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Added "reduce" option to the Smooth function node (#577)

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This commit is contained in:
Ola Tuvesson
2019-09-19 09:11:23 +01:00
committed by Dave Conway-Jones
parent 1f0aa6908c
commit 38feb99072
3 changed files with 97 additions and 8 deletions
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76
test/function/smooth/17-smooth_spec.js
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@@ -316,5 +316,79 @@ describe('smooth node', function() {
n1.emit("input", {payload:9, topic:"B"});
});
});
it("should reduce the number of messages by averaging if asked", function(done) {
var flow = [{"id":"n1", "type":"smooth", action:"mean", count:"5", reduce:"true", wires:[["n2"]] },
{id:"n2", type:"helper"} ];
helper.load(testNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
var c = 0;
n2.on("input", function(msg) {
c += 1;
if (c === 1) { msg.should.have.a.property("payload", 3); }
else if (c === 2) { msg.should.have.a.property("payload", 6); done(); }
else if (c > 2) { done(new Error("should not emit more than two messages.")); }
});
n1.emit("input", {payload:1});
n1.emit("input", {payload:2});
n1.emit("input", {payload:3});
n1.emit("input", {payload:4});
n1.emit("input", {payload:5});
n1.emit("input", {payload:6});
n1.emit("input", {payload:7});
n1.emit("input", {payload:8});
n1.emit("input", {payload:9})
; n1.emit("input", {payload:0});
});
});
it("should reduce the number of messages by max value, if asked", function(done) {
var flow = [{"id":"n1", "type":"smooth", action:"max", count:"5", reduce:"true", wires:[["n2"]] },
{id:"n2", type:"helper"} ];
helper.load(testNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
var c = 0;
n2.on("input", function(msg) {
c += 1;
if (c === 1) { msg.should.have.a.property("payload", 5); }
else if (c === 2) { msg.should.have.a.property("payload", 9); done(); }
else if (c > 2) { done(new Error("should not emit more than two messages.")); }
});
n1.emit("input", {payload:1});
n1.emit("input", {payload:2});
n1.emit("input", {payload:3});
n1.emit("input", {payload:4});
n1.emit("input", {payload:5});
n1.emit("input", {payload:6});
n1.emit("input", {payload:7});
n1.emit("input", {payload:8});
n1.emit("input", {payload:9});
n1.emit("input", {payload:0});
});
});
it("should reduce the number of messages by min value, if asked", function(done) {
var flow = [{"id":"n1", "type":"smooth", action:"min", count:"5", reduce:"true", wires:[["n2"]] },
{id:"n2", type:"helper"} ];
helper.load(testNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
var c = 0;
n2.on("input", function(msg) {
c += 1;
if (c === 1) { msg.should.have.a.property("payload", 1); }
else if (c === 2) { msg.should.have.a.property("payload", 0); done(); }
else if (c > 2) { done(new Error("should not emit more than two messages.")); }
});
n1.emit("input", {payload:1});
n1.emit("input", {payload:2});
n1.emit("input", {payload:3});
n1.emit("input", {payload:4});
n1.emit("input", {payload:5});
n1.emit("input", {payload:6});
n1.emit("input", {payload:7});
n1.emit("input", {payload:8});
n1.emit("input", {payload:9});
n1.emit("input", {payload:0});
});
});
});