Alex2Node/test/compat/messages.test.js

"use strict";
// AlexaStatusMessage and AlexaErrorResponse, the message classes of 1.x: the JSON of 1.5.2, and the four places
// where 2.0 differs from it on the wire (DESIGN.md, 6.1).
const { test } = require("node:test");
const assert = require("node:assert/strict");
const {
  Alex2MQTT, AlexaErrorResponse, AlexaErrorType, AlexaInterfaceType, AlexaStatusMessage, DisplayCategory, EndpointHealth,
  MemoryPublisher, PowerController, TemperatureSensorScale,
} = require("alex2node");
const { setup, sleep, UUID_V4 } = require("../helpers/harness.js");

const ISO_TIME = /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z$/;

// The message with its id and its times checked and replaced by their names, so that the rest compares as a whole
function settled(message) {
  const json = JSON.parse(JSON.stringify(message));
  assert.match(json.event.header.messageId, UUID_V4);
  json.event.header.messageId = "<id>";
  const lists = [json.context?.properties, json.event.payload.change?.properties].filter(Boolean);
  for (const property of lists.flat()) {
    assert.match(property.timeOfSample, ISO_TIME);
    property.timeOfSample = "<time>";
  }
  return json;
}

const property = (namespace, name, value, more = {}) => (
  { namespace, name, value, timeOfSample: "<time>", uncertaintyInMilliseconds: 0, ...more }
);

test("a Response with every add...Prop helper: the JSON of 1.5.2", () => {
  const message = new AlexaStatusMessage("ct", "root", "5020AA", null, true)
    .addPowerControllerProp(PowerController.ON)
    .addBrightnessControllerProp(40, 500)
    .addColorTemperatureControllerProp(2700)
    .addToggleControllerProp(PowerController.OFF, "Oven.Light")
    .addModeControllerProp("Washer.Cycle", "Cycle.Delicates")
    .addThermostatModeProp("HEAT")
    .addThermostatControllerProp("targetSetpoint", TemperatureSensorScale.CELSIUS, 21.5)
    .addTemperatureSensorProp(TemperatureSensorScale.FAHRENHEIT, 212)
    .addHealthProp(EndpointHealth.OK)
    .addContextProp({ namespace: "Alexa.Vendor", name: "level", value: 1, timeOfSample: "2026-09-28T10:00:00.000Z", uncertaintyInMilliseconds: 0 });
  assert.equal(message.isChangeReport(), false);
  assert.deepEqual(settled(message), {
    event: {
      header: { namespace: "Alexa", name: "Response", payloadVersion: "3", messageId: "<id>", correlationToken: "ct" },
      endpoint: { endpointId: "5020AA" },
      payload: {},
    },
    context: {
      properties: [
        property("Alexa.PowerController", "powerState", "ON"),
        property("Alexa.BrightnessController", "brightness", 40, { uncertaintyInMilliseconds: 500 }),
        property("Alexa.ColorTemperatureController", "colorTemperatureInKelvin", 2700),
        property("Alexa.ToggleController", "toggleState", "OFF", { instance: "Oven.Light" }),
        property("Alexa.ModeController", "mode", "Cycle.Delicates", { instance: "Washer.Cycle" }),
        property("Alexa.ThermostatController", "thermostatMode", "HEAT"),
        property("Alexa.ThermostatController", "targetSetpoint", { value: 21.5, scale: "CELSIUS" }),
        property("Alexa.TemperatureSensor", "temperature", { value: 100, scale: "CELSIUS" }),
        property("Alexa.EndpointHealth", "connectivity", { value: "OK" }),
        property("Alexa.Vendor", "level", 1),
      ],
    },
  });
});

test("a StateReport is the default; the messageId stays the same from one toJSON() to the next", () => {
  const message = new AlexaStatusMessage("ct", "root", "5020AA", null).addPowerControllerProp(PowerController.OFF);
  assert.equal(message.toJSON().event.header.name, "StateReport");
  assert.equal(message.toJSON().event.header.messageId, message.toJSON().event.header.messageId);
});

test("wire change: a DeferredResponse has no context key (1.5.2: \"context\": null)", () => {
  const message = new AlexaStatusMessage("ct", "root", "5020AA", null, false, true).addEstimatedDeferralTime(20);
  assert.deepEqual(settled(message), {
    event: {
      header: { namespace: "Alexa", name: "DeferredResponse", payloadVersion: "3", messageId: "<id>", correlationToken: "ct" },
      endpoint: { endpointId: "5020AA" },
      payload: { estimatedDeferralInSeconds: 20 },
    },
  });
  assert.equal("context" in message.toJSON(), false);
});

test("wire change: a ChangeReport has no correlationToken (1.5.2: an empty one)", () => {
  const message = new AlexaStatusMessage("", "root", "5020AA", null, false, false, "APP_INTERACTION")
    .addPowerControllerProp(PowerController.ON)
    .unchanged()
    .addBrightnessControllerProp(40)
    .changed()
    .addHealthProp("OK")
    .addContextProp(property("Alexa.Vendor", "level", 1, { timeOfSample: "2026-09-28T10:00:00.000Z" }));
  assert.equal(message.isChangeReport(), true);
  assert.deepEqual(settled(message), {
    event: {
      header: { namespace: "Alexa", name: "ChangeReport", payloadVersion: "3", messageId: "<id>" },
      endpoint: { endpointId: "5020AA" },
      payload: {
        change: {
          cause: { type: "APP_INTERACTION" },
          properties: [
            property("Alexa.PowerController", "powerState", "ON"),
            property("Alexa.EndpointHealth", "connectivity", { value: "OK" }),
          ],
        },
      },
    },
    context: { properties: [property("Alexa.BrightnessController", "brightness", 40), property("Alexa.Vendor", "level", 1)] },
  });
});

test("wire change: the namespace of an ErrorResponse follows the type (1.5.2: always Alexa)", () => {
  const header = (type, options) => {
    const error = new AlexaErrorResponse("ct", "root", "5020AA", null);
    error.setErrorMessage(type, "m", {}, options);
    return error.toJSON().event.header.namespace;
  };
  assert.equal(header(AlexaErrorType.ENDPOINT_UNREACHABLE), "Alexa");
  assert.equal(header(AlexaErrorType.THERMOSTAT_IS_OFF), "Alexa.ThermostatController");
  assert.equal(header(AlexaErrorType.UNAUTHORIZED), "Alexa.SecurityPanelController");
  assert.equal(header(AlexaErrorType.OBSTACLE_DETECTED), "Alexa.Safety");
  assert.equal(header(AlexaErrorType.THERMOSTAT_IS_OFF, { namespace: "Alexa" }), "Alexa");
  // The idiom of the consumer: a type the enum does not have is sent as it is
  assert.equal(header(AlexaErrorType.SOMETHING_NEW || "SOMETHING_NEW"), "Alexa");
});

test("an ErrorResponse with the fields of its type: the JSON of 1.5.2, sent to the topic asked for", async () => {
  const sent = new MemoryPublisher();
  const error = new AlexaErrorResponse("ct", "root", "5020AA", sent);
  error.setErrorMessage(AlexaErrorType.VALUE_OUT_OF_RANGE, "too high", { validRange: { minimumValue: 1, maximumValue: 10 } });
  const expected = {
    event: {
      header: { namespace: "Alexa", name: "ErrorResponse", messageId: "<id>", correlationToken: "ct", payloadVersion: "3" },
      endpoint: { endpointId: "5020AA" },
      payload: { type: "VALUE_OUT_OF_RANGE", message: "too high", validRange: { minimumValue: 1, maximumValue: 10 } },
    },
  };
  assert.deepEqual(settled(error), expected);
  assert.equal(await error.send(), "root/5020AA/alexaResponce");
  assert.equal(await error.send(true), "root/5020AA/deferredResponse");
  assert.deepEqual(sent.published.map(({ topic, message }) => [topic, settled(message)]), [
    ["root/5020AA/alexaResponce", expected],
    ["root/5020AA/deferredResponse", expected],
  ]);
});

test("an ErrorResponse nobody gave a type is an INTERNAL_ERROR", () => {
  const { payload } = new AlexaErrorResponse("ct", "root", "5020AA", null).toJSON().event;
  assert.equal(payload.type, "INTERNAL_ERROR");
  assert.match(payload.message, /did not say which/);
});

test("send: the topic of the message; a publish that fails resolves \"\" and is reported, never rejected", async () => {
  const sent = new MemoryPublisher();
  const status = (...flags) => new AlexaStatusMessage("ct", "root", "5020AA", sent, ...flags).addPowerControllerProp(PowerController.ON);
  assert.equal(await status(true).send(), "root/5020AA/alexaResponce");
  assert.equal(await status(true).send(true), "root/5020AA/deferredResponse");
  assert.equal(await status(false, false, "PHYSICAL_INTERACTION").send(), "root/changeReport");
  assert.deepEqual(sent.published.map(({ message }) => message.event.header.name), ["Response", "Response", "ChangeReport"]);

  const gone = new MemoryPublisher();
  gone.failWith = new Error("broker gone");
  const failing = new AlexaStatusMessage("ct", "root", "5020AA", gone, true);
  const reported = [];
  failing.onPublishError = (err) => reported.push(err.message);
  assert.equal(await failing.send(), "");
  assert.deepEqual(reported, ["broker gone"]);
});

test("wire change: a ChangeReport without a changed property is not published, the bridge reports which endpoint", async () => {
  const { alexa, bridge } = await setup(Alex2MQTT, "root");
  const errors = [];
  bridge.on("error", (err) => errors.push(err));
  const lamp = bridge.registerDevice("Dining Room Light", "5020AA", DisplayCategory.LIGHT);
  lamp.addCapability(AlexaInterfaceType.POWER_CONTROLLER, { proactivelyReported: true });

  const report = lamp.getChangeReport().unchanged().addBrightnessControllerProp(40);
  assert.throws(() => report.toJSON(), /^MessageError: 5020AA: a ChangeReport needs at least one property that changed/);
  assert.equal(await report.send(), "");
  assert.equal(errors.length, 1);
  assert.match(errors[0].message, /^5020AA: a ChangeReport needs at least one property that changed/);

  // The report that follows arrives alone: the empty one was not published before it
  assert.equal(await lamp.getChangeReport().addPowerControllerProp(PowerController.ON).send(), "root/changeReport");
  await sleep(100);
  assert.deepEqual(alexa.on("root/changeReport").map((m) => m.event.payload.change.properties.map((p) => p.name)), [["powerState"]]);
});