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test.js
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test.js
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var test = require('tape')
var waitAll = require('./')
function delay (ms) {
return new Promise(function (resolve) {
setTimeout(resolve, ms)
})
}
test('checks argument type', function (t) {
t.plan(3)
waitAll(null).catch(function (err) {
t.ok(err)
})
waitAll('abc').catch(function (err) {
t.ok(err)
})
waitAll({ whatever: 'lol' }).catch(function (err) {
t.ok(err)
})
})
test('collects resolution values like Promise.all', function (t) {
waitAll([
Promise.resolve(1),
Promise.resolve(2),
Promise.resolve(3)
]).then(function (values) {
t.equal(values.shift(), 1)
t.equal(values.shift(), 2)
t.equal(values.shift(), 3)
t.end()
})
})
test('rejects if any promises reject', function (t) {
waitAll([
Promise.resolve(1),
Promise.reject(2),
Promise.resolve(3)
]).then(function (values) {
t.fail()
}, function (err) {
t.equal(err, 2)
t.end()
})
})
test('waits for promises to settle before rejecting', function (t) {
var didSettle = false
waitAll([
Promise.resolve(1),
Promise.reject(2),
delay(50).then(function () { didSettle = true })
]).then(function (values) {
t.fail()
}, function (err) {
t.equal(err, 2)
t.ok(didSettle)
t.end()
})
})
test('resolves if there are no promises', function (t) {
waitAll([]).then(function () {
t.pass('should resolve if there are no promises')
t.end()
})
})