Hi all,
I am trying to develop unit test for my node-red flows.
However i am facing issue with helper.getNode() function.
It returns null after passing node_id. These node id's are correctly retrieved using loadFlowFile() function and you can see the node-id's in output code.
import "mocha";
import { expect } from "chai";
import * as sinon from "sinon";
const requiredNodes = [
require("../node_modules/@node-red/nodes/core/common/20-inject.js"),
require("../node_modules/@node-red/nodes/core/common/21-debug.js"),
require("../node_modules/@node-red/nodes/core/function/10-function.js"),
require("../node_modules/@node-red/nodes/core/function/10-switch.js"),
require("../node_modules/@node-red/nodes/core/function/89-delay.js"),
];
describe("Node-RED flow test", () => {
const helper = require("node-red-node-test-helper");
let inputNodeIds: string[] = [];
let outputNodeIds: string[] = [];
function loadFlowFile() {
const flow: any[] = require("../src/flows.json");
flow.forEach((node) => {
console.log(" Node Is = ",node)
if (node.type === "inject") {
inputNodeIds[inputNodeIds.length] = node.id;
node.type = "helper";
}
if (node.type === "debug") {
outputNodeIds[outputNodeIds.length] = node.id;
node.type = "helper";
}
});
return flow;
}
before(() => {
helper.init(require.resolve('node-red'));
});
beforeEach((done) => {
helper.startServer(done);
});
afterEach((done) => {
helper.unload().then(() => {
helper.stopServer(done);
});
})
function runFirstTest(done: Mocha.Done) {
const flow = loadFlowFile();
helper.load(requiredNodes, flow, () => {
console.log("Input Node IDs = ",inputNodeIds)
console.log("Output Node IDs = ",outputNodeIds)
helper.getNode()
const inputNode = helper.getNode(inputNodeIds[0]);
const outputNode = helper.getNode(outputNodeIds[0]);
console.log("Input Node = ",inputNode)
console.log("Output Node = ",outputNode)
outputNode.on("input", (msg: any) => {
try {
expect(msg.payload).to.equal("payload contains 0")
done();
} catch (e) {
done(e);
}
});
inputNode.wires[0].forEach((wire: string) => {
const node = helper.getNode(wire);
console.log(" Node = ",node)
node.receive({ payload: 123450 });
})
});
}
it("should send 'payload contains 0' when the first digit is 0", (done) => {
runFirstTest(done);
});
The Output is
Input Node IDs = []
Output Node IDs = [
'864ca23480dcda54',
'a07686b6eb1759d0',
'c4157b49eec5e27f',
'f27933cd8c9c2013',
'0fde90d316a166df',
'58f74f3fde83e4d0',
'439bbc55aa2305aa',
'5eb780a53e7b079d',
'e513449f80346d83'
]
Input Node = null
Output Node = null
1) should send 'payload contains 0' when the first digit is 0
0 passing (2s)
1 failing
1) Node-RED flow test
should send 'payload contains 0' when the first digit is 0:
Error: Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (C:\Users\Abbad Zafar\Desktop\node-red\node-red-email\test\flow-test.ts)
