node-red-contrib-buffer-parser
Version:
Node-red nodes to convert values to and from buffer/array. Supports Big/Little Endian, BCD, byte swapping and much more
111 lines (94 loc) • 6.34 kB
JavaScript
var should = require("should");
var helper = require("node-red-node-test-helper");
var bufferParser = require("../buffer-parser.js");
const getTestFlow = (nodeName, resultPayloadPropName) => {
resultPayloadPropName = resultPayloadPropName ? resultPayloadPropName : "payload";
return [
{ id: 'helperNode1', type: 'helper' },
{ id: 'helperNode2', type: 'helper' },
{ id: 'helperNode3', type: 'helper' },
{ id: 'helperNode4', type: 'helper' },
{ id: 'helperNode5', type: 'helper' },
{"id":"testNode","type":"buffer-parser","name":nodeName,"msgProperty":resultPayloadPropName,"data":"payload","dataType":"msg","specification":"spec","specificationType":"ui","items":[{"type":"int16be","name":"item1","offset":0,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"int32be","name":"item2","offset":2,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"bigint64be","name":"item3","offset":6,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"hex","name":"item4","offset":14,"length":10,"offsetbit":0,"scale":"1","mask":""},{"type":"string","name":"item5","offset":24,"length":10,"offsetbit":0,"scale":"1","mask":""}],"swap1":"","swap2":"","swap3":"","swap1Type":"swap","swap2Type":"swap","swap3Type":"swap","msgPropertyType":"str","resultType":"value","resultTypeType":"output","multipleResult":true,"fanOutMultipleResult":true,"setTopic":true,"outputs":5,"wires":[["helperNode1"],["helperNode2"],["helperNode3"],["helperNode4"],["helperNode5"]]}
];
};
helper.init(require.resolve('node-red'));
describe('buffer-parser Node', function(){
"use strict";
beforeEach(done => { helper.startServer(done); });
afterEach(done => { helper.unload().then(() => helper.stopServer(done)); });
it('should be loaded', done => {
// const flow = [{ id: 'testNode', type: 'buffer-parser', name: 'test--buffer-parser' }];
const flow = [{"id":"testNode","type":"buffer-parser","name":"test--buffer-parser","specification":"spec","specificationType":"ui","items":[{"name":"item1","type":"byte","length":1,"dataType":"num","data":"1"},{"name":"item2","type":"int8","length":1,"dataType":"num","data":"-2"},{"name":"item3","type":"uint8","length":1,"dataType":"num","data":"3"},{"name":"item4","type":"int16le","length":1,"dataType":"num","data":"-4"},{"name":"item5","type":"uint16le","length":1,"dataType":"num","data":"5"},{"name":"item6","type":"uint16le","length":1,"dataType":"num","data":"6"}],"swap1":"","swap2":"","swap3":"","swap1Type":"swap","swap2Type":"swap","swap3Type":"swap","msgProperty":"payload","msgPropertyType":"str"}]
helper.load(bufferParser, flow, () => {
try {
const n = helper.getNode('testNode');
n.should.have.property('name', 'test--buffer-parser');
done();
} catch (error) {
done(error);
}
});
});
it('should generate 5 values (fan out test)', done => {
const resultProp = "my.custom.payload";
const testNodeName = "buffer-parser-node-name";
const flow = getTestFlow(testNodeName,resultProp);
this.timeout(2000); //timeout with an error if done() isn't called within one second
helper.load(bufferParser, flow, function() {
try {
var helperNode1 = helper.getNode("helperNode1");
var helperNode2 = helper.getNode("helperNode2");
var helperNode3 = helper.getNode("helperNode3");
var helperNode4 = helper.getNode("helperNode4");
var helperNode5 = helper.getNode("helperNode5");
var testNode = helper.getNode("testNode");
should(helperNode1).not.be.null();
should(helperNode2).not.be.null();
should(helperNode3).not.be.null();
should(helperNode4).not.be.null();
should(helperNode5).not.be.null();
should(testNode).not.be.null();
testNode.should.have.property('name', testNodeName);
var results = {};
setTimeout(function () {
var doTest = function(msg, expectedType, expectedValue) {
var path = resultProp.split(".");
msg.should.have.propertyByPath(...path);
/** @type {should.Assertion} */ var rp = msg.should.have.propertyByPath(...path).obj;//get the nested property
should(rp).be.of.type(expectedType);
should(rp).eql(expectedValue);
}
try {
results.should.have.properties(["resultMsg1","resultMsg2","resultMsg3","resultMsg4","resultMsg5"])
doTest(results.resultMsg1, "number", 24930);
doTest(results.resultMsg2, "number", 1667523942);
doTest(results.resultMsg3, "bigint", 7451321489274203502n);
doTest(results.resultMsg4, "string", "6f707172737475767778");
doTest(results.resultMsg5, "string", "yzABCDEFGH");
done();
return;
} catch (error) {
done(error);
}
}, 1000);
helperNode1.on("input", function (msg) { results.resultMsg1 = msg; });
helperNode2.on("input", function (msg) { results.resultMsg2 = msg; });
helperNode3.on("input", function (msg) { results.resultMsg3 = msg; });
helperNode4.on("input", function (msg) { results.resultMsg4 = msg; });
helperNode5.on("input", function (msg) { results.resultMsg5 = msg; });
testNode.receive({ payload: Buffer.from([97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90]) }); //fire input of testNode
} catch (error) {
done(error);
}
});
});
//TODO: Test the following...
/*
* all functions
* all output types
* byteswaps
* scalling operators
* dynamic spec
*/
});