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test.js
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test.js
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var tap = require('tap')
var promiseLibs = ['yaku', 'bluebird', 'q', 'promise', 'when'].map(function (name) {
return {
name: name,
lib: require(name)
}
})
var testValues = [true, false, null, undefined, 0, -12345, 123.45, '', 'hello', {}, {then: 1}, [], Date]
if (typeof Promise === 'function') {
promiseLibs.push({
name: 'native', lib: Promise
})
}
promiseLibs.push({
name: 'es6-promise', lib: require('es6-promise').Promise
})
var isPromise = require('./')
var isConstructor = isPromise.isConstructor
tap.test('Is constructor', function (t) {
promiseLibs.forEach(function (lib) {
t.ok(isConstructor(lib.lib), lib.name)
t.notOk(isPromise(lib.lib), lib.name)
})
testValues.forEach(function (v) { t.notOk(isConstructor(v), v) })
t.end()
})
tap.test('Is promise', function (t) {
promiseLibs.forEach(function (lib) {
t.ok(isPromise(lib.lib.resolve()), lib.name)
t.notOk(isConstructor(lib.lib.resolve()), lib.name)
})
testValues.forEach(function (v) { t.notOk(isPromise(v), v) })
var promiseFun = function () {}
t.notOk(isPromise(promiseFun), 'function')
promiseFun.then = function () {}
t.ok(isPromise(promiseFun), 'function with then method')
t.end()
})