err, result) {
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| 24 | t.error(err, 'no error')
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| 25 | t.equal(result, true, 'result matches')
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| 26 | })
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| 27 |
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| 28 | function worker (arg, cb) {
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| 29 | t.equal(arg, 42)
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| 30 | cb(null, true)
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| 31 | }
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| 32 | })
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| 33 |
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| 34 | test('limit', function (t) {
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| 35 | t.plan(4)
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| 36 |
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| 37 | var expected = [10, 0]
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| 38 | var queue = buildQueue(worker, 1)
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| 39 |
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| 40 | queue.push(10, result)
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| 41 | queue.push(0, result)
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| 42 |
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| 43 | function result (err, arg) {
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| 44 | t.error(err, 'no error')
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| 45 | t.equal(arg, expected.shift(), 'the result matches')
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| 46 | }
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| 47 |
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| 48 | function worker (arg, cb) {
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| 49 | setTimeout(cb, arg, null, arg)
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| 50 | }
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| 51 | })
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| 52 |
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| 53 | test('multiple executions', function (t) {
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| 54 | t.plan(15)
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| 55 |
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| 56 | var queue = buildQueue(worker, 1)
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| 57 | var toExec = [1, 2, 3, 4, 5]
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| 58 | var count = 0
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| 59 |
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| 60 | toExec.forEach(function (task) {
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| 61 | queue.push(task, done)
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| 62 | })
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| 63 |
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| 64 | function done (err, result) {
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| 65 | t.error(err, 'no error')
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| 66 | t.equal(result, toExec[count - 1], 'the result matches')
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| 67 | }
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| 68 |
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| 69 | function worker (arg, cb) {
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| 70 | t.equal(arg, toExec[count], 'arg matches')
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| 71 | count++
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| 72 | setImmediate(cb, null, arg)
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| 73 | }
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| 74 | })
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| 75 |
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| 76 | test('multiple executions, one after another', function (t) {
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| 77 | t.plan(15)
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| 78 |
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| 79 | var queue = buildQueue(worker, 1)
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| 80 | var toExec = [1, 2, 3, 4, 5]
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| 81 | var count = 0
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| 82 |
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| 83 | queue.push(toExec[0], done)
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| 84 |
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| 85 | function done (err, result) {
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| 86 | t.error(err, 'no error')
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| 87 | t.equal(result, toExec[count - 1], 'the result matches')
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| 88 | if (count < toExec.length) {
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| 89 | queue.push(toExec[count], done)
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| 90 | }
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| 91 | }
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| 92 |
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| 93 | function worker (arg, cb) {
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| 94 | t.equal(arg, toExec[count], 'arg matches')
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| 95 | count++
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| 96 | setImmediate(cb, null, arg)
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| 97 | }
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| 98 | })
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| 99 |
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| 100 | test('set this', function (t) {
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| 101 | t.plan(3)
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| 102 |
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| 103 | var that = {}
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| 104 | var queue = buildQueue(that, worker, 1)
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| 105 |
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| 106 | queue.push(42, function (err, result) {
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| 107 | t.error(err, 'no error')
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| 108 | t.equal(this, that, 'this matches')
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| 109 | })
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| 110 |
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| 111 | function worker (arg, cb) {
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| 112 | t.equal(this, that, 'this matches')
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| 113 | cb(null, true)
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| 114 | }
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| 115 | })
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| 116 |
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| 117 | test('drain', function (t) {
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| 118 | t.plan(4)
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| 119 |
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| 120 | var queue = buildQueue(worker, 1)
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| 121 | var worked = false
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| 122 |
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| 123 | queue.push(42, function (err, result) {
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| 124 | t.error(err, 'no error')
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| 125 | t.equal(result, true, 'result matches')
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| 126 | })
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| 127 |
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| 128 | queue.drain = function () {
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| 129 | t.equal(true, worked, 'drained')
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| 130 | }
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| 131 |
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| 132 | function worker (arg, cb) {
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| 133 | t.equal(arg, 42)
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| 134 | worked = true
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| 135 | setImmediate(cb, null, true)
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| 136 | }
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| 137 | })
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| 138 |
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| 139 | test('pause && resume', function (t) {
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| 140 | t.plan(7)
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| 141 |
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| 142 | var queue = buildQueue(worker, 1)
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| 143 | var worked = false
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| 144 |
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| 145 | t.notOk(queue.paused, 'it should not be paused')
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| 146 |
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| 147 | queue.pause()
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| 148 |
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| 149 | queue.push(42, function (err, result) {
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| 150 | t.error(err, 'no error')
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| 151 | t.equal(result, true, 'result matches')
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| 152 | })
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| 153 |
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| 154 | t.notOk(worked, 'it should be paused')
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| 155 | t.ok(queue.paused, 'it should be paused')
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| 156 |
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| 157 | queue.resume()
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| 158 | queue.resume() // second resume is a no-op
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| 159 |
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| 160 | t.notOk(queue.paused, 'it should not be paused')
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| 161 |
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| 162 | function worker (arg, cb) {
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| 163 | t.equal(arg, 42)
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| 164 | worked = true
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| 165 | cb(null, true)
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| 166 | }
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| 167 | })
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| 168 |
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| 169 | test('pause in flight && resume', function (t) {
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| 170 | t.plan(9)
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| 171 |
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| 172 | var queue = buildQueue(worker, 1)
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| 173 | var expected = [42, 24]
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| 174 |
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| 175 | t.notOk(queue.paused, 'it should not be paused')
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| 176 |
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| 177 | queue.push(42, function (err, result) {
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| 178 | t.error(err, 'no error')
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| 179 | t.equal(result, true, 'result matches')
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| 180 | t.ok(queue.paused, 'it should be paused')
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| 181 | process.nextTick(function () { queue.resume() })
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| 182 | })
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| 183 |
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| 184 | queue.push(24, function (err, result) {
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| 185 | t.error(err, 'no error')
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| 186 | t.equal(result, true, 'result matches')
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| 187 | t.notOk(queue.paused, 'it should not be paused')
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| 188 | })
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| 189 |
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| 190 | queue.pause()
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| 191 |
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| 192 | function worker (arg, cb) {
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| 193 | t.equal(arg, expected.shift())
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| 194 | process.nextTick(function () { cb(null, true) })
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| 195 | }
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| 196 | })
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| 197 |
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| 198 | test('altering concurrency', function (t) {
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| 199 | t.plan(7)
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| 200 |
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| 201 | var queue = buildQueue(worker, 1)
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| 202 | var count = 0
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| 203 |
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| 204 | queue.pause()
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| 205 |
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| 206 | queue.push(24, workDone)
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| 207 | queue.push(24, workDone)
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| 208 |
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| 209 | queue.concurrency = 2
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| 210 |
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| 211 | queue.resume()
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| 212 |
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| 213 | t.equal(queue.running(), 2, '2 jobs running')
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| 214 |
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| 215 | function workDone (err, result) {
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| 216 | t.error(err, 'no error')
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| 217 | t.equal(result, true, 'result matches')
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| 218 | }
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| 219 |
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| 220 | function worker (arg, cb) {
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| 221 | t.equal(0, count, 'works in parallel')
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| 222 | setImmediate(function () {
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| 223 | count++
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| 224 | cb(null, true)
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| 225 | })
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| 226 | }
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| 227 | })
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| 228 |
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| 229 | test('idle()', function (t) {
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| 230 | t.plan(12)
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| 231 |
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| 232 | var queue = buildQueue(worker, 1)
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| 233 |
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| 234 | t.ok(queue.idle(), 'queue is idle')
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| 235 |
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| 236 | queue.push(42, function (err, result) {
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| 237 | t.error(err, 'no error')
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| 238 | t.equal(result, true, 'result matches')
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| 239 | t.notOk(queue.idle(), 'queue is not idle')
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| 240 | })
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| 241 |
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| 242 | queue.push(42, function (err, result) {
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| 243 | t.error(err, 'no error')
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| 244 | t.equal(result, true, 'result matches')
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| 245 | // it will go idle after executing this function
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| 246 | setImmediate(function () {
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| 247 | t.ok(queue.idle(), 'queue is now idle')
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| 248 | })
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| 249 | })
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| 250 |
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| 251 | t.notOk(queue.idle(), 'queue is not idle')
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| 252 |
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| 253 | function worker (arg, cb) {
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| 254 | t.notOk(queue.idle(), 'queue is not idle')
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| 255 | t.equal(arg, 42)
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| 256 | setImmediate(cb, null, true)
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| 257 | }
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| 258 | })
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| 259 |
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| 260 | test('saturated', function (t) {
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| 261 | t.plan(9)
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| 262 |
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| 263 | var queue = buildQueue(worker, 1)
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| 264 | var preworked = 0
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| 265 | var worked = 0
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| 266 |
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| 267 | queue.saturated = function () {
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| 268 | t.pass('saturated')
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| 269 | t.equal(preworked, 1, 'started 1 task')
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| 270 | t.equal(worked, 0, 'worked zero task')
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| 271 | }
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| 272 |
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| 273 | queue.push(42, done)
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| 274 | queue.push(42, done)
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| 275 |
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| 276 | function done (err, result) {
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| 277 | t.error(err, 'no error')
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| 278 | t.equal(result, true, 'result matches')
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| 279 | }
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| 280 |
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| 281 | function worker (arg, cb) {
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| 282 | t.equal(arg, 42)
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| 283 | preworked++
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| 284 | setImmediate(function () {
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| 285 | worked++
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| 286 | cb(null, true)
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| 287 | })
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| 288 | }
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| 289 | })
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| 290 |
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| 291 | test('length', function (t) {
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| 292 | t.plan(7)
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| 293 |
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| 294 | var queue = buildQueue(worker, 1)
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| 295 |
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| 296 | t.equal(queue.length(), 0, 'nothing waiting')
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| 297 | queue.push(42, done)
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| 298 | t.equal(queue.length(), 0, 'nothing waiting')
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| 299 | queue.push(42, done)
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| 300 | t.equal(queue.length(), 1, 'one task waiting')
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| 301 | queue.push(42, done)
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| 302 | t.equal(queue.length(), 2, 'two tasks waiting')
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| 303 |
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| 304 | function done (err, result) {
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| 305 | t.error(err, 'no error')
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| 306 | }
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| 307 |
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| 308 | function worker (arg, cb) {
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| 309 | setImmediate(function () {
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| 310 | cb(null, true)
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| 311 | })
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| 312 | }
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| 313 | })
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| 314 |
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| 315 | test('getQueue', function (t) {
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| 316 | t.plan(10)
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| 317 |
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| 318 | var queue = buildQueue(worker, 1)
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| 319 |
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| 320 | t.equal(queue.getQueue().length, 0, 'nothing waiting')
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| 321 | queue.push(42, done)
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| 322 | t.equal(queue.getQueue().length, 0, 'nothing waiting')
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| 323 | queue.push(42, done)
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| 324 | t.equal(queue.getQueue().length, 1, 'one task waiting')
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| 325 | t.equal(queue.getQueue()[0], 42, 'should be equal')
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| 326 | queue.push(43, done)
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| 327 | t.equal(queue.getQueue().length, 2, 'two tasks waiting')
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| 328 | t.equal(queue.getQueue()[0], 42, 'should be equal')
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| 329 | t.equal(queue.getQueue()[1], 43, 'should be equal')
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| 330 |
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| 331 | function done (err, result) {
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| 332 | t.error(err, 'no error')
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| 333 | }
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| 334 |
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| 335 | function worker (arg, cb) {
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| 336 | setImmediate(function () {
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| 337 | cb(null, true)
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| 338 | })
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| 339 | }
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| 340 | })
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| 341 |
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| 342 | test('unshift', function (t) {
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| 343 | t.plan(8)
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| 344 |
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| 345 | var queue = buildQueue(worker, 1)
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| 346 | var expected = [1, 2, 3, 4]
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| 347 |
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| 348 | queue.push(1, done)
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| 349 | queue.push(4, done)
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| 350 | queue.unshift(3, done)
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| 351 | queue.unshift(2, done)
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| 352 |
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| 353 | function done (err, result) {
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| 354 | t.error(err, 'no error')
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| 355 | }
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| 356 |
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| 357 | function worker (arg, cb) {
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| 358 | t.equal(expected.shift(), arg, 'tasks come in order')
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| 359 | setImmediate(function () {
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| 360 | cb(null, true)
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| 361 | })
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| 362 | }
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| 363 | })
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| 364 |
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| 365 | test('unshift && empty', function (t) {
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| 366 | t.plan(2)
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| 367 |
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| 368 | var queue = buildQueue(worker, 1)
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| 369 | var completed = false
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| 370 |
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| 371 | queue.pause()
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| 372 |
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| 373 | queue.empty = function () {
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| 374 | t.notOk(completed, 'the task has not completed yet')
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| 375 | }
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| 376 |
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| 377 | queue.unshift(1, done)
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| 378 |
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| 379 | queue.resume()
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| 380 |
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| 381 | function done (err, result) {
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| 382 | completed = true
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| 383 | t.error(err, 'no error')
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| 384 | }
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| 385 |
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| 386 | function worker (arg, cb) {
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| 387 | setImmediate(function () {
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| 388 | cb(null, true)
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| 389 | })
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| 390 | }
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| 391 | })
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| 392 |
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| 393 | test('push && empty', function (t) {
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| 394 | t.plan(2)
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| 395 |
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| 396 | var queue = buildQueue(worker, 1)
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| 397 | var completed = false
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| 398 |
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| 399 | queue.pause()
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| 400 |
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| 401 | queue.empty = function () {
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| 402 | t.notOk(completed, 'the task has not completed yet')
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| 403 | }
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| 404 |
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| 405 | queue.push(1, done)
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| 406 |
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| 407 | queue.resume()
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| 408 |
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| 409 | function done (err, result) {
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| 410 | completed = true
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| 411 | t.error(err, 'no error')
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| 412 | }
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| 413 |
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| 414 | function worker (arg, cb) {
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| 415 | setImmediate(function () {
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| 416 | cb(null, true)
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| 417 | })
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| 418 | }
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| 419 | })
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| 420 |
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| 421 | test('kill', function (t) {
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| 422 | t.plan(5)
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| 423 |
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| 424 | var queue = buildQueue(worker, 1)
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| 425 | var expected = [1]
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| 426 |
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| 427 | var predrain = queue.drain
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| 428 |
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| 429 | queue.drain = function drain () {
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| 430 | t.fail('drain should never be called')
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| 431 | }
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| 432 |
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| 433 | queue.push(1, done)
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| 434 | queue.push(4, done)
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| 435 | queue.unshift(3, done)
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| 436 | queue.unshift(2, done)
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| 437 | queue.kill()
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| 438 |
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| 439 | function done (err, result) {
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| 440 | t.error(err, 'no error')
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| 441 | setImmediate(function () {
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| 442 | t.equal(queue.length(), 0, 'no queued tasks')
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| 443 | t.equal(queue.running(), 0, 'no running tasks')
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| 444 | t.equal(queue.drain, predrain, 'drain is back to default')
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| 445 | })
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| 446 | }
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| 447 |
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| 448 | function worker (arg, cb) {
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| 449 | t.equal(expected.shift(), arg, 'tasks come in order')
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| 450 | setImmediate(function () {
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| 451 | cb(null, true)
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| 452 | })
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| 453 | }
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| 454 | })
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| 455 |
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| 456 | test('killAndDrain', function (t) {
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| 457 | t.plan(6)
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| 458 |
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| 459 | var queue = buildQueue(worker, 1)
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| 460 | var expected = [1]
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| 461 |
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| 462 | var predrain = queue.drain
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| 463 |
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| 464 | queue.drain = function drain () {
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| 465 | t.pass('drain has been called')
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| 466 | }
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| 467 |
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| 468 | queue.push(1, done)
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| 469 | queue.push(4, done)
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| 470 | queue.unshift(3, done)
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| 471 | queue.unshift(2, done)
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| 472 | queue.killAndDrain()
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| 473 |
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| 474 | function done (err, result) {
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| 475 | t.error(err, 'no error')
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| 476 | setImmediate(function () {
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| 477 | t.equal(queue.length(), 0, 'no queued tasks')
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| 478 | t.equal(queue.running(), 0, 'no running tasks')
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| 479 | t.equal(queue.drain, predrain, 'drain is back to default')
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| 480 | })
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| 481 | }
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| 482 |
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| 483 | function worker (arg, cb) {
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| 484 | t.equal(expected.shift(), arg, 'tasks come in order')
|
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| 485 | setImmediate(function () {
|
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| 486 | cb(null, true)
|
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| 487 | })
|
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| 488 | }
|
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| 489 | })
|
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| 490 |
|
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| 491 | test('pause && idle', function (t) {
|
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| 492 | t.plan(11)
|
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| 493 |
|
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| 494 | var queue = buildQueue(worker, 1)
|
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| 495 | var worked = false
|
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| 496 |
|
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| 497 | t.notOk(queue.paused, 'it should not be paused')
|
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| 498 | t.ok(queue.idle(), 'should be idle')
|
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| 499 |
|
---|
| 500 | queue.pause()
|
---|
| 501 |
|
---|
| 502 | queue.push(42, function (err, result) {
|
---|
| 503 | t.error(err, 'no error')
|
---|
| 504 | t.equal(result, true, 'result matches')
|
---|
| 505 | })
|
---|
| 506 |
|
---|
| 507 | t.notOk(worked, 'it should be paused')
|
---|
| 508 | t.ok(queue.paused, 'it should be paused')
|
---|
| 509 | t.notOk(queue.idle(), 'should not be idle')
|
---|
| 510 |
|
---|
| 511 | queue.resume()
|
---|
| 512 |
|
---|
| 513 | t.notOk(queue.paused, 'it should not be paused')
|
---|
| 514 | t.notOk(queue.idle(), 'it should not be idle')
|
---|
| 515 |
|
---|
| 516 | function worker (arg, cb) {
|
---|
| 517 | t.equal(arg, 42)
|
---|
| 518 | worked = true
|
---|
| 519 | process.nextTick(cb.bind(null, null, true))
|
---|
| 520 | process.nextTick(function () {
|
---|
| 521 | t.ok(queue.idle(), 'is should be idle')
|
---|
| 522 | })
|
---|
| 523 | }
|
---|
| 524 | })
|
---|
| 525 |
|
---|
| 526 | test('push without cb', function (t) {
|
---|
| 527 | t.plan(1)
|
---|
| 528 |
|
---|
| 529 | var queue = buildQueue(worker, 1)
|
---|
| 530 |
|
---|
| 531 | queue.push(42)
|
---|
| 532 |
|
---|
| 533 | function worker (arg, cb) {
|
---|
| 534 | t.equal(arg, 42)
|
---|
| 535 | cb()
|
---|
| 536 | }
|
---|
| 537 | })
|
---|
| 538 |
|
---|
| 539 | test('unshift without cb', function (t) {
|
---|
| 540 | t.plan(1)
|
---|
| 541 |
|
---|
| 542 | var queue = buildQueue(worker, 1)
|
---|
| 543 |
|
---|
| 544 | queue.unshift(42)
|
---|
| 545 |
|
---|
| 546 | function worker (arg, cb) {
|
---|
| 547 | t.equal(arg, 42)
|
---|
| 548 | cb()
|
---|
| 549 | }
|
---|
| 550 | })
|
---|
| 551 |
|
---|
| 552 | test('push with worker throwing error', function (t) {
|
---|
| 553 | t.plan(5)
|
---|
| 554 | var q = buildQueue(function (task, cb) {
|
---|
| 555 | cb(new Error('test error'), null)
|
---|
| 556 | }, 1)
|
---|
| 557 | q.error(function (err, task) {
|
---|
| 558 | t.ok(err instanceof Error, 'global error handler should catch the error')
|
---|
| 559 | t.match(err.message, /test error/, 'error message should be "test error"')
|
---|
| 560 | t.equal(task, 42, 'The task executed should be passed')
|
---|
| 561 | })
|
---|
| 562 | q.push(42, function (err) {
|
---|
| 563 | t.ok(err instanceof Error, 'push callback should catch the error')
|
---|
| 564 | t.match(err.message, /test error/, 'error message should be "test error"')
|
---|
| 565 | })
|
---|
| 566 | })
|
---|