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diff --git a/tests/node.d/fronius.parse.spec.js b/tests/node.d/fronius.parse.spec.js
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+"use strict";
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+var netdata = require("../../node.d/node_modules/netdata");
+// remember: subject will be a singleton!
+var subject = require("../../node.d/fronius.node");
+
+var service = netdata.service({
+    name: "parse",
+    module: this
+});
+
+var root = {
+    "Body": {
+        "Data": {
+            "Site": {},
+            "Inverters": {}
+        }
+    }
+};
+
+describe("fronius parsing for power chart", function () {
+
+    var site = root.Body.Data.Site;
+
+    afterEach(function () {
+        deleteProperties(site);
+    });
+
+    it("should return 3000 for P_Grid when rounded", function () {
+        site.P_Grid = 2999.501;
+        var result = subject.parsePowerChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.powerGridId);
+        expect(result.value).toBe(3000);
+    });
+
+    it("should return -3000 for P_Grid", function () {
+        site.P_Grid = -3000;
+        var result = subject.parsePowerChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.powerGridId);
+        expect(result.value).toBe(-3000);
+    });
+
+    it("should return 0 for P_Grid if it is null", function () {
+        site.P_Grid = null;
+        var result = subject.parsePowerChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.powerGridId);
+        expect(result.value).toBe(0);
+    });
+
+    it("should return 0 for P_Grid if it is zero", function () {
+        site.P_Grid = 0;
+        var result = subject.parsePowerChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.powerGridId);
+        expect(result.value).toBe(0);
+    });
+
+    it("should return -100 for P_Akku", function () {
+        // it is unclear whether negative values are possible for p_akku (couln't test, nor any API docs found).
+        site.P_Akku = -100;
+        var result = subject.parsePowerChart(service, site).dimensions[2];
+
+        expect(result.name).toBe(subject.powerAccuId);
+        expect(result.value).toBe(-100);
+    });
+
+    it("should return 0 for P_Akku if it is null", function () {
+        site.P_Akku = null;
+        var result = subject.parsePowerChart(service, site).dimensions[2];
+
+        expect(result.name).toBe(subject.powerAccuId);
+        expect(result.value).toBe(0);
+    });
+
+    it("should return 0 for P_Akku if it is zero", function () {
+        site.P_Akku = 0;
+        var result = subject.parsePowerChart(service, site).dimensions[2];
+
+        expect(result.name).toBe(subject.powerAccuId);
+        expect(result.value).toBe(0);
+    });
+
+    it("should return 100 for P_PV", function () {
+        site.P_PV = 100;
+        var result = subject.parsePowerChart(service, site).dimensions[1];
+
+        expect(result.name).toBe(subject.powerPvId);
+        expect(result.value).toBe(100);
+    });
+
+    it("should return 0 for P_PV if it is zero", function () {
+        site.P_PV = 0;
+        var result = subject.parsePowerChart(service, site).dimensions[1];
+
+        expect(result.name).toBe(subject.powerPvId);
+        expect(result.value).toBe(0);
+    });
+
+    it("should return 0 for P_PV if it is null", function () {
+        site.P_PV = null;
+        var result = subject.parsePowerChart(service, site).dimensions[1];
+
+        expect(result.name).toBe(subject.powerPvId);
+        expect(result.value).toBe(0);
+    });
+
+    it("should return 0 for P_PV if it is negative", function () {
+        // solar panels shouldn't consume anything, only produce.
+        site.P_PV = -1;
+        var result = subject.parsePowerChart(service, site).dimensions[1];
+
+        expect(result.name).toBe(subject.powerPvId);
+        expect(result.value).toBe(0);
+    });
+
+});
+
+describe("fronius parsing for consumption", function () {
+
+    var site = root.Body.Data.Site;
+
+    afterEach(function () {
+        deleteProperties(site);
+    });
+
+    it("should return 1000 for P_Load when rounded", function () {
+        site.P_Load = 1000.499;
+        var result = subject.parseConsumptionChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.consumptionLoadId);
+        expect(result.value).toBe(1000);
+    });
+
+    it("should return absolute value for P_Load when negative", function () {
+        /*
+         with firmware 3.7.4 it is sometimes possible that negative values are returned for P_Load,
+         which makes absolutely no sense. There is always a device that consumes some electricity around the clock.
+         Best we can do is to make it a positive value, since 0 also doesn't make much sense.
+         This "workaround" seems to work, as there couldn't be any strange peaks observed during long-time testing.
+         */
+        site.P_Load = -50;
+        var result = subject.parseConsumptionChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.consumptionLoadId);
+        expect(result.value).toBe(50);
+    });
+
+    it("should return 0 for P_Load if it is null", function () {
+        site.P_Load = null;
+        var result = subject.parseConsumptionChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.consumptionLoadId);
+        expect(result.value).toBe(0);
+    });
+
+    it("should return 0 for P_Load if it is zero", function () {
+        site.P_Load = 0;
+        var result = subject.parseConsumptionChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.consumptionLoadId);
+        expect(result.value).toBe(0);
+    });
+
+});
+
+describe("fronius parsing for autonomy", function () {
+
+    var site = root.Body.Data.Site;
+
+    afterEach(function () {
+        deleteProperties(site);
+    });
+
+    it("should return 100 for rel_Autonomy", function () {
+        site.rel_Autonomy = 100;
+        var result = subject.parseAutonomyChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.autonomyId);
+        expect(result.value).toBe(100);
+    });
+
+    it("should return 0 for rel_Autonomy if it is zero", function () {
+        site.rel_Autonomy = 0;
+        var result = subject.parseAutonomyChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.autonomyId);
+        expect(result.value).toBe(0);
+    });
+
+    it("should return 0 for rel_Autonomy if it is null", function () {
+        site.rel_Autonomy = null;
+        var result = subject.parseAutonomyChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.autonomyId);
+        expect(result.value).toBe(0);
+    });
+
+    it("should return 20 for rel_Autonomy if it is 20", function () {
+        site.rel_Autonomy = 20.1;
+        var result = subject.parseAutonomyChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.autonomyId);
+        expect(result.value).toBe(20);
+    });
+
+    it("should return 20 for rel_SelfConsumption if it is 19.5", function () {
+        site.rel_SelfConsumption = 19.5;
+        var result = subject.parseAutonomyChart(service, site).dimensions[1];
+
+        expect(result.name).toBe(subject.consumptionSelfId);
+        expect(result.value).toBe(20);
+    });
+
+    it("should return 100 for rel_SelfConsumption if it is null", function () {
+        /*
+         During testing it could be observed that the API is delivering null if the solar panels
+         do not produce enough energy to supply the local load. But in this case it should be 100, since all
+         the produced energy is directly consumed.
+         */
+        site.rel_SelfConsumption = null;
+        var result = subject.parseAutonomyChart(service, site).dimensions[1];
+
+        expect(result.name).toBe(subject.consumptionSelfId);
+        expect(result.value).toBe(100);
+    });
+
+    it("should return 0 for rel_SelfConsumption if it is zero", function () {
+        site.rel_SelfConsumption = 0;
+        var result = subject.parseAutonomyChart(service, site).dimensions[1];
+
+        expect(result.name).toBe(subject.consumptionSelfId);
+        expect(result.value).toBe(0);
+    });
+
+    it("should return 0 for solarConsumption if PV is null", function () {
+        site.P_PV = null;
+        site.P_Load = -1000;
+        var result = subject.parseAutonomyChart(service, site).dimensions[2];
+
+        expect(result.name).toBe(subject.solarConsumptionId);
+        expect(result.value).toBe(0);
+    });
+
+    it("should return 100 for solarConsumption if Load is higher than solar power", function () {
+        site.P_PV = 500;
+        site.P_Load = -1500;
+        var result = subject.parseAutonomyChart(service, site).dimensions[2];
+
+        expect(result.name).toBe(subject.solarConsumptionId);
+        expect(result.value).toBe(100);
+    });
+
+    it("should return 50 for solarConsumption if Load is half than solar power", function () {
+        site.P_PV = 3000;
+        site.P_Load = -1500;
+        var result = subject.parseAutonomyChart(service, site).dimensions[2];
+
+        expect(result.name).toBe(subject.solarConsumptionId);
+        expect(result.value).toBe(50);
+    });
+});
+
+describe("fronius parsing for energy", function () {
+
+    var site = root.Body.Data.Site;
+
+    afterEach(function () {
+        deleteProperties(site);
+    });
+
+    it("should return 10000 for E_Day", function () {
+        site.E_Day = 10000;
+        var result = subject.parseEnergyTodayChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.energyTodayId);
+        expect(result.value).toBe(10000);
+    });
+
+    it("should return 0 for E_Day if it is negative", function () {
+        /*
+         The solar panels can't produce negative energy, really. It would be a fault of the API.
+         */
+        site.E_Day = -0.4;
+        var result = subject.parseEnergyTodayChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.energyTodayId);
+        expect(result.value).toBe(0);
+    });
+
+    it("should return 100'000 for E_Year", function () {
+        site.E_Year = 100000.4;
+        var result = subject.parseEnergyYearChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.energyYearId);
+        expect(result.value).toBe(100000);
+    });
+
+    it("should return 0 for E_Year if it is negative", function () {
+        /*
+         A return value of 0 only makes sense in the silvester night anyway, when the counter is being reset.
+         A negative value is a fault from the API though. It wouldn't make sense.
+         */
+        site.E_Year = -1;
+        var result = subject.parseEnergyYearChart(service, site).dimensions[0];
+
+        expect(result.name).toBe(subject.energyYearId);
+        expect(result.value).toBe(0);
+    });
+});
+
+describe("fronius parsing for inverters", function () {
+
+    var inverters = root.Body.Data.Inverters;
+
+    afterEach(function () {
+        deleteProperties(inverters);
+    });
+
+    it("should return 1000 for P for inverter with name", function () {
+       inverters["cellar"] = {
+           P: 1000
+       };
+       var result = subject.parseInverterChart(service, inverters).dimensions[0];
+
+       expect(result.name).toBe("cellar");
+       expect(result.value).toBe(1000);
+    });
+
+});