152 lines
5.1 KiB
JavaScript
152 lines
5.1 KiB
JavaScript
////////////////////////////////////////////////////////////////////////////
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//
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// This is included with cds in newer versions
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//
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////////////////////////////////////////////////////////////////////////////
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const { resolve, dirname } = require('path')
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const cwd = process.cwd()
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// harmonizing jest and mocha
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const is_mocha = !global.test
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const is_jest = !!global.test
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if (is_jest) { // it's jest
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global.before = (msg,fn) => global.beforeAll(fn||msg)
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global.after = (msg,fn) => global.afterAll(fn||msg)
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} else { // it's mocha
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global.beforeAll = global.before
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global.afterAll = global.after
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global.test = global.it
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}
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/**
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* Test kit for jest or mocha testing, which can be used statically
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* via the getters for chai, expect and assert or through a server
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* started with .launch(...).
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*/
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class CDSTestKit {
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/**
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* Creates a new instance serving projects from subfolders under the root
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* specified by a sequence of path components which are concatenated with
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* path.resolve().
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*/
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for (...paths) {
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const tk = new CDSTestKit
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tk.root = resolve (...paths)
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return tk
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}
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/** Lazily loads and returns an instance of chai */
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get chai() {
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const chai = require('chai')
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chai.use (require('chai-as-promised'))
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chai.use (require('chai-subset'))
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Object.defineProperty (CDSTestKit.prototype, 'chai', {value:chai})
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return chai
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}
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get expect(){ return this.chai.expect }
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get assert(){ return this.chai.assert }
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/**
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* Launches a cds server with arbitrary port and returns a subclass which
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* also acts as an axios lookalike, providing methods to send requests.
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*/
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launch (project, ...args) {
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// Setting up test server
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const console = global.console, logs=[]
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const axios = require('axios').default
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const lazy = this, test = {
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GET: (path,...etc) => axios.get (test.url+path,...etc) .catch(_error),
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PUT: (path,...etc) => axios.put (test.url+path,...etc) .catch(_error),
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POST: (path,...etc) => axios.post (test.url+path,...etc) .catch(_error),
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PATCH: (path,...etc) => axios.patch (test.url+path,...etc) .catch(_error),
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DELETE: (path,...etc) => axios.delete (test.url+path,...etc) .catch(_error),
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get: (path,...etc) => axios.get (test.url+path,...etc) .catch(_error),
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put: (path,...etc) => axios.put (test.url+path,...etc) .catch(_error),
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post: (path,...etc) => axios.post (test.url+path,...etc) .catch(_error),
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patch: (path,...etc) => axios.patch (test.url+path,...etc) .catch(_error),
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delete: (path,...etc) => axios.delete (test.url+path,...etc) .catch(_error),
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/** Lazily loads and returns an instance of chai */
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get chai(){ return lazy.chai },
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get expect(){ return lazy.expect },
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get assert(){ return lazy.assert },
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}
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// launch cds server...
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before (`launching cds server for ${project}...`, done => {
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const cds = require('@sap/cds'), { isdir } = cds.utils
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let cmd = 'run'
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if (project.startsWith('cds ')) [ cmd, project ] = [ project.slice(4), args.shift() ]
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if (!args.length) args = ['--in-memory?']
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// Supporting .launch (<package name>)
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if (cmd === 'run') {
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if (isdir(project)) ; //> all fine
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else if (isdir(resolve(this.root,project))) project = resolve(this.root,project)
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else try { project = dirname (require.resolve(project+'/package.json')) }
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catch(e) { throw cds.error (`Cannot resolve project folder for '${project}'`) }
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}
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if (!process.env.CDS_TEST_VERBOSE) global.console = { __proto__: global.console, logs,
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time: ()=>{}, timeEnd: (...args)=> logs.push(args),
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debug: (...args)=> logs.push(args),
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log: (...args)=> logs.push(args),
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warn: (...args)=> logs.push(args),
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error: (...args)=> logs.push(args),
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dump(){ for (let each of logs) console.log (...each) },
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}
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// return done (new Error(11))
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process.env.PORT = '0'
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const p = cds.exec (cmd, project, ...args) // TODO w/ @sap/[email protected]: , '--port', '0')
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if (p && 'catch' in p) p.catch (e => {
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if (is_mocha) console.error(e)
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done(e)
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})
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cds.once('listening', ({ server, url }) => {
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Object.assign (test,{server,url})
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done()
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})
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})
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// shutdown cds server...
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after (done => {
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if (global.console !== console) global.console = console
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if (cwd !== process.cwd()) process.chdir(cwd)
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test.server ? test.server.close (done) : done()
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process.emit('shutdown')
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})
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function _error (e) {
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if (!e.response) throw e
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if (!e.response.data) throw e
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if (!e.response.data.error) throw e
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const { code, message } = e.response.data.error
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throw new Error (code && code !== 'null' ? `${code} - ${message}` : message)
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}
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return test
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}
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}
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// eslint-disable-next-line no-global-assign
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require = (mod) => {
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try { return module.require(mod) }
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catch(e) { if (e.code === 'MODULE_NOT_FOUND') throw new Error (`
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Failed to load required package '${mod}'. Please add it thru:
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npm add -D ${mod === 'chai' ? 'chai chai-as-promised chai-subset' : mod}
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`) }
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}
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module.exports = new CDSTestKit
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exports.root = __dirname
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