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Fix change node overwriting msg with itself

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and add test
to close #3891
This commit is contained in:
Dave Conway-Jones 2022-09-22 20:22:11 +01:00
parent f060309002
commit 3e4c45ac6a
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2 changed files with 19 additions and 1 deletions
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2
packages/node_modules/@node-red/nodes/core/function/15-change.js vendored
View File

@ -318,7 +318,7 @@ module.exports = function(RED) {
}
var r = node.rules[currentRule];
if (r.t === "move") {
if ((r.tot !== r.pt) || (r.p.indexOf(r.to) !== -1)) {
if ((r.tot !== r.pt) || (r.p.indexOf(r.to) !== -1) && (r.p !== r.to)) {
applyRule(msg,{t:"set", p:r.to, pt:r.tot, to:r.p, tot:r.pt},(err,msg) => {
applyRule(msg,{t:"delete", p:r.p, pt:r.pt}, (err,msg) => {
completeApplyingRules(msg,currentRule,done);

18
test/nodes/core/function/15-change_spec.js
View File

@ -1717,6 +1717,24 @@ describe('change Node', function() {
changeNode1.receive({topic:{foo:{bar:1}}, payload:"String"});
});
});
it('moves the value of a message property object to itself', function(done) {
var flow = [{"id":"changeNode1","type":"change","rules":[{"t":"move","p":"payload","pt":"msg","to":"payload","tot":"msg"}],"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
helper.load(changeNode, flow, function() {
var changeNode1 = helper.getNode("changeNode1");
var helperNode1 = helper.getNode("helperNode1");
helperNode1.on("input", function(msg) {
try {
msg.should.have.property('payload');
msg.payload.should.equal("bar");
done();
} catch(err) {
done(err);
}
});
changeNode1.receive({payload:"bar"});
});
});
it('moves the value of a message property object to a sub-property', function(done) {
var flow = [{"id":"changeNode1","type":"change","rules":[{"t":"move","p":"payload","pt":"msg","to":"payload.foo","tot":"msg"}],"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];