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feture: promise.mapSeries

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harttle
2016-10-31 23:45:41 +08:00
parent 6dd836f157
commit 9961afa3dd
3 changed files with 69 additions and 12 deletions
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test/util/promise.js
+46 -5
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@@ -7,12 +7,12 @@ chai.use(require("sinon-chai"));
var P = require('../../src/util/promise.js');
describe('util/promise', function() {
describe('.someSeries()', function() {
describe('.anySeries()', function() {
it('should resolve in series', function() {
var spy1 = sinon.spy(),
spy2 = sinon.spy();
return P
.someSeries(
.anySeries(
['first', 'second'],
(item, idx) => new Promise(function(resolve, reject) {
if (idx === 0) {
@@ -28,18 +28,18 @@ describe('util/promise', function() {
.then(() => expect(spy2).to.have.been.calledAfter(spy1));
});
it('should reject when all rejected', function() {
var p = P.someSeries(['first', 'second', 'third'],
var p = P.anySeries(['first', 'second', 'third'],
item => Promise.reject(new Error(item)));
return expect(p).to.be.rejectedWith("third");
});
it('should resolve the value that first callback resolved', () => {
var p = P.someSeries(['first', 'second'],
var p = P.anySeries(['first', 'second'],
item => Promise.resolve(item));
return expect(p).to.eventually.equal('first');
});
it('should not call rest of callbacks once resolved', () => {
var spy = sinon.spy();
return P.someSeries(['first', 'second'], (item, idx) => {
return P.anySeries(['first', 'second'], (item, idx) => {
if (idx > 0) {
spy();
}
@@ -48,4 +48,45 @@ describe('util/promise', function() {
.then(() => expect(spy).to.not.have.been.called);
});
});
describe('.mapSeries()', function() {
it('should resolve when all resolved', function() {
var p = P.mapSeries(['first', 'second', 'third'],
item => Promise.resolve(item));
return expect(p).to.eventually.deep.equal(['first', 'second', "third"]);
});
it('should reject with the error that first callback rejected', () => {
var p = P.mapSeries(['first', 'second'],
item => Promise.reject(item));
return expect(p).to.rejectedWith('first');
});
it('should resolve in series', function() {
var spy1 = sinon.spy(),
spy2 = sinon.spy();
return P
.mapSeries(
['first', 'second'],
(item, idx) => new Promise(function(resolve, reject) {
if (idx === 0) {
setTimeout(function() {
spy1();
resolve('first cb');
}, 10);
} else {
spy2();
resolve('foo');
}
}))
.then(() => expect(spy2).to.have.been.calledAfter(spy1));
});
it('should not call rest of callbacks once rejected', () => {
var spy = sinon.spy();
return P.mapSeries(['first', 'second'], (item, idx) => {
if (idx > 0) {
spy();
}
return Promise.reject(new Error(item));
})
.catch(() => expect(spy).to.not.have.been.called);
});
});
});