node-red-node-loader

Help loading node for Node Test Helper

Install

1$ npm i node-red-node-loader

Usage

1const nodeArr = new NodeLoader().getNodeArray(fileString)
2const nodeArr = new NodeLoader().getNodeArray(fileString,excludeList)
3const nodeArr = new NodeLoader().getNodeArrayFromFlow(flowData,excludeList)
4//excludeList is optional

Example

1import {NodeLoader} from 'node-red-node-loader'
2import helper from 'node-red-node-test-helper'
3import {NodeRedTestServer} from 'node-red-test-helper-tool'
4import fs from 'fs/promises'
5helper.init(require.resolve('node-red'))
6
7describe("test node red flow",()=>{
8    const FILENAME = __dirname+"/flows/flow.json"
9    // const nodeLoader = new NodeLoader()
10    beforeAll((done)=>{
11        helper.startServer(done)
12    })
13    afterAll((done)=>{
14        helper.stopServer(done)
15    })
16    afterEach(()=>{
17        helper.unload()
18    })
19    it("test node loader with node-red-node-loader and using done",(done)=>{
20        fs.readFile(FILENAME,'utf-8').then(async(res)=>{
21            const flow = JSON.parse(res)
22            const nodeArr = new NodeLoader().getNodeArray(res)
23            const nodeArr2 = new NodeLoader().getNodeArrayFromFlow(flow)
24            helper.load([...nodeArr],flow,()=>{
25                const n0 = helper.getNode("n0")
26                const n1 = helper.getNode("n1")
27                n0.send({payload:"UpperCase"})
28                n1.on('input',(msg)=>{
29                    try{
30                        done()
31                    }
32                    catch(err)
33                    {
34                        done(err)
35                    }
36                })
37            })
38        })
39    })
40    it("test node loader with node-red-node-loader and using async",async()=>{
41        await fs.readFile(FILENAME,'utf-8').then(async(res)=>{
42            const flow = JSON.parse(res)
43            const nodeArr = new NodeLoader().getNodeArray(res)
44            
45            await helper.load([...nodeArr],flow)
46            const n0 = helper.getNode("n0")
47            const n1 = helper.getNode("n1")
48            await new Promise((resolve,reject)=>{
49                n0.send({payload:"UpperCase"})
50                n1.on('input',(msg)=>{
51                    try{
52                        resolve(msg)
53                    }
54                    catch(err)
55                    {
56                        reject(err)
57                    }
58                })
59            })
60        })
61    })
62    it("test node loader with node-red-node-loader, node-red-test-helper-tool and using async",async()=>{
63        const testServer = new NodeRedTestServer(helper)
64        await fs.readFile(FILENAME,'utf-8').then(async(res)=>{
65            const flow = JSON.parse(res)
66            const nodeArr = new NodeLoader().getNodeArray(res)
67             
68            const testOuput = await testServer.testFlow(nodeArr,flow,'n0','n1',{payload:"UpperCase"})
69
70        })
71    })
72} )

Example repo