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Merge pull request #3156 from node-red/change-clone

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Add option to deep-clone properties in Change node
This commit is contained in:
Nick O'Leary
2021-10-04 10:54:52 +01:00
committed by GitHub
parent a98013806c aa5fad6628
commit 81a278dd8c
4 changed files with 93 additions and 41 deletions
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32
test/nodes/core/function/15-change_spec.js
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@@ -98,7 +98,7 @@ describe('change Node', function() {
});
describe('#set' , function() {
it('sets the value of the message property', function(done) {
var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"payload","from":"","to":"changed","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
@@ -615,7 +615,6 @@ describe('change Node', function() {
});
it('changes the value using jsonata', function(done) {
var flow = [{"id":"changeNode1","type":"change",rules:[{"t":"set","p":"payload","to":"$length(payload)","tot":"jsonata"}],"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
@@ -847,7 +846,36 @@ describe('change Node', function() {
});
})
it('deep copies the property if selected', function(done) {
var flow = [{"id":"changeNode1","type":"change","rules":[{"t":"set","p":"payload","pt":"msg","to":"source","tot":"msg","dc":true}],"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 {
// Check payload has been set to a clone of original object
// - the JSON should match
JSON.stringify(msg.payload).should.equal(JSON.stringify(originalObject))
// - but they must be different objects
msg.payload.should.not.equal(originalObject);
// Modify nested property of original object
originalObject.a.c = 3;
// Check that modification hasn't happened on cloned prop
msg.payload.a.should.not.have.property('c');
done();
} catch(err) {
done(err);
}
});
var originalObject = { a: { b: 2 } }
changeNode1.receive({source:originalObject});
});
})
});
describe('#change', function() {
it('changes the value of the message property', function(done) {