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我有一个模块，我输出并有一个方法editHeroImage，我试图使用mocha,chai和sinon测试。模块有两个作为参数传递的对象，connection和queries。这些是mySql对象，其中一个包含与数据库的连接，另一个包含在其单独模块中定义的查询字符串。我正在导出并试图测试的expObj是一个“帮手”模块。nodejs - 测试失败但回调被调用
我已经成功测试了此模块的其他方法，与我试图测试此方法的方式相同，但是，当我遇到由于某种原因而使用async模块的方法时，我的测试不再按预期运行。我想知道在这种情况下我是否缺少了一些东西，因为我测试了其他模块和方法，它们也使用了async，但没有遇到这种情况。
当我运行测试时，它记录“你好！”如预期的那样，但是称为callbackSpy的断言失败。
我在这里失去了我的想法！请帮忙！到底是怎么回事？试衣之间是否会有污染？被测
方法：
expObj.editHeroImage = function(connection, queries, postId, postData, callback) {
async.waterfall([
function(next) {
var qString = queries.getSinglePostById();
connection.query(qString, [postId], function(err, results) {
if (err) {
return next(err);
}
if (!results.length) {
console.log('NO POST FOUND WITH ID ' + postId);
return callback();
}
next(null, results[0].hero_image);
});
},
function(heroImageId, next) {
if (!heroImageId) {
console.log('HERO IMAGE IS NEW - NEXT TICK!');
return next();
}
// Delete resized images of hero image
var queryStr = queries.deleteResizedImages();
var resizedVals = [heroImageId];
connection.query(queryStr, resizedVals, function(err) {
if (err) {
return callback(err);
}
console.log('DELETED RESIZED IMAGES OF HERO IMAGE ' + heroImageId);
var qString = queries.updateHeroImagePath();
var values = [postData.hero_image, heroImageId];
return connection.query(qString, values, function(err, results) {
if (err) {
return next(err);
}
console.log('UPDATED HERO IMAGE ' + heroImageId + ' WITH PATH ' + postData.hero_image);
next('break');
});
});
},
function addHeroImage(next) {
var qString = queries.insertImage();
var values = [postData.hero_image, postId];
connection.query(qString, values, function(err, results) {
if (err) {
return next(err);
}
next(null, results.insertId);
});
},
function addHeroImagePathToPost(heroImageId, next) {
var qString = queries.saveHeroImageId();
var values = [heroImageId, postId];
connection.query(qString, values, function(err) {
if (err) {
return next(err);
}
next();
});
}
], function(err) {
if (err && err !== 'break') {
return callback(err);
}
console.log('HELLO!');
callback(null);
});
};
测试，与设置：
'use strict';
var chai = require('chai');
var sinonChai = require("sinon-chai");
var proxyquire = require('proxyquire');
var sinon = require('sinon');
chai.use(sinonChai);
var expect = chai.expect;
describe('HELPERS', function() {
var testedModule,
callbackSpy,
fakeConnectionObj,
fakeQueriesObj,
fakePost,
fakeSnakeCaseObj,
queryStub,
connectionStub,
manageStub,
fakeCamelCaseObj;
beforeEach(function() {
fakePost = {};
fakeConnectionObj = {};
fakeQueriesObj = {
getPostIdFromImage: function() {},
insertResizedImages: function() {},
createPost: function() {},
getPostImages: function() {},
getPostsAlternativesImages: function() {},
getSinglePostById: function() {},
getAllImages: function() {},
insertImage: function() {},
deleteMainImage: function() {},
deleteResizedImages: function() {},
updateHeroImagePath: function() {},
saveHeroImageId: function() {}
};
afterEach(function() {
queryStub.resetBehavior();
});
fakeSnakeCaseObj = {
sub_title: '123',
hero_image: '456'
};
fakeCamelCaseObj = {
subTitle: '123',
heroImage: '456'
};
callbackSpy = sinon.spy();
queryStub = sinon.stub();
manageStub = sinon.stub();
connectionStub = {query: queryStub};
testedModule = proxyquire('./../../../../lib/modules/mySql/workers/helpers', {
'./../../../factories/notification-service': {
select: function() {
return {manageSns: manageStub};
}
}
});
});
it('edits hero image', function() {
var _post = {
id: '123',
title: 'vf',
sub_title: 'vf',
slug: 'vf',
reading_time: 4,
created_at: '123',
published_at: '123',
deleted_on: false,
hero_image: 'hero_image_path'
};
var _postId = '123';
queryStub.onCall(0).callsArgWith(2, null, [{hero_image: '55'}]);
queryStub.onCall(1).callsArgWith(2, null);
queryStub.onCall(2).callsArgWith(2, null);
testedModule.editHeroImage(connectionStub, fakeQueriesObj, _postId, _post, function() {
console.log(arguments); // --> {'0': null} as expected
callbackSpy.apply(null, arguments);
});
expect(callbackSpy).has.been.calledWith(null);
});
});
事实上，你是正确的是它是一个时间问题。然而，使用您在断言中包装断言的建议并使用before函数来设置测试会导致我的存根不再正常工作。然而，考虑到你对时间考虑的建议，我设法通过在我的测试套装中使用'done'回调来解决问题。 – hyprstack