我正在尝试使用茉莉花为环回模型编写单元测试。我的模型具有通常的 CRUD 端点,但我定义了一个自定义的“/products/:id/upload”端点,它需要一个带有文件的表单。
我的模型看起来像
'use strict';
var loopback = require('loopback');
var ProductSchema = {
location: {
type: String,
required: true
},
version: {
type: String,
required: true
},
id: { type: Number, id: 1, generated: true }
};
var opts = {
strict: true
};
var dataSource = loopback.createDataSource({
connector: loopback.Memory
});
var Product = dataSource.createModel('Product', ProductSchema, opts);
Product.beforeRemote('upload', function(ctx){
var uploader = function(req, res){
// parse a multipart form
res({
result:'success'
});
};
function createProduct(uploaderResult){
// create a product out of the uploaded file
ctx.res.send({
result: uploaderResult.result
});
}
uploader.upload(ctx.req, createProduct);
});
Product.upload = function () {
// empty function - all the logic takes place inside before remote
};
loopback.remoteMethod(
Product.upload,
{
accepts : [{arg: 'uploadedFiles', http: function(ctx){
return function() {
return { files : ctx.req.body.uploadedFiles, context : ctx };
};
}},
{arg: 'id', type: 'string'}],
returns : {arg: 'upload_result', type: String},
http: {path:'/:id/upload', verb: 'post'}
}
);
module.exports = Product;
我的最终目标是测试“createProduct”的逻辑。我的测试看起来像
'use strict';
describe('Product Model', function(){
var app = require('../../app');
var loopback = require('loopback');
var ProductModel;
beforeEach(function(){
app = loopback();
app.boot(__dirname+'/../../'); // contains a 'models' folder
ProductModel = loopback.getModel('Product');
var dataSource = loopback.createDataSource({
connector: loopback.Memory
});
ProductModel.attachTo(dataSource);
});
it('should load file ', function(){
console.log(ProductModel.beforeRemote.toString());
console.log(ProductModel);
ProductModel.upload();
});
});
通过调用 ProductModel.upload(); 我希望触发之前的远程挂钩,这将执行 createProduct。我可以单独测试“createProduct”,但是我会忽略 createProduct 作为上传结果最终被调用的事实。
非常清楚,核心问题是:如何在 unittests 中使用远程方法挂钩?