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122 lines
2.0 KiB
122 lines
2.0 KiB
var tape = require('tape') |
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var thunky = require('./') |
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tape('run only once', function (t) { |
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t.plan(3) |
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var ran = 0 |
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var run = thunky(function (cb) { |
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ran++ |
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cb() |
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}) |
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run(function () { |
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t.same(ran, 1, 'ran once') |
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}) |
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run(function () { |
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t.same(ran, 1, 'ran once') |
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}) |
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run(function () { |
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t.same(ran, 1, 'ran once') |
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}) |
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}) |
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tape('run only once async', function (t) { |
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t.plan(3) |
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var ran = 0 |
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var run = thunky(function (cb) { |
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process.nextTick(function () { |
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ran++ |
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cb() |
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}) |
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}) |
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run(function () { |
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t.same(ran, 1, 'ran once') |
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}) |
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run(function () { |
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t.same(ran, 1, 'ran once') |
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}) |
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run(function () { |
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t.same(ran, 1, 'ran once') |
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}) |
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}) |
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tape('re-run on error', function (t) { |
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t.plan(3) |
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var ran = 0 |
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var run = thunky(function (cb) { |
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ran++ |
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cb(new Error('stop')) |
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}) |
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run(function () { |
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t.same(ran, 1, 'ran once') |
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run(function () { |
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t.same(ran, 2, 'ran once') |
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run(function () { |
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t.same(ran, 3, 'ran once') |
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}) |
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}) |
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}) |
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}) |
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tape('pass arguments', function (t) { |
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t.plan(6) |
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var ran = 0 |
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var run = thunky(function (fn) { |
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ran++ |
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fn({ hello: 'world' }) |
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}) |
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run(function (val) { |
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t.same(ran, 1, 'ran once') |
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t.same(val, { hello: 'world' }) |
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run(function (val) { |
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t.same(ran, 1, 'ran once') |
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t.same(val, { hello: 'world' }) |
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run(function (val) { |
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t.same(ran, 1, 'ran once') |
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t.same(val, { hello: 'world' }) |
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}) |
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}) |
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}) |
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}) |
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tape('callback is optional', function (t) { |
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t.plan(2) |
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var ran = 0 |
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var run = thunky(function (fn) { |
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ran++ |
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fn({ hello: 'world' }) |
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}) |
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run() |
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run(function (val) { |
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t.same(ran, 1, 'ran once') |
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t.same(val, { hello: 'world' }) |
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}) |
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}) |
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tape('always async', function (t) { |
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t.plan(2) |
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var run = thunky(function (cb) { |
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process.nextTick(cb) |
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}) |
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var sync = true |
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run(function () { |
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t.ok(!sync, 'not sync') |
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var innerSync = true |
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run(function () { |
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t.ok(!innerSync, 'not sync') |
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}) |
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innerSync = false |
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}) |
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sync = false |
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})
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